Patent Description:
The disclosure is directed to devices for providing optical connections in a communications network along with methods for making the same. More specifically, the disclosure is directed to devices having a compact form-factor and simplified design along with an along with methods of making the same.

Optical fiber is increasingly being used for a variety of applications, including but not limited to broadband voice, video, and data transmission. As bandwidth demands increase optical fiber is migrating deeper into communication networks such as in fiber to the premises applications such as FTTx, <NUM> and the like. As optical fiber extended deeper into communications networks the need for making robust optical connections in outdoor applications in a quick and easy manner was apparent. To address this need for making quick, reliable, and robust optical connections in communication networks for the outside the plant environment hardened fiber optic connectors such as the OptiTap® plug connector were developed.

Multiports were also developed for making an optical connection with hardened connectors such as the OptiTap®. Prior art multiports have a plurality of receptacles mounted through a wall of the housing for protecting an indoor connector inside the housing that makes an optical connection to the external hardened connector of the branch or drop cable.

Illustratively, <FIG> shows a conventional fiber optic multiport <NUM> having an input fiber optic cable <NUM> carrying one or more optical fibers to indoor-type connectors inside a housing <NUM>. The multiport <NUM> receives the optical fibers into a housing <NUM> and distributes the optical fibers to receptacles <NUM> for connection with a hardened connector. The receptacles <NUM> are separate assemblies attached through a wall of housing <NUM> of multiport <NUM>. The receptacles <NUM> allow mating with hardened connectors attached to drop or branching cables (not shown) such as drop cables for "fiber-to-the-home" applications. During use, optical signals pass through the branch cables, to and from the fiber optic cable <NUM> by way of the optical connections at the receptacles <NUM> of multiport <NUM>. Fiber optic cable <NUM> may also be terminated with a fiber optic connector <NUM>. Multiports allowed quick and easy deployment for optical networks.

Although, the housing <NUM> of the prior art multiport <NUM> is rugged and weatherable for outdoor deployments, the housings <NUM> of multiport <NUM> are relatively bulky for mounting multiple receptacles <NUM> for the hardened connector on the housing <NUM>. Receptacles <NUM> allow an optical connection between the hardened connector such as the OptiTap® male plug connector on the branch cable with a non-hardened connector such as the SC connector disposed within the housing <NUM>, which provides a suitable transition from an outdoor space to an protected space inside the housing <NUM>.

Receptacle <NUM> for the OptiTap® connector is described in further detail in <CIT>. As depicted in <CIT>, the receptacle includes a receptacle housing and an adapter sleeve disposed therein. Thus, the receptacles for the hardened connector are large and bulky and require a great deal of surface array when arranged in an array on the housing <NUM> such as shown with multiport <NUM>. Further, conventional hardened connectors use a separate threaded or bayonet coupling that requires rotation about the longitudinal axis of the connector and room for grabbing and rotating the coupling by hand when mounted in an array on the housing <NUM>.

Consequently, the housing <NUM> of the multiport <NUM> is excessively bulky. For example, the multiport <NUM> may be too boxy and inflexible to effectively operate in smaller storage spaces, such as the underground pits or vaults that may already be crowded. Furthermore, having all of the receptacles <NUM> on the housing <NUM>, as shown in <FIG>, requires sufficient room for the drop or branch cables attached to the hardened connectors attached to the multiport <NUM>. While pits can be widened and larger storage containers can be used, such solutions tend to be costly and time-consuming. Network operators may desire other deployment applications for multiports <NUM> such as aerial, in a pedestal or mounted on a façade of a building that are not ideal for the prior art multiports <NUM> for numerous reasons such as congested poles or spaces or for aesthetic concerns.

Other multiports designs have been commercialized to address the drawbacks of the prior art multiports depicted in <FIG>. By way of explanation, <CIT> discloses multiports <NUM>' having one or more connection ports <NUM> positioned on the end of extensions <NUM> that project from the housing of the multiport <NUM>' such as depicted in <FIG>. Connection ports <NUM> of multiport <NUM>' are configured for mating directly with a hardened connector (not shown) such as an OptiTap® without the need to protect the receptacle <NUM> within a housing like the prior art multiport <NUM> of <FIG>.

Although, these types of multiport designs such as shown in <FIG> and disclosed in <CIT> allow the device to have smaller footprints for the housing <NUM>', these designs still have concerns such as the space consumed by the relatively large ports <NUM> and associated space requirements of optical connections between the ports and hardened connector of the drop cables along with organizational challenges. Simply stated, the ports <NUM> on the extensions <NUM> of the multiport <NUM>' and the optical connections between ports <NUM> and hardened connector occupy significant space at a location a short distance away from the multiport housing <NUM>' such as within a buried vault or disposed on a pole. In other words, a cluster of optical ports <NUM> of multiport <NUM>' are bulky or occupy limited space. The conventional hardened connectors used with multiport <NUM>' also use a separate threaded or bayonet coupling that requires rotation about the longitudinal axis of the connector along with sufficient space for grabbing and rotating the coupling means by hand. Further, there are aesthetic concerns with the prior art multiports <NUM>' as well.

Consequently, there exists an unresolved need for multiports that allow flexibility for the network operators to quickly and easily make optical connections in their optical network while also addressing concerns related to limited space, organization, or aesthetics.

<CIT> discloses a hybrid connector that is received in hybrid adapter. The hybrid adapter requires a slide clip for securing the hybrid connector to the exterior-side of the enclosure. The Slide clip is slidably mounted on the outer part of connector housing using rails on the slide clip that cooperate with channels of the outer part of adapter housing. The Slide clip is biased toward the coupling position using leaf spring.

<CIT> is directed to an enclosure having connector port that extend through a wall of the enclosure. Sleeves are formed in the enclosure wall and define fastening structure for the external connectors that may be attached to the connector port. The sleeves have threads or bayonet features for attaching the external connector to the connector port.

<CIT> is directed to a rectangular optical adapter having multiple ports each with stop members that are movable from the optical adapter to selectively lock the connector within a particular adapter port.

The invention provides a multiport according to claim <NUM> and a method of making multiports according to claim <NUM>.

It is to be understood that both the foregoing general description and the following detailed description present embodiments that are intended to provide an overview or framework for understanding the nature and character of the claims. The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated into and constitute a part of this specification. The drawings illustrate various embodiments and together with the description serve to explain the principles and operation.

Reference will now be made in detail to the embodiments of the disclosure, examples of which are illustrated in the accompanying drawings.

The concepts for the devices disclosed herein are suitable for providing at least one optical connection to a device for indoor, outdoor or other environments as desired. Generally speaking, the devices disclosed and explained in the exemplary embodiments are multiports, but the concepts disclosed may be used with any suitable device as appropriate. As used herein, the term "multiport" means any device comprising at least one connection port for making an optical connection and a retention feature or securing feature associated with the at least one connection port. By way of example, the multiport may be any suitable device having at least one optical connection such as a passive device like an optical closure (hereinafter "closure") or an active device such as a wireless device having electronics for transmiting or receiving a signal.

The concepts disclosed advantageously allow compact form-factors for devices such as multiports comprising at least one connection port and the retention feature or securing feature associated with the connection port. The concepts are scalable to many connection ports on a device in a variety of arrangements or constructions. The compact form-factors may allow the placement of the devices in tight spaces in indoor, outdoor, buried, aerial, industrial or other applications while providing at least one connection port that is advantageous for a robust and reliable optical connection in a removable and replaceable manner. The disclosed devices may also be aesthetically pleasing and provide organization for the optical connections in manner that the prior art multiports cannot provide.

The devices disclosed are simple and elegant in their designs. The devices disclosed comprise at least one connection port and a retention feature or securing feature associated with the connection port that is suitable for retaining an external fiber optic connector received by the connection port. Unlike prior art multiports, some of the concepts disclosed advantageously allow the quick and easy connection and retention by inserting the fiber optic connectors directly into the connection port of the device without the need or space considerations for turning a threaded coupling nut or bayonet for retaining the external fiber optic connector. Generally speaking, the retention features or securing features disclosed for use with devices herein may comprise one or more components with at least one component translating for releasing or securing the external fiber optic connector to the device. As used herein, the term "securing feature" excludes threaded portions or features for securing a bayonet disposed on a connector.

Since the connector footprint used with the devices disclosed does not require the bulkiness of a coupling nut or bayonet, the fiber optic connectors used with the devices disclosed herein may be significantly smaller than conventional connectors used with prior art multiports. Moreover, the present concepts using the securing features with the connection ports on devices allows an increased density of connection ports per volume of the shell since there is no need for accessing and turning the coupling nut or bayonets by hand for securing a fiber optic connector like the prior art multiports.

The devices disclosed comprise a retention feature or securing feature for directly engaging with a suitable portion of a connector housing of the external fiber optic connector or the like for securing an optical connection with the device. Different variations of the concepts are discussed in further detail below. The structure for securing the fiber optic connectors in the devices disclosed allows much smaller footprints for both the devices and the fiber optic connectors. Devices may also have a dense spacing of connection ports if desired. The devices disclosed advantageously allow a relatively dense and organized array of connection ports in a relatively small form-factor while still being rugged for demanding environments. As optical networks increase densifications and space is at a premium, the robust and small-form factors for devices such as multiports, closures and wireless devices becomes increasingly desirable for network operators.

The concepts disclosed herein are suitable for optical distribution networks such as for Fiber-to-the-Home applications, but are equally applicable to other optical applications as well including indoor, automotive, industrial, wireless or other suitable applications. Additionally, the concepts may be used with any suitable fiber optic connector footprint that cooperates with the retention feature or securing features disclosed, but the concepts disclosed herein may be used with other fiber optic connectors as well. Various designs, constructions or features for devices are disclosed in more detail as discussed herein.

<FIG> respectively depict a perspective and detail views of an comparative multiport <NUM> having a shell <NUM> and connection port insert <NUM>. Shell <NUM> comprises a first end <NUM> having a first opening <NUM> leading to a cavity <NUM> (see <FIG>). Connection port insert <NUM> comprises a body <NUM> having a front face <NUM> and a plurality of connection ports <NUM>. Each connector port <NUM> has an optical connector opening <NUM> extending from the front face <NUM> into the connection port insert <NUM> with a connection port passageway <NUM> extending through part of the connection port insert <NUM> to a rear portion <NUM> of the connection port insert <NUM>. Connection port insert <NUM> is sized so that at least a portion of the connection port insert <NUM> fits into the first opening <NUM> and the cavity <NUM> of the shell <NUM>.

Multiports provide optical connections to the multiport by inserting one or more external fiber optic connectors <NUM> as needed. Specifically, the connection port passageway <NUM> is configured for receiving a suitable fiber optic connector <NUM> (hereinafter connector) of fiber optic cable assembly <NUM> (hereinafter cable assembly) as depicted in <FIG>. Connection port passageway <NUM> may comprise one or more retention features 233a (see <FIG>) for securing connector <NUM> as desired. The retention feature 233a may be disposed in the connection port passageway or be disposed in other locations as appropriate for retaining one of the mating connectors. By way of example, the retaining feature may be a friction fit, a detent, a protrusion, bayonet, threaded portion or the like. Connection ports <NUM> of multiports <NUM> may also comprise a keying feature (<NUM>) for mating with an appropriate connector <NUM>. Additionally, other multiport embodiments may have one or more securing features <NUM> for engaging with a suitable locking portion <NUM> of connector <NUM> or the like.

A plurality of optical fibers <NUM> are routed from one or more of the plurality of connection ports <NUM> toward an input connection port <NUM> for optical communication with the multiport <NUM>. The input connection port <NUM> may be configured in a variety of different manners with any of the multiports disclosed herein as appropriate. For the sake of simplicity and clarity in the drawings, all of the optical fiber pathways may not be illustrated or portions of the optical fiber pathways may be removed in places so that other details of the design are visible.

Comparative multiport <NUM> of <FIG> has eight optical fibers <NUM> routed from one or more of the plurality of connection ports <NUM> toward an input connection port <NUM> for optical communication with the multiport. Input connection port <NUM> may be configured in several different configuration for the multiports disclosed as desired for the given application. Examples of input connection ports include being configured as a single-fiber input connection, a multi-fiber input connector, a tether input that may be a stubbed cable or terminated with a connector or even one of the connection ports <NUM> may function as an input connection port as desired (see <FIG>). To make identification of the input connection port to the user, a marking indicia may be used such as color-coding of the input tether (e.g. an orange or green polymer) or physically marking the input connection port <NUM>.

In the embodiment shown in <FIG>, the input connection port <NUM> is configured as a <NUM>-fiber MT connection port as best shown in <FIG>. Consequently, an input cable (not numbered) comprises a complementary <NUM>-fiber MT connector <NUM> for mating with the <NUM>-fiber MT input connection port <NUM> and may be attached in any suitable manner such as a threaded connection, bayonet, push-pull, etc. as desired. Thus, there is a one-to-one correspondence of input optical fibers to the connection ports <NUM> for this multiport; however, other variations of multiports can have other configuration such as pass-through optical fibers, splitters, or the like which may not use a one-to-one correspondence of input optical fibers to connection ports <NUM> of the multiport. In other words, eight optical fibers from connector <NUM> are routed to the rear portion of connection port insert <NUM> for optical communication with the eight connection ports <NUM>.

Although not visible in <FIG>, a plurality of rear connectors <NUM> (not visible in <FIG>) are sized for fitting into one or more of the respective connector port passageways <NUM> from the rear portion <NUM> of connection port insert <NUM>, and the plurality of rear connectors <NUM> are associated with the plurality of optical fibers <NUM>. Thus, each of the eight optical fibers <NUM> of multiport <NUM> of <FIG> comprises a respective rear connector <NUM> that attaches to the connector port insert <NUM> from the rear portion <NUM> similar to arrangement shown in <FIG>. The plurality of rear connectors <NUM> may comprise a rear connector ferrule 252F as desired.

Multiports may also have one or more dust caps <NUM> for protecting the connection port <NUM> or input connection ports <NUM> from dust, dirt or debris entering the multiport or interfering with the optical performance. Thus, when the user wishes to make an optical connection to the multiport, the appropriate dust cap <NUM> is removed and then connector <NUM> of cable assembly <NUM> may be inserted into the respective connection port <NUM> for making an optical connection to the multiport <NUM>. Shells <NUM> may have any suitable shape, design or configuration as desired. The shell <NUM> of multiport <NUM> shown in <FIG>, further comprises a second end <NUM> comprising a second opening <NUM> and a second insert <NUM>' sized so that at least a portion of the second insert <NUM>' fits into the second opening <NUM> and cavity <NUM> of shell <NUM>. As shown second insert <NUM>' is configured as an end cap <NUM>. Second insert <NUM>' is an end cap <NUM> since it does not have any connection ports, pass-throughs, adapters or the like, but simply closes off the second opening <NUM> of multiport <NUM>. Still further, the connection port insert <NUM> or second insert <NUM>' may be secured to the shell using a fastener or the like if desired. Other shells <NUM> may only have a first opening as desired.

Any of the multiports <NUM> disclosed herein may optionally be weatherproof by appropriately sealing the connection port insert(s) <NUM>,<NUM>' with the shell <NUM> using any suitable means such as gaskets, O-rings, adhesive, sealant, welding, overmolding or the like. Moreover, the interface between the connection ports <NUM> and the dust cap <NUM> or connector <NUM> may be sealed using appropriate geometry and/or a sealing element such as an o-ring or gasket. Likewise, the input connection port may be weatherproofed in a suitable manner depending on the configuration such as a gasket, or O-ring with an optical connection or a heat shrink when using a input tether. If the multiport <NUM> is intended for indoor applications, then the weatherproofing may not be required.

However, the devices disclosed may locate the at least one connection port <NUM> in other portions or components of the device other than the connection port insert <NUM> using the concepts as disclosed herein as desired.

By way of explanation, other embodiments using the concepts disclosed herein may have the at least one connection port <NUM> being formed as a portion of a shell of the device. By way of explanation, at least one connection port <NUM> is molded as a first portion of shell <NUM> and a second portion of the shell <NUM> is a cover used for closing the opening such as at the bottom of the two-piece shell. In other words, instead of the parting line being in a vertical direction between the components of the connection port insert <NUM> and the shell <NUM> as shown in <FIG>, a parting line PL between components of the shell may be in a horizontal direction between a first portion 210A of the shell comprising at least one connection port <NUM> and a second portion 210B of the shell <NUM> such as depicted by a parting line PL in the devices of <FIG>. Thus, the concepts of the connection port <NUM> described herein may be integrated into a portion of the shell <NUM>, instead of being a portion of the connection port insert <NUM>. For the sake of brevity, the concept of forming at least one connection port <NUM> in a portion of the shell <NUM> will be shown with respect to <FIG>, but any suitable concepts disclosed herein may have the connection port <NUM> and construction for the retention feature or securing feature formed in a portion of the shell along with the other features or constructions disclosed.

<FIG> depicts a perspective view of another comparative multiport <NUM> comprising shell <NUM> comprising a first portion 210A and a second portion 210B that is similar to the multiport <NUM> of <FIG>, but has the connection ports <NUM> formed with the first portion 210A of the shell instead of being formed in a connection port insert <NUM>. Besides being formed from multiple components, this multiport <NUM> has a different shell <NUM> that further comprises integrated mounting features <NUM> disposed at the second portion 210B of shell <NUM>, but mounting features <NUM> may be disposed at any suitable location on the shell <NUM> or be used with other suitable shells <NUM>. Thus, the user may simply use a fastener and mount the multiport <NUM> to a wall or pole as desired. This multiport <NUM> also has a plurality of securing features <NUM> (in addition to the retention features 233a) for engaging with a suitable locking portion <NUM> of connector <NUM> or the like, which will be discussed in further detail below. Any of the other concepts disclosed herein may also be used with the connection ports <NUM> formed as a portion of the shell <NUM> as well.

Additionally, multiport <NUM> of <FIG> comprises an input tether <NUM> attached to the first portion 210A of the shell <NUM>. In this case, input tether <NUM> is terminated with a fiber optic connector <NUM>. An example of a suitable fiber optic connector <NUM> is an OptiTip® connector available from Corning Optical Communications LLC of Hickory, NC. However, other suitable single-fiber or multi-fiber connectors may be used for terminating the input tether <NUM> as desired. Input tether <NUM> may be secured to connection port insert <NUM> in any suitable manner such as adhesive, a collar or crimp (see <FIG>), heat shrink or combinations of the same.

Furthermore, the input tether <NUM> may further comprise a furcation body 270F that has a portion that fits into a portion of the shell or the connection port insert <NUM> such as the bore of input connection port or that is disposed within the shell <NUM>. The furcation body <NUM> is a portion of the input tether that transitions the optical fibers <NUM> to individual fibers for routing within the cavity <NUM> of the shell to the respective connector ports. As an example, a ribbon may be used for insertion into the back end of the ferrule of fiber optic connector <NUM> and then be routed through the input tether <NUM> to the furcation body 270F where the optical fibers are then separated out into individual optical fibers <NUM>. From the furcation body 270F the optical fibers <NUM> may be protected with a buffer layer or not inside the cavity <NUM> of the multiport <NUM> and then terminated on a rear connector <NUM> (see <FIG>) as desired.

Consequently, the input tether <NUM> with the furcation body 270F may be assembled with the rear connectors <NUM> and/or fiber optic connector <NUM> in a separate operation from the assembly of multiport <NUM>. Thereafter, the rear connectors <NUM> may be individually threaded through a bore 260B of the input connection port <NUM> (see <FIG> and <FIG>) of the connection port insert <NUM> with the appropriate routing of the optical fiber slack and then have the rear connectors <NUM> attached to the appropriate structure for optical communication with the connection port passageways <NUM> of the connection port insert <NUM>. The furcation body 270F may also be secured to the connection port insert in the manner desired.

<FIG> depict similar comparative multiports and will be discussed together and <FIG> depicts a suitable connection port insert <NUM> for these multiports. <FIG> is a front perspective view of multiport <NUM> having an input connection port <NUM> configured for receiving furcation body 260F of an input tether <NUM> as discussed, and <FIG> is a front perspective view of another multiport similar to <FIG> having an input tether <NUM> attached to the connection port <NUM> and configured as a stub cable. <FIG> is a partially exploded view of a multiport similar to the multiport of <FIG> showing the connection port insert <NUM> removed from shell <NUM> and the input tether <NUM> terminated with fiber optic connector <NUM>. <FIG> depicts a perspective view of the input connection insert of <FIG> and <FIG>, which is similar to the connection port insert <NUM> of <FIG>.

As depicted in <FIG>, input connection insert <NUM> comprises a fiber tray (not numbered) integrated with the body <NUM>. Fiber tray may include one or more supports <NUM> for providing strength for shell <NUM> to withstand any crushing forces. Including supports for multiports <NUM> greatly improves the strength between the opposing walls, and the supports may be included on other components such as the shell <NUM> or the integrated in a separate fiber tray such as depicted in the multiport <NUM> of <FIG>. Supports <NUM> may also act as fiber routing guides <NUM> to inhibit tight bending or tangling of the optical fibers and aid with slack storage of optical fibers <NUM>. Other embodiments can have other designs besides the body <NUM> of the connection port insert <NUM> comprising one or more fiber routing guides <NUM> or supports <NUM>. For instance, the fiber tray with supports or guides could be a dedicated component of multiports <NUM> (see <FIG>).

As shown in <FIG> and <FIG>, connection port inserts <NUM> may also comprise a sealing location 230SL to provide a surface and location for making a weatherproof attachment to shell <NUM>. Sealing location may be disposed at a first distance D1 from the front face <NUM> of the connector port insert <NUM>. Sealing location is a disposed at a suitable distance D1 for providing a suitable seal with the shell <NUM>. Connection port inserts <NUM> also have a connector mating plane 230MP disposed at a second distance D2 from the front face <NUM>. The connector mating plane 230MP is disposed within the cavity of the shell <NUM> of the multiport for protecting the connector mating interface. In some particular embodiments, the connector port insert <NUM> comprises a sealing location 230SL disposed at a first distance D1 from the front face <NUM> and the connector mating position 230MP is disposed at the second distance D2 from the front face <NUM> with the second distance D2 being greater than the first distance D1.

The connection port passageways <NUM> may be configured for the specific connector <NUM> intended to be received externally into the multiport <NUM>. Moreover, the connection port passageways <NUM> may be configured to provide a weatherproof seal with connector <NUM> or dust cap <NUM> for inhibiting dust, dirt, debris or moisture from entering the multiport <NUM> at a connection port passageway sealing surface 233SS (see <FIG>). Likewise, the connection port passageways <NUM> should be configured to receive the specific rear connector <NUM> from the rear portion <NUM> for mating and making an optical connection with the connector <NUM>. The connection port insert <NUM> shown in <FIG> is configured as a monolithic (e.g., integral) component for making the optical connection between the rear connectors <NUM> and the external connectors <NUM> of cable assembly <NUM>; however, other embodiments are possible according to the concepts disclosed that use multiple components. For instance, the connection port insert <NUM> may be configured to secure one or more adapters 230A thereto, and the adapters 230A can "float" relative to the connection port insert <NUM>. "Float" means that the adapter 230A can have slight movement in the X-Y plane for alignment, but is essentially inhibited from moving in the Z-direction along the axis of connector insertion so that suitable alignment may be made between mating connectors.

<FIG> and <FIG> depict sectional views showing the optical connections between respective rear connectors <NUM> attached at the rear portion <NUM> of the connection port insert <NUM> of the multiport <NUM> and connectors <NUM> of cable assemblies <NUM> attached from the front face <NUM>, and are similar to the optical connections shown in comparative multiports <NUM> of <FIG>. <FIG> is an isolated perspective view of the optical connection between rear connector <NUM> and connector <NUM> as represented in <FIG>.

Rear connector <NUM> shown in <FIG> comprises a ferrule 252F attached to optical fiber <NUM> and a retention body 252R attached to ferrule 252F, thereby forming a simple connector. Retention body 252R comprises a plurality of arms 252A with a protrusion 252P for securing the rear connector <NUM> with the retention feature 233A in the connection port passageway <NUM>. As shown, the connector mating plane 230MP is disposed within the disposed within the cavity of the shell <NUM> of the multiport for protecting the connector mating interface. As shown in <FIG>, connector <NUM> comprises at least one O-ring <NUM> for sealing with the connection port passageway <NUM> when fully inserted into the connection port <NUM>. Moreover, some connectors <NUM> may have a locking feature <NUM> on the housing <NUM> for cooperating with a securing feature <NUM> of multiports <NUM> if desired and discussed in more detail below.

Rear connectors <NUM> can have other configurations for use with the multiports disclosed herein. By way of example, rear connectors <NUM> may comprise a resilient member for biasing the rear connector ferrule 252F. Additionally, rear connectors <NUM> may further comprise a keying feature. Likewise, connection port insert <NUM> can have other configurations for use with the multiports disclosed herein. By way of example, the connection port insert may comprise a plurality of adapters 230A that are integrally-formed with the connection port insert <NUM>.

<FIG> respectively are a rear perspective sectional view, a top view and a rear perspective view of the optical connections and features of another connection port insert <NUM>. Connection port insert <NUM> shown in <FIG> comprise one or more adapters 230A that are integrally formed with the connection port insert <NUM>. In this particular example, the plurality of adapters 230A that are integrally formed with connection port insert <NUM> are configured for receiving SC connectors. Thus, rear connector <NUM> shown in <FIG> has a SC footprint. The SC connectors used as the rear connector <NUM> has a keying feature <NUM> that cooperates with the keying feature of adapter 230A. Additionally, adapters 230A comprise a retention feature 233A disposed in the connection port passageway <NUM> and are configured as latch arms for securing a SC connector at the rear portion <NUM> of connection port insert <NUM>. As best shown in <FIG>, connection port insert <NUM> depict comprises a plurality of slots <NUM> for receiving one or more securing features <NUM> that translate for engaging with a suitable locking portion <NUM> of connector <NUM> or the like.

Connection port insert <NUM> may have the input connection port <NUM> disposed in any suitable location on the connection port insert <NUM>. The previous embodiments of the connection port insert <NUM> depicted the input connection port <NUM> disposed in an outboard position of the connection port insert <NUM>. However, the input connection port <NUM> may be disposed in a medial portion of the connection port insert <NUM> as desired. As best shown in <FIG>, connection port insert <NUM> has input connection port <NUM> disposed in a medial portion of the connector port insert <NUM>. Further, the integrated adapters 230A are arranged in groups on either side of the input connection port <NUM> as depicted. Specifically, connection port insert <NUM> of <FIG> has a first group of integrated adapters 230A1 and a second group of integrated adapters 230A2 disposed on opposite sides of input connection port <NUM>. Consequently, the connection port insert <NUM> of <FIG> comprises a plurality of connection port sections.

<FIG> are rear perspective sectional views of a representative force diagram for the force interactions between the mating optical connections. In particular, the force diagrams are directed to mating optical connections where both sides of the mated optical connection may be displaced. Simply stated, the forces should between the both sides of these types of mated optical connections may be displayed there may be concerns with one side of the mated connection to over-travel beyond its desired location, which may lead to optical performance issues especially if the connection experiences several matings and uses a floating ferrule sleeve for alignment. This over-travel condition typically is not of concern for mated connections where only side of the connection may be displayed and the other side is fixed. An example of both sides of the mated optical connection being able to be displaced is represented when both connectors have ferrules that are biased and mated within a ferrule sleeve such as when a SC connector is mated with a connector <NUM> as depicted in <FIG>. Other embodiments could have an adapter sleeve that is biased instead of the rear connector ferrule being biased, which would result in a similar concern for being aware of forces that may result in over-travel conditions that could impact optical performance.

Multiports <NUM> that mate a rear connector <NUM> such as a SC with connector <NUM> that has a SC ferrule that is biased forward should have a spring force in connector <NUM> that mitigates concerns when mated within a ferrule sleeve or use a connector <NUM> that has a fixed ferrule for mitigating concerns. The spring force for connector <NUM> should be selected to be in a range to overcome sleeve friction and the spring force of the rear connector <NUM>. By way of explanation, when the rear connector <NUM> is first inserted into the adapter 230A of connection port insert <NUM>, the ferrule 252F of the rear connector <NUM> contact the ferrule sleeve 230FS and may displace the ferrule sleeve 230FS to extreme position on the right before the ferrule sleeve 230FS hits a physical stop in the adapter and the ferrule 252F is inserted into the ferrule sleeve 230FS. Thus, when the connector <NUM> is later inserted into the connector port <NUM> of the multiport it would be helpful for the ferrule to push the ferrule sleeve 230FS from an extreme position in the adapter if it was displaced. Consequently, the spring selected for biasing the ferrule of connector <NUM> should overcome the sum of initial friction along with the insertion friction to move the ferrule sleeve 230FS, thereby inhibiting the ferrule sleeve 230FS from being displaced at a maximum displaced position due to the rear connector <NUM> being inserted for mating first. <FIG> are perspective views of shells <NUM> for comparative multiports <NUM> having various configurations. As depicted, shells <NUM> are monolithically formed and comprise at least a first end <NUM> having a first opening <NUM> leading to a cavity <NUM>. Other variations of shells <NUM> may comprise a second end <NUM> having a second opening <NUM> such as depicted herein. Second opening <NUM> is configured for receiving a second insert <NUM>' so that at least a portion of the second insert <NUM>' fits into the second opening <NUM> and cavity <NUM> of shell <NUM>. Second insert <NUM>' may comprise a body <NUM> having a front face <NUM> and comprise a plurality of connection ports <NUM> having an optical connector opening <NUM> like the connection port insert <NUM>. Shells <NUM> may be made from any suitable material such as metal or plastic and may have any suitable shape as desired. As discussed with other embodiments, multiports may include mounting features <NUM> integrated into the shell <NUM>. Additionally, shells <NUM> may comprise at least one support <NUM> disposed within cavity <NUM>, thereby providing crush support for the multiport and resulting in a robust structure.

Shells <NUM> and connector port inserts <NUM> allow relative small multiports <NUM> having a relatively high-density of connections along with an organized arrangement for connectors <NUM> exiting the multiports <NUM>. Shells have a given height H, width W and length L that define a volume for the comparative multiport as depicted in <FIG>. By way of example, shells <NUM> may defines a volume of <NUM> cubic centimeters or less, other embodiments of shells <NUM> may define the volume of <NUM> cubic centimeters or less, other embodiments of shells <NUM> may define the volume of <NUM> cubic centimeters or less as desired. Some embodiments of multiports <NUM> comprise a connection port insert <NUM> having a density of at least one connection port <NUM> per <NUM> millimeters of width W of the connection port insert. Likewise, embodiments of multiports <NUM> may comprise a given density per volume of the shell <NUM> as desired.

Furthermore, multiports <NUM> may have any suitable arrangement of connection ports <NUM> in connector port insert <NUM>. By way of explanation, <FIG> are perspective views of various other comparative multiports <NUM> having other form-factors such as multi-row arrays in similar sized packages. In other words, the multiports <NUM> of <FIG> have similar lengths L and widths W, but by slightly changing the height H of the multiports <NUM> the density of connectors per width of the multiport may be significantly increased. For instance, multiport <NUM> of <FIG> has four connector ports for its volume with a given height H, with a small increase in height H multiport <NUM> of <FIG> has eight connector ports for its volume, and with another small increase in height H multiport <NUM> of <FIG> has twelve connector ports for its volume. Part of the increase in connection port density per volume is attributable to the staggered position of the connection ports <NUM> in the rows. Although, the multiports shells depicted have generally planar major surfaces other suitable shapes are possible such as a curved shell or other shapes as desired. The skilled person will immediately recognize the advantages of the multiports of the present disclosure over the conventional multiports.

Table <NUM> below compares representative dimensions, volumes, and normalized volume ratios with respect to the prior art of the shells (i.e., the housings) for multiports having <NUM>, <NUM> and <NUM> ports as examples of how compact the multiports of the present application are with respect to convention prior art multiports. Specifically, Table <NUM> compares examples of the conventional prior art multiports such as depicted in <FIG> with multiports having a linear array of ports and a staggered array of ports such as shown in <FIG>. As depicted, the respective volumes of the conventional prior art multiports of <FIG> with the same port count are on the order of ten times larger than multiports with the same port count as disclosed herein. By way of example and not limitation, the shell of the multiport may define a volume of <NUM> cubic centimeters or less for <NUM>-ports, or even if double the size could define a volume of <NUM> cubic centimeters or less for <NUM>-ports. Shells for smaller port counts such as <NUM>-ports could be even smaller such as the shell defining a volume of <NUM> cubic centimeters or less for <NUM>-ports, or even if double the size could define a volume of <NUM> cubic centimeters or less for <NUM>-ports. Consequently, it is apparent the size (e.g., volume) of multiports of the present application are much smaller than the conventional prior art multiports of <FIG>. In addition to being significantly smaller, the multiports of the present application do not have the issues of the conventional prior art multiports depicted in <FIG>. Of course, the examples of Table <NUM> are for comparison purposes and other sizes and variations of multiports may use the concepts disclosed herein as desired.

One of the reasons that the size of the multiports may be reduced in size with the concepts disclosed herein is that the connectors <NUM> that cooperate with the multiports may have locking features <NUM> that are integrated into the housing <NUM> of the connectors. In other words, the locking features for securing connector <NUM> are integrally formed in the housing <NUM> of the connector, instead of being a distinct and separate component like the conventional connector. Conventional connectors for multiports have threaded connections that require finger access for connection and disconnecting. By eliminating the threaded coupling nut (which is a separate component that must rotate about the connector) the spacing between conventional connectors may be reduced. Also eliminating the dedicated coupling nut from the conventional connectors also allows the footprint of the connectors to be smaller, which also aids in reducing the size of the multiports disclosed herein.

<FIG> is a top view of comparative multiport <NUM> having cable assemblies <NUM> removably secured using retention features 233A. Multiport is similar to other multiports discussed herein, but further comprise retention features 233A that fit into a bore 230B of connector port insert <NUM>. Bore 230B intersects a portion of the connector opening <NUM> so that retention features 233A intersects a portion of the connector opening <NUM> and provides a snap-fit with a groove, scallop or the like formed in a housing <NUM> of connector <NUM>. Stated another way, when connector <NUM> is pushed into connector opening <NUM> of connection port <NUM> the connector <NUM> engages and slightly deflects the respective retention feature 233A until the retention feature 233A is seated in the groove or scallop of connector <NUM>, thereby provide a retention for the connector <NUM> in the connector port. By way of example, one embodiment could have the retention feature 233A configured as a fixed plastic pin sized to snuggly fit or be attached within bore 230B so a slight force is required to seat connector <NUM>.

However, by changing the material and operation, the retention feature 233A may become a securing feature <NUM>. By way of explanation, the pin could be configured so that it translates into and out of the paper within bore 230B and made of a more rigid material such as metal. Consequently, the metal pin could secure a dust cap <NUM> by cooperating with a scallop or groove in the dust cap <NUM> so when the pin is in a closed position the dust cap <NUM> could not be removed and protects the connection port <NUM>. When the user desired to insert a connector into the connection port <NUM>, he would move the pin to an open position by translating the pin out of paper so the pin did not interfere with the removal of the dust cap <NUM>. Then the user could insert the connector <NUM> into the connection port <NUM> and translate the pin back into the paper so that the pin engaged a complementary scallop or groove on connector <NUM> and removal of the connector is inhibited. Thus, the retention 233A becomes securing feature <NUM> for securing the connector <NUM> within the connection port <NUM>. Alternatively, the pin could have a flat portion and when the pin is rotated to the flat portion facing the scallop or groove then insertion and removal of the connector past the pin is allowed and when the pin rotates to a round portion the scallop or groove is engaged by the pin and the connector <NUM> is inhibited from being removed or inserted, thereby acting as a securing feature <NUM>. Other variations could have the pin with a flat surface that rotates as the connector <NUM> is inserted or removes by having the rotation of the pin being driven by the surface of the connector <NUM>. Illustratively, <FIG> depicts such an arrangement for the pin acting as a securing feature <NUM> for connector <NUM>.

<FIG> is a perspective view of comparative multiport <NUM> similar to the other multiport disclose having connector port insert <NUM> sealing location 230SL and an end cap <NUM> with sealing location 280SL. The multiport of <FIG> has a sealing element <NUM> disposed between the connection port insert <NUM> and the shell <NUM>. Any of the other multiports <NUM> may also use similar features as described. In this embodiment, the sealing locations 230SL,280SL comprise respective grooves in the connector port insert <NUM> and end cap <NUM>. Grooves (not numbered) of the sealing locations 230SL,280SL extend about the perimeter of the connection port insert <NUM> and the end cap <NUM> and are located at respective distances D1 from the front face <NUM> of the connection port insert <NUM> and end cap <NUM>. Grooves may receive one or more appropriately sized O-rings or gaskets 290A for weatherproofing multiport <NUM>. In other words, the O-rings or gaskets 290A are disposed about a part of the connector port insert <NUM> and the end cap <NUM>. As depicted, distance D1 is less than distance D2 to the connector mating plane 230MP. The O-rings are suitable sized for creating a seal between the connector port insert <NUM> and the shell <NUM> and for the end cap <NUM>. By way of example, suitable O-rings are a compression O-ring that may maintain a weatherproof seal.

Any of the multiports <NUM> disclosed herein may optionally be weatherproof by appropriately sealing the connection port insert or second insert <NUM>,<NUM>' with the shell <NUM> using other suitable means such as adhesive, sealant, welding, overmolding or the like. For instance, adhesive or sealant may be applied about the perimeter of the insert. Likewise, welding such as ultrasonic or induction welding may be used as appropriate for the sealing element <NUM>. Moreover, the interface between the connection ports <NUM> and the dust cap <NUM> or connector <NUM> may be sealed using appropriate geometry and/or a sealing element such as an O-ring or gasket. Likewise, the input connection port may be weatherproofed in a suitable manner depending on the configuration such as a gasket, or O-ring with an optical connection or a heat shrink when using a input tether. Thus, making the multiports <NUM> suitable for an outdoor environment.

Multiports <NUM> can have other features or constructions using a second insert <NUM>' that is similar to the connection port insert <NUM>. For instance, the second insert <NUM>' comprises a body <NUM> having a front face <NUM> comprising a plurality of connection ports <NUM> having an optical connector port opening <NUM> like the connection port insert <NUM>. Second inserts <NUM>' can have other configurations as well for use with the multiports disclosed herein. Moreover, any of the multiport designs disclosed herein may use an optical splitter <NUM> (hereinafter "splitter") within a cavity <NUM> or furcation body 270F of the multiports <NUM>. By way of example, splitters <NUM> allow a single optical signal to be split into multiple signals such as 1xN split, but other splitter arrangements are possible such as a 2xN split. For instance a single optical fiber may feed an input tether <NUM> of multiport <NUM> and use a 1x8 splitter to allow eight connection ports <NUM> on the connection port insert.

<FIG> are perspective views of comparative multiports <NUM> similar to the multiport of <FIG>, but use one or more adapters 230AF received in the connection port insert <NUM> that float relative to the connection port insert <NUM>. <FIG> depicts multiport <NUM> having splitter <NUM> and a second insert <NUM>'. Connection port insert <NUM> and second insert <NUM>' both are configured to securing one or more adapters thereto where the adapters 230AF float relative to the connection port insert and the second insert <NUM>'. Second insert <NUM>' is similar to connection port insert <NUM>, but it does not have an input connector port <NUM> like the connection port insert, but second insert <NUM>' comprises connection ports <NUM> for receiving connectors <NUM>. Connection port insert <NUM> includes an integrated housing <NUM> for receiving individual adapters 230AF from the rear portion. Housing <NUM> has suitable structure for securing adapters 230AF so they float by using suitable geometry for securing the adapters 230AF. Specifically, housing <NUM> allows that adapters 230A to have slight movement in the X-Y plane for alignment, but essentially inhibits the adapters 230A from moving in the Z-direction along the axis of connector insertion so that suitable alignment may be made between mating connectors. Multiport of <FIG> also comprises a splitter <NUM> that receives an optical fiber <NUM> for a 1x16 split for feeding eight optical fibers to the connection port insert <NUM> and eight optical fibers to the second insert <NUM>'.

<FIG> are perspective views of comparative multiports <NUM> similar to the comparative multiport <NUM> of <FIG>. <FIG> is a close-up of showing housing <NUM> and <FIG> shows the connector port insert with housing <NUM> for showing the individual adapters 230AF. Adapters 230AF receive rear connectors <NUM> that are similar to the rear connectors <NUM> depicted in <FIG> for mating with connectors <NUM> received in respective connection ports <NUM> of connector port insert <NUM> as shown. Rear connectors <NUM> and connectors <NUM> make their optical connections at mating optical plane 230MP as discussed herein.

<FIG> and <FIG> depict perspective views of comparative multiports <NUM> similar to other multiports having a second insert such as disclosed herein, except that the second inserts <NUM>' comprises at least one pass-through port <NUM>. <FIG> shows the tethers <NUM> configured with boots for providing strain relief. Tethers <NUM> may either be configured as stub cables or may be terminated with fiber optic connectors <NUM> as desired. <FIG> depicts a perspective view of an alternative second insert <NUM>' having a pass-through port with an integrated adapter 230A for receiving a fiber optic connector. Second insert <NUM>' also includes a retaining structure 230RS for securing connector <NUM> to the second insert <NUM>' such as depicted in FIG.

<FIG> are various views of comparative multiports having one or more attachment features. As depicted, the connector port insert <NUM> or second insert <NUM>' further comprise one or more attachment features. By way of explanation, the attachment features are dovetail openings or a dovetail protrusion disposed on the connection port insert <NUM> or second insert <NUM>'. <FIG> show the one or more attachment features may comprise a top attachment feature and a bottom attachment feature where the top attachment feature is offset from the bottom attachment feature along a longitudinal direction of the connector port insert. <FIG> shows the one or more attachment features are arranged along a longitudinal direction of the multiport <NUM> and <FIG> shows the one or more attachment features are arranged transverse to a longitudinal direction of the multiport <NUM>.

<FIG> are various views of comparative multiports <NUM> and designs associated with mounting structures <NUM> for the multiports <NUM>. Specifically, the mounting structure <NUM> comprises a cover <NUM>. In some embodiments, the cover <NUM> pivots relative to a base <NUM>. <FIG> shows a mounting structure <NUM>' for multiport <NUM> that may rotate.

<FIG> are various perspective views of comparative multiports <NUM> having at least one securing feature <NUM> associated with one or more of the connection ports <NUM>. Although, this multiport <NUM> is shown with a connection port insert <NUM>, the construction of this multiport may be is similar to the multiport of <FIG> with a first portion 210A of the shell <NUM> having the connection port <NUM> formed therein as well as the other multiports disclosed herein. Multiport <NUM> of <FIG> comprise an input connection port <NUM> suitable for making a connection with a fiber optic connector <NUM> of the input tether similar to the multiport of <FIG>. In this embodiment, securing feature <NUM> has an open position OP and a closed position CP. Securing feature <NUM> translates between the open position OP and the closed position, but other securing features may rotate when transitioning from positions. In the open position OP the dust cap <NUM> may be removed and the connector <NUM> inserted into connection port <NUM>. The open position for the securing feature <NUM> occurs when the securing feature is translated to an upward position to stick-up from the slots <NUM> and the closed position occurs when the securing feature <NUM> is translated to fully-seated within the respective slot <NUM>. However, the securing feature <NUM> may have other positions as discussed herein.

Any suitable type of securing features may be used with the concepts disclosed herein and examples of the same are disclosed. Depending on the type of securing feature different types of actuation movement may be used for translation such as rotation, translation, or deforming of components. Further, embodiments may include other components such as protectors or covers 230C for keeping dirt, debris and other contaminants away from the actuation mechanism as desired.

By way of example and illustration, securing feature <NUM> of the comparative multiport of <FIG> is a U-clip that translates within a respective slot <NUM> formed in connection port insert <NUM>. U-Clip is shown in further detail in <FIG>52D. Each securing feature <NUM> of this embodiment is associated with a single connection port <NUM> such as shown in <FIG> so that a securing feature <NUM> must be translated when accessing an individual connection port <NUM>. Securing feature <NUM> interfaces with the locking feature <NUM> disposed on the housing of connector <NUM> for securing or releasing connector <NUM>. Likewise, the securing feature <NUM> interfaces with a the locking feature disposed on the dust cap <NUM> for securing or releasing dustcape <NUM> as desired.

<FIG> are various perspective views of comparative multiport <NUM> similar to the multiports of <FIG> having at least one securing feature <NUM> associated with each connection port <NUM> and is configured as a U-clip. Multiport <NUM> of <FIG> comprises an input tether <NUM> similar to the multiport of <FIG> and will not be discussed with this embodiment for brevity. Moreover, the designs with securing features may use any suitable concepts or features disclosed herein. <FIG> depicts the securing feature <NUM> on the near end of the multiport <NUM> in an open position OP with a connector <NUM> aligned for insertion into the connection port <NUM>.

<FIG> is a front exploded view of the comparative multiport <NUM> of <FIG> and <FIG> is a partially rear exploded view of a portion of the multiport <NUM> of <FIG>. <FIG> are various assembled views of a portion of the comparative multiport <NUM> of <FIG> with the shell <NUM> removed for clarity. Comparative multiport <NUM> of <FIG> comprises shell <NUM> having a first opening <NUM> leading to a cavity <NUM> and a connection port insert <NUM> similar to other multiports <NUM>. The connection port insert <NUM> of is multiport <NUM> is configured to secure one or more adapters 230AF thereto, where the adapters 230AF float relative to the connection port insert. Adapters 230AF are configured to receive rear connectors <NUM> with a SC footprint and the respective adapters 230AF include ferrule sleeves 250FS for aligning mating ferrules between rear connectors <NUM> and connector <NUM>. Adapters 230AF may be ganged together or formed individually. Moreover, the adapters 230AF may be formed from several components, but some components could be integrally formed. This multiport include a fiber tray <NUM> that is a discrete component that may attach to connector port insert <NUM>. Like other fiber trays, this fiber tray includes supports <NUM> and fiber routing guides <NUM>. Support <NUM> provides crush strength to the shell <NUM>.

As best shown in <FIG>, input tether <NUM> is secured to the connection port insert <NUM> using a collar <NUM> that fits into cradle 273C (see <FIG>) of the connection port insert <NUM>. This attachment of the input tether <NUM> using collar <NUM> and cradle 273C provides improved pull-out strength and aids in manufacturing; however, other constructions are possible for securing the input tether <NUM>. Input tether <NUM> may also comprise tubes <NUM> for organizing and protecting the optical fibers <NUM> as they transition to the respective connection port sections and route about supports <NUM>. Tubes <NUM> also protected the optical fibers from overly tight bends, pinching and tangling, but may be omitted as desired.

<FIG> are front and rear perspective views of the connection port insert <NUM> and <FIG> are various views of the connection pot insert <NUM> comparative multiport of <FIG>. Connection port insert <NUM> is similar to other connection port inserts, but comprises a plurality of fingers 230F for securing the adapters 230AF so they may float. As depicted, connection port insert <NUM> has slots <NUM> molded therein for receiving the securing features <NUM> therein in a translating manner. Securing features <NUM> of the multiport <NUM> of <FIG> may have more than two positions as desired. By way of example, <FIG> are perspective views of the connection port insert <NUM> and a securing feature <NUM> for explaining the open position OP, intermediate position IP and close position CP for the securing features <NUM> relative to connector <NUM> being inserted into the connection port <NUM>. This explanation is also suitable for the dust caps <NUM>. <FIG> depicts the securing feature <NUM> in an open position where the securing feature translates to the extended position where connector <NUM> may be freely inserted or removed from the connection port <NUM>. <FIG> depicts the securing feature <NUM> in an intermediate position where the securing feature translates to a middle position where connector <NUM> may be inserted or removed from the connection port with some effort required to overcome the interference with the securing feature <NUM>. This is advantageous if a user wishes to work in difficult location and needs his hands free since unintended disconnection is not as likely. <FIG> depicts the securing feature <NUM> in a closed position where the securing feature translates to fully seated position and the connector <NUM> will not be inserted or removed without great difficulty or damage.

<FIG> is an isolated perspective view of securing feature <NUM> and connector <NUM> of <FIG>. A depicted the tapered portion 310TP of the legs of the securing feature <NUM> push the connector <NUM> forward for mating after engaging the securing feature <NUM>. However, other types of securing features <NUM> configured as clips may be used with the concepts disclosed. By way of example, <FIG> show securing feature <NUM> formed as a bent wire that cooperates with the multiport for securing connector <NUM>. Likewise, <FIG> depict another securing feature <NUM> configured as a flexible or deformable wire that cooperates with the multiport for securing connector <NUM>.

<FIG> and <FIG> respectively are detailed top and perspective views of the connector port insert <NUM> having slots <NUM> for cooperating with securing feature <NUM> of <FIG> and securing the connector <NUM> in multiports <NUM>. Generally speaking, the slots <NUM> may have a generally T-shaped opening for receiving a rolled edge 310RE of securing feature <NUM> and a bell-shaped recess at the top for receiving a portion of handle <NUM>. Moreover, the slots <NUM> may include protruding stops PS for helping the user stop at the correct positions.

<FIG> are various views of the securing feature <NUM> that translates within the slots <NUM>. Securing feature <NUM> comprises legs <NUM> that are flexible along the lateral axis so they can spread when the connector <NUM> is pushed-in or pulled-out when in the intermediate position IP. Rolled edges 310RE provide stiffness and durability for the securing feature. Securing feature <NUM> may also have a handle <NUM> to help grab and move the securing feature <NUM>. The securing feature <NUM> may also include a hydrophobic coating for weather-resistance such as PTFE as desired.

<FIG> are perspective and partially assembled views of other comparative multiports <NUM> similar to the comparative multiports of <FIG> having multiple adapters ganged together in common adapter blocks 200A1,200A2 on either side of the input tether. <FIG> is a sectional view of the optical connections of the multiport in <FIG> showing the optical connection between a rear connector <NUM> and connector <NUM> being mated in the common adapter block 200A2.

<FIG> are perspective views of another comparative multiport <NUM> similar to <FIG> showing a different dust cap configuration that can be mated with the dust cap <NUM> of the optic connector <NUM> for storage. Specifically, the dust cap <NUM> of multiport <NUM> is suitable for attaching to the dust cap <NUM> of connector <NUM> when connector <NUM> is optically connected with multiport <NUM> to prevent loss of the dust caps and inhibit dust, debris or the like to contaminate the dust caps. The dust caps of the multiport <NUM> are tethered to the multiport <NUM> so the mated dust caps <NUM>,<NUM> will not be lost.

<FIG>are perspective views of another comparative multiport similar to <FIG> showing another dust cap configuration for storage. In this configuration, the multiport <NUM> has ganged dust caps <NUM> with each dust cap <NUM> attached to a rail 295R by a tether 295T. The rail 295R is configured to engage a groove 230DR formed in the connection port insert <NUM>. Consequently, the dust caps <NUM> of the multiport <NUM> are tethered to the multiport <NUM> so the dust caps <NUM> will not be lost.

<FIG> are perspective views of still another comparative multiport <NUM> similar to <FIG> showing yet another dust cap configuration that is similar to the dust cap configuration of <FIG>. In this case, the multiport <NUM> has ganged dust caps <NUM> with each dust cap <NUM> attached to a rail 295R by a tether 295T. The rail 295R is configured to engage a bores 230DB formed in the connection port insert <NUM> using protrusions 295P on rail 295R that cooperate with bores 230DB. Consequently, the dust caps <NUM> of the multiport <NUM> are tethered to the multiport <NUM> so the dust caps <NUM> will not be lost.

<FIG> are perspective and sectional views of a multiport <NUM> according to the invention having at least one rotating securing feature <NUM> associated with a plurality of connection ports <NUM>. The multiport <NUM> depicted in <FIG> comprises connection port insert <NUM> having at least one flexure 230F (see <FIG>) associated with at least one of the connection ports <NUM>. In this multiport <NUM> each connection port <NUM> has a dedicated flexure 230F disposed on the connection port insert <NUM>. The securing feature <NUM> of this multiport <NUM> is associated with a plurality of flexures 230F. Like the translating securing feature <NUM>, the rotating securing feature <NUM> has an open position OP and a closed position CP. The rotating securing feature <NUM> comprises a cam surface 310CS that determines whether the flexures 230F are deflected or not based on the rotational position of the cam surface. Further, the rotating securing feature <NUM> may be configured for comprising an open position OP, an intermediate position IP and a closed position CP if desired by configuring the cam surface 310CS to provide the three positions based on the degree of deflection of the flexure 230F. The securing feature <NUM> depicted in <FIG> deflects at least one and in this case a plurality of flexures 230F when in the closed position CP.

As depicted in <FIG>, multiport <NUM> comprises two securing features <NUM>. Specifically, a first securing feature operates the flexures 230F on a first side of input tether <NUM> and a second securing feature operates the flexures 230F on the second side of input tether <NUM>. <FIG> is a detailed perspective view of flexure 230F being associated with at least one of the connection ports <NUM>. In this case, each securing feature <NUM> is associated with four connection ports <NUM> and cooperates with four flexures 230F. <FIG> is a sectional view depicting cam surface 310CS. Connection port insert <NUM> comprises one or more bores for receiving a portion of the at least one securing feature <NUM> as shown. In this case, bore 230B is arranged transversely to a longitudinal axis LA of the connection port insert. When cam surface 310CS deflects flexure 230F the flexure 230F engages the locking feature <NUM> on the housing of connector <NUM> to determine which position is achieved open position, intermediate position or closed position. <FIG> depicts the cam surfaces 310CS of securing feature <NUM> uses the multiport <NUM> of <FIG>. Securing feature <NUM> also includes a handle <NUM> that is accessible near the end of the connection port insert as shown in <FIG>. Other variations of these concepts are also possible such as having the securing feature <NUM> cooperate with more or less connection ports <NUM>. Likewise, the securing feature may have different orientations relative to the connection port insert.

<FIG> are perspective views of still other multiports <NUM> similar to the multiport <NUM> of <FIG> having at least one rotating securing feature associated with a plurality of connection ports. Like the multiport <NUM> of <FIG>, this multiport <NUM> comprises the connection port insert <NUM> having at least one flexure 230F associated with at least one of the connection ports <NUM> just like before; however, in these embodiments the second insert is used that is similar to the first connection port insert. Thus, both ends of shell <NUM> have connection port inserts with securing features <NUM> such as described with respect to <FIG>.

<FIG> are perspective views of still another multiport having a dedicated rotating securing feature <NUM> associated with each connection port and the connection port insert <NUM> having a flexure 230F associated with each of the connection ports <NUM>. The operation of this multiport <NUM> is very similar to the operation of the multiport <NUM> in <FIG>, except that each connector port has a dedicated securing feature <NUM> to individually control the flexure 230F for each connection port <NUM>. In other words, the eight connection ports <NUM> each has their own securing feature to deflect the flexure 230F associated with each connection port <NUM>. Thus, each securing feature cooperates with only one flexure 230F for this configuration. To accomplish this arrangement, the securing features <NUM> are angled with respect the horizontal axis. Moreover, the flexures 230F are also angle with the horizontal axis to allow room for the securing features <NUM>. Like the other embodiments the cam surfaces 310CS can be tailor to provide the desired positions either open position and closed position or add an intermediate position between the open position and closed position. Like the other embodiments, the securing feature <NUM> may also work with the dust cap such as shown in <FIG> shows details of how the securing feature <NUM> is disposed with the bore 230B of the connection port insert. <FIG> shows the arrangement of the securing features <NUM> with the connection port insert <NUM> removed to depict the angled arrangement.

<FIG> are perspective and sectional views of another comparative multiport <NUM> showing a translating securing feature <NUM> associated with each connection port <NUM> and a flexure 230F. Each connection port <NUM> has its own securing feature <NUM> to deflect the flexure 230F associated with each connection port <NUM>; however, several flexures 230F may be driven by a single securing feature <NUM> if desired. This construction uses securing features <NUM> that translate from left-to-right so that a protrusion 310P disposed on each securing feature <NUM> drives each flexure 230F as best shown in <FIG>. Like the other embodiments the protrusion or flexures may be tailored for providing the desired positions either open position and closed position or add an intermediate position between the open position and closed position. Like the other embodiments, the securing feature <NUM> may also work with the dust cap such as shown in <FIG>. Further, the connection port insert <NUM> may further comprise a cover 230C for protecting the securing mechanism from dirt, debris and the like. Cover 230C may also inhibit unintended actuation of the securing features <NUM> when in the closed position.

<FIG> is a partial sectional view of another comparative multiport <NUM> showing a translating securing feature <NUM> associated with each connection port <NUM> and a flexure 230F similar to the embodiment shown in <FIG>. Each connection port <NUM> has its own securing feature <NUM> to deflect the flexure 230F associated with each connection port <NUM>; however, several flexures 230F may be driven by a single securing feature <NUM> if desired. This construction uses securing features <NUM> that translate from front-to-back so that a protrusion 310P on the securing feature <NUM> drives each flexure 230F. Like the other embodiments the protrusion or flexures may be tailored for providing the desired positions either open position and closed position or add an intermediate position between the open position and closed position. Like the other embodiments, the securing feature <NUM> may also work with the dust cap. Further, the connection port insert <NUM> may further comprise a cover 230C for protecting the securing mechanism from dirt, debris and the like.

<FIG> is a partial view of another multiport <NUM> according to the invention showing a rotating securing feature <NUM> associated with each connection port <NUM> and a flexure 230F similar to other embodiments. Each connection port <NUM> has its own securing feature <NUM> to deflect the flexure 230F associated with each connection port <NUM>. This construction uses securing features <NUM> that rotates about the Z-axis from left-to-right so that a protrusion 310P on the securing feature <NUM> drives each flexure 230F. In this embodiment the securing feature <NUM> acts like a toggle, but could be tailored for providing the desired positions either open position and closed position or add an intermediate position between the open position and closed position. Like the other embodiments, the securing feature <NUM> may also work with the dust cap. Further, the connection port insert <NUM> may further comprise a cover 230C for protecting the securing mechanism from dirt, debris and the like. Other variations of securing features that rotate about the Z-axis are also possible such as rotating partially concentric with the port instead of having the axis of rotation at a distance from the middle of the port.

<FIG> is a partial top view of another comparative multiport <NUM> showing a rotating securing feature <NUM> associated with each connection port <NUM> and a flexure 230F similar to the embodiment shown in <FIG>. Each connection port <NUM> has its own securing feature <NUM> to deflect the flexure 230F associated with each connection port <NUM>. This construction uses securing features <NUM> that rotates about the Y-axis from left-to-right so that a protrusion 310P on the securing feature <NUM> drives each flexure 230F. In this embodiment the securing feature <NUM> acts like a toggle, but could be tailored for providing the desired positions either open position and closed position or add an intermediate position between the open position and closed position. Like the other embodiments, the securing feature <NUM> may also work with the dust cap. Further, the connection port insert <NUM> may further comprise a cover 230C for protecting the securing mechanism from dirt, debris and the like.

<FIG> is a perspective view of a portion of a connection port insert <NUM> for a comparative multiport having a securing feature associated with each connection port that receives a connector <NUM> having a partial-turn securing feature.

<FIG> are a perspective views of an connection port insert <NUM> and variation configured as single adapter port that may be used with comparative multiports <NUM> disclosed herein such as at entry and exit locations.

The present application also discloses methods for making a multiport. One method comprises inserting a connection port insert <NUM> into an opening <NUM> disposed in a first end <NUM> of an shell <NUM> so that at least a portion of the connection port insert <NUM> fits into the opening <NUM> and is disposed within a cavity <NUM> of the shell <NUM>; and wherein the connection port insert <NUM> comprises a body <NUM> having a front face <NUM> and a plurality of connection ports <NUM> with each connector port <NUM> having an optical connector opening <NUM> extending from the front face <NUM> into the connection port insert <NUM> with a connection port passageway <NUM> extending through part of the connection port insert to a rear portion <NUM>.

Another method for making a multiport comprises routing a plurality of optical fibers <NUM> from one or more rear portions <NUM> of a plurality of connection ports <NUM> of a connection port insert <NUM> so that the plurality of optical fibers <NUM> are available for optical communication at an input connection port <NUM> of the connection port insert <NUM>. Then inserting the connection port insert <NUM> into an opening <NUM> disposed in a first end <NUM> of a shell <NUM> so that at least a portion of the connection port insert <NUM> fits into the opening <NUM> and is disposed within a cavity <NUM> of the shell <NUM>; and wherein the connection port insert <NUM> comprises a body <NUM> having a front face <NUM> and a plurality of connection ports <NUM> with each connector port <NUM> having an optical connector opening <NUM> extending from the front face <NUM> into the connection port insert <NUM> with a connection port passageway <NUM> extending through part of the connection port insert to the rear portion <NUM>.

The methods disclosed may further include installing at least one securing feature <NUM> into the connection port insert <NUM> so that the at least one securing feature <NUM> is associated with one or more of the plurality of connection ports <NUM>. The securing feature <NUM> may include an open position OP and a closed position CP. The method may include translating or rotating the at least one securing feature <NUM> to the open position OP and the closed position CP.

The method may also comprise a connector port insert <NUM> having one or more slots <NUM> for receiving a portion of the at least one securing feature <NUM>. The securing feature may be a U-clip with the methods disclosed.

The methods of actuating the securing features may comprises one or more bores 230B for receiving a portion of the at least one securing feature <NUM>. Further, the one or more bores 230B may be arranged transversely to a longitudinal axis LA of the connection port insert <NUM>. The securing feature may comprises a cam surface 310C. The method of actuating may comprise a plurality of securing features <NUM> associated with one or more of the plurality of connection ports <NUM> or using a single securing feature <NUM> associated with a plurality of connection ports <NUM>. Additionally, the step of actuating the at least one securing feature <NUM> may comprises an intermediate position IP, wherein the intermediate position IP permits connector insertion into the one or more of the plurality of connection ports <NUM> and connector removal into the one or more of the plurality of connection ports <NUM>.

Methods of making multiport make also include providing connection port inserts <NUM> having one or more flexures that cooperate with one or more securing features <NUM> as disclosed herein.

Claim 1:
A multiport (<NUM>) for providing an optical connection, comprising:
a shell (<NUM>);
a plurality of connection ports (<NUM>) with each connection port (<NUM>) comprising an optical connector opening (<NUM>) and a connection port passageway (<NUM>);
a plurality of flexures (230F) with each flexure (230F) associated with a respective connection port (<NUM>);
a plurality of optical fibers (<NUM>) with each optical fiber (<NUM>) being routed from the respective connection port (<NUM>) toward an input connection port (<NUM>) within the shell (<NUM>);
a plurality of rear connectors (<NUM>) with each rear connector (<NUM>) in communication with the respective connection port passageway (<NUM>), wherein the respective rear connector (<NUM>) is associated with the respective optical fiber (<NUM>); and
at least one securing feature (<NUM>) associated with the respective connection port (<NUM>) and suitable for retaining an external fiber optic connector received by the respective connection port (<NUM>), characterized in that the at least one securing feature (<NUM>) cooperates with the at least one flexure (230F) for deflecting the flexure (230F) toward the connection port passageway (<NUM>), wherein the at least one securing feature (<NUM>) has an open position (OP) and a closed position (CP) and rotates between the open position (OP) and the closed position (CP) for deflecting the respective flexure (230F) when in the closed position (CP).