# Patent

## Title
Flexible electrical connector insert with conductive and non-conductive elastomers

## Abstract

A connector insert comprising conductive wire and a plurality of layers of conductive and non-conductive elastomers, and methods of fabrication thereof.

## Background
CROSS-REFERENCE TO RELATED APPLICATIONS
This application is a continuation-in-part application of U.S. patent application Ser. No. 14/529,864, entitled “Flexible Electrical Connector Insert With Conductive and Non-Conductive Elastomers”, filed on Oct. 31, 2014, now U.S. Pat. No. 9,478,887, which claims priority to U.S. Provisional Patent Application Ser. No. 61/898,927, entitled “Very Low Inductance Design for Electrical Connector Insert”, filed on Nov. 1, 2013, and the specifications and claims thereof are incorporated herein by reference.


STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
Not Applicable.
INCORPORATION BY REFERENCE OF MATERIAL SUBMITTED ON A COMPACT DISC
Not Applicable.
COPYRIGHTED MATERIAL
Not Applicable.
BACKGROUND OF THE INVENTION
Field of the Invention (Technical Field)
The present invention relates to inserts installed into an existing or new electrical connector to reliably add electrical circuitry to the system and concomitant methods of use and fabrication.
Description of Related Art
The present invention primarily relates to an insert installed into an existing or new electrical connector to reliably add electrical circuitry to the system. Current technology in this field uses either standard circuit board technology or EESeal® silicone inserts. The circuit board technology corrupts the existing environmental seal of the connector, and so is unsuitable for high-reliability connectors. The EESeal technology is made primarily from silicone elastomer, and so does not corrupt the existing seal. However, the filament wire interconnects within the insert introduce unwanted stray inductance and are labor intensive to construct. The additional stray inductance limits EESeal effectiveness at frequencies above 100 MHz. Both technologies incorporate discrete surface mount devices, primarily capacitors, whose stray inductance is typically a minimum of 0.5 nH, The stray inductance of the surface mount devices also limits high frequency performance.
BRIEF SUMMARY OF THE INVENTION
The present invention relates to a connector insert comprising one or more layers of conductive elastomer. Preferably, the layers have a volume resistivity less than about 0.010 ohms/cm. The insert can be placeable into an existing connector. The layers have holes for pins of the connector, and provide at least a connector shell contact, a ground plane, and a pin contact. The connector insert can additionally comprise a capacitor, preferably comprising a plurality of layers of conductive elastomer, with separation provided by at least one layer of non-conductive material, and most preferably wherein the at least one layer of non-conductive material comprises non-conductive elastomer. The insert may additionally comprise one or more other electrical components such as resistors, Metal Oxide Varistors (MOVs), diodes, fuses, antifuses, shorting blocks, inductors, active electrical components, and any combination thereof, and one or more electrical components may comprise elastomer. The insert may additionally comprise wire for electrical connections.
The invention is additionally of a concomitant method of employing a connector insert, the method comprising the steps of: fabricating one or more layers of conductive elastomer as an insert, and placing the insert into a connector. The layers preferably have a volume resistivity less than about 0.010 ohms/cm. The connector may be an existing connector. Holes are formed in the insert for the pins of the connector, and the insert provides at least a connector shell contact, a ground plane, and a pin contact for the connector. A capacitor may be formed in the insert, preferably wherein the capacitor comprises a plurality of layers of conductive elastomer, with separation provided by at least one layer of non-conductive material, and most preferably wherein the at least one layer of non-conductive material comprises non-conductive elastomer. One or more electrical components may be formed in the insert, and one or more of the electrical components may comprise elastomer.
The invention is further of a capacitor for a connector insert, the capacitor comprising a plurality of layers of elastomer, with separation provided by at least one layer of non-conductive material.
Further scope of applicability of the present invention will be set forth in part in the detailed description to follow, taken in conjunction with the accompanying drawings, and in part will become apparent to those skilled in the art upon examination of the following, or may be learned by practice of the invention. The objects and advantages of the invention may be realized and attained by means of the instrumentalities and combinations particularly pointed out in the appended claims.



BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
The accompanying drawings, which are incorporated into and form a part of the specification, illustrate one or more embodiments of the present invention and, together with the description, serve to explain the principles of the invention. The drawings are only for the purpose of illustrating one or more preferred embodiments of the invention and are not to be construed as limiting the invention. In the drawings:
FIG. 1 is a schematic diagram with cut-through views and a cross sectional view of a discrete component connector insert with planar conductive elastomer construction according to the invention;
FIG. 2 is a schematic diagram of a conductive elastomer capacitor according to the invention;
FIG. 3 is a schematic diagram with cut-through views and a cross sectional view of a conductive elastomer capacitor integrated into a connector insert according to the invention;
FIG. 4 is a schematic diagram with a cut-through view and a cross sectional view of a conductive elastomer “perimeter” capacitor integrated into a connector insert according to the invention;
FIG. 5 is a schematic diagram of a discrete component connector insert according to the invention with planar conductive elastomer construction integrated into an existing connector assembly shown in phantom lines;
FIG. 6 is a schematic diagram of an insert according to the invention placed into an existing connector (retrofit) shown in phantom lines;
FIG. 7 is a schematic diagram with a cut-through view and a cross sectional view of a discrete component connector insert with planar conductive elastomer construction according to the invention illustrating variations on the use of electrical components;
FIG. 8 is a schematic diagram with cut-through views and a cross sectional view of a conductive elastomer capacitor integrated into a connector insert according to the invention illustrating variations on the use of electrical components;
FIG. 9 is a schematic diagram with cut-through views and a cross sectional view of a conductive elastomer “perimeter” capacitor integrated into a connector insert according to the invention illustrating variations on the use of electrical components;
FIG. 10 is a schematic diagram with a cut-through view of a discrete component connector insert with planar conductive and non-conductive elastomer and wire construction and a continuous conductive elastomer shell contact according to the invention illustrating variations on the use of electrical components;
FIG. 11 is a schematic diagram with a cut-through view of a discrete component connector insert with planar conductive and non-conductive elastomer and wire construction and segmented conductive elastomer shell contact according to the invention illustrating variations on the use of electrical components; and
FIG. 12 is a schematic diagram with a cut-through view of a discrete component connector insert with planar conductive and non-conductive elastomer and wire construction and wire shell contacts according to the invention illustrating variations on the use of electrical components.



DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention employ planar conductive layers within a connector insert, which provides a number of advantages. The conductive layers can be conductive elastomer or other conductive element(s) such as a thin metal sheet, but the preferred construct is conductive silicone elastomer, with a volume resistivity preferably less than about 0.010 ohms/cm. Electrically opposing conductive layers are insulated from each other by the non-conductive elastomer. An electrical component, such as a 0402 Surface Mount Device (SMD) sized capacitor, transient voltage suppressor, or resistor, is connected between the two conductive layers. This planar arrangement of the conductors greatly reduces unwanted stray inductance. Further, a small capacitor can be formed by overlapping the opposing conductors and separating them with a thin layer of non-conductive elastomer, or other non-conductive material with high dielectric constant, such as polypropylene. A relative permittivity greater than two is preferred for any of these non-conductive layers. The planar construction of this integrated capacitor, and the elimination of a discrete capacitor, yields ultra-low stray inductance, providing effective filtering well into the GHz frequencies. An insert can employ a discrete device and/or an integral capacitor to achieve a parallel configuration, with the discrete device providing filtering at lower frequencies and the integral capacitor taking over at higher frequencies.
In addition to being installed at the mating interface of a connector pair in a retrofit manner, this assembly can be built into a single connector half, creating a filtered connector. Two capacitive inserts, separated by an inductive element, can be built into a connector, thereby creating a Pi filter, A “T” or “L” type filter can be similarly configured.
This type of electronic circuit construction, utilizing flexible conductive elastomer interconnections between circuit elements and external electrical contacts, has application in fields other than electrical connectors, such as medical and consumer electronics where the circuitry is required to be compressed or flexed.
Turning to the figures, FIG. 1 shows one possible construction of a discrete component connector insert 10 with planar conductive elastomer layers, comprising conductive elastomer shell contact 12, conductive elastomer ground plane 14, electrical components 16, conductive elastomer pin contact 18, non-conductive elastomer 20, and pin holes 22. In this embodiment, electrical components 16 comprise discrete capacitors. This insert would typically be installed over the pins of a high reliability circular connector to provide EMI filtering. In other embodiments, electrical components 16 may comprise resistors, MOVs, diodes, fuses, antifuses, shorting blocks, inductors, active electrical components, and any combination thereof.
Pin-to-shell discrete component 42 is shown wherein contact to at least one pin of the existing connector is made using a layer of conductive elastomer 18 with a hole 22 therein. The diameter of the hole 22 is preferably smaller than the diameter of the pin of the existing connector, so that when the pin is inserted into hole 22, the conductive elastomer stretches to accommodate the pin. This stretching of the conductive elastomer results in a tight fit around the pin, and electrical contact from the pin to the conductive elastomer is thereby achieved. One end of an electrical component 16, e.g., a 0402 SMD capacitor, is placed so that it makes contact to the conductive elastomer pin contact 18. The other end of the electrical component 16 makes contact with the planar conductive elastomer ground plane 14. The pin contact and the ground plane are separated from each other with a layer of non-conductive elastomer 20 placed between them. The conductive elastomer shell contact 12 is placed so that it makes contact to the conductive elastomer ground plane 14. Alternatively, the conductive elastomer shell contact 12 is formed as an integral part of the conductive elastomer ground plane 14.
Non-conductive elastomer 20 is used to encapsulate the top and bottom of the connector insert 10. The conductive elastomer shell contact 12 is exposed around the periphery of the insert 10. The outside perimeter of the insert 10 is slightly larger than the inside perimeter of the existing connector shell so that it is compressed when installed, achieving electrical contact with the existing connector shell. The conductive elastomer shell contact 12 may be exposed around the bottom surface periphery of the insert 10, achieving electrical contact with the existing connector shell. The conductive elastomer shell contact 12 may be exposed around the top surface periphery of the insert 10, permitting electrical contact with the existing mating connector shell along the top surface periphery. The resulting planar construction of the insert 10 results in a very low stray inductance, and much better filtering performance, as compared to existing technology.
FIG. 2 shows an example of an integral capacitor 17 created using conductive elastomer and non-conductive elastomer, comprising dielectric non-conductive elastomer 21, conductive elastomer first terminal 24, and conductive elastomer second terminal 26. A capacitor comprises a plurality of conductive plates separated by an insulating material. The value of the capacitor is determined by the overlapping surface area of the plates, the distance between the plates, and the dielectric constant of the insulating material.
By using elastomers for both the conductive and insulating components of a capacitor, the resulting part can change shape through compression, distension, flexure and other external forces while maintaining its electrical performance and mechanical integrity.
This type of capacitor can be created as an integral part of the fabrication of a connector insert (integral capacitor 17) as shown in FIG. 3, comprising conductive elastomer shell contact 12, non-conductive elastomer 20, dielectric non-conductive elastomer 21, pin holes 22, conductive elastomer pin contact plate 28, and conductive elastomer ground plate 30. In this example, the conductive elastomer pin contact plate is positioned below the conductive elastomer ground plate and separated by a thin layer of dielectric non-conductive elastomer. Non-conductive elastomer 20 is used to isolate the conductive elastomer ground plate 30 from the at least one pin of the existing connector. The overlapping area of the two conductive elastomers, thickness of the dielectric non-conductive elastomer layer, and the dielectric constant of the dielectric non-conductive elastomer determine the value of the resulting capacitor. The conductive elastomer shell contact 12 is placed so that it makes contact to the conductive elastomer ground plate 30. Alternatively, the conductive elastomer shell contact 12 is formed as an integral part of the conductive elastomer ground plate 30.
Non-conductive elastomer 20 is used to encapsulate the top and bottom of the connector insert 10. The conductive elastomer shell contact 12 is exposed around the periphery of the insert 10. The outside perimeter of the insert 10 is slightly larger than the inside perimeter of the existing connector shell so that it is compressed when installed, achieving electrical contact with the existing connector shell. The conductive elastomer shell contact 12 may be exposed around the bottom surface periphery of the insert 10, achieving electrical contact with the existing connector shell. The conductive elastomer shell contact 12 may be exposed around the top surface periphery of the insert 10, permitting electrical contact with the existing mating connector shell along the top surface periphery. Since no discrete device is used, the resulting filter is extremely low inductance and provides effective filtering well into the tens of GHZ.
Instead of using overlapping layers, an integral capacitor 17 can also be created using the perimeter of the conductive elastomer pin contact as one plate, the surface of the conductive elastomer ground plane around the pin contact as the other plate, and the gap between these surfaces filled with a dielectric non-conductive elastomer as the dielectric layer as shown in FIG. 4. This embodiment comprises conductive elastomer shell contact 12, conductive elastomer ground plate 30, conductive elastomer pin contact plate 28, dielectric non-conductive elastomer 21, non-conductive elastomer 20, and pin holes 22. The perimeter of the conductive elastomer pin contact plate can be any shape, but the preferred shape is a circle. The surface area of the perimeter of the conductive elastomer pin contact plate, the thickness of the gap filled with the dielectric non-conductive elastomer and the dielectric constant of the dielectric non-conductive elastomer determine the value of the resulting capacitor. The conductive elastomer shell contact 12 is placed so that it makes contact to the conductive elastomer ground plate 30. Alternatively, the conductive elastomer shell contact 12 is formed as an integral part of the conductive elastomer ground plate 30.
Non-conductive elastomer 20 is used to encapsulate the top and bottom of the connector insert 10. The conductive elastomer shell contact 12 is exposed around the periphery of the insert 10. The outside perimeter of the insert 10 is slightly larger than the inside perimeter of the existing connector shell so that it is compressed when installed, achieving electrical contact with the existing connector shell. The conductive elastomer shell contact 12 may be exposed around the bottom surface periphery of the insert 10, achieving electrical contact with the existing connector shell. The conductive elastomer shell contact 12 may be exposed around the top surface periphery of the insert 10, permitting electrical contact with the existing mating connector shell along the top surface periphery. Since no discrete device is used, the resulting filter is extremely low inductance and provides effective filtering well into the tens of GHZ.
With minor dimensional modifications, a connector insert 10 according to the invention can be made an integral part of an existing connector as shown in FIG. 5. This embodiment comprises conductive elastomer ground plane 14, electrical component 16, conductive elastomer pin contact 18, non-conductive elastomer 20, existing connector o-ring 32, existing connector interfacial seal 34, existing connector shell 36, existing connector pins 38, and existing connector insert 40. One example involves placing the embodiment between the existing connector insert and the existing connector interfacial seal. This permits the necessary contact with the existing connector pins and the existing connector shell while preserving the mating and sealing features of a standard existing connector pair. With other modifications to a standard existing connector, the embodiment can be installed elsewhere within the existing connector as well.
FIG. 6 illustrates placement of a connector insert 10 according to the invention into an existing connector, thereby providing a retrofit improvement to the existing connector. Insert 10 is shown comprising outside perimeter 118 as installed over existing connector pins 38 and as oriented with respect to existing connector interfacial seal 34, existing connector O-ring 32, and existing connector shell 36 with a cavity having inside perimeter 120.
FIG. 7 shows another embodiment of a discrete component connector insert 10 with planar conductive elastomer layers, comprising conductive elastomer shell contact 12, conductive elastomer ground plane 14, conductive elastomer pin contact 18, electrical components 16, non-conductive elastomer 20, and pin holes 22.
Pin-to-shell discrete component 42 is shown wherein one end of an electrical component 16, e.g., a 0402 SMD capacitor, is placed so that it makes contact to the conductive elastomer pin contact 18. The other end of the electrical component 16 makes contact with the conductive elastomer ground plane 14. The conductive elastomer pin contact and the conductive elastomer ground plane are separated from each other with a layer of non-conductive elastomer 20 placed between them. The conductive elastomer shell contact 12 is placed so that it makes contact to the conductive elastomer ground plane 14. Alternatively, the conductive elastomer shell contact 12 is formed as an integral part of the conductive elastomer ground plane 14.
Shorted pin 44 is shown wherein at least one pin hole 22 is created in the conductive elastomer ground plane 14 to provide an electrical connection between at least one pin of an existing connector and the existing connector shell. The conductive elastomer shell contact 12 is placed so that it makes contact to the conductive elastomer ground plane 14. Alternatively, the conductive elastomer shell contact 12 is formed as an integral part of the conductive elastomer ground plane 14.
Open pin 46 is shown wherein at least one pin hole 22 is created in non-conductive elastomer 20 to provide electrical isolation between at least one pin of an existing connector and the existing connector shell.
Pin-to-pin short 48 is shown wherein at least two pins holes 22 are created in a continuous conductive elastomer pin contact 18 to provide an electrical connection between at least two pins of the existing connector, Non-conductive elastomer 20 is used to electrically isolate the conductive elastomer pin contact 18 from the conductive elastomer ground plane 14.
Pin-to-pin discrete component 50 is shown wherein non-conductive elastomer 20 is used to electrically isolate two conductive elastomer pin contacts 18 from each other and from the conductive elastomer ground plane 14. One end of an electrical component 16 is placed so that it makes contact to one of the conductive elastomer pin contacts 18. The other end of the electrical component 16 makes contact with the other conductive elastomer pin contact 18.
Non-conductive elastomer 20 is used to encapsulate the top and bottom of the connector insert 10. The conductive elastomer shell contact 12 is exposed around the periphery of the insert 10. The outside perimeter of the insert 10 is slightly larger than the inside perimeter of the existing connector shell so that it is compressed when installed, achieving electrical contact with the existing connector shell. The conductive elastomer shell contact 12 may be exposed around the bottom surface periphery of the insert 10, achieving electrical contact with the existing connector shell. The conductive elastomer shell contact 12 may be exposed around the top surface periphery of the insert 10, permitting electrical contact with the existing mating connector shell along the top surface periphery.
FIG. 8 shows another embodiment of an integral capacitor insert 10 comprising conductive elastomer shell contact 12, non-conductive elastomer 20, dielectric layer 21, conductive elastomer pin contact plate 28, conductive elastomer ground plate 30, pin holes 22, and various uses of electrical components 16.
Pin-to-shell discrete component 42 is shown wherein, in addition to the integral capacitor 17 described in FIG. 3, one end of an electrical component 16, e.g., a 0402 SMD capacitor, is placed so that it makes contact to the conductive elastomer pin contact plate 28. Non-conductive elastomer 20 is used to isolate this end of the electrical component from the conductive elastomer ground plate 30. The other end of the electrical component 16 makes contact with the conductive elastomer ground plate 30. The conductive elastomer pin contact plate and the conductive elastomer ground plate are separated from each other with a layer of dielectric non-conductive elastomer 21 placed between them. The conductive elastomer shell contact 12 is placed so that it makes contact to the conductive elastomer ground plate 30. Alternatively, the conductive elastomer shell contact 12 is formed as an integral part of the conductive elastomer ground plate 30.
Shorted pin 44 is shown wherein at least one pin hole 22 is created in the conductive elastomer ground plate 30 to provide an electrical connection between at least one pin of an existing connector and the existing connector shell. The conductive elastomer shell contact 12 is placed so that it makes contact to the conductive elastomer ground plate 30. Alternatively, the conductive elastomer shell contact 12 is formed as an integral part of the conductive elastomer ground plate 30.
Open pin 46 is shown wherein at least one pin hole 22 is created in non-conductive elastomer 20 to provide electrical isolation between at least one pin of an existing connector and the existing connector shell. Non-conductive elastomer 20 is used to electrically isolate the conductive elastomer ground plate 30 from the at least one pin of the existing connector.
Pin-to-pin short 48 is shown wherein at least two pins holes 22 are created in a continuous conductive elastomer pin contact plate 28 to provide an electrical connection between at least two pins of the existing connector. Non-conductive elastomer 20 is used to electrically isolate the conductive elastomer ground plate 30 from the at least two pins of the existing connector.
Pin-to-pin discrete component 50 is shown wherein, in addition to the integral capacitor 17 described in FIG. 3, non-conductive elastomer 20 is used to electrically isolate two conductive elastomer pin contact plates 28 from each other. One end of an electrical component 16 is placed so that it makes contact to one of the conductive elastomer pin contact plates 28. The other end of the electrical component 16 makes contact with other conductive elastomer pin contact plate 28. Non-conductive elastomer 20 is used to isolate the electrical component from the conductive elastomer ground plate 30.
Non-conductive elastomer 20 is used to encapsulate the top and bottom of the connector insert 10. The conductive elastomer shell contact 12 is exposed around the periphery of the insert 10. The outside perimeter of the insert 10 is slightly larger than the inside perimeter of the existing connector shell so that it is compressed when installed, achieving electrical contact with the existing connector shell. The conductive elastomer shell contact 12 may be exposed around the bottom surface periphery of the insert 10, achieving electrical contact with the existing connector shell. The conductive elastomer shell contact 12 may be exposed around the top surface periphery of the insert 10, permitting electrical contact with the existing mating connector shell along the top surface periphery.
FIG. 9 shows another embodiment of an integral capacitor insert 10 comprising conductive elastomer shell contact 12, non-conductive elastomer 20, dielectric layer 21, conductive elastomer pin contact plate 28, conductive elastomer ground plate 30, pin holes 22, and various uses of electrical components 16.
Pin-to-shell discrete component 42 is shown wherein, in addition to the integral capacitor 17 described in FIG. 4, one end of an electrical component 16, e.g., a 0402 SMD capacitor, is placed so that it makes contact to the conductive elastomer pin contact plate 28. The other end of the electrical component 16 makes contact with the conductive elastomer ground plate 30. The conductive elastomer pin contact plate and the conductive elastomer ground plate are separated from each other with a layer of dielectric non-conductive elastomer 21 placed between them. The conductive elastomer shell contact 12 is placed so that it makes contact to the conductive elastomer ground plate 30. Alternatively, the conductive elastomer shell contact 12 is formed as an integral part of the conductive elastomer ground plate 30.
Shorted pin 44 is shown wherein at least one pin hole 22 is created in the conductive elastomer ground plate 30 to provide an electrical connection between at least one pin of an existing connector and the existing connector shell. The conductive elastomer shell contact 12 is placed so that it makes contact to the conductive elastomer ground plate 30. Alternatively, the conductive elastomer shell contact 12 is formed as an integral part of the conductive elastomer ground plate 30.
Open pin 46 is shown wherein at least one pin hole 22 is created in non-conductive elastomer 20 to provide electrical isolation between at least one pin of an existing connector and the existing connector shell.
Pin-to-pin short 48 is shown wherein at least two pins holes 22 are created in a continuous conductive elastomer pin contact plate 28 to provide an electrical connection between at least two pins of the existing connector, Dielectric non-conductive elastomer 21 is used to electrically isolate the conductive elastomer pin contact plate 28 from the conductive elastomer ground plate 30.
Pin-to-pin discrete component 50 is shown wherein dielectric non-conductive elastomer 21 is used to electrically isolate two conductive elastomer pin contact plates 28 from each other and from the conductive elastomer ground plate 30. One end of an electrical component 16 is placed so that it makes contact to one of the conductive elastomer pin contact plates 28. The other end of the electrical component 16 makes contact with another conductive elastomer pin contact plate 28.
Non-conductive elastomer 20 is used to encapsulate the top and bottom of the connector insert 10. The conductive elastomer shell contact 12 is exposed around the periphery of the insert 10. The outside perimeter of the insert 10 is slightly larger than the inside perimeter of the existing connector shell so that it is compressed when installed, achieving electrical contact with the existing connector shell. The conductive elastomer shell contact 12 may be exposed around the bottom surface periphery of the insert 10, achieving electrical contact with the existing connector shell. The conductive elastomer shell contact 12 may be exposed around the top surface periphery of the insert 10, permitting electrical contact with the existing mating connector shell along the top surface periphery.
FIG. 10 shows another embodiment of a discrete component connector insert 10 with planar conductive elastomer layers and wires, comprising conductive elastomer shell contact 12, shell contact transition wires 112, ground bus wires 114, conductive elastomer pin contact 18, pin contact wires 116, electrical components 16, non-conductive elastomer 20, and pin holes 22.
Shell contact transition wires 112 are formed of any suitable conductor, such as 1 mil to 10 mil diameter copper wire (optionally plated with gold, tin, or silver), or flat wires such as 5 mil×1 mil Au ribbon, gold plated annealed copper wire (3 mil diameter), or preferably gold plated annealed copper ribbon wire (10 mil×2 mil). Ground bus wires 114 are formed of any suitable conductor, such as 1 mil to 10 mil diameter copper wire (optionally plated with gold, tin, or silver), or flat wires such as 5 mil×1 mil Au ribbon, gold plated annealed copper ribbon wire (10 mil×2 mil), or preferably gold plated annealed copper wire (3 mil diameter). Pin contact wires 116 are formed of any suitable conductor, such as 1 mil to 10 mil diameter copper wire (optionally plated with gold, tin, or silver), or flat wires such as 5 mil×1 mil Au ribbon, gold plated annealed copper ribbon wire (10 mil×2 mil), or preferably gold plated annealed copper wire (3 mil diameter).
Pin-to-shell discrete component 42 is shown wherein one end of an electrical component 16, e.g., a 0402 SMD capacitor, is placed so that it makes contact to a conductive elastomer pin contact 18. The other end of the electrical component 16 is attached to the at least one ground bus wire 114. The at least one ground bus wire 114 is attached to one end of the at least one shell contact transition wire 112. The other end of the at least one shell contact transition wire 112 is embedded in the conductive elastomer shell contact 12. Alternatively, the at least one ground bus wire 114 may be embedded in the conductive elastomer shell contact 12 without using the shell contact transition wire 112. Additional shell contact transition wires and ground bus wires may be positioned at various locations around the perimeter of the insert. The conductive elastomer pin contact, the electrical component, and the wires are embedded in a layer of non-conductive elastomer 20.
Another embodiment of a pin-to-shell discrete component 42 is shown wherein at least one pin contact wire 116 is attached to one end of an electrical component 16, e.g., a 0402 SMD capacitor. The other end of the at least one pin contact wire 116 is embedded in a conductive elastomer pin contact 18. The other end of the electrical component 16 is attached to the at least one ground bus wire 114. The at least one ground bus wire 114 is attached to one end of the at least one shell contact transition wire 112. The other end of the at least one shell contact transition wire 112 is embedded in the conductive elastomer shell contact 12. Alternatively, the at least one ground bus wire 114 may be embedded in the conductive elastomer shell contact 12 without using the shell contact transition wire 112. Additional shell contact transition wires and ground bus wires may be positioned at various locations around the perimeter of the insert. The conductive elastomer pin contact, the electrical component, and the wires are embedded in a layer of non-conductive elastomer 20.
Another embodiment of a pin-to-shell discrete component 42 is shown wherein at least one pin contact wire 116 is attached to one end of an electrical component 16, e.g., a 0402 SMD capacitor. The other end of the at least one pin contact wire 116 is formed directly into the pin hole 22. The other end of the electrical component 16 is attached to the at least one ground bus wire 114. The at least one ground bus wire 114 is attached to one end of the at least one shell contact transition wire 112. The other end of the at least one shell contact transition wire 112 is embedded in the conductive elastomer shell contact 12. Alternatively, the at least one ground bus wire 114 may be embedded in the conductive elastomer shell contact 12 without using the shell contact transition wire 112. Additional shell contact transition wires and ground bus wires may be positioned at various locations around the perimeter of the insert. The electrical component and the wires are embedded in a layer of non-conductive elastomer 20.
Shorted pin 44 is shown wherein one end of the at least one pin contact wire 116 is embedded in a conductive elastomer pin contact 18. The other end of the at least one pin contact wire 116 is attached to the at least one ground bus wire 114. The at least one ground bus wire 114 is attached to one end of the at least one shell contact transition wire 112. The other end of the at least one shell contact transition wire 112 is embedded in the conductive elastomer shell contact 12. Alternatively, the at least one ground bus wire 114 may be embedded in the conductive elastomer shell contact 12 without using the shell contact transition wire 112. Additional shell contact transition wires and ground bus wires may be positioned at various locations around the perimeter of the insert. The conductive elastomer pin contact and the wires are embedded in a layer of non-conductive elastomer 20.
Another embodiment of a shorted pin 44 is shown wherein one end of the at least one pin contact wire 116 is formed directly into the pin hole 22. The other end of the at least one pin contact wire 116 is attached to the at least one ground bus wire 114. The at least one ground bus wire 114 is attached to one end of the at least one shell contact transition wire 112. The other end of the at least one shell contact transition wire 112 is embedded in the conductive elastomer shell contact 12. Alternatively, the at least one ground bus wire 114 may be embedded in the conductive elastomer shell contact 12 without using the shell contact transition wire 112. Additional shell contact transition wires and ground bus wires may be positioned at various locations around the perimeter of the insert. The wires are embedded in a layer of non-conductive elastomer 20.
Pin-to-pin discrete component 50 is shown wherein at least one pin contact wire 116 is attached to one end of an electrical component 16, e.g., a 0402 SMD capacitor. The other end of the at least one pin contact wire 116 is embedded in a conductive elastomer pin contact 18. Another at least one pin contact wire 116 is attached to the other end of the electrical component 16, e.g., a 0402 SMD capacitor. The other end of the other at least one pin contact wire 116 is embedded in another conductive elastomer pin contact 18. The conductive elastomer pin contact, the electrical component, and the wires are embedded in a layer of non-conductive elastomer 20.
Another embodiment of a pin-to-pin discrete component 50 is shown wherein at least one pin contact wire 116 is attached to one end of an electrical component 16, e.g., a 0402 SMD capacitor. The other end of the at least one pin contact wire 116 is formed directly into a pin hole 22. Another at least one pin contact wire 116 is attached to the other end of the electrical component 16, e.g., a 0402 SMD capacitor. The other end of the other at least one pin contact wire 116 is formed directly into another pin hole 22. The electrical component and the wires are embedded in a layer of non-conductive elastomer 20.
Non-conductive elastomer 20 is used to encapsulate the top and bottom of the connector insert 10. The conductive elastomer shell contact 12 is exposed around the periphery of the insert 10. The outside perimeter of the insert 10 is slightly larger than the inside perimeter of the existing connector shell so that it is compressed when installed, achieving electrical contact with the existing connector shell. The conductive elastomer shell contact 12 may be exposed around the bottom surface periphery of the insert 10, achieving electrical contact with the existing connector shell. The conductive elastomer shell contact 12 may be exposed around the top surface periphery of the insert 10, permitting electrical contact with the existing mating connector shell along the top surface periphery.
FIG. 11 shows another embodiment of a discrete component connector insert 10 with planar conductive elastomer layers and wires, comprising conductive elastomer shell contacts 12, shell contact transition wires 112, ground bus wires 114, conductive elastomer pin contact 18, pin contact wires 116, electrical components 16, non-conductive elastomer 20, and pin holes 22. Unlike the conductive elastomer shell contact 12 shown in FIG. 10 which comprises the entire perimeter of the insert, each of the conductive elastomer shell contacts 12 shown in FIG. 11 comprise a small segment of the perimeter of the insert.
Shell contact transition wires 112 are formed of any suitable conductor, such as 1 mil to 10 mil diameter copper wire (optionally plated with gold, tin, or silver), or flat wires such as 5 mil×1 mil Au ribbon, gold plated annealed copper wire (3 mil diameter), or preferably gold plated annealed copper ribbon wire (10 mil×2 mil), Ground bus wires 114 are formed of any suitable conductor, such as 1 mil to 10 mil diameter copper wire (optionally plated with gold, tin, or silver), or flat wires such as 5 mil×1 mil Au ribbon, gold plated annealed copper ribbon wire (10 mil×2 mil), or preferably gold plated annealed copper wire (3 mil diameter). Pin contact wires 116 are formed of any suitable conductor, such as 1 mil to 10 mil diameter copper wire (optionally plated with gold, tin, or silver), or flat wires such as 5 mil×1 mil Au ribbon, gold plated annealed copper ribbon wire (10 mil×2 mil), or preferably gold plated annealed copper wire (3 mil diameter).
Pin-to-shell discrete component 42 is shown wherein one end of an electrical component 16, e.g., a 0402 SMD capacitor, is placed so that it makes contact to a conductive elastomer pin contact 18, The other end of the electrical component 16 is attached to the at least one ground bus wire 114. The at least one ground bus wire 114 is attached to one end of the at least one shell contact transition wire 112. The other end of the at least one shell contact transition wire 112 is embedded in the at least one conductive elastomer shell contact 12. Alternatively, the at least one ground bus wire 114 may be embedded in the conductive elastomer shell contact 12 without using the shell contact transition wire 112. Additional conductive elastomer shell contacts, shell contact transition wires and ground bus wires may be positioned at various locations around the perimeter of the insert. The conductive elastomer pin contact, the electrical component, and the wires are embedded in a layer of non-conductive elastomer 20.
Another embodiment of a pin-to-shell discrete component 42 is shown wherein at least one pin contact wire 116 is attached to one end of an electrical component 16, e.g., a 0402 SMD capacitor. The other end of the at least one pin contact wire 116 is embedded in a conductive elastomer pin contact 18. The other end of the electrical component 16 is attached to the at least one ground bus wire 114. The at least one ground bus wire 114 is attached to one end of the at least one shell contact transition wire 112. The other end of the at least one shell contact transition wire 112 is embedded in the at least one conductive elastomer shell contact 12. Alternatively, the at least one ground bus wire 114 may be embedded in the conductive elastomer shell contact 12 without using the shell contact transition wire 112. Additional conductive elastomer shell contacts, shell contact transition wires and ground bus wires may be positioned at various locations around the perimeter of the insert. The conductive elastomer pin contact, the electrical component, and the wires are embedded in a layer of non-conductive elastomer 20.
Another embodiment of a pin-to-shell discrete component 42 is shown wherein at least one pin contact wire 116 is attached to one end of an electrical component 16, e.g., a 0402 SMD capacitor. The other end of the at least one pin contact wire 116 is formed directly into the pin hole 22. The other end of the electrical component 16 is attached to the at least one ground bus wire 114. The at least one ground bus wire 114 is attached to one end of the at least one shell contact transition wire 112. The other end of the at least one shell contact transition wire 112 is embedded in the at least one conductive elastomer shell contact 12. Alternatively, the at least one ground bus wire 114 may be embedded in the conductive elastomer shell contact 12 without using the shell contact transition wire 112. Additional conductive elastomer shell contacts, shell contact transition wires and ground bus wires may be positioned at various locations around the perimeter of the insert. The electrical component and the wires are embedded in a layer of non-conductive elastomer 20.
Shorted pin 44 is shown wherein one end of the at least one pin contact wire 116 is embedded in a conductive elastomer pin contact 18. The other end of the at least one pin contact wire 116 is attached to the at least one ground bus wire 114. The at least one ground bus wire 114 is attached to one end of the at least one shell contact transition wire 112. The other end of the at least one shell contact transition wire 112 is embedded in the at least one conductive elastomer shell contact 12. Alternatively, the at least one ground bus wire 114 may be embedded in the conductive elastomer shell contact 12 without using the shell contact transition wire 112. Additional conductive elastomer shell contacts, shell contact transition wires and ground bus wires may be positioned at various locations around the perimeter of the insert. The conductive elastomer pin contact and the wires are embedded in a layer of non-conductive elastomer 20.
Another embodiment of a shorted pin 44 is shown wherein one end of the at least one pin contact wire 116 is formed directly into the pin hole 22. The other end of the at least one pin contact wire 116 is attached to the at least one ground bus wire 114. The at least one ground bus wire 114 is attached to one end of the at least one shell contact transition wire 112. The other end of the at least one shell contact transition wire 112 is embedded in the at least one conductive elastomer shell contact 12. Alternatively, the at least one ground bus wire 114 may be embedded in the conductive elastomer shell contact 12 without using the shell contact transition wire 112. Additional conductive elastomer shell contacts, shell contact transition wires and ground bus wires may be positioned at various locations around the perimeter of the insert. The wires are embedded in a layer of non-conductive elastomer 20.
Pin-to-pin discrete component 50 is shown wherein at least one pin contact wire 116 is attached to one end of an electrical component 16, e.g., a 0402 SMD capacitor. The other end of the at least one pin contact wire 116 is embedded in a conductive elastomer pin contact 18. Another at least one pin contact wire 116 is attached to the other end of the electrical component 16, e.g., a 0402 SMD capacitor. The other end of the other at least one pin contact wire 116 is embedded in another conductive elastomer pin contact 18. The conductive elastomer pin contact, the electrical component, and the wires are embedded in a layer of non-conductive elastomer 20.
Another embodiment of a pin-to-pin discrete component 50 is shown wherein at least one pin contact wire 116 is attached to one end of an electrical component 16, e.g., a 0402 SMD capacitor. The other end of the at least one pin contact wire 116 is formed directly into a pin hole 22. Another at least one pin contact wire 116 is attached to the other end of the electrical component 16, e.g., a 0402 SMD capacitor. The other end of the other at least one pin contact wire 116 is formed directly into another pin hole 22. The electrical component and the wires are embedded in a layer of non-conductive elastomer 20.
Non-conductive elastomer 20 is used to encapsulate the top and bottom of the connector insert 10. The conductive elastomer shell contacts 12 are exposed around the periphery of the insert 10. The outside perimeter of the insert 10 is slightly larger than the inside perimeter of the existing connector shell so that it is compressed when installed, achieving electrical contact with the existing connector shell. The conductive elastomer shell contacts 12 may be exposed around the bottom surface periphery of the insert 10, achieving electrical contact with the existing connector shell. The conductive elastomer shell contact 12 may be exposed around the top surface periphery of the insert 10, permitting electrical contact with the existing mating connector shell along the top surface periphery.
FIG. 12 shows another embodiment of a discrete component connector insert 10 with planar conductive elastomer layers and wires, comprising shell contact transition wires 112, ground bus wires 114, conductive elastomer pin contact 18, pin contact wires 116, electrical components 16, non-conductive elastomer 20, and pin holes 22.
Shell contact transition wires 112 are formed of any suitable conductor, such as 1 mil to 10 mil diameter copper wire (optionally plated with gold, tin, or silver), or flat wires such as 5 mil×1 mil Au ribbon, gold plated annealed copper wire (3 mil diameter), or preferably gold plated annealed copper ribbon wire (10 mil×2 mil). Ground bus wires 114 are formed of any suitable conductor, such as 1 mil to 10 mil diameter copper wire (optionally plated with gold, tin, or silver), or flat wires such as 5 mil×1 mil Au ribbon, gold plated annealed copper ribbon wire (10 mil×2 mil), or preferably gold plated annealed copper wire (3 mil diameter). Pin contact wires 116 are formed of any suitable conductor, such as 1 mil to 10 mil diameter copper wire (optionally plated with gold, tin, or silver), or flat wires such as 5 mil×1 mil Au ribbon, gold plated annealed copper ribbon wire (10 mil×2 mil), or preferably gold plated annealed copper wire (3 mil diameter).
Pin-to-shell discrete component 42 is shown wherein one end of an electrical component 16, e.g., a 0402 SMD capacitor, is placed so that it makes contact to a conductive elastomer pin contact 18. The other end of the electrical component 16 is attached to the at least one ground bus wire 114. The at least one ground bus wire 114 is attached to one end of the at least one shell contact transition wire 112. The other end of the at least one shell contact transition wire 112 is formed directly to the perimeter of the insert 10. Alternatively, the at least one ground bus wire 114 may be formed directly to the perimeter of the insert 10 without using the shell contact transition wire 112. Additional shell contact transition wires and ground bus wires may be positioned at various locations around the perimeter of the insert. The conductive elastomer pin contact, the electrical component, and the wires are embedded in a layer of non-conductive elastomer 20.
Another embodiment of a pin-to-shell discrete component 42 is shown wherein at least one pin contact wire 116 is attached to one end of an electrical component 16, e.g., a 0402 SMD capacitor. The other end of the at least one pin contact wire 116 is embedded in a conductive elastomer pin contact 18. The other end of the electrical component 16 is attached to the at least one ground bus wire 114. The at least one ground bus wire 114 is attached to one end of the at least one shell contact transition wire 112. The other end of the at least one shell contact transition wire 112 is formed directly to the perimeter of the insert 10. Alternatively, the at least one ground bus wire 114 may be formed directly to the perimeter of the insert 10 without using the shell contact transition wire 112. Additional shell contact transition wires and ground bus wires may be positioned at various locations around the perimeter of the insert. The conductive elastomer pin contact, the electrical component, and the wires are embedded in a layer of non-conductive elastomer 20.
Another embodiment of a pin-to-shell discrete component 42 is shown wherein at least one pin contact wire 116 is attached to one end of an electrical component 16, e.g., a 0402 SMD capacitor. The other end of the at least one pin contact wire 116 is formed directly into the pin hole 22. The other end of the electrical component 16 is attached to the at least one ground bus wire 114. The at least one ground bus wire 114 is attached to one end of the at least one shell contact transition wire 112. The other end of the at least one shell contact transition wire 112 is formed directly to the perimeter of the insert 10. Alternatively, the at least one ground bus wire 114 may be formed directly to the perimeter of the insert 10 without using the shell contact transition wire 112. Additional shell contact transition wires and ground bus wires may be positioned at various locations around the perimeter of the insert. The electrical component and the wires are embedded in a layer of non-conductive elastomer 20.
Shorted pin 44 is shown wherein one end of the at least one pin contact wire 116 is embedded in a conductive elastomer pin contact 18. The other end of the at least one pin contact wire 116 is attached to the at least one ground bus wire 114. The at least one ground bus wire 114 is attached to one end of the at least one shell contact transition wire 112. The other end of the at least one shell contact transition wire 112 is formed directly to the perimeter of the insert 10. Alternatively, the at least one ground bus wire 114 may be formed directly to the perimeter of the insert 10 without using the shell contact transition wire 112. Additional shell contact transition wires and ground bus wires may be positioned at various locations around the perimeter of the insert. The conductive elastomer pin contact and the wires are embedded in a layer of non-conductive elastomer 20.
Another embodiment of a shorted pin 44 is shown wherein one end of the at least one pin contact wire 116 is formed directly into the pin hole 22. The other end of the at least one pin contact wire 116 is attached to the at least one ground bus wire 114. The at least one ground bus wire 114 is attached to one end of the at least one shell contact transition wire 112. The other end of the at least one shell contact transition wire 112 is formed directly to the perimeter of the insert 10. Alternatively, the at least one ground bus wire 114 may be formed directly to the perimeter of the insert 10 without using the shell contact transition wire 112. Additional shell contact transition wires and ground bus wires may be positioned at various locations around the perimeter of the insert. The wires are embedded in a layer of non-conductive elastomer 20.
Pin-to-pin discrete component 50 is shown wherein at least one pin contact wire 116 is attached to one end of an electrical component 16, e.g., a 0402 SMD capacitor. The other end of the at least one pin contact wire 116 is embedded in a conductive elastomer pin contact 18. Another at least one pin contact wire 116 is attached to the other end of the electrical component 16, e.g., a 0402 SMD capacitor. The other end of the other at least one pin contact wire 116 is embedded in another conductive elastomer pin contact 18. The conductive elastomer pin contact, the electrical component, and the wires are embedded in a layer of non-conductive elastomer 20.
Another embodiment of a pin-to-pin discrete component 50 is shown wherein at least one pin contact wire 116 is attached to one end of an electrical component 16, e.g., a 0402 SMD capacitor. The other end of the at least one pin contact wire 116 is formed directly into a pin hole 22. Another at least one pin contact wire 116 is attached to the other end of the electrical component 16, e.g., a 0402 SMD capacitor. The other end of the other at least one pin contact wire 116 is formed directly into another pin hole 22. The electrical component and the wires are embedded in a layer of non-conductive elastomer 20.
Non-conductive elastomer 20 is used to encapsulate the top and bottom of the connector insert 10. The pin contact wires 116 and/or ground bus wires 114 are exposed around the periphery of the insert 10. The outside perimeter of the insert 10 is slightly larger than the inside perimeter of the existing connector shell so that it is compressed when installed, achieving electrical contact with the existing connector shell. The pin contact wires 116 and/or ground bus wires 114 may extend beyond the perimeter of the insert 10 to enhance the electrical contact with the existing connector shell. The pin contact wires 116 and/or ground bus wires 114 may be exposed around the bottom surface periphery of the insert 10, achieving electrical contact with the existing connector shell. The pin contact wires 116 and/or ground bus wires 114 may be exposed around the top surface periphery of the insert 10, permitting electrical contact with the existing mating connector shell along the top surface periphery.
Embodiments of the connector insert of the present invention may comprise any combination of wire or conductive elastomer to make electrical contact with embedded electrical components, the shell, and/or the pin. For example, in some embodiments, wiring is used to create an electrical connection with the shell, the pin, or both, rather than conductive elastomer. Conductive elastomer may be used for shell contacts, pin contacts, or both, but need not always be used to contact the shell or pin. Other examples include no electrical contact to any pin at all.
Note that in the specification and claims, “about” or “approximately” means within twenty percent (20%) of the numerical amount cited.
Although the invention has been described in detail with particular reference to these preferred embodiments, other embodiments can achieve the same results, Variations and modifications of the present invention will be obvious to those skilled in the art and it is intended to cover in the appended claims all such modifications and equivalents. The entire disclosures of all references, applications, patents, and publications cited above are hereby incorporated by reference.

## Claims

1. A flexible electrical connector insert for adding circuitry within a shell and around at least one pin of an existing connector or mating pair of connectors, said connector insert comprising a conductive wire and one or more layers of flexible and compressible conductive and non-conductive elastomers, wherein said wire and said elastomers provide all electrical connections and paths throughout said insert and all electrical insulation and isolation throughout said insert, said wire is embedded in said one or more layers of elastomers, said one or more layers of elastomers comprise an outside perimeter to fit inside an inside perimeter of a cavity of the shell, and said one or more layers of elastomers comprise at least one opening for fitting around the at least one pin.

2. The connector insert of claim 1 placeable at an interface of a mating pair of existing connectors such that an environmental seal is created thereby preventing the passage of dust, fluids, gasses, or other contaminants through the connection.

3. The connector insert of claim 1 placeable internal to an existing connector such that an interface between the existing connector and an existing mating connector is not altered.

4. The connector insert of claim 1 further comprising at least one shell contact to make an electrical connection between embedded electrical components and/or from one or more of said embedded electrical components to the shell.

5. The connector insert of claim 1 further comprising a pin contact to make an electrical connection between embedded electrical components and/or from one or more of said embedded electrical components to the at least one pin.

6. The connector insert of claim 1 wherein at least one layer of said non-conductive elastomer maintains mechanical contact and electrical insulation around the perimeter of the pin.

7. The connector insert of claim 1 additionally comprising a capacitor.

8. The connector insert of claim 7 wherein said capacitor comprises a plurality of layers of conductive elastomer with separation provided by at least one layer of non-conductive material.

9. The connector insert of claim 8 wherein said non-conductive material comprises flexible, non-conductive elastomer.

10. The connector insert of claim 9 wherein said non-conductive elastomer of said capacitor has a dielectric constant greater than 1.

11. The connector insert of claim 10 wherein said non-conductive elastomer of said capacitor has a dielectric constant greater than 10.

12. The connector insert of claim 7 wherein said capacitor comprises a plurality of coplanar segments of conductive elastomer separated by at least one thin strip of non-conductive material.

13. The connector insert of claim 12 wherein said non-conductive material comprises flexible, non-conductive elastomer.

14. The connector insert of claim 13 wherein said non-conductive elastomer of said capacitor has a dielectric constant greater than 1.

15. The connector insert of claim 14 wherein said non-conductive elastomer of said capacitor has a dielectric constant greater than 10.

16. The connector insert of claim 1 additionally comprising one or more electrical components selected from the group consisting of resistors, Metal Oxide Varistors (MOVs), diodes, fuses, antifuses, shorting blocks, inductors, active electrical components, and any combination thereof, embedded within said insert.

17. A flexible electrical connector insert for adding circuitry within a shell and around the at least one pin of an existing connector or mating pair of connectors, said connector insert comprising one or more layers of flexible and compressible conductive and non-conductive elastomers that provide all electrical connections and paths throughout said insert and all electrical insulation and isolation throughout said insert, the one or more layers of conductive and non-conductive elastomer comprising an outside perimeter to fit inside an inside perimeter of a cavity of the shell, and at least one opening for fitting around the at least one pin, wherein electrical components selected from the group consisting of resistors, Metal Oxide Varistors (MOVs), diodes, fuses, antifuses, shorting blocks, inductors, active electrical components, pin-to-shell components, pin-to-pin components, and any combination thereof, are embedded within said insert.