Receiver and collapsible buttstock for a firearm

A receiver having an integral stock connector component that extends along the receiver; two extension rod/rail apertures formed through the integral stock connector component, wherein each extension rod/rail aperture is formed so as to slidably receive an extension rod/rail extending from a buttstock, such that each extension rod/rail is slidably movable within one of the extension rod/rail apertures; wherein each extension rod/rail comprises a rod channel and two or more rod dimples/detents formed along the rod channel; and a latch that is movable between an engaged position and a disengaged position, wherein when the latch is in the engaged position, a protrusion portion urges latch elements into the rod/rail apertures a distance that seats the latch elements into the rod dimples/detents, and wherein when the latch is in the disengaged position, the protrusion portion allows the latch elements to retract from the rod dimples/detents and into the rod channels.

CROSS-REFERENCE TO RELATED APPLICATIONS

Not Applicable.

Not Applicable.

Not Applicable.

NOTICE OF COPYRIGHTED MATERIAL

The disclosure of this patent document contains material that is subject to copyright protection. The copyright owner has no objection to the reproduction by anyone of the patent document or the patent disclosure, as it appears in the Patent and Trademark Office patent file or records, but otherwise reserves all copyright rights whatsoever. Unless otherwise noted, all trademarks and service marks identified herein are owned by the applicant.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present disclosure relates generally to the field of firearms. More specifically, the present invention relates to a lower receiver for a firearm and an associated collapsible buttstock.

2. Description of Related Art

The AR-15 is based on the AR-10, which was designed by Eugene Stoner, Robert Fremont, and L. James Sullivan of the Fairchild ArmaLite Corporation in 1957. Today, there are numerous variants of the AR-15 that are manufactured by a number of companies. The AR-15 and its various related derivative platforms are used by civilians, law enforcement personnel, and military forces around the world.

Various firearms, such as, for example, the AR-15 or M-4 style firearms utilize a variable position buttstock2that is slidable and lockable at various positions along a buffer tube5. A typical variable position buttstock2can be locked into a collapsed position, as illustrated inFIG. 1, or locked into a fully extended position, as illustrated inFIG. 2.

As further illustrated inFIGS. 3 and 4, the typical buffer tube2includes a capped cylindrical portion having a threaded portion8for installation into a firearm receiver. Typically, an endplate6and a lock ring4are utilized to complete installation of the buffer tube on the receiver. A key protrusion7extends from the cylindrical portion9, typically at the 6 o'clock position. An interior portion of the key protrusion includes a plurality of spaced apart recesses or apertures that interact with a retractable bolt to lock the buttstock2in a desired position relative to the buffer tube5.

Certain retrofit collapsible stock assemblies are available. These assemblies require use of a shortened, proprietary buffer tube and use of a proprietary bolt carrier, which includes a built-in buffer. In order to install these retrofit collapsible stock assemblies, the upper receiver must be attached to the lower receiver and the existing buffer tube and buffer retainer must be removed from the lower receiver. Next, the proprietary bolt carrier must be inserted through the buffer tube attachment aperture. Then, the proprietary bolt carrier, a proprietary buffer spring, and a proprietary stock adapter are appropriately positioned at the rear of the receiver. Once appropriately positioned, the proprietary buffer tube is then affixed to the lower receiver, via the buffer tube attachment aperture, to secure the components to the receiver.

Finally, the stock is attached to the stock adapter.

BRIEF SUMMARY OF THE INVENTION

However, the typical buttstock can be relatively heavy and cumbersome. The known locking mechanisms used to lock the buttstock in a desired position along the buffer tube are awkward and difficult to operate.

As discussed above, the current retrofit collapsible stock designs require the removal of the buffer retainer and retainer spring and require the use of a proprietary bolt carrier. Because of the design of the proprietary bolt carrier, once assembled, the upper receiver of the firearm cannot be separated from the lower receiver of the firearm without removing the entire retrofit collapsible stock assembly. Thus, users are not able to separate components of the firearm, in a typical manner, for inspection or cleaning.

Furthermore, the current retrofit collapsible stock designs require use of a large stock adapter. The lower receiver was never designed for use with such a railed, collapsible stock system. Thus, the separate stock adapter adds unnecessary weight and is weaker than the one piece, monolithic integral stock connector component of the present invention.

Additionally, in variations with buttstock's that are slidably attached, via rails, tubes, or rods, to the firearm receiver, the rails, tubes, or rods typically include cut notches at spaced apart locations along the rails, tubes, or rods for allowing the rails, tubes, or rods (and buttstock) to be locked into a desired position relative to the receiver. These cut notches reduce the strength and rigidity of the rails, tubes, or rods, thereby weakening the rails, tubes, or rods, making them prone to bending.

The disadvantages and shortcomings of the prior art are overcome by the features and elements of the receiver and collapsible buttstock of the present invention. The advantages of the present invention are preferably attained by providing, in a first, exemplary, nonlimiting embodiment, a receiver for a firearm and an associated collapsible buttstock. In various exemplary, nonlimiting embodiments, the receiver includes an integral stock connector component that extends along a portion of the receiver and includes two extension rod/rail apertures formed therethrough. Typically, the integral stock connector component extends beyond the buffer tube attachment aperture of the receiver. However, it should be appreciated that the integral stock connector component of the present invention is not so limited and may only extend to the buffer tube attachment aperture of the receiver.

The extension rod/rail apertures are formed parallel to the longitudinal axis of the receiver. In certain exemplary, nonlimiting embodiments, the extension rod/rail apertures are formed outside exterior wall surfaces of the receiver. In other exemplary, nonlimiting embodiments, the extension rod/rail apertures are formed at least partially within receiving channels formed in the adjacent exterior wall surfaces of the receiver. In still other exemplary, nonlimiting embodiments, the extension rod/rail apertures are formed within the integral stock connector component and within the side walls of the receiver.

The extension rod/rail apertures are formed so as to slidably receive the extension rods/rails that extend from the buttstock.

The buttstock assembly comprises a buttstock, a cheek rest, and two extension rods/rails. The buttstock comprises an elongate portion of material extending from a top end to a bottom end. A recessed channel is formed in the top end of the buttstock.

The cheek rest is formed of a substantially inverted “U” or “V” shaped portion of material. The cheek rest is formed so as to be permanently or releasably attached or coupled to the buttstock proximate the top end. When the cheek rest is attached or coupled to the buttstock, the space provided between the recessed channel and the cheek rest provides an aperture that allows the buffer tube to freely slide therethrough. The cheek rest is also formed so as to be positioned above and at least partially around the buffer tube that extends along a portion of the receiver.

Typical cheek rest for current retrofit collapsible stock designs leave a large gap between the buffer tube in the stock so that a user is not presented with a cheek weld. In contrast, the cheek rest provides a cheek weld for the user, whether the buttstock is in a collapsed or extended position.

The extension rods/rails extend from the buttstock and are positioned so as to be aligned with and slidable within the extension rod/rail apertures of the integral stock connector component. In various exemplary embodiments, the extension rods/rails comprise a solid portion of material. Alternatively, the extension rods/rails comprise a hollow or tubular portion of material.

In various exemplary, nonlimiting embodiments, a rod channel is formed along at least a portion of the extension rod. In various exemplary, nonlimiting embodiments, one or more rod dimples/detents are formed along the rod channel. Typically, a rod dimple/detent is formed at each terminating end of the channel and one or more rod dimples/detents are formed along the channel. Each extension rod/rail is a mirror image of the other, such that the number and position of each rod dimple/detent of each extension rod/rail is aligned. In this manner, each rod dimple/detent represents a lockable position of the buttstock relative to the receiver.

Because the majority of the strength of a rod is in the outer perimeter, by utilizing circular dimples/detents that are cut or pressed into the rod, the rod is more structurally sound than a rod having a large, flat cut across the rod.

By utilizing rod dimples/detents and a rod channel, the strength and integrity of the extension rods/rails is maintained and the problems introduced by cut notches in existing collapsible stocks is circumvented.

A latch assembly, comprising a latch, latch springs, latch elements, and a latch cover, is attached or coupled to the integral stock connector component. Through interaction of the latch elements and the rod dimples/detents, the buttstock assembly can be releasably secured at a desired position relative to the receiver.

In certain exemplary, nonlimiting embodiments, the integral stock connector component includes at least one integral stock connector component that extends along a portion of the receiver such that at least a portion of the extension rod/rail apertures are formed proximate the buffer tube aperture. Alternatively, the integral stock connector component may extend from the receiver such that at least a portion of the extension rod/rail aperture is formed below the buffer tube aperture.

In still other exemplary, nonlimiting embodiments, the integral stock connector component comprises at least one integral stock connector component that is formed so as to extend from an upper receiver.

Accordingly, the presently disclosed invention provides a receiver and collapsible buttstock that allow a user to readily adjust the overall length of the buttstock assembly relative to the receiver, within a determined parameter.

The presently disclosed invention separately provides a receiver and collapsible buttstock that allow a user to readily adjust the overall length of the receiver and collapsible buttstock, using a relatively simple motion that is simplified relative to the current motions necessary to adjust the position of a collapsible buttstock.

The presently disclosed invention separately provides a receiver and collapsible buttstock that utilizes channels and detents that maintain the strength and integrity of the extension rods/rails and the buttstock assembly.

The presently disclosed invention separately provides a receiver and collapsible buttstock that provides increased strength and rigidity when compared to known retrofit collapsible stock designs, particularly those with a “screw-on” stock adapter.

The presently disclosed invention separately provides a receiver and collapsible buttstock that can be easily manipulated by a user.

The presently disclosed invention separately provides a receiver and collapsible buttstock that includes a locking feature with a smooth, ball bearing-type mechanism.

The presently disclosed invention separately provides a receiver and collapsible buttstock that includes a strategically positioned locking mechanism that is ambidextrous and can be operated in a single movement/motion as a user grabs the stock and engages the locking mechanism to unlock and extend the buttstock.

These and other aspects, features, and advantages of the present invention are described in or are apparent from the following detailed description of the exemplary, non-limiting embodiments of the present invention and the accompanying figures. Other aspects and features of embodiments of the present invention will become apparent to those of ordinary skill in the art upon reviewing the following description of specific, exemplary embodiments of the present invention in concert with the figures. While features of the present invention may be discussed relative to certain embodiments and figures, all embodiments of the present invention can include one or more of the features discussed herein. Further, while one or more embodiments may be discussed as having certain advantageous features, one or more of such features may also be used with the various embodiments of the invention discussed herein. In similar fashion, while exemplary embodiments may be discussed below as device, system, or method embodiments, it is to be understood that such exemplary embodiments can be implemented in various devices, systems, and methods of the present invention.

Any benefits, advantages, or solutions to problems that are described herein with regard to specific embodiments are not intended to be construed as a critical, required, or essential feature(s) or element(s) of the present invention or the claims.

DETAILED DESCRIPTION OF THE INVENTION

For simplicity and clarification, the design factors and operating principles of the receiver and collapsible buttstock according to this invention are explained with reference to various exemplary embodiments of a receiver and collapsible buttstock according to this invention. The basic explanation of the design factors and operating principles of the receiver and collapsible buttstock is applicable for the understanding, design, and operation of the receiver and collapsible buttstock of this invention. It should be appreciated that the receiver and collapsible buttstock can be adapted to many applications where a receiver and collapsible buttstock or strap can be used.

As used herein, the word “may” is meant to convey a permissive sense (i.e., meaning “having the potential to”), rather than a mandatory sense (i.e., meaning “must”). Unless stated otherwise, terms such as “first” and “second” are used to arbitrarily distinguish between the elements such terms describe. Thus, these terms are not necessarily intended to indicate temporal or other prioritization of such elements.

The term “coupled”, as used herein, is defined as connected, although not necessarily directly, and not necessarily mechanically. The terms “a” and “an” are defined as one or more unless stated otherwise.

It should also be appreciated that the terms “receiver”, “integral stock connector component”, “collapsible stock”, and “firearm” are used for basic explanation and understanding of the operation of the systems, methods, and apparatuses of this invention. Therefore, the terms “receiver”, “integral stock connector component”, “collapsible stock”, and “firearm” are not to be construed as limiting the systems, methods, and apparatuses of this invention. Thus, for example, the term “receiver” is to be understood to broadly include any upper, lower, or combined receiver for a firearm or other similar handheld or shoulder mounted device or tool.

For simplicity and clarification, the receiver and collapsible buttstock of this invention will be described as being used in conjunction with a firearm, such as an AR-15 or M4 style rifle or carbine. However, it should be appreciated that these are merely exemplary embodiments of the receiver and collapsible buttstock and are not to be construed as limiting this invention. Thus, the receiver and collapsible buttstock of this invention may be utilized in conjunction with any firearm or rifle, such as, for example, an AR-10 style rifle, air rifle, paintball marker, Airsoft rifle, replica rifle, or any other tool, device, or object.

Turning now to the drawing FIGS., as discussed above,FIG. 1-4illustrate various components of known buttstocks and buffer tubes.FIGS. 5-27illustrate certain elements and/or aspects of a first exemplary embodiment of the receiver and collapsible buttstock100, according to this invention. In illustrative, non-limiting embodiment(s) of this invention, as illustrated inFIGS. 5-27, the receiver and collapsible buttstock100comprises a receiver110for a firearm and an associated collapsible buttstock assembly.

As illustrated inFIGS. 5-12 and 20-21, the receiver and collapsible buttstock100is illustrated as including an upper receiver12. It should be appreciated that the upper receiver12can be a typical upper receiver for a firearm. It should also be appreciated that a more detailed explanation of the upper receiver12, the standard features and elements of a receiver that are not related to the present invention, the buffer tube10, instructions regarding how to assemble the upper receiver12, the receiver, and the buffer tube10, and certain other items and/or techniques necessary for the implementation and/or operation of the various exemplary embodiments of the present invention are not provided herein because such elements are commercially available and/or such background information will be known to one of ordinary skill in the art. Therefore, it is believed that the level of description provided herein is sufficient to enable one of ordinary skill in the art to understand and practice the present invention, as described.

As illustrated, the receiver110includes an integral stock connector component115that extends along a portion of the receiver110, below the buffer tube aperture. In certain exemplary, nonlimiting embodiments, the integral stock connector component115extends rearward, beyond the buffer tube attachment aperture of the receiver110. However, it should be appreciated that the integral stock connector component115of the present invention is not so limited and may only extend as far as the buffer tube attachment aperture of the receiver110.

Two extension rod/rail apertures118are formed through the integral stock connector component115, substantially parallel to the longitudinal axis ALRof the receiver110. In certain exemplary, nonlimiting embodiments, the extension rod/rail apertures118are formed outside at least a portion of the exterior wall surfaces112of the receiver110. In other exemplary, nonlimiting embodiments, the extension rod/rail apertures118are formed at least partially within receiving channels formed in the exterior wall surfaces112of the receiver110. In still other exemplary, nonlimiting embodiments, the extension rod/rail apertures118are formed within the integral stock connector component115and within the side walls of the receiver110. Thus, the extension rod/rail apertures118may extend only through the integral stock connector component115, may optionally extend through the integral stock connector component115and a portion of the exterior wall surfaces112of the receiver110, or may optionally extend through the integral stock connector component115and be maintained within the side walls of the receiver110.

The extension rod/rail apertures118are formed so as to slidably receive the extension rods/rails170that extend from the buttstock160. In this manner, the extension rods/rails170are repeatably, slidably movable within the extension rod/rail apertures118.

In certain exemplary, nonlimiting embodiments, as illustrated inFIG. 19, the extension rod/rail apertures118may be at least partially internally lined with a bushing or liner element125, comprising a plastic, self-lubricating plastic, or other material to reduce friction between the interior walls of the extension rod/rail apertures118and the exterior surface of the extension rods/rails170.

Additionally, gasket elements123may optionally be positioned between certain of the elements, such as, for example, between a rear portion of the integral stock connector component115and the latch cover120or as a cap over the latch cover120. The gasket elements123may comprise a plastic, self-lubricating plastic, rubber, silicone, metal, carbon fiber, or other material. It should be appreciated that the material used to form the bushing or liner elements125and/or the gasket element(s)123is a design choice based upon the desired appearance and/or functionality of these elements.

It should also be understood that while the extension rod/rail apertures118(and the extension rods/rails170) are illustrated as having a substantially circular profile, the overall shape and/or profile of the extension rod/rail apertures118and the extension rods/rails170is a design choice based upon the desired characteristics, functionality, and/or appearance of the extension rod/rail apertures118and the extension rods/rails170. For example, the extension rod/rail apertures118and/or the extension rods/rails170may have a substantially circular, square, triangular, rectangular, oblong, “L” shaped, “I” shaped, “C” shaped, “V” shaped, “Z” shaped, “T” shaped, or other profile.

Furthermore, in various exemplary embodiments, the extension rods/rails170may be formed of a solid, hollow, or at least partially hollow portion of material.

Thus, the size and shape of the extension rod/rail apertures118and the extension rods/rails170may be altered, as desired, so long as at least a portion of the extension rods/rails170are able to be slidably movable within the extension rod/rail apertures118.

As illustrated most clearly inFIGS. 22-27, the buttstock assembly comprises a buttstock160, a cheek rest150, and two extension rods/rails170. The buttstock160comprises an elongate portion of material extending from a top end161to a bottom end162. A recessed channel165is formed in the top end of the buttstock160. In certain exemplary embodiments, the recessed channel165forms a semi-circular channel. Alternatively, the recessed channel165may form an alternate shape, primarily as dictated by the outer shape of the buffer tube10.

The cheek rest150is formed of a substantially inverted “U” or “V” shaped portion of material that extends from a first end151to a second end152. The cheek rest150is formed so as to be permanently or releasably attached or coupled to the buttstock160, proximate the first end151of the cheek rest150and the top end161of the buttstock160.

The cheek rest150is formed so as to be positioned above and at least partially around the buffer tube10that extends from the receiver110. It should be appreciated that the overall size and shape of the cheek rest150is a design choice based upon the desired appearance and/or functionality of the cheek rest150. Generally, the cheek rest150is formed so as to provide a surface for a user to position his or her cheek when the buttstock160is positioned against the user's shoulder. Thus, it should be understood that the exterior size and shape of the cheek rest150may be altered to provide a desired cheek weld for a user.

In exemplary embodiments wherein the cheek rest150is releasably attached or coupled to the buttstock160, alternate shapes and sizes of cheek rest150can be provided such that a cheek rest150having a desired shape can be selected by a user.

Because of the arcuate shape of the interior of the cheek rest150, when the cheek rest150is attached or coupled to the buttstock160, the space provided between the recessed channel165and the cheek rest150defines an aperture167, which allows the buffer tube10to freely slide therethrough.

FIGS. 22-25illustrate a more detailed view of the extension rods/rails170. In various exemplary embodiments, the extension rods/rails170are formed of a substantially cylindrical shaped portion of material that extends from a first end171to a second end172. In various exemplary embodiments, the extension rods/rails170comprise a solid portion of material. Alternatively, the extension rods/rails170comprise a hollow or tubular portion of material.

In various exemplary, nonlimiting embodiments, a rod channel175is formed along at least a portion of the extension rod/rail170. In various exemplary, nonlimiting embodiments, two or more rod dimples/detents177are formed along the rod channel175. Typically, a rod dimple/detent177is formed at each terminating end of the rod channel175and one or more rod dimples/detents177are formed along the rod channel175. Each extension rod/rail170is a mirror image of the other, such that the number and position of each rod dimple/detent177of each extension rod/rail170is aligned such that each rod dimple/detent177of a first extension rod/rail170is paired with an aligned rod dimple/detent of a second extension rod/rail170. In this manner, each rod dimple/detent177represents a lockable position of the buttstock160relative to the receiver110.

In certain exemplary, nonlimiting embodiments, each rod dimple/detent177is formed of a semi-spherical recess formed in a portion of the extension rod/rail170. Each rod dimple/detent177may be formed by removing, such as, for example, by machining or cutting, material from the extension rod/rail170. Alternatively, each rod dimple/detent177may be formed by pressing a rod dimple/detent177into the extension rod/rail170. It should be appreciated that the rod channel175may be formed in a manner similar to that of the rod dimples/detents177.

By utilizing rod dimples/detents177and a rod channel175, the strength and integrity of the extension rods/rails170is maintained and the problems introduced by cut notches in existing collapsible stocks is circumvented. Because the majority of the strength of a rod is in the outer perimeter, by utilizing circular dimples/detents that are cut or pressed into the rod, the rod is more structurally sound than a rod having a large, flat cut across the rod.

In still other embodiments, each rod dimple/detent177may optionally be formed of a notch or other shaped recess formed in a portion of the extension rod/rail170.

As illustrated inFIGS. 49A-49F, the extension rods/rails170may take on a number of profiles and still include structures that correspond to the rod channel175and the rod dimples/detents177. For example, as illustrated inFIG. 49A, the extension rods/rails871has a substantially octagonal profile and includes a rod channel875and rod dimples/detents877. As illustrated inFIG. 49B, the extension rods/rails872has a substantially triangular profile and includes a rod channel875and rod dimples/detents877; as illustrated inFIG. 49C, the extension rods/rails873has a substantially rectangular profile and includes a rod channel875and rod dimples/detents877; as illustrated inFIG. 49D, the extension rods/rails874has a substantially “L” shaped profile and includes a rod channel875and rod dimples/detents877; as illustrated inFIG. 49E, the extension rods/rails876has a substantially circular, hollow profile and includes a rod channel875and rod dimples/detents877; and as illustrated inFIG. 49F, the extension rods/rails888has a substantially C-shaped profile and includes a rod channel875and rod dimples/detents877.

By utilizing one or more latch elements140, a smooth, ball bearing-type action is provided to the lock mechanism. This system provides reduced contact surface friction and smoother and easier manipulation of the components, particularly when compared to a square/rectangular notch.

As illustrated, a first extension rod/rail170and a second extension rod/rail170are attached or coupled to the buttstock160so as to extend from the buttstock160. The extension rods/rails170extend from the buttstock160so as to be aligned with and slidable within the extension rod/rail apertures118of the integral stock connector component115.

As illustrated most clearly inFIGS. 17-21, the latch assembly comprises a latch cover120, a latch130, at least one latch element140, and one or more latch biasing elements145. The latch cover120is formed so as to be attached or coupled to the integral stock connector component115. In various exemplary, nonlimiting embodiments, the latch cover120is attached or coupled to the integral stock connector component115via one or more screws190. Alternatively, depending upon the materials used to create the receiver110and the latch cover120, the latch cover120may be adhesively or otherwise permanently or removably attached to the integral stock connector component115.

In still other exemplary, nonlimiting embodiments, the latch cover120may be formed as an integral component of the receiver110.

The latch cover120includes interior side walls defining a latch cover cavity122formed so as to receive at least a portion of the latch130therein. The latch cover cavity122includes not only space for at least a portion of the latch130, but also rod/rail apertures124formed therethrough. The rod/rail apertures124are formed so as to be aligned with the extension rod/rail apertures118and to slidably receive the extension rods/rails170that extend from the buttstock160. In this manner, when the latch cover120is attached or coupled to the integral stock connector component115, the extension rods/rails170are repeatably, slidably movable within the aligned rod/rail apertures124and the extension rod/rail apertures118.

The latch130extends from an engagement portion132to a protrusion portion136. An extension shoulder134is disposed between the engagement portion132and the protrusion portion136. At least a portion of the extension shoulder134extends laterally, away from the longitudinal axis ALLof the latch130, beyond a width of the engagement portion132. At least a portion of the protrusion portion136extends laterally, away from the longitudinal axis ALLof the latch130, beyond a width of the extension shoulder134.

When the latch130is positioned within the latch cover cavity122, the extension shoulder134interacts with side walls of the latch cover cavity122to maintain the latch130within the latch cover cavity122. Thus, while maintained within the latch cover cavity122, at least a portion of the engagement portion132protrudes from the latch cover120and the latch130is movable, along its longitudinal axis ALL. Between an engaged, or locked position, as illustrated inFIG. 20, and a disengaged or unlocked position, as illustrated inFIG. 21.

In various exemplary embodiments, a latch element140is positioned proximate either side of the latch cover cavity122and maintained between the rod/rail apertures124and the protrusion portions136. In various exemplary, nonlimiting embodiments, each latch element140comprises a spherical ball. Alternatively, each of said latch elements140may comprise a cylindrical or other portion of material.

When the latch130is in the disengaged or unlocked position, the protrusion portions136are urged so as to allow the latch elements140to retract further into the latch cover cavity. When the latch130is in the engaged or locked position, the protrusion portions136urge the latch elements140into the rod/rail apertures124.

While the latch assembly is illustrated and described as including latch element(s)140, it should be appreciated that the latch element(s)140may be replaced by one or more protrusion portions, rectangular latches, or the like. Thus, it should be understood that any device, element, or feature able to be at least partially positioned within a rod channel175and/or rod dimples/detent177may be used as or in place of a latch element140.

Additionally, while the receiver and collapsible buttstock100is illustrated as including two latch elements140, it should be appreciated that the locking mechanism of the receiver and collapsible buttstock100may only utilize a single latch element140, positioned proximate a single side of the latch cover cavity122and maintained between a single rod/rail aperture124and protrusion portion136.

For example,FIGS. 44-45illustrate an exemplary receiver and collapsible buttstock500, which includes a receiver510having exterior side walls512and a modified integral stock connector component515and a modified latch cover520. The integral stock connector component515and the modified latch cover520each include only a single rod/rail aperture. Additionally, only a single extension rod/rail170extends from the buttstock560.

One or more biasing element receiving recesses138may optionally be formed within an upper portion of the latch130. The biasing element receiving recess(es)138allow one or more latch biasing elements145to be at least partially positioned therein so as to maintain alignment of the latch biasing elements145between the latch130and the interior of the latch cover cavity122.

In various exemplary embodiments, the biasing elements145comprise a spring. Alternatively, the biasing element(s)145may comprise a single spring or multiple springs, a leaf spring, a resilient portion of material, such as, for example, rubber or silicone, or any other mechanism that can store and return energy in a fashion similar to that of a spring.

In still other exemplary embodiments, as illustrated inFIGS. 47 and 48, the spring biasing element(s)145may optionally be replaced with a spring biasing element645, such as, for example, a bent piece of spring steel or leaf spring. Alternatively, the spring biasing element(s)145may optionally be replaced with a spring biasing element745, such as, for example, a resilient block or portion of material.

In certain of these exemplary embodiments, as illustrated, the one or more biasing element receiving recesses138are removed from the latch130.

The biasing elements145are positioned between the latch130and an interior surface of the latch cover cavity122, so as to bias the latch130to the engaged or locked position, as illustrated inFIG. 20.

The interaction between the latch elements140and the rod/rail apertures124is such that when the latch130is in the disengaged or unlocked position, the latch elements140are retracted so as to travel within the rod channels175of the extension rods/rails170. However, while in the disengaged or unlocked position, the latch130limits the retraction of the latch elements140within the latch cover cavity122such that the latch elements140protrude into the rod/rail apertures124a sufficient distance to be maintained within the rod channel175, thereby limiting the slidable movement of the extension rods/rails170(and the cheek rest150and buttstock160) relative to the receiver110.

In the engaged or locked position, the latch130urges the latch elements140further into the rod/rail apertures124, thereby maintaining each latch element140within a rod dimple/detent177.

Thus, through interaction of the latch elements140and the rod dimples/detents177, the buttstock assembly can be releasably secured at a desired position relative to the receiver110.

In various exemplary embodiments, various components of the receiver and collapsible buttstock100are substantially rigid and are formed of aluminum. Alternate materials of construction of the various components of the receiver and collapsible buttstock100may include one or more of the following: steel, stainless steel, titanium, and/or other metals, as well as various alloys and composites thereof, glass-hardened polymers, polymeric composites, polymer or fiber reinforced metals, carbon fiber or glass fiber composites, continuous fibers in combination with thermoset and thermoplastic resins, chopped glass or carbon fibers used for injection molding compounds, laminate glass or carbon fiber, epoxy laminates, woven glass fiber laminates, impregnate fibers, polyester resins, epoxy resins, phenolic resins, polyimide resins, cyanate resins, high-strength plastics, nylon, glass, or polymer fiber reinforced plastics, thermoform and/or thermoset materials, and/or various combinations of the foregoing. Thus, it should be understood that the material or materials used to form the various components of the receiver and collapsible buttstock100is a design choice based on the desired appearance and functionality of the receiver and collapsible buttstock100.

It should be appreciated that certain elements of the receiver and collapsible buttstock100may be formed as an integral unit (such as, for example, the buttstock160and the extension rods/rails170). Alternatively, suitable materials can be used and sections or elements made independently and attached or coupled together, such as by adhesives, welding, screws, rivets, pins, or other fasteners, to form the various elements of the receiver and collapsible buttstock100.

It should also be understood that the overall size and shape of the receiver and collapsible buttstock100, and the various portions thereof, is a design choice based upon the desired functionality and/or appearance of the receiver and collapsible buttstock100.

During use, the buttstock assembly may initially be presented in a retracted or collapsed position, as illustrated inFIG. 9. In this position, the latch130is in the engaged or locked position and the latch elements140are positioned within the rod dimples/detents177formed at a first terminal end178of the rod channel175. The interaction of the protrusion portions136, the latch elements140, and the rod dimples/detents177is sufficient to maintain the buttstock assembly in the collapsed or retracted position even if a withdrawing force is applied to the buttstock assembly.

When a user desires to extend the buttstock assembly, the user merely urges the latch130upward, along the longitudinal axis ALL, to the disengaged or unlocked position. Because of the convenient position of the engagement portion132of the latch130, intentional manipulation of the latch130can be accomplished easily, with the user's finger, thumb, or another surface.

As the latch130is urged toward the disengaged or unlocked position, the protrusion portions136allow the latch elements140to retract into the latch cover cavity122a sufficient distance so as to be removed from the rod dimples/detents177but maintained within the rod channel175. Thus, the extension rods/rails170can be slidably withdrawn from the rod/rail apertures124and the extension rail apertures118, a distance permitted by the length of the rod channel175and the rod dimple/detent positioned at the second terminal end179of the rod channel175.

In certain exemplary, nonlimiting embodiments, the distance from the first terminal end178of the rod channel175to the second terminal end179of the rod channel175is approximately 3 inches. Alternatively, the distance from the terminal ends may be greater or less than 3 inches and may be, for example, 2-10 inches or more.

When the user no longer urges the latch130to the unlocked or disengaged position, the spring bias of the latch biasing elements145urges the latch130toward the engaged or locked position, such that the latch elements140may continue to allow slidable movement of the extension rods/rails170until the latch elements140reach a rod dimple/detent177. Upon reaching a rod dimple/detent177, the spring biasing force of the latch biasing elements145urges the latch elements140into the rod dimples/detents177, thereby locking the buttstock assembly into a given position relative to the receiver110.

FIGS. 28-29illustrate a second exemplary embodiment of a receiver and collapsible buttstock200being assembled together with an upper receiver12and buffer tube10.FIG. 28illustrates the buttstock assembly in a fully collapsed position, whileFIG. 29illustrates the buttstock assembly in a fully extended position.

As shown inFIGS. 28-29, the receiver and collapsible buttstock200comprises elements similar to those of the receiver and collapsible buttstock100. However, as shown inFIGS. 28-29, the receiver100is replaced by the receiver210. Receiver210includes an integral stock connector component215that extends rearward, as far as the buffer tube attachment aperture of the receiver210. Thus, the integral stock connector component215does not extend as far rearward as the integral stock connector component115.

Additionally, the integral stock connector component215extends along a greater portion of the receiver210(and the exterior wall surfaces212of the receiver210) than the integral stock connector component115extends along the receiver110.

FIGS. 30-31illustrate a third exemplary embodiment of a receiver and collapsible buttstock300being assembled together with an upper receiver12and buffer tube10.

As shown inFIGS. 30-31, the receiver and collapsible buttstock300comprises elements similar to those of the receiver and collapsible buttstock100and/or200. However, as shown inFIGS. 30-31, the receiver100and/or200is replaced by receiver310. The receiver310includes an integral stock connector component315that is formed higher up on the receiver310when compared to the location of the integral stock connector components115and215.

The integral stock connector component315is positioned such that the extension rod/rail apertures318are formed outside at least a portion of the exterior wall surfaces312of the receiver310, along either side of the buffer tube aperture. Thus, when assembled, the extension rods/rails170are located substantially alongside and coplanar to the buffer tube10.

In this manner, the extension rods/rails170are aligned along either side of the bore axis of the receiver, causing the majority of recoil experienced during firing of the rifle to be directed in a substantially straight line back from the receiver, through the extension rods/rails170, to the buttstock160. By directing the recoil straight back, along the bore axis and along substantially coplanar components, the amount of muscle rise experienced during firing is reduced, when compared to conventional collapsible stock assemblies.

As illustrated most clearly inFIG. 30, the forward assist that is typically included on an upper receiver12is removed so as to allow the extension rod/rail170, located on the right side of the receiver12to move along the right side of the receiver12. In certain exemplary, nonlimiting embodiments, a recess is formed in the shell deflector of the upper receiver12to act as an additional stop for the extension rod/rail170located on the right side of the receiver12.

FIGS. 32-44illustrate various views of a view of an exemplary embodiment of a receiver and collapsible buttstock400and an upper receiver480, according to this invention. As shown inFIGS. 32-44, the receiver and collapsible buttstock400comprises at least some of a lower receiver410, an upper receiver480, a buffer tube10, extension rod/rails470, and a buttstock460.

It should be understood that the buffer tube10, the extension rod/rails470, and the buttstock460correspond generally to and operates similarly to the buffer tube10, the extension rod/rails170, and the buttstock160, as described above with reference to the receiver and collapsible buttstock100ofFIGS. 5-27.

However, as shown inFIGS. 32-44, the lower receiver410can be a typical for a firearm, known lower receiver. It should be appreciated that a more detailed explanation of the lower receiver410, the standard features and elements of a lower receiver that are not related to the present invention, the buffer tube10, instructions regarding how to assemble the upper receiver480, the lower receiver410, and the buffer tube10, and certain other items and/or techniques necessary for the implementation and/or operation of the various exemplary embodiments of the present invention are not provided herein because such elements are commercially available and/or such background information will be known to one of ordinary skill in the art. Therefore, it is believed that the level of description provided herein is sufficient to enable one of ordinary skill in the art to understand and practice the present invention, as described.

As illustrated, the upper receiver480includes an integral stock connector component415that extends along a portion of the upper receiver480, proximate either side of the buffer tube aperture. In certain exemplary, nonlimiting embodiments, the integral stock connector component415extends along the side walls of the upper receiver480. Depending on the length of the stock connector component415formed on the right side of the upper receiver480, the integral stock connector component415may replace the forward assist and/or the shell deflector of the right side of the upper receiver480.

Two extension rod/rail apertures488are formed through the integral stock connector component415, substantially parallel to the longitudinal axis ALRof the upper receiver480. In certain exemplary, nonlimiting embodiments, the extension rod/rail apertures488are formed outside at least a portion of the exterior wall surfaces487of the upper receiver480. In other exemplary, nonlimiting embodiments, the extension rod/rail apertures488may be formed at least partially within receiving channels formed in the exterior wall surfaces487of the upper receiver480. In still other exemplary, nonlimiting embodiments, the extension rod/rail apertures488are formed within the integral stock connector component415and within the side walls of the upper receiver480. Thus, the extension rod/rail apertures488may extend only through the integral stock connector component415, may optionally extend through the integral stock connector component415and a portion of the exterior wall surfaces487of the upper receiver480, or may optionally extend through the integral stock connector component415and be maintained within the side walls of the upper receiver480.

The extension rod/rail apertures488are formed so as to slidably receive the extension rods/rails470that extend from the buttstock460. In this manner, the extension rods/rails470are repeatably, slidably movable within the extension rod/rail apertures488.

In certain exemplary, nonlimiting embodiments, the extension rod/rail apertures488may be at least partially internally lined with a bushing or liner element, comprising a plastic, self-lubricating plastic, or other material to reduce friction between the interior walls of the extension rod/rail apertures488and the exterior surface of the extension rods/rails470.

It should also be understood that while the extension rod/rail apertures488(and the extension rods/rails470) are illustrated as having a substantially circular profile, the overall shape and/or profile of the extension rod/rail apertures488and the extension rods/rails470is a design choice based upon the desired characteristics, functionality, and/or appearance of the extension rod/rail apertures488and the extension rods/rails470. For example, the extension rod/rail apertures488and/or the extension rods/rails470may have a substantially circular, square, triangular, rectangular, oblong, “L” shaped, “I” shaped, “C” shaped, “V” shaped, “Z” shaped, “T” shaped, or other profile.

Furthermore, in various exemplary embodiments, the extension rods/rails470may be formed of a solid, hollow, or at least partially hollow portion of material.

Thus, the size and shape of the extension rod/rail apertures488and the extension rods/rails470may be altered, as desired, so long as at least a portion of the extension rods/rails470are able to be slidably movable within the extension rod/rail apertures488.

As illustrated most clearly inFIGS. 39-42, the buttstock assembly comprises a buttstock460and two extension rods/rails470. The buttstock460comprises an elongate portion of material extending from a top end461to a bottom end462. A recessed channel465is formed in the top end of the buttstock460. In certain exemplary embodiments, the recessed channel465forms an arcuate or semi-circular channel. Alternatively, the recessed channel465may form an alternate shape, primarily as dictated by the outer shape of the buffer tube10.

Because of the arcuate or semi-circular shape of the recessed channel465, the space provided within the recessed channel465defines an area within the buttstock460, which allows the buffer tube10to freely slide therethrough.

In certain exemplary, nonlimiting embodiments, a cheek rest (not illustrated) may be permanently or releasably attached or coupled to the buttstock460.

In various exemplary embodiments, the extension rods/rails470are formed of a substantially cylindrical shaped portion of material that extends from a first end to a second end. In various exemplary embodiments, the extension rods/rails470comprise a solid portion of material. Alternatively, the extension rods/rails470comprise a hollow or tubular portion of material.

In various exemplary, nonlimiting embodiments, two or more rod dimples/detents are formed along the rod channel. The rod channel and rod dimples/detents correspond to and operate similarly to the rod channel175and the rod dimples/detents177, as described above with respect to the receiver and collapsible buttstock100.

As illustrated, a first extension rod/rail470and a second extension rod/rail470are attached or coupled to the buttstock460so as to extend from the buttstock460. The extension rods/rails470extend from the buttstock460so as to be aligned with and slidable within the extension rod/rail apertures488of the integral stock connector component415.

The integral stock connector component415is positioned such that the extension rod/rail apertures418are formed outside at least a portion of the exterior wall surfaces412of the receiver410, along either side of the buffer tube aperture. Thus, when assembled, the extension rods/rails170are located substantially alongside and coplanar to the buffer tube10.

In this manner, the extension rods/rails170are aligned along either side of the bore axis of the receiver, causing the majority of recoil experienced during firing of the rifle to be directed in a substantially straight line back from the receiver, through the extension rod/rails170, to the buttstock160. By directing the recoil straight back, along the bore axis and along substantially coplanar components, the amount of muscle rise experienced during firing is reduced, when compared to conventional collapsible stock assemblies.

As illustrated most clearly inFIGS. 33, 35, 40, 41, and 44, the latch assembly comprises a latch430pivotably attached or coupled, via a pivot pin435, within a latch cavity482. The latch430comprises a finger button end and an engagement end and is pivotable, via the pivot pin435, between an engaged and a disengaged position. Typically, the finger button end is divided from the engagement end proximate the pivot point.

The latch cavity482provides a recessed area for the latch430. An aperture483is provided proximate the engagement end of the latch cavity482, which provides access between the latch cavity482and the interior of the extension rod/rail aperture488below the latch cavity482.

The latch430is typically spring biased, via a biasing element, to the engaged position. In the engaged position, a protrusion from the latch430protrudes through the latch cavity482and into the extension rod/rail aperture488a sufficient distance to engage and be at least partially positioned within a rod channel475and/or rod dimples/detent477.

When the latch430is pivoted to the disengaged or unlocked position, via urging of the finger button end, the protrusion is withdrawn a sufficient distance from the extension rod/rail aperture488to disengage from the rod dimples/detent477, but continue to be maintained within the rod channel475.

Thus, through interaction of the protrusion of the latch430and the rod dimples/detents477, the buttstock assembly can be releasably secured at a desired position relative to the upper receiver480.

While the receiver and collapsible buttstock400is illustrated as including a single latch430maintained within a latch cavity482formed on the right side of the upper receiver480, it should be appreciated that an additional latch430may be included within a latch cavity482formed on the left side of the upper receiver480.

In various exemplary embodiments, various components of the receiver and collapsible buttstock400are substantially rigid and are formed of aluminum. Alternate materials of construction of the various components of the receiver and collapsible buttstock400may include one or more of the following: steel, stainless steel, titanium, and/or other metals, as well as various alloys and composites thereof, glass-hardened polymers, polymeric composites, polymer or fiber reinforced metals, carbon fiber or glass fiber composites, continuous fibers in combination with thermoset and thermoplastic resins, chopped glass or carbon fibers used for injection molding compounds, laminate glass or carbon fiber, epoxy laminates, woven glass fiber laminates, impregnate fibers, polyester resins, epoxy resins, phenolic resins, polyimide resins, cyanate resins, high-strength plastics, nylon, glass, or polymer fiber reinforced plastics, thermoform and/or thermoset materials, and/or various combinations of the foregoing. Thus, it should be understood that the material or materials used to form the various components of the receiver and collapsible buttstock400is a design choice based on the desired appearance and functionality of the receiver and collapsible buttstock400.

It should be appreciated that certain elements of the receiver and collapsible buttstock400may be formed as an integral unit (such as, for example, the buttstock460and the extension rods/rails470). Alternatively, suitable materials can be used and sections or elements made independently and attached or coupled together, such as by adhesives, welding, screws, rivets, pins, or other fasteners, to form the various elements of the receiver and collapsible buttstock400.

It should also be understood that the overall size and shape of the receiver and collapsible buttstock400, and the various portions thereof, is a design choice based upon the desired functionality and/or appearance of the receiver and collapsible buttstock400.

While the receiver and collapsible buttstock400is illustrated and described as having two extension rods/rails470engaging two extension rod/rail apertures488, it should be appreciated that the receiver and collapsible buttstock400may include a single extension rod/rail470engaging a single extension rod/rail aperture488.

During use, the buttstock assembly may initially be presented in a retracted or collapsed position, as illustrated inFIGS. 39-44. In this position, the latch430is in the engaged or locked position and the protrusion portion of the latch430is positioned within the rod dimples/detents formed at a first terminal end478of the rod channel475. The interaction of the protrusion portion protrusion portion of the latch430, and the rod dimples/detents is sufficient to maintain the buttstock assembly in the collapsed or retracted position even if a withdrawing force is applied to the buttstock assembly.

When a user desires to extend the buttstock assembly, the user merely engages the finger button portion of the latch430and urges the finger button portion inward, to the disengaged or unlocked position. Because the latch430is at least partially positioned within the latch cavity482, unintentional manipulation of the latch430can be avoided.

As the latch430is pivotably urged toward the disengaged or unlocked position, the protrusion portion of the latch430is withdrawn from the extension rods/rail aperture488a sufficient distance so as to be removed from the rod dimples/detents but maintained within the rod channel475. Thus, the extension rods/rails470can be slidably withdrawn from the extension rail apertures488, a distance permitted by the length of the rod channel and the rod dimple/detent positioned at the second terminal end479of the rod channel475.

In certain exemplary, nonlimiting embodiments, the distance from the first terminal end478of the rod channel to the second terminal end479of the rod channel is approximately 3 inches. Alternatively, the distance from the terminal ends may be greater or less than 3 inches and may be, for example, 2-10 inches or more.

When the user no longer urges the latch430to the unlocked or disengaged position, the spring bias of the latch biasing elements urges the latch430toward the engaged or locked position, such that the protrusion portion of the latch430may continue to allow slidable movement of the extension rods/rails470until the protrusion portion of the latch430reaches a rod dimple/detent477. Upon reaching a rod dimple/detent477, the spring biasing force of the latch biasing element urges the protrusion portion of the latch430into the rod dimples/detents477, thereby locking the buttstock assembly into a given position relative to the upper receiver480.

While this invention has been described in conjunction with the exemplary embodiments outlined above, the foregoing description of exemplary embodiments of the invention, as set forth above, are intended to be illustrative, not limiting and the fundamental invention should not be considered to be necessarily so constrained. It is evident that the invention is not limited to the particular variation set forth and many alternatives, adaptations modifications, and/or variations will be apparent to those skilled in the art.

It is to be understood that the phraseology of terminology employed herein is for the purpose of description and not of limitation. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

In addition, it is contemplated that any optional feature of the inventive variations described herein may be set forth and claimed independently, or in combination with any one or more of the features described herein.

Accordingly, the foregoing description of exemplary embodiments will reveal the general nature of the invention, such that others may, by applying current knowledge, change, vary, modify, and/or adapt these exemplary, non-limiting embodiments for various applications without departing from the spirit and scope of the invention and elements or methods similar or equivalent to those described herein can be used in practicing the present invention. Any and all such changes, variations, modifications, and/or adaptations should and are intended to be comprehended within the meaning and range of equivalents of the disclosed exemplary embodiments and may be substituted without departing from the true spirit and scope of the invention.

Also, it is noted that as used herein and in the appended claims, the singular forms “a”, “and”, “said”, and “the” include plural referents unless the context clearly dictates otherwise. Conversely, it is contemplated that the claims may be so-drafted to require singular elements or exclude any optional element indicated to be so here in the text or drawings. This statement is intended to serve as antecedent basis for use of such exclusive terminology as “solely”, “only”, and the like in connection with the recitation of claim elements or the use of a “negative” claim limitation(s).