Multi-position stock assembly for stabilizing a stock during adjustment along a buffer tube

• US 9,551,549 B1
• Filed: 02/08/2016
• Issued: 01/24/2017
• Est. Priority Date: 02/08/2016
• Status: Active Grant

• Current Assignee: John R. Chvala
• Original Assignee: John R. Chvala
• Inventors: Chvala, John R.
• Primary Examiner(s): MORGAN, DERRICK R
• Application Number:
  US15/017,709
• Time in Patent Office: 351 Days
• Field of Search: 42/750.3, 42/73
• US Class Current: 1/1
• CPC Class Codes: F41C 23/04 Folding or telescopic stocks or stock parts articulated or collapsible guns F41A11/04
• CPC Class Codes: F41C 23/14 Adjustable stock or stock parts, i.e. adaptable to personal requirements, e.g. length, pitch, cast or drop
• CPC Class Codes: F41C 7/00 Shoulder-fired smallarms, e.g. rifles, carbines, shotguns specially adapted for underwater use F41C9/06

Abstract

An adjustable stock assembly for a firearm includes a buffer tube extending rearwardly from a receiver, and provided with a series of recesses formed in a bottom portion thereof. A stock has a front end mounted for longitudinal axial sliding movement along the buffer tube, and a rear end provided with a butt plate. A lever arrangement is mounted on the stock for slidable movement therewith along the buffer tube to selectively engage and disengage with any one of the recesses formed in the buffer tube. The lever arrangement is positioned between the buffer tube and the stock, and is configured to prevent any movement of the stock relative to the buffer tube other than the longitudinal axial sliding movement of the stock along the buffer tube.

Claims

1. An adjustable stock assembly for a firearm having a receiver, the stock assembly comprising:

a buffer tube extending rearwardly from the receiver, and provided with a series of recesses formed in a bottom member;

a stock having a front end mounted for longitudinal axial sliding movement along the buffer tube, and a rear end provided with a butt plate; and

a lever arrangement is mounted on the stock for slidable movement therewith along the buffer tube to selectively engage and disengage with any of the recesses formed on the buffer tube for locking the stock in various axial positions along the buffer tube,

wherein the lever arrangement is positioned between the buffer tube and the stock, and is configured to prevent any movement of the stock relative to the buffer tube other than the longitudinal axial sliding movement of the stock along the buffer tube;

wherein the lever arrangement includes a lever base formed with a set of resilient members that are continuously engaged against outer surfaces of spaced apart opposing side walls at the front end of the stock; and

wherein the resilient members have top edges which extend up to and contact the tubular body.

2. The adjustable stock assembly of claim 1, wherein the lever arrangement is slidably received and retained in the front end of the stock.

3. The adjustable stock assembly of claim 1, wherein the resilient members are formed as resilient fins extending upwardly from opposing side edges of the lever base.

4. An adjustable stock assembly for a firearm having a receiver, the stock assembly comprising:

a buffer tube extending rearwardly from the receiver, and constructed with a tubular body having a depending bottom member provided with opposing side walls and a channel formed with a series of recesses therein;

a stock having a front end mounted for longitudinal axial sliding movement along the buffer tube, and a rear end provided with a butt plate; and

a lever arrangement mounted on the stock for slidable movement therewith along the buffer tube to selectively engage and disengage with any of the recesses formed in the buffer tube for locking the stock in various axial positions along the buffer tube,

wherein the lever arrangement includes a lever base which is slidably received and retained in the front end of the stock, and formed with a set of opposing resent members that are in continuous frictional engagement with outer surfaces of the opposing side walls of the bottom member of the buffer tube; and

wherein the resilient members have top edges which extend up to and contact the tubular body.

5. The adjustable stock assembly of claim 4, wherein the lever base is configured to prevent any movement of the stock relative to the buffer tube other than longitudinal axial sliding movement of the stock along the buffer tube.

6. The adjustable stock assembly of claim 4, wherein the lever base is slidably received and retained between a pair of spaced apart side walls at the front end of the stock.

7. The adjustable stock assembly of claim 4, wherein the resilient members are defined by a pair of forward spaced apart resilient fins and a pair of rearward spaced apart resilient fins.

8. The adjustable stock assembly of claim 7, wherein the resilient fins extend upwardly from opposing side edges of the lever base.

9. The adjustable stock assembly of claim 8, wherein each of the fins has a curved inner surface.

10. The adjustable stock assembly of claim 4, wherein a bottom surface of the lever base is formed with a depending tubular boss defining a passageway extending completely through the lever base.

11. The adjustable stock assembly of claim 10, wherein the boss receives and retains a spring which surrounds a lower portion of a latch pin mounted for movement within the walls of the passageway.

12. The adjustable stock assembly of claim 11, wherein the latch pin has an upper portion which is joined to the lower portion and which is selectively engagable and disengagable with any one of the recesses formed in the buffer tube.

13. The adjustable stock assembly of claim 4, wherein a rearward end of the lever base is formed with a projection which is received and retained in a recess formed in the stock.

14. The adjustable stock assembly of claim 11, wherein the bottom surface of the lever base includes a guide member located rearwardly of the tubular boss.

15. The adjustable stock assembly of claim 14, wherein the lever arrangement includes a lever connected to the latch pin and having a recess for receiving the tubular boss and the lower portion of the latch pin such that the lever will pivot relative to the lever base.

16. The adjustable stock assembly of claim 15, wherein the lever includes a channel defined by walls which are configured to receive the guide member.

17. The adjustable stock assembly of claim 15, wherein the lever base has an upper end which contacts the tubular body of the buffer tube and a lower end on which the lever pivots.

18. An adjustable stock assembly for a firearm having a receiver, the stock assembly comprising:

a buffer tube extending rearwardly from the receiver, and constructed with a tubular body having a depending bottom member provided with opposing side walls and a channel with a series of recesses formed therein;

a stock having a front end mounted for longitudinal axial sliding movement along the buffer tube, and a rear end provided with a butt plate; and

a lever arrangement mounted on the stock for slidable movement therewith along the buffer tube to selectively engage and disengage with any of the recesses formed in the buffer tube for locking the stock in various axial positions along the buffer tube,

wherein the lever arrangement includes a lever base having a lower end which is slidably received and retained in the front end of the stock, and an upper resent end in continuous frictional engagement with outer surfaces of the opposing side walls on the bottom member of the buffer tube, the lever base being connected between the stock and the buffer tube to prevent any movement of the stock relative to the buffer tube other than the longitudinal axial sliding movement of the stock along the buffer tube; and

wherein the upper resilient end extends up to and contacts the tubular body.