Adjustable shoulder stock apparatus for use with firearms

• US 7,849,626 B2
• Filed: 11/26/2008
• Issued: 12/14/2010
• Est. Priority Date: 05/29/2006
• Status: Expired due to Fees

• Current Assignee: Heckler & KOCH GmbH (H&K AG)
• Original Assignee: Heckler & KOCH GmbH (H&K AG)
• Inventors: Fluhr, Norbert
• Primary Examiner(s): Carone; Michael
• Assistant Examiner(s): Troy; Daniel J
• Application Number:
  US12/324,577
• Publication Number:
  US 20090139128A1
• Time in Patent Office: 748 Days
• Field of Search: 42/710.1, 42/72, 42/73, 42/750.3
• US Class Current: 42/73
• CPC Class Codes: F41C 23/04 Folding or telescopic stocks or stock parts articulated or collapsible guns F41A11/04
• CPC Class Codes: F41C 23/06 Stocks or firearm frames specially adapted for recoil reduction
• CPC Class Codes: F41C 23/14 Adjustable stock or stock parts, i.e. adaptable to personal requirements, e.g. length, pitch, cast or drop

Abstract

Adjustable shoulder stock apparatus for use with firearms are described. An example adjustable shoulder stock apparatus for use with firearms includes a shoulder stock into which a connecting piece of the firearm is to be inserted. The connecting piece defines a plurality of boreholes. Additionally, the example adjustable shoulder stock apparatus includes a bolt having a end to be inserted in one of the plurality of boreholes to secure the shoulder stock relative to the connecting piece. Further the example adjustable shoulder stock apparatus includes a lever that defines a recess that is open toward a top of the firearm and is closed toward a bottom of the firearm. An opposite end of the bolt is positioned in the recess and coupled to the lever. The lever is to remove the bolt from the one of the plurality of boreholes. The lever comprises a projection to engage a wall of the shoulder stock to prevent movement of the lever past the wall. Further still, the example adjustable shoulder stock apparatus includes a cross pin positioned through the bolt to couple the bolt to the lever, wherein the cross pin does not protrude beyond a molded material of the lever and a plurality of lateral flanks of the shoulder stock in which the lever is positioned.

Claims

1. An adjustable shoulder stock apparatus for use with firearms, comprising:

a shoulder stock into which a connecting piece of a firearm is to be inserted, wherein the connecting piece defines a plurality of boreholes;

a bolt having an end to be inserted in one of the plurality of boreholes to secure the shoulder stock relative to the connecting piece;

a lever that defines a recess that is open toward a top of the firearm and is closed toward a bottom of the firearm, wherein an opposite end of the bolt is positioned in the recess and coupled to the lever and wherein the lever pivots on a first edge of the lever to remove the bolt from the one of the plurality of boreholes, wherein the lever comprises a projection to engage a wall of the shoulder stock to prevent movement of the lever past the wall;

a second edge of the shoulder stock to be engaged by a portion of the lever when the lever is pivoted on the first edge a distance relative to the shoulder stock to adjust a position of the shoulder stock relative to the connecting piece, wherein the lever is pivotable about the second edge to remove the shoulder stock from the connecting piece;

a swivel cross pin positioned through the bolt to pivotably couple the bolt to the lever, wherein the swivel cross pin does not protrude beyond a molded material of the lever; and

a plurality of lateral flanks of the shoulder stock between which the lever is positioned.

2. The adjustable shoulder stock apparatus as defined in claim 1, further comprising a tension member positioned between the swivel cross pin and the bolt.

3. The adjustable shoulder stock apparatus as defined in claim 1, wherein the bolt is positioned in a tapered borehole that includes a recess defined by the shoulder stock, wherein a spring is positioned in the recess adjacent the bolt.

4. The adjustable shoulder stock apparatus as defined in claim 1, wherein a surface of the lever is to engage a surface of a block of the shoulder stock.

5. The adjustable shoulder stock apparatus as defined in claim 1, wherein the lever comprises a lip to enable the lever to be pivoted about the second edge to remove the shoulder stock from the connecting piece.

6. The adjustable shoulder stock apparatus as defined in claim 5, wherein, in a resting position, the lip is unable to be grasped to adjust a length of the shoulder stock relative to the connecting piece.

7. The adjustable shoulder stock apparatus as defined in claim 5, wherein, in a resting position, the lip engages a portion of the shoulder stock.

8. The adjustable shoulder stock apparatus as defined in claim 1, wherein the lever and the shoulder stock are made of a plastic material.

9. An adjustable shoulder stock apparatus for use with firearms, comprising:

a shoulder stock;

a bolt movably positioned in a borehole defined by the shoulder stock, wherein the bolt is to removably engage one of a plurality of boreholes defined by a connecting piece of a firearm;

a lever pivotably coupled to the bolt via a swivel cross pin, wherein the lever is pivotable about a first edge in a first direction to disengage the bolt from the one of the plurality of boreholes and wherein the lever is pivotable in the first direction about a second edge defined by the shoulder stock, which is different from the first edge, to move an end of the bolt a distance from a horizontal surface of the shoulder stock to enable the shoulder stock to be attached or removed from the firearm; and

a plurality of lateral flanks to prevent the lever from being impacted, wherein the lever is positioned between the plurality of lateral flanks such that to pivot the lever relative to the first edge, a force is to be exerted on a portion of the lever between the plurality of lateral flanks.

10. The adjustable shoulder stock apparatus as defined in claim 9, wherein the lever includes a protrusion configured to engage a wall of the shoulder stock to prevent the protrusion from pivoting past the wall toward the front of the firearm.

11. The adjustable shoulder stock apparatus as defined in claim 9, wherein the lever includes a lip to enable the lever to be pivoted about the second edge after the lever has been pivoted about the first edge.

12. The adjustable shoulder stock apparatus as defined in claim 9, wherein the swivel cross pin does not extend from a molded material of the lever.

13. The adjustable shoulder stock apparatus as defined in claim 9, wherein an interaction between the lever, the plurality of lateral flanks, and a surface of the shoulder stock substantially prevents moisture from penetrating an interior of the shoulder stock.

14. The adjustable shoulder stock apparatus as defined in claim 9, further comprising a spring adjacent the bolt to urge the bolt toward the one of the plurality of boreholes.

15. An adjustable shoulder stock apparatus for use with firearms, comprising:

a shoulder stock into which a connecting piece of a firearm is to be inserted, wherein the connecting piece defines a plurality of boreholes;

a bolt having an end to be inserted in one of the plurality of boreholes to secure the shoulder stock relative to the connecting piece;

a lever that defines a recess that is open toward a top of the firearm and is closed toward a bottom of the firearm into which an opposite end of the bolt is to be positioned and pivotably coupled to the lever via a swivel cross pin, wherein the lever is pivotable about a first edge in a first direction to remove the bolt from the one of the plurality of boreholes to enable a position of the shoulder stock to be adjusted relative to the connecting piece;

a plurality of lateral flanks of the shoulder stock between which the lever is positioned; and

a second edge different from the first edge about which the lever is to pivot in the first direction to remove the shoulder stock from the connecting piece.

16. The adjustable shoulder stock apparatus as defined in claim 15, wherein the lever comprises a projection to engage a wall of the shoulder stock to prevent movement of the lever past the wall.

17. The adjustable shoulder stock apparatus as defined in claim 15, wherein the swivel cross pin does not protrude beyond a molded material of the lever.

18. The adjustable shoulder stock apparatus as defined in claim 15, further comprising a spring adjacent the bolt to urge the bolt toward the one of the plurality of boreholes.

19. The adjustable shoulder stock apparatus as defined in claim 15, wherein an interaction between the lever and the plurality of lateral flanks substantially prevents moisture from penetrating an interior of the shoulder stock.