Ergonomic adjustable gun stock

• US 5,970,642 A
• Filed: 01/29/1998
• Issued: 10/26/1999
• Est. Priority Date: 01/29/1998
• Status: Expired due to Fees

• Current Assignee: Billy B. Martin
• Original Assignee: Billy B. Martin
• Inventors: Martin, Billy B.
• Primary Examiner(s): JOHNSON, STEPHEN
• Application Number:
  US09/015,718
• Time in Patent Office: 635 Days
• Field of Search: 42/71.01, 42/73, 42/74, 42/75.02, 42/75.03
• US Class Current: 42/73
• CPC Class Codes: F41C 23/00 Butts; Butt plates; Stocks handles for carrying smallarms F41C33/08
• 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

An ergonomic adjustable gun stock having an elongate forearm portion with a longitudinal concave receiver channel in its upper surface for receiving the barrel of a gun, a butt portion extending rearwardly from the forearm portion, a vertically adjustable cheek piece, a longitudinally adjustable and removable auxilary hand gripping element on the underside of the butt portion, and an adjustable recoil butt pad assembly mounted on the rear end of the butt portion. The forearm and butt portions are generally rectangular polygonal configurations having a subtantially flat bottom surface and substantially flat opposed sides. The butt portion has a rounded top surface substantially parallel with its flat bottom surface. A thumb receiving aperture extends transversely through the butt portion near its forward end and defines a contiguous generally vertical handgrip portion adjoined to the forearm portion and a horizontal lower portion which also has a substantially flat bottom surface. The cheek piece is an inverted generally U-shaped member having a rounded top surface and contiguous laterally spaced parallel sides. The butt portion has a cheek piece receiving recess sized and shaped to slidably receive the cheek piece in a lowermost position, such that the outer periphery of the cheek piece is generally flush with the outer periphery of the butt portion in its lowermost position.

Claims

1. An ergonomic adjustable gun stock, comprising:

an elongate forearm portion having a longitudinal axis with a longitudinal concave receiver channel in an upper surface for receiving a barrel of a gun and slots for receiving a trigger and trigger guard mechanism of the gun;

a butt portion extending rearwardly from said forearm portion terminating in a rear end;

recoil absorbing means mounted on said butt portion rear end;

an aperture extending transversely through said butt portion near a forward end thereof for receiving the thumb of a shooter;

a contiguous handgrip portion formed at a forward side of said aperture adjoined at an upper end to said forearm portion and at a lower end to said butt portion for receiving the fingers of said shooter; and

an adjustable cheek piece with locking means slidably mounted on opposed sides of said butt portion for vertical sliding movement relative thereto, said cheek piece capable of being locked at selected vertical distances relative to said butt portion and said forearm portion.

2. The gun stock according to claim 1, wherein

said handgrip portion has a central axis which is generally perpendicular to said forearm portion longitudinal axis.

3. The gun stock according to claim 1, wherein

said forearm portion is a generally rectangular polygonal configuration having a subtantially flat bottom surface and substantially flat opposed sides.

4. The gun stock according to claim 1, wherein

said butt portion is a generally rectangular polygonal configuration having a substantially flat bottom surface, substantially flat opposed sides, and a top surface substantially parallel with said flat bottom surface.

5. The gun stock according to claim 1, further comprising

a horizontal lower portion beneath said thumb receiving aperture contiguous with said handgrip portion and said butt portion and having a substantially flat bottom surface.

6. The gun stock according to claim 1, further comprising:

an adjustable and removable hand gripping element with locking means slidably mounted in a bottom surface of said butt portion configured to be gripped by the hand of said shooter that is not gripping said handgrip portion;

said hand gripping element capable of being locked at selected positions along a longitudinal portion of said butt portion bottom surface.

7. The gun stock according to claim 1, wherein

said recoil absorbing means includes a resilient base plate capable of being adjustably positioned forward or rearward at selected distances relative to said butt portion.

8. The gun stock according to claim 1, further comprising;

a first set of quick release insert elements flush mounted in laterally opposed sides of said forearm portion near a forward end thereof for removably receiving a quick release shoulder sling swivel ring on either of said laterally opposed sides of said forearm portion; and

a second set of quick release insert elements flush mounted in laterally opposed sides of said butt portion near a rearward end thereof for removably receiving a quick release shoulder sling swivel ring on either of said laterally opposed sides of said butt portion.

9. The gun stock according to claim 1, further comprising:

visual indexing means on said butt portion disposed adjacent to said cheek piece for visually indicating relative positions of said cheek piece.

10. The gun stock according to claim 1, wherein

said butt portion top surface is outwardly rounded;

said cheek piece is an inverted generally U-shaped member having a rounded top surface and contiguous laterally spaced parallel sides; and

a portion of said butt portion opposed sides and said outwardly rounded top surface are recessed to define a cheek piece receiving recess sized and shaped to slidably receive said cheek piece in a lowermost position, such that said cheek piece will be generally flush with said butt portion in said lowermost position.

11. A gun having an ergonomic adjustable gun stock, comprising:

a gun stock having an elongate forearm portion with a longitudinal axis and a longitudinal concave receiver channel in an upper surface thereof;

a gun barrel mounted in said receiver channel and having a trigger and trigger guard mechanism disposed beneath a bottom surface of said forearm portion;

a butt portion extending rearwardly from said forearm portion terminating in a rear end and having a forward end adjacent to said trigger and trigger guard;

recoil absorbing means mounted on said butt portion rear end;

an aperture extending transversely through said butt portion near a forward end thereof for receiving the thumb of a shooter;

a contiguous handgrip portion formed at a forward side of said aperture adjoined at an upper end to said forearm portion and at a lower end to said butt portion for receiving the fingers of said shooter; and

an adjustable cheek piece with locking means slidably mounted on opposed sides of said butt portion for vertical sliding movement relative thereto, said cheek piece capable of being locked at selected vertical distances relative to said butt portion and said forearm portion.

12. The gun according to claim 11, wherein

said handgrip portion has a central axis which is generally perpendicular to said forearm portion longitudinal axis.

13. The gun according to claim 11, wherein

said forearm portion is a generally rectangular polygonal configuration having a subtantially flat bottom surface and substantially flat opposed sides.

14. The gun according to claim 11, wherein

said butt portion is a generally rectangular polygonal configuration having a substantially flat bottom surface, substantially flat opposed sides, and a top surface substantially parallel with said flat bottom surface.

15. The gun according to claim 11, further comprising

a horizontal lower portion beneath said thumb receiving aperture contiguous with said handgrip portion and said butt portion and having a substantially flat bottom surface.

16. The gun according to claim 11, further comprising:

an adjustable and removable hand gripping element with locking means slidably mounted in a bottom surface of said butt portion configured to be gripped by the hand of said shooter that is not gripping said handgrip portion;

said hand gripping element capable of being locked at selected positions along a longitudinal portion of said butt portion bottom surface.

17. The gun according to claim 11, wherein

said recoil absorbing means includes a resilient base plate capable of being adjustably positioned forward or rearward at selected distances relative to said butt portion.

18. The gun according to claim 11, further comprising;

a first set of quick release insert elements flush mounted in laterally opposed sides of said forearm portion near a forward end thereof for removably receiving a quick release shoulder sling swivel ring on either of said laterally opposed sides of said forearm portion; and

a second set of quick release insert elements flush mounted in laterally opposed sides of said butt portion near a rearward end thereof for removably receiving a quick release shoulder sling swivel ring on either of said laterally opposed sides of said butt portion.

19. The gun according to claim 11, further comprising:

visual indexing means on said butt portion disposed adjacent to said cheek piece for visually indicating relative positions of said cheek piece.

20. The gun according to claim 11, wherein

said butt portion top surface is outwardly rounded;

said cheek piece is an inverted generally U-shaped member having a rounded top surface and contiguous laterally spaced parallel sides; and

a portion of said butt portion opposed sides and said outwardly rounded top surface are recessed to define a cheek piece receiving recess sized and shaped to slidably receive said cheek piece in a lowermost position, such that said cheek piece will be generally flush with said butt portion in said lowermost position.