Underbarrel shotgun

• US 6,418,655 B1
• Filed: 08/19/1999
• Issued: 07/16/2002
• Est. Priority Date: 08/19/1999
• Status: Expired due to Term

• Current Assignee: Ira M. Kay
• Original Assignee: Ira M. Kay
• Inventors: Kay, Ira M.
• Primary Examiner(s): JOHNSON, STEPHEN
• Application Number:
  US09/377,068
• Time in Patent Office: 1,062 Days
• Field of Search: 42/700.8, 42/750.2, 891/85, 891/870.1, 891/870.2
• US Class Current: 42/75.02
• CPC Class Codes: F41A 19/30 in bolt-action guns
• CPC Class Codes: F41A 3/46 mounted on the bolt F41A3/48 takes precedence
• CPC Class Codes: F41A 3/72 Operating handles or levers; Mounting thereof in breech-blocks or bolts F41C7/02, F41C7/06 take precedence
• CPC Class Codes: F41C 7/00 Shoulder-fired smallarms, e.g. rifles, carbines, shotguns specially adapted for underwater use F41C9/06
• CPC Class Codes: F41F 1/08 Multibarrel guns, e.g. twin guns

Abstract

A shotgun comprises a receiver made from a first material; barrel having a portion extending into the receiver and made from a second material; a collar nut securing the barrel to the receiver; a bolt assembly disposed within the receiver and including a locking block configured to project into the barrel portion and lock the bolt assembly to the barrel prior to firing, the bolt assembly including a firing pin; and a trigger mechanism including a hammer for striking the firing pin.

Claims

1. A gun, comprising:

a) a receiver made from a first material;

b) barrel having a portion extending into said receiver and made from a second material;

c) a collar nut securing said barrel to said receiver;

d) a bolt assembly disposed within said receiver and including a locking block configured to project into said barrel portion and lock said bolt assembly to said barrel prior to firing;

e) said bolt assembly including a firing pin;

f) a trigger mechanism including a hammer for striking said firing pin;

g) said bolt assembly including a bolt having a recess into which said locking block is disposed;

h) said bolt and said locking block including respective slots inclined opposite to one another;

i) said bolt assembly including a bolt carrier having a vertical slot;

j) said bolt assembly including a pin received through said slots thereby to secure said bolt to said bolt carrier; and

k) said slots are configured such that translatory movement of said bolt carrier causes said locking block to move vertically within said recess.

2. A gun, comprising:

a) a receiver made from a first material;

b) barrel having a portion extending into said receiver and made from a second material;

c) a collar nut securing said barrel to said receiver;

d) a bolt assembly disposed within said receiver and including a locking block configured to project into said barrel portion and lock said bolt assembly to said barrel prior to firing;

e) said bolt assembly including a firing pin;

f) a trigger mechanism including a hammer for striking said firing pin;

g) said bolt assembly including a bolt having a recess into which said locking block is disposed;

h) said locking block includes a keyhole opening;

i) said bolt assembly including a firing pin having a smaller diameter portion and a larger diameter portion, said smaller diameter portion is next to and forwardly of said larger diameter portion, said firing pin being received within a longitudinal opening of said bolt and said bolt carrier and through said keyhole opening;

j) said keyhole opening including a smaller diameter opening configured to receive said smaller diameter portion and a larger diameter opening configured to allow said larger diameter portion to pass through; and

k) said keyhole opening is so disposed such that when said locking block is in a retracted position within said recess, said smaller diameter portion is disposed within said smaller diameter opening of said keyhole opening, thereby preventing forwardly movement of said firing pin.

3. A gun, comprising:

a) a receiver made from a first material;

b) barrel having a portion extending into said receiver and made from a second material;

c) a collar nut securing said barrel to said receiver;

d) a bolt assembly disposed within said receiver and including a locking block configured to project into said barrel portion and lock said bolt assembly to said barrel prior to firing;

e) said bolt assembly including a firing pin;

f) a trigger mechanism including a hammer for striking said firing pin;

g) said bolt assembly including a handle; and

h) said handle is positionable transversely to one side or another side of said receiver.

4. A gun as in claim 3, wherein:

a) said first material is aluminum.

5. A gun as in claim 3, wherein:

b) said second material is steel.

6. A gun as in claim 3, wherein:

a) said firing pin includes end portions recessed within said bolt assembly.

7. A gun as in claim 3, wherein:

a) said hammer is pivotable from a cocked position about a pivot to a firing position; and

b) said bolt assembly is adapted to engage and move said hammer to said cocked position as said bolt assembly is pulled back.

8. A gun as in claim 7, wherein:

a) said cocked position is substantially horizontal; and

b) said firing position is substantially vertical.

9. A gun as in claim 3, wherein:

a) said trigger mechanism includes a trigger pivotable about a pivot carried by a body movable horizontally; and

b) said hammer is released when said trigger is pivoted and said body is moved horizontally.

10. A gun as in claim 3, wherein:

a) said handle is positionable parallel to said barrel.

11. A bolt assembly for a single shot firearm, comprising:

a) a bolt;

b) a bolt carrier sidably connected to said bolt;

c) a firing pin disposed in a longitudinal opening through said bolt and bolt carrier;

d) a locking block configured to lock said bolt assembly preparatory to firing;

e) said bolt includes a recess into which said locking block is disposed;

f) said bolt and said locking block includes respective slots inclined opposite to one another;

g) said bolt assembly includes a bolt carrier having a vertical slot;

h) said bolt assembly includes a pin received through said slots thereby to secure said bolt to said bolt carrier; and

i) said slots are configured such that translatory movement of said bolt carrier causes said locking block to move vertically within said recess.

12. A bolt assembly as in claim 11, wherein:

a) said locking block includes a keyhole opening;

b) said bolt assembly includes a firing pin having a smaller diameter portion and a larger diameter portion, said smaller diameter portion is next to and forwardly of said larger diameter portion, said firing pin being received within a longitudinal opening of said bolt and said bolt carrier and through said key hole opening;

c) said keyhole opening includes a smaller diameter opening configured to receive said smaller diameter portion and a larger diameter opening configured to allow said larger diameter portion to pass through; and

d) said keyhole opening is so disposed such that when said locking block is in a retracted position within said recess, said smaller diameter portion is disposed within said smaller diameter opening of said key hole opening, thereby preventing forwardly movement of said firing pin.

13. A gun, comprising:

a) a barrel and a receiver operably secured to said barrel;

b) a bolt assembly disposed within said receiver;

c) said bolt assembly including a firing pin;

d) a trigger mechanism including a hammer for striking said firing pin;

e) said bolt assembly including a bolt having a recess into which said locking block is disposed;

f) said bolt and said locking block including respective slots inclined opposite to one another;

g) said bolt assembly including a bolt carrier having a vertical slot;

h) said bolt assembly including a pin received through said slots thereby to secure said bolt to said bolt carrier; and

i) said slots are configured such that translatory movement of said bolt carrier causes said locking block to move into or out of said recess.

14. A gun, comprising:

a) a barrel and a receiver operably secured to said barrel;

b) a bolt assembly disposed within said receiver;

c) said bolt assembly including a recess into which said locking block is disposed;

d) said bolt assembly including a firing pin;

e) a trigger mechanism including a hammer for striking said firing pin;

f) said bolt assembly including a bolt having a recess into which said locking block is disposed;

g) said locking block including a keyhole opening;

h) said bolt assembly including a firing pin having a smaller diameter portion and a larger diameter portion, said smaller diameter portion is next to and forwardly of said larger diameter portion, said firing pin being received within a longitudinal opening of said bolt and said bolt carrier and through said keyhole opening;

i) said keyhole opening including a smaller diameter opening configured to receive said smaller diameter portion and a larger diameter opening configured to allow said larger diameter portion to pass through; and

j) said keyhole opening is so disposed such that when said locking block is in a retracted position within said recess, said smaller diameter portion is disposed within said smaller diameter opening of said keyhole opening, thereby preventing forwardly movement of said firing pin.

15. A bolt assembly for a single shot firearm, comprising:

a) a bolt;

b) a firing pin disposed in a longitudinal opening through said bolt;

c) a locking block configured to lock said bolt assembly preparatory to firing;

d) said bolt including a recess into which said locking block is disposed;

e) said locking block including a keyhole opening;

f) said bolt assembly including a firing pin having a smaller diameter portion and a larger diameter portion, said smaller diameter portion is next to and forwardly of said larger diameter portion, said firing pin being received within a longitudinal opening of said bolt and through said key hole opening;

g) said keyhole opening including a smaller diameter opening configured to receive said smaller diameter portion and a larger diameter opening configured to allow said larger diameter portion to pass through; and

h) said keyhole opening is so disposed such that when said locking block is in a retracted position within said recess, said smaller diameter portion is disposed within said smaller diameter opening of said key hole opening, thereby preventing forwardly movement of said firing pin.

16. A bolt assembly for a single shot firearm, comprising:

a) a bolt;

b) a firing pin disposed in a longitudinal opening through said bolt;

c) a locking block configured to lock said bolt assembly preparatory to firing;

d) said bolt assembly including a recess into which said locking block is disposed; and

e) means for moving said locking block within said recess into a locked or unlocked position, said means for moving including respective slots in said bolt assembly and said locking block and a pin received within said slots.