FIREARM

• US 20090031607A1
• Filed: 10/06/2008
• Published: 02/05/2009
• Est. Priority Date: 02/13/2004
• Status: Active Grant

• Current Assignee: RMDI, LLC
• Original Assignee: RMDI, LLC
• Inventors: Nebeker, Darin G., Holway, Jon C., Robinson, Alexander J.
• Granted Patent: US 7,975,595 B2
• Time in Patent Office: Days
• US Class Current: 42/16
• CPC Class Codes: F41A 11/00 Assembly or disassembly features; Modular concepts; Articulated or collapsible guns F41A3/64, F41A19/10 - F41A19/15, F41A21/48, F41A25/26 take precedence
• CPC Class Codes: F41A 15/14 the ejector being mounted on or within the bolt; Extractors per se
• CPC Class Codes: F41A 17/42 Safeties for locking the breech-block or bolt in a safety position F41A17/32, F41A17/36, F41A17/40 take precedence ; anti-rebound arrangements F41A3/70
• CPC Class Codes: F41A 17/76 automatically operated, i.e. operated by breech opening or closing movement
• CPC Class Codes: F41A 19/43 in bolt-action guns
• CPC Class Codes: F41A 21/485 using screws or bolts
• CPC Class Codes: F41A 3/26 semi-automatically or automatically operated, e.g. having a slidable bolt-carrier and a rotatable bolt
• CPC Class Codes: F41A 3/36 Semi-rigid bolt locks, i.e. having locking elements movably mounted on the bolt or on the barrel or breech housing
• CPC Class Codes: F41A 3/66 Breech housings or frames; Receivers
• CPC Class Codes: F41A 3/70 Anti-rebound arrangements, i.e. preventing rebound of the bolt out of the firing position safeties for locking the breech-block or bolt in a safety position F41A17/42
• CPC Class Codes: F41A 5/12 mounted in a gun having a fixed barrel
• CPC Class Codes: F41A 5/18 gas-operated
• CPC Class Codes: F41A 5/24 by direct action of gas pressure on bolt or locking elements

Abstract

A firearm having a bolt carrier comprising an operating rod slot that is open at an end of the bolt carrier. The bolt carrier also includes a cam slot extending from the operating rod slot. The firearm includes a bolt having a protrusion extending from the bolt which enters and is movable within the cam slot. The firearm further includes an operating rod comprising a piston and a foot. The foot is disposed within the operating rod slot to prevent the separation of the bolt from the bolt carrier and to connect the operating rod to the bolt carrier.

Claims

1. A firearm comprising:

a barrel;

a receiver;

an operating rod;

a bolt carrier supported by the receiver, the bolt carrier comprising,

a slot having an open end and configured to receive and engage a portion of the operating rod,

a cam slot in communication with the slot; and

a bolt supported by the bolt carrier, the bolt comprising a protrusion which is received within the cam slot to slidably connect the bolt to the bolt carrier,

wherein engagement of the portion of the operating rod within the slot prevents removal of the protrusion of the bolt from the cam slot.

2. The firearm of claim 1 wherein the bolt carrier further comprises a securing slot configured to receive a portion of the operating rod.

3. The firearm of claim 1, wherein the bolt carrier comprises a forward assist feature and the barrel comprises a chamber, wherein the firearm further comprises a non-reciprocating charging handle configured to engage the bolt carrier, the charging handle comprising a forward assist device that selectively engages the forward assist feature to provide manual locking of the bolt against the chamber.

4. The firearm of claim 3, wherein the non-reciprocating charging handle is configured to engage a lateral side of the bolt carrier.

5. The firearm of claim 1 wherein the cam slot comprises a locking guide and a support surface, where the locking guide is configured to rotate the bolt as the bolt abuts a chamber, and the support surface is configured to engage the bolt protrusion and to guide the bolt through the receiver without rotating the bolt.

6. The firearm of claim 1 wherein the bolt carrier further comprises a safety extension which includes and auto trip configured to engage an auto sear and allow for automatic fire.

7. The firearm of claim 6 wherein the auto sear is disposed proximate to a hammer.

8. The firearm of claim 1, wherein the operating rod comprises a foot and the portion of the operating rod engaging the slot is the foot.

9. A firearm comprising:

a bolt carrier comprising,

a slot having an open end disposed at an end of the bolt carrier,

a cam slot in communication with the slot,

an ejector slot, and

at least one carrier guide surface;

an ejector;

a bolt comprising a bolt face and an ejector access groove; and

a receiver comprising at least one guide surface,

wherein the ejector is configured to eject a cartridge from the bolt face via the ejector access groove, and the at least one carrier guide surface is configured to engage the at least one guide surface.

10. The firearm of claim 9 wherein the bolt further comprises a protrusion extending from the bolt, wherein the protrusion is received by the cam slot to thereby engage the bolt with the bolt carrier.

11. The firearm of claim 10 further comprising an operating rod engaging the slot and preventing removal of the protrusion of the bolt from the cam slot.

12. The firearm of claim 9 further comprising an operating rod wherein a portion of the operating rod engages the slot to couple the operating rod to the bolt carrier.

13. The firearm of claim 12 wherein the operating rod comprises a foot and the foot is the portion of the operating rod engaging the slot.

14. The firearm of claim 9 further comprising an operating rod including a foot, wherein the foot is at least partially disposable within the cam slot to prevent the removal of the protrusion of the bolt from cam slot and to connect the operating rod to the bolt carrier.

15. The firearm of claim 9, wherein the firearm comprises a barrel comprising a chamber, and the bolt carrier further comprises a forward assist feature, wherein the firearm further comprises a non-reciprocating charging handle, the charging handle comprising a forward assist device that selectively engages the forward assist feature to provide manual locking of the bolt against the chamber.

16. The firearm of claim 9, wherein the bolt further comprises a bolt face, a polymer spring, and an extractor, wherein the polymer spring biases the extractor against a base of a cartridge to retain the cartridge against the bolt face.

17. A firearm comprising:

a barrel;

a receiver;

an operating rod including a foot;

a bolt carrier supported by the receiver, the bolt carrier comprising,

a slot comprising,

an operating rod slot having an open end and configured to receive and engage the foot of the operating rod, and

a cam slot in communication with the operating rod slot; and

a bolt supported by the bolt carrier, the bolt comprising a protrusion which is received within the cam slot to slidably connect the bolt to the bolt carrier,

wherein engagement of the foot of the operating rod within the operating rod slot prevents removal of the protrusion of the bolt from the cam slot.