WO2005119160A2 - Barrel assembly and attachement system - Google Patents
Barrel assembly and attachement system Download PDFInfo
- Publication number
- WO2005119160A2 WO2005119160A2 PCT/US2005/003078 US2005003078W WO2005119160A2 WO 2005119160 A2 WO2005119160 A2 WO 2005119160A2 US 2005003078 W US2005003078 W US 2005003078W WO 2005119160 A2 WO2005119160 A2 WO 2005119160A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- receiver
- barrel
- slot
- axial bore
- fore end
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
- F41A21/00—Barrels; Gun tubes; Muzzle attachments; Barrel mounting means
- F41A21/48—Barrel mounting means, e.g. releasable mountings for replaceable barrels
- F41A21/487—Barrel mounting means, e.g. releasable mountings for replaceable barrels using friction, e.g. by clamping a barrel surface
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
- F41A21/00—Barrels; Gun tubes; Muzzle attachments; Barrel mounting means
- F41A21/48—Barrel mounting means, e.g. releasable mountings for replaceable barrels
- F41A21/485—Barrel mounting means, e.g. releasable mountings for replaceable barrels using screws or bolts
Definitions
- the present invention relates generally to firearms, and in particular, to the assembly of a barrel and receiver and a method to set and maintain the head space of a bolt and barrel breach interface.
- the present invention generally is directed to a receiver and barrel assembly for a firearm, such as a rifle or other long gun or other types of firearms, and a method for assembling and attaching the barrel and receiver and setting the head space between the bolt and the barrel.
- the firearm readily is assembled at the time of manufacture, and readily disassembled as needed or desired to meet the needs of the individual shooter, without the need for special tooling or equipment.
- a split receiver for use in the barrel assembly of the present invention comprises a substantially cylindrical body having an aft end and a fore end.
- the body of the receiver has an axial bore extending therethrough from the aft end to the fore end, and a slot extending from the fore end toward the aft end of the body.
- the receiver also comprises a set screw or clamping screw aligned radially with the slot.
- the clamping screw may be positioned to tighten in a direction substantially perpendicular to the slot.
- the receiver also may include a barrel set screw proximate the fore end of the receiver.
- the barrel set screw may be positioned to tighten in a direction substantially perpendicular to the axial bore of the receiver.
- the barrel set screw may have a cone point that marks the barrel upon tightening.
- a barrel comprising a mating portion dimensioned to be received in the axial bore engages the open fore end of the receiver.
- the receiver can engage and secure the barrel into the receiver by tightening the clamping screw and the barrel set screw at a desired head space.
- a taper is formed in the receiver at the fore end, thereby securing the barrel and the receiver.
- a method of assembling a receiver and barrel includes providing a receiver having an axial bore therethrough and a slot having an open width, inserting a mating portion of a barrel into the axial bore, and tightening a securing means substantially radially aligned with the slot.
- FIG. 1 is a partially exploded side plan view of an exemplary firearm that may include a receiver and barrel assembly according to the present invention.
- FIG. 2 is an exploded perspective view of an exemplary receiver and barrel assembly according to the present invention.
- FIG. 3 is an alternate exploded perspective view of an exemplary receiver and barrel assembly according to the present invention.
- FIG. 4 is a bottom plan view of an exemplary assembled receiver and barrel according to the present invention.
- FIG. 5 is a side plan view of an exemplary assembled receiver and barrel according to the present invention.
- the present invention includes features that improve manufacturability and customization of a firearm.
- the features simplify manufacturing and permit rapid barrel replacement and head space adjustment without the need for special tooling or equipment.
- the present invention as described herein typically is used for rimfire rifle barrel attachment systems, but may be used with other long guns or other types of firearms.
- the barrel assembly 10 of the present invention generally includes a receiver 15 and a barrel 20 used in connection with a firearm, for example, a rifle F, shown in exploded view in FIG. 1.
- the receiver 15 has a substantially cylindrical body 22 having a first or aft end 25, a second or fore end 30, and an axial bore 35 extending therethrough from the aft end 25 to the fore end 30.
- the receiver 15 also includes a slot 40 having an open width W extending a length L from the fore end 30 toward the aft end 25 of the body 22.
- the open width W and length L vary for a given receiver design.
- the open width W is from about 0.025 in. to about 0.060 in., for example 0.040 in.
- the slot 40 has a length from about 0.5 in. to about 1.5 in. for example, 1 inch.
- the receiver also includes a clamping screw 38, set screw, locking pin, or other seeming means proximate the fore end 30 of the receiver 15 for releasably securing the barrel 20 within the receiver 15.
- the clamping screw 38 is substantially aligned radially with the slot 40 and tightens in a direction substantially perpendicular to the axial bore 35. In one aspect, the clamping screw 38 is aligned in a substantially perpendicular relation to the slot 40.
- the receiver further includes a barrel set screw 48, typically tightened at the time of manufacture. The barrel set screw 48 is positioned so that it tightens in a radial direction, substantially perpendicular to the axial bore 35.
- the barrel set screw 48 is a cone point screw, so that upon tightening against the barrel 20, the mating portion 55 of the barrel 20 is marked or scored permanently. The marking then can be used to determine whether the barrel 20 has been tampered with after assembly.
- the slot 40 is extended to a magazine chamber 70, thereby providing an overall clamping length 1/ (FIG. 4) of from about 2 inches to about 4 inches, for example, about 3 inches. By doing so, the body 22 of the receiver 15 more readily deforms during assembly, thereby requiring less torque to tighten the barrel set screw 48.
- the receiver 15 also may include a guide pin 45 (best seen in FIG. 4) that extends inward from the exterior of the receiver 15 into the axial bore 35.
- the guide pin 45 may be mounted flush to the exterior of the receiver 15 and may extend into the bore 35 about 0.05 in. to about 0.10 in., although greater or lesser amounts of extension of the guide pin also can be used as needed or desired.
- the barrel 20 includes a first end 75 defining a mating portion 55 with a mating shoulder 60 formed thereabout, and a second, distal end 80.
- the mating portion 55 is dimensioned to be slidably received in the axial bore 35 of the receiver 15.
- the barrel 20 also may include a guide groove (not shown) or similar directional feature dimensioned to slidably receive the guide pin 45 of the receiver 15. It should be noted that different barrels having different length mating portions also can be provided or used.
- the mating portion 55 of the barrel 20 is rotated as needed to align the guide groove 65 and the guide pin 45 of the receiver 15.
- the mating portion 55 then is slidably inserted into the axial bore 35 of the receiver 15.
- a bolt assembly 85 is inserted into the receiver 15 and closed.
- the bolt assembly 85 includes a bolt face 90 having a counterbore (not shown) therein.
- the barrel 20 is slidably adjusted within the axial bore 35 of the receiver 15 along the length thereof until a desired head space is attained. The minimum possible head space is attained by bringing the barrel breach face 105 into contact with the counterbore of the bolt face 90 within the receiver 15.
- Hard gauging techniques known to those of skill in the art can be used to attain a greater head space if desired.
- the ability to adjust the head space in this manner provides significant advantages over presently available receiver and barrel assemblies.
- the receiver and assembly of the present invention readily accommodate normal tolerance variations in the barrel and receiver, thereby simplifying the manufactiu ⁇ ng process. Additionally, secondary machining typically required to provide a proper engagement of the receiver and barrel is not required.
- FIGs. 4 and 5 when the barrel 20 is positioned relative to the receiver 15 at the desired head space, the clamping screw 38 is tightened. The tightening action causes the open width W of the slot to decrease.
- the tightening action causes the fore end 30 of the receiver 15 to deform toward and against the mating portion 55 of the barrel 20, thereby forming a taper in the receiver 15.
- the taper in the receiver decreases the diameter of the receiver 15 at the fore end 30 relative to the original diameter.
- a required torque may be specified.
- the required torque on the clamping screw is from about 100 in-lbf to about 125 in-lbf.
- the resulting taper helps to substantially securely clamp the receiver 15 to the barrel 20 seated therein. Additionally, tightening of the clamping screw 38 maintains the desired head space dimension.
- the barrel set screw 110 requires a minimum torque setting of at least about 25 in-lbf. Tightening the barrel set screw 110 in this manner may provide from about 500 lb to about 1000 lb of additional force in securing the ban-el 20 in the receiver 15. In contrast to presently known, more complicated assemblies, only two screws or other securing means are needed to secure the receiver to the barrel.
- the simple, easy to use design of the present invention permits the assembly to be customized according to the preferences of the user. Additionally, the present invention allows a damaged or worn barrel and/or receiver to be replaced with little effort or cost.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Telescopes (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05804743A EP1709384A2 (en) | 2004-01-30 | 2005-01-31 | Barrel assembly and attachement system |
MXPA06008592A MXPA06008592A (en) | 2004-01-30 | 2005-01-31 | Barrel assembly and attachement system. |
JP2006551562A JP2007519887A (en) | 2004-01-30 | 2005-01-31 | Barrel assembly and mounting system |
CA002554086A CA2554086A1 (en) | 2004-01-30 | 2005-01-31 | Barrel assembly and attachment system |
IL176931A IL176931A0 (en) | 2004-01-30 | 2006-07-18 | Barrel assembly and attachment system |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US54036004P | 2004-01-30 | 2004-01-30 | |
US60/540,360 | 2004-01-30 | ||
US11/047,019 US20050188591A1 (en) | 2004-01-30 | 2005-01-31 | Barrel assembly and attachment system |
US11/047,019 | 2005-01-31 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2005119160A2 true WO2005119160A2 (en) | 2005-12-15 |
WO2005119160A3 WO2005119160A3 (en) | 2006-04-27 |
Family
ID=34889751
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2005/003078 WO2005119160A2 (en) | 2004-01-30 | 2005-01-31 | Barrel assembly and attachement system |
Country Status (8)
Country | Link |
---|---|
US (1) | US20050188591A1 (en) |
EP (1) | EP1709384A2 (en) |
JP (1) | JP2007519887A (en) |
CA (1) | CA2554086A1 (en) |
IL (1) | IL176931A0 (en) |
MX (1) | MXPA06008592A (en) |
RU (1) | RU2006131122A (en) |
WO (1) | WO2005119160A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9347719B1 (en) | 2014-01-13 | 2016-05-24 | Ra Brands, L.L.C. | Replaceable feed ramp |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7596900B2 (en) * | 2003-08-04 | 2009-10-06 | Rmdi, L.L.C. | Multi-caliber ambidextrously controllable firearm |
US7971379B2 (en) * | 2004-02-13 | 2011-07-05 | Rmdi, Llc | Firearm |
US20050229463A1 (en) * | 2004-04-14 | 2005-10-20 | Paul Tashjian | Firearm assembly |
US8051595B2 (en) | 2004-06-16 | 2011-11-08 | Colt Defense, Llc | Automatic or semi-automatic rifle |
US7131228B2 (en) * | 2004-06-16 | 2006-11-07 | Colt Defense Llc | Modular firearm |
US7451564B2 (en) * | 2006-02-16 | 2008-11-18 | Full Nelson, Llc | Interchangeable barrel system for rifles |
US9151553B2 (en) | 2007-01-10 | 2015-10-06 | Smith & Wesson Corp. | Bolt action firearm and its method of assembly |
US9470472B2 (en) * | 2007-07-18 | 2016-10-18 | Abrams Airborne Manufacturing Inc. | Adaptive configuration for a firearm |
US7975417B2 (en) * | 2009-01-13 | 2011-07-12 | Ronald Duplessis | System for joining a barrel to the receiver of a bolt action rifle |
US8479429B2 (en) | 2009-03-24 | 2013-07-09 | Sturm, Ruger & Company, Inc. | Firearm with quick coupling barrel system |
US9057576B2 (en) | 2009-03-24 | 2015-06-16 | Sturm, Ruger & Company, Inc. | Firearm with quick coupling barrel system |
US8490312B2 (en) | 2009-03-24 | 2013-07-23 | Sturm, Ruger & Company, Inc. | Quick coupling barrel system for firearm |
US8505227B2 (en) | 2009-03-24 | 2013-08-13 | Sturm, Ruger & Company, Inc. | Firearm with quick coupling barrel interlock system |
US20130219765A1 (en) * | 2012-02-28 | 2013-08-29 | Dikar S. Coop. Ltda | Firearm with barrel fixed by at least one screw |
US8857096B2 (en) * | 2012-08-14 | 2014-10-14 | Troy Rhea MCCLINTOCK | Forward pistol mount |
US8782943B2 (en) | 2012-10-26 | 2014-07-22 | Ra Brands, L.L.C. | Quick detach barrel mounting system |
US8910408B2 (en) * | 2012-12-19 | 2014-12-16 | Accuracy International of North America, Inc. | Firearm with barrel cinching clamp |
US9383154B2 (en) | 2013-12-12 | 2016-07-05 | Ra Brands, L.L.C. | Gas vent for firearm |
US9429379B2 (en) * | 2014-02-10 | 2016-08-30 | California Business Environments, Inc. | Rimfire rifle |
US10352643B2 (en) * | 2016-09-21 | 2019-07-16 | Vincent P. Battaglia | Quad lock multicaliber rifle receiver with locking barrel |
AT519567B1 (en) * | 2017-05-04 | 2018-08-15 | Steyr Mannlicher Gmbh | Housing for a firearm with changeable barrel |
US11143478B2 (en) * | 2019-04-05 | 2021-10-12 | Sturm, Ruger & Company, Inc | Free-floating barrel mounting system for firearm |
US11402169B1 (en) | 2020-03-31 | 2022-08-02 | Kevin Michael Sohegian | Switch barrel rifle with adjustable headspace |
KR102141665B1 (en) * | 2020-05-21 | 2020-08-05 | 에스앤티모티브 주식회사 | Gun with barrel assimbly module |
AU2021323936B2 (en) * | 2020-08-13 | 2023-01-12 | Lightforce Australia Pty Limited | A rifle receiver arrangement and a method of assembly of a rifle barrel to said rifle receiver |
WO2023205491A1 (en) * | 2022-04-22 | 2023-10-26 | Savage Arms, Inc. | Rimfire takedown firearm |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE12114C (en) * | 1880-07-04 | 1881-01-18 | B. M. GÜNTHER in Leipzig und B. HEMMING in Suhl | Connection of barrel and sleeve in rear-loading rifles |
US2241825A (en) * | 1938-05-14 | 1941-05-13 | Western Cartridge Co | Firearm construction |
US2497861A (en) * | 1947-09-19 | 1950-02-21 | Jr Edwards Brown | Mechanism for bedding a firearm barrel in a stock |
US3177603A (en) * | 1964-03-20 | 1965-04-13 | Olin Mathieson | Barrel lock and feed ramp device |
US3711980A (en) * | 1970-09-21 | 1973-01-23 | R Palama | Semi-automatic marksmanship competition pistol for rapid precision firing |
US3731418A (en) * | 1970-11-25 | 1973-05-08 | Sauer & Sohn Gmbh | Small firearms with exchangeable barrel |
Family Cites Families (13)
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US2736119A (en) * | 1956-02-28 | Firearm having chamber member | ||
US3117603A (en) * | 1961-08-25 | 1964-01-14 | Norton Co | Abrasive sectors and mounting apparatus |
US4316339A (en) * | 1979-10-22 | 1982-02-23 | Herriott Ray G | Handgun having interchangeable barrels |
US4685235A (en) * | 1984-03-26 | 1987-08-11 | Maremont Corporation | Barrel alignment device in automatic weapon |
US5247758A (en) * | 1990-12-24 | 1993-09-28 | Mason James D | Rifle barrel truss mounting |
US6123007A (en) * | 1993-05-19 | 2000-09-26 | Metal Storm Limited | Barrel assembly |
US5479737A (en) * | 1994-02-03 | 1996-01-02 | The Marlin Firearms Company | Firearm barrel assembly |
US5454182A (en) * | 1994-03-25 | 1995-10-03 | Lewis; Alan S. | Black powder firearm |
US5907919A (en) * | 1996-12-31 | 1999-06-01 | Remington Arms Company, Inc. | Barrel and receiver assembly |
US6266908B1 (en) * | 1998-10-16 | 2001-07-31 | Smith & Wesson Corp. | Firearm frame and barrel assembly, method of assembling and assembly tool |
US6418655B1 (en) * | 1999-08-19 | 2002-07-16 | Ira M. Kay | Underbarrel shotgun |
US6470616B1 (en) * | 2001-01-31 | 2002-10-29 | David Richard Clay | Combination barrel adjustment and magazine cutoff for a takedown firearm |
US6655372B1 (en) * | 2002-04-17 | 2003-12-02 | Damion J. Field | Quick detachable gun barrel assembly |
-
2005
- 2005-01-31 EP EP05804743A patent/EP1709384A2/en not_active Withdrawn
- 2005-01-31 US US11/047,019 patent/US20050188591A1/en not_active Abandoned
- 2005-01-31 MX MXPA06008592A patent/MXPA06008592A/en unknown
- 2005-01-31 CA CA002554086A patent/CA2554086A1/en not_active Abandoned
- 2005-01-31 WO PCT/US2005/003078 patent/WO2005119160A2/en not_active Application Discontinuation
- 2005-01-31 JP JP2006551562A patent/JP2007519887A/en not_active Withdrawn
- 2005-01-31 RU RU2006131122/02A patent/RU2006131122A/en not_active Application Discontinuation
-
2006
- 2006-07-18 IL IL176931A patent/IL176931A0/en unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE12114C (en) * | 1880-07-04 | 1881-01-18 | B. M. GÜNTHER in Leipzig und B. HEMMING in Suhl | Connection of barrel and sleeve in rear-loading rifles |
US2241825A (en) * | 1938-05-14 | 1941-05-13 | Western Cartridge Co | Firearm construction |
US2497861A (en) * | 1947-09-19 | 1950-02-21 | Jr Edwards Brown | Mechanism for bedding a firearm barrel in a stock |
US3177603A (en) * | 1964-03-20 | 1965-04-13 | Olin Mathieson | Barrel lock and feed ramp device |
US3711980A (en) * | 1970-09-21 | 1973-01-23 | R Palama | Semi-automatic marksmanship competition pistol for rapid precision firing |
US3731418A (en) * | 1970-11-25 | 1973-05-08 | Sauer & Sohn Gmbh | Small firearms with exchangeable barrel |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9347719B1 (en) | 2014-01-13 | 2016-05-24 | Ra Brands, L.L.C. | Replaceable feed ramp |
US9562730B2 (en) | 2014-01-13 | 2017-02-07 | Ra Brands, L.L.C. | Replaceable feed ramp |
Also Published As
Publication number | Publication date |
---|---|
US20050188591A1 (en) | 2005-09-01 |
MXPA06008592A (en) | 2006-08-28 |
JP2007519887A (en) | 2007-07-19 |
RU2006131122A (en) | 2008-03-10 |
CA2554086A1 (en) | 2005-12-15 |
WO2005119160A3 (en) | 2006-04-27 |
EP1709384A2 (en) | 2006-10-11 |
IL176931A0 (en) | 2006-12-10 |
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