US20070006720A1 - Retractable inner barrel structure of a bolt - Google Patents

Retractable inner barrel structure of a bolt Download PDF

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Publication number
US20070006720A1
US20070006720A1 US11/177,421 US17742105A US2007006720A1 US 20070006720 A1 US20070006720 A1 US 20070006720A1 US 17742105 A US17742105 A US 17742105A US 2007006720 A1 US2007006720 A1 US 2007006720A1
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US
United States
Prior art keywords
barrel
inner barrel
retractable inner
flexible outer
shroud
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11/177,421
Inventor
Yin-Hsi Liao
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guay Guay Trading Co Ltd
Original Assignee
Guay Guay Trading Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guay Guay Trading Co Ltd filed Critical Guay Guay Trading Co Ltd
Priority to US11/177,421 priority Critical patent/US20070006720A1/en
Assigned to GUAY GUAY TRADING CO., LTD. reassignment GUAY GUAY TRADING CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LIAO, YIN-HSI
Publication of US20070006720A1 publication Critical patent/US20070006720A1/en
Abandoned legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41WEAPONS
    • F41AFUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A3/00Breech mechanisms, e.g. locks
    • F41A3/12Bolt action, i.e. the main breech opening movement being parallel to the barrel axis
    • F41A3/54Bolt locks of the unlocked type, i.e. being inertia operated
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41WEAPONS
    • F41AFUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A19/00Firing or trigger mechanisms; Cocking mechanisms
    • F41A19/03Shot-velocity control
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41WEAPONS
    • F41AFUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A25/00Gun mountings permitting recoil or return to battery, e.g. gun cradles; Barrel buffers or brakes
    • F41A25/10Spring-operated systems
    • F41A25/12Spring-operated systems using coil springs
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41WEAPONS
    • F41AFUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A3/00Breech mechanisms, e.g. locks
    • F41A3/64Mounting of breech-blocks; Accessories for breech-blocks or breech-block mountings
    • F41A3/78Bolt buffer or recuperator means
    • F41A3/80Adjustable spring buffers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41WEAPONS
    • F41AFUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A3/00Breech mechanisms, e.g. locks
    • F41A3/64Mounting of breech-blocks; Accessories for breech-blocks or breech-block mountings
    • F41A3/78Bolt buffer or recuperator means
    • F41A3/82Coil spring buffers

Abstract

A retractable inner barrel structure of a bolt includes a bolt handle which is installed inside a latching groove of a flexible outer barrel with a fixing pin and a spring, and is passed through a gliding groove of a gun barrel, so as to be fixed into a restraining part of the gliding groove, upon pulling back the flexible outer barrel. A retractable inner barrel is located inside the flexible outer barrel, and is provided with two racks at two sides of the retractable inner barrel. Moreover, a spring for fixing a gun barrel shroud is mounted on one of the racks, and a pillar and a seat are also located inside the retractable inner barrel. The gun barrel shroud is provided with a latching groove and an adjusting device including a poking switch for adjusting a trajectory is also installed inside the gun barrel shroud.

Description

    BACKGROUND OF THE INVENTION
  • (a) Field of the Invention
  • The present invention relates to a retractable inner barrel structure of a bolt, and more particularly to a multi-step retractable inner barrel structure constituted by a utilization of a flexible outer barrel, a retractable inner barrel, a pillar, and a seat.
  • (b) Description of the Prior Art
  • As shown in FIG. 1 and FIG. 2, a bolt A1 is latched into a latching groove A2 of an inner barrel A of a conventional firearm. An elastic spring A3, is located inside the inner barrel A, and is mounted on a seat A4 at a rear end of the gun barrel. When the bolt A1 pulls back the inner barrel A, the bolt A1, can be fixed in a gliding groove A5 of the gun barrel, so as to fix the inner barrel A in an interior at the rear end of the gun barrel upon putting the inner barrel A into a holding groove A6 inside the gun barrel.
  • However, a part of space inside the firearm needs to be taken upon installing the inner barrel A of the firearm. Therefore, it is easy to limit a shape of the firearm when installing the inner barrel A in various firearms.
  • Accordingly, how to eliminate the aforementioned shortcoming is a technical issue to be solved by the inventor.
  • SUMMARY OF THE INVENTION
  • The present invention is to provide a multi-step retractable inner barrel structure of a bolt mainly constituted by a flexible outer barrel, a retractable inner barrel, a pillar, and a seat, wherein the outer barrel is provided with a latching groove, and a bolt handle is located inside the latching groove. The bolt handle is passed through a gliding groove of a gun barrel, so as to be fixed in a restraining part of the gliding groove when the flexible outer barrel is pulled back. A gun barrel shroud is located between the retractable inner barrel and the seat, and is provided with a latching groove which is corresponding to a latching piece mounted on a safety seat. When emplacing the retractable inner barrel into the aforementioned flexible outer barrel, the gun barrel shroud barrel moves backward simultaneously, so as to expose an adjusting device inside the gun barrel shroud, this enables a poking switch on the adjusting device to be used to provide a user to adjust a trajectory of shooting.
  • To enable a further understanding of the said objectives and the technological methods of the invention herein, the brief description of the drawings below is followed by the detailed description of the preferred embodiments.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 shows a perspective view of a conventional application.
  • FIG. 2 shows a schematic view of motion of a conventional application.
  • FIG. 3 shows a perspective view of the present invention.
  • FIG. 4 shows a perspective view of compartments of the present invention.
  • FIG. 5 shows a perspective view of a portion of compartments of the present invention.
  • FIG. 6 shows a schematic view of motion of the present invention.
  • FIG. 7 shows a schematic view of an implementation of the present invention.
  • FIG. 8 shows another schematic view of an implementation of the present invention.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • Referring to FIG. 3, FIG. 4, and FIG. 5, a retractable inner barrel B of a bolt is composed of a bolt handle C, a flexible outer barrel D, a retractable inner barrel E, a seat F, a gun barrel shroud G, a safety seat H, and an adjusting device I. The bolt handle C is installed in a latching groove D1 of the flexible outer barrel D with a fixing ping C1 and a spring C2. Whereas a bore C3 is located inside the latching groove D1 for fixing the fixing pin C1. Moreover, the bolt handle C is passed through a gliding groove C4 of the gun barrel, so as to fix the bolt handle C into a restraining part C5 of the gliding groove C4 upon pulling back the flexible outer barrel D.
  • A spring D2 is located inside the flexible outer barrel D, and is connected to the retractable inner barrel E, which is provided with two racks E1 at two sides. One of the racks E1 is mounted with a spring G1 for fixing the gun barrel shroud G. Moreover, a spring E2 is located inside the retractable inner barrel E, and is connected to a pillar F1 and the seat F. The flexible outer barrel D, the retractable inner barrel E, the pillar F1, and the seat F can constitute into the multi-step retractable inner barrel structure B.
  • The gun barrel shroud G is located between the retractable inner barrel E and the seat F, and is provided with a latching groove G2 which is corresponding to a latching piece H1 latched onto the safety seat H. When the retractable inner barrel E is emplaced into the aforementioned flexible outer barrel D, the gun barrel shroud G moves backward simultaneously, so as to expose the adjusting device I inside the gun barrel shroud G, this enables a poking switch L1 on the adjusting device I to be used to provide a user to adjust a trajectory of shooting.
  • Referring to FIG. 6, FIG. 7, and FIG. 8, upon using the present invention, the bolt handle C on the flexible outer barrel D is pulled back so that the bolt handle C can move inside the gliding groove C4 of the gun barrel and be fixed into the retraining part C5 of the gliding groove C4. In addition, when the bolt handle C is fixed into the retraining part C5 of the gliding groove C4, the retractable inner barrel moves simultaneously to enter the flexible outer barrel D, thereby accomplishing a first step of retracing motion.
  • However, when the flexible outer barrel D and the retractable inner barrel E accomplish the aforementioned first step of retracting motion, the spring E2 located inside the retractable inner barrel E moves towards the pillar F1 and the seat F simultaneously, so as to accomplish a second step of retracting motion between the retractable inner barrel E, the pillar F1, and the seat F.
  • When the spring E2 located inside the retractable inner barrel E moves to the pillar F1 and seat F, the gun barrel shroud G and the spring G also move backward at the same time. The gun barrel shroud G is provided with the latching groove G2 which is corresponding to the latching piece H1 latched on the safety seat H. When the aforementioned retractable inner barrel E is emplaced into the flexible outer barrel D, the gun barrel shroud E moves backward at the same time, so as to expose the adjusting device I inside the gun barrel shroud G, this enables the poking switch I1 on the adjusting device I to be used to provide a user to adjust a trajectory of shooting.
  • To further manifest the advancement and practicability of the present invention, the present invention is compared with a conventional application as follow:
  • Shortcomings of a conventional application
  • (1) A holding groove is required for emplacing an inner barrel.
  • (2) A part of space inside a firearm is taken.
  • (3) It is easy to limit a shape of a firearm.
  • (4) It does not have advancement and practicability.
  • Advantages of the present invention
  • (1) It is provided with a multi-step retractable inner barrel structure.
  • (2) It can be used in association with a shape of all kinds of firearm.
  • (3) It can save an inner space of firearm.
  • (4) It is not easy to limit a shape of firearm.
  • (5) It is provided with advancement and practicability.
  • (6) It is provided with an industrial competitiveness.
  • It is of course to be understood that the embodiments described herein is merely illustrative of the principles of the invention and that a wide variety of modifications thereto may be effected by persons skilled in the art without departing from the spirit and scope of the invention as set forth in the following claims.

Claims (1)

1. A retractable inner barrel structure of a bolt mainly comprising a bolt handle, a flexible outer barrel, a retractable inner barrel, a pillar, a seat, a gun barrel shroud, a safety seat, and an adjusting device, comprising the bolt handle is installed in a latching groove of the flexible outer barrel with a fixing pin and a spring, and is passed through a gliding groove of a gun barrel, so as to be fixed into a restraining part of the gliding groove upon pulling back the flexible outer barrel; the retractable inner barrel being located inside the flexible outer barrel, and racks being located at two sides of the retractable inner barrel, with a spring for fixing the gun barrel shroud mounted on one of the racks; the pillar and the seat being located inside the retractable inner barrel; the gun barrel shroud being provided with a latching groove which is corresponding to a latching piece latched on the safety seat, and the adjusting device being located inside the gun barrel shroud and a poking switch for adjusting a trajectory being located on the adjusting device.
US11/177,421 2005-07-11 2005-07-11 Retractable inner barrel structure of a bolt Abandoned US20070006720A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US11/177,421 US20070006720A1 (en) 2005-07-11 2005-07-11 Retractable inner barrel structure of a bolt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/177,421 US20070006720A1 (en) 2005-07-11 2005-07-11 Retractable inner barrel structure of a bolt

Publications (1)

Publication Number Publication Date
US20070006720A1 true US20070006720A1 (en) 2007-01-11

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US11/177,421 Abandoned US20070006720A1 (en) 2005-07-11 2005-07-11 Retractable inner barrel structure of a bolt

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100300278A1 (en) * 2007-10-04 2010-12-02 Fabbrica D'armi Pietro Beretta S.P.A. Firearm with an improved breech bolt assembly
US20110036232A1 (en) * 2009-08-13 2011-02-17 Dublin Ethan A Charging mechanism for gas powered firearms
US20120137557A1 (en) * 2010-11-25 2012-06-07 Blaser Finanzholding Gmbh Bolt for a repeating firearm
US8567301B1 (en) * 2011-09-01 2013-10-29 Matthew A. Sharron Side offset charging handle
US20140260943A1 (en) * 2013-03-18 2014-09-18 Sarsilmaz Silah Sanayi A.S. Submachine gun
US20150260468A1 (en) * 2013-12-17 2015-09-17 Fostech Arms Llc Systems For Firearms
US20150362270A1 (en) * 2014-06-12 2015-12-17 Wilson Precision Arms, Inc. Firearm receiver with forward assist and bolt catch release
US10215513B2 (en) * 2015-12-18 2019-02-26 Jeffrey Scott Cross AR style receiver compatible with pistol magazines and cartridges
US10228201B2 (en) 2015-12-04 2019-03-12 Wiph, Llc Magazine and bolt release for firearm

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100300278A1 (en) * 2007-10-04 2010-12-02 Fabbrica D'armi Pietro Beretta S.P.A. Firearm with an improved breech bolt assembly
US7849777B1 (en) * 2007-10-04 2010-12-14 Fabbrica D'armi Pietro Beretta S.P.A. Firearm with an improved breech bolt assembly
RU2470246C2 (en) * 2007-10-04 2012-12-20 Фаббрика Д'арми Пьетро Беретта С.п.А. Gun with perfected bolt assembly
US20110036232A1 (en) * 2009-08-13 2011-02-17 Dublin Ethan A Charging mechanism for gas powered firearms
US8141474B2 (en) * 2009-08-13 2012-03-27 Dublin Ethan A Charging mechanism for gas powered firearms
US20120137557A1 (en) * 2010-11-25 2012-06-07 Blaser Finanzholding Gmbh Bolt for a repeating firearm
US8533986B2 (en) * 2010-11-25 2013-09-17 Blaser Finanzholding Gmb Bolt for a repeating firearm
US8567301B1 (en) * 2011-09-01 2013-10-29 Matthew A. Sharron Side offset charging handle
US20140260943A1 (en) * 2013-03-18 2014-09-18 Sarsilmaz Silah Sanayi A.S. Submachine gun
US20150260468A1 (en) * 2013-12-17 2015-09-17 Fostech Arms Llc Systems For Firearms
US9341420B2 (en) * 2013-12-17 2016-05-17 Fostech Mfg Llc Systems for firearms
US20150362270A1 (en) * 2014-06-12 2015-12-17 Wilson Precision Arms, Inc. Firearm receiver with forward assist and bolt catch release
US9557125B2 (en) * 2014-06-12 2017-01-31 Wiph, Llc Firearm receiver with forward assist and bolt catch release
US10113819B2 (en) 2014-06-12 2018-10-30 Wiph, Llc Firearm receiver with forward assist and bolt catch release
US10228201B2 (en) 2015-12-04 2019-03-12 Wiph, Llc Magazine and bolt release for firearm
US10215513B2 (en) * 2015-12-18 2019-02-26 Jeffrey Scott Cross AR style receiver compatible with pistol magazines and cartridges

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Legal Events

Date Code Title Description
AS Assignment

Owner name: GUAY GUAY TRADING CO., LTD., TAIWAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LIAO, YIN-HSI;REEL/FRAME:016780/0817

Effective date: 20050602

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION