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1. 发明专利

JPH08506653A 失效
公开(公告)号：JPH08506653A
公开(公告)日：1996-07-16
申请号：JP51125295
申请日：1994-10-06
IPC分类号： F41A3/26 , A61P15/02 , C07D409/12 , F16F15/073 , F41A3/54 , F41A3/64 , F41A3/66 , F41A3/72 , F41A3/78 , F41A3/82 , F41A7/02 , F41A9/32 , F41A9/33 , F41A17/42 , F41A19/30 , F41A19/31

2. 发明专利

JPH05203392A RE-POSITIONER OF RIFLE BOLT 失效
公开(公告)号：JPH05203392A
公开(公告)日：1993-08-10
申请号：JP16099292
申请日：1992-06-19
申请人： BENELLI ARMI SPA
发明人： SUKARAMUTSUSHI SERUJIO , BEERAADE PAORO , KARUDERI RORANDO
IPC分类号： F41A3/80 , F41A3/82 , F41A3/84 , F41A3/86
摘要： PURPOSE: To obtain a bolt repositioning device for firearms which enables not only the adaptation of a low-rigidity recoil spring suitable for the use of a relatively weak cartridge but also the operation of a bolt mechanism under the optimum conditions even in the use of the most powerful cartridge in a semiautomatic or fully automatic firearm. CONSTITUTION: In an semiautomatic firearm including a recoil spring 3 acting on a bolt for closing the breech after the ejection of a cartridge case 7, an auxiliary resilient member which corporate with the recoil spring 3 is provided, so that although a low-rigidity spring suitable for a weak cartridge is used, the weapon works correctly even when firing powerful cartridges. The device thus allows the use of a wider range of cartridges, strong or weak, and moreover, removal of undesirable recoiling. This further achieves an accurate operation and a simple and economical structure.

3. 发明专利

JP4689929B2 Recoil control mechanism for a weapon 有权
公开(公告)号：JP4689929B2
公开(公告)日：2011-06-01
申请号：JP2001563849
申请日：2001-03-02
申请人：ベイダー・プロプライエタリー・リミテッド
发明人：ギザ，リチャード
IPC分类号： F41A3/82 , F41A3/54 , F41A5/16 , F41A5/18 , F41A9/47 , F41A25/12
CPC分类号： F41A5/18 , F41A3/54 , F41A5/16 , F41A9/47

4. 发明专利

JP3238749B2 失效
公开(公告)号：JP3238749B2
公开(公告)日：2001-12-17
申请号：JP16099292
申请日：1992-06-19
IPC分类号： F41A3/80 , F41A3/82 , F41A3/84 , F41A3/86

5. 发明专利

JP2001272200A RECOIL AND COUNTERRECOIL MECHANISM FOR MACHINE GUN 失效
公开(公告)号：JP2001272200A
公开(公告)日：2001-10-05
申请号：JP2000086668
申请日：2000-03-27
申请人： JAPAN STEEL WORKS LTD
发明人： YOSHIMATSU MORIYOSHI
IPC分类号： F41A25/12 , F41A3/82
摘要： PROBLEM TO BE SOLVED: To shorten the overall length by employing three sliders and two springs. SOLUTION: In the inventive recoil and counterrecoil mechanism for a machine gun, a rod (6) secured to the gun carriage (5) is provided with three sliders (20, 21, 9) and first and second springs (13, 14) are provided between respective sliders (20, 21, 9). Rear seat energy is absorbed by means of the first and second sprigs (13, 14) and a counterrecoil braking action is obtained only by means of the second spring (14).

6. 发明专利

JP3103983B2 失效
公开(公告)号：JP3103983B2
公开(公告)日：2000-10-30
申请号：JP51125295
申请日：1994-10-06
IPC分类号： F41A3/26 , A61P15/02 , C07D409/12 , F16F15/073 , F41A3/54 , F41A3/64 , F41A3/66 , F41A3/72 , F41A3/78 , F41A3/82 , F41A7/02 , F41A9/32 , F41A9/33 , F41A17/42 , F41A19/30 , F41A19/31

7. 发明专利

JPS503598B1 失效
公开(公告)号：JPS503598B1
公开(公告)日：1975-02-06
申请号：JP12327073
申请日：1973-11-01
IPC分类号： F41A7/00 , F41A3/26 , F41A3/66 , F41A3/82 , F41A9/00 , F41A9/01 , F41A9/29 , F41A9/30 , F41A9/34 , F41A9/37 , F41A9/39 , F41A9/49 , F41A11/00 , F41A15/00 , F41A15/16 , F41A17/00 , F41A19/06 , F41A25/12 , F41D11/14
摘要： 1,200,847. Firearms. BREVETS AERO-MECANIQUES S.A. 16 July, 1968 [31 July, 1967], No. 33908/68. Heading F3C. An automatic or semi-automatic firearm comprises a substantially cylindrical breech mechanism 1 arranged to reciprocate in a breech case 2 which has, towards its rear end, a portion internally and externally of rectangular cross-section. A spent cartridge ejection opening 7 is provided in one, 3, of the small sides of the portion and the large sides are each provided with a cartridge introduction opening 8 which has two guide surfaces 42 for guiding the breech mechanism 1 and a counter recoil spring 10 in their movements. The four guide surfaces 42 are situated on a common cylinder of revolution whose axis is parallel to the axis of the firearm barrel 16. Two cartridge feed mechanisms (9, Figs. 2, 4, not shown) are mounted one on each side of the firearm one being moved into a cartridge feed position in which cartridges pass through the corresponding cartridge introduction opening 8 to be brought into the chamber 57 of the firearm by the breech mechanism 1 on its return to the firing position. In the construction shown, the breech mechanism 1 comprises a breechblock 11 locked by rotation, a casing 18 formed of two shells and slidable without rotation in the breechcase 2, and a damping device 19. A firing pin 21 within the breechblock 11 is connected to the casing 18 by a spindle 20. The ends of the spindle 20 each carry a roller which co-operates with a skew to effect rotation of the breechblock during its reciprocations (Fig. 4, not shown). The initial cocking mechanism comprises a chain actuated by a crank through a spindle 31. The breechblock 11 carries an extractor 35 and is provided diametrically opposite with a groove 36 for the passage of an ejector 33. The extractor 35 is maintained in position by a leaf-spring 37. The fastening and control of the feed mechanisms are arranged as in Specification 1,191,856 and the cartridge belt advancement mechanism in each feed mechanism may be of the type described in Specification 963,119. The drive of the feed mechanisms comprises a fork 89, one limb of which co-operates with a roller of a lever of the feed mechanism in the cartridge feed position while the other limb is dissociated from the equivalent lever of the other feed mechanism (Figs. 2, 4, not shown). The fork 89 reciprocates with the barrel 16 and sleeve 15 assembly, the movement of the fork being damped in the recoil movement by a piston assembly 99, 100, 105 working in a cylinder in the fork. The pistonrod 101 merely abuts a member 102 of the casing and thus the movement of the fork is not damped by this arrangement on its return stroke. The ejector 33 of the firearm has a cartridge striking surface 109 and a projection 112, the projection firstly urging the spent cartridge to pivot upwardly before the striking surface ejects the cartridge through the ejection opening 7. A spring-loaded sear 26 may be withdrawn and held out of the path of the breech mechanism 1 by cam 67. A damping spring 66 is also provided for the sear.

8. 发明专利

JP6708656B2 銃におけるボルトストップ緩衝装置有权
公开(公告)号：JP6708656B2
公开(公告)日：2020-06-10
申请号：JP2017545065
申请日：2015-10-16
IPC分类号： F41A9/62 , F41A3/42 , F41A3/82 , F41A17/36 , F41A17/40

9. 发明专利

JPS6438599A RECOIL DEVICE FOR FIREARM, BREECH BOLT OF WHICH IS RECIPROCATED 失效
公开(公告)号：JPS6438599A
公开(公告)日：1989-02-08
申请号：JP9579988
申请日：1988-04-20
申请人： JIYON RII ROISUTAA
发明人： JIYON RII ROISUTAA
IPC分类号： F41A19/06 , F41A3/82 , F41A5/00 , F41A7/00 , F41A9/01 , F41A9/30 , F41A9/38 , F41C3/00 , F41C7/00
摘要： PURPOSE: To retain a breech bolt at a closed position until a breech block can be opened safely and, moreover, to damp a force of reaction generated by explosion, by providing a primary recoil absorbing means which absorbs part of recoil energy consequent of firing of a firearm and a secondary recoil absorbing means which decreases the speed of retraction of the breech block in cooperation with the primary means and then increases the return speed thereof. CONSTITUTION: A primary recoil absorbing means 100 has a spring 100 biasing a breech block 44 to a closed position and absorbs part of recoil energy during a retraction stroke of the breech bolt due to firing of a firearm. A secondary recoil absorbing means 50 decreases the speed of the retraction of the breech block 44 from a breech block and springs out an empty cartridge case, cooperating with the primary recoil absorbing means, and then, in succession to the time of a standstill for reengagement, it increases the speed of return of the breech block 44, takes up a fresh bullet and sends it into a loading chamber 46. While the primary recoil spring 100 closes the breech bolt for a time enough for a muffle pressure to disperse to a prescribe level, besides, the residual pressure is selected to be sufficient for opening the breech bolt against a combined bias of two springs 74 and 100.

10. 发明专利

JPS62500397A 失效
公开(公告)号：JPS62500397A
公开(公告)日：1987-02-19
申请号：JP50463285
申请日：1985-09-28
IPC分类号： F41A5/00 , F41A3/78 , F41A3/82 , F41A5/02 , F41A5/08 , F41A13/00 , F41A21/00 , F41A25/12 , F41A25/22 , F41F20060101

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