EP 0077929 A3 19831130 - DEVICE FOR AUTOMATICALLY OPENING A SLIDING-WEDGE BREECH-BLOCK OF A SEMI-AUTOMATIC GUN
Title (en)
DEVICE FOR AUTOMATICALLY OPENING A SLIDING-WEDGE BREECH-BLOCK OF A SEMI-AUTOMATIC GUN
Publication
Application
Priority
DE 3142457 A 19811027
Abstract (en)
[origin: US4462299A] A mechanism that automatically opens the breech block wedge on a semi-automatic weapon, especially a tank cannon with a training liner. Mounted on the breech of the weapon is an electromechanical drive mechanism that includes an electric motor with a drive shaft on which is mounted an energy-saving flywheel that can be connected through adjustable couplings and a reduction gear to an opener shaft on which is mounted an opener lever that shifts the breech block wedge into the open position when the shaft rotates. The flywheel is accelerated to a nominal speed when the couplings are disengaged. Electronic controls then engage the couplings for a predetermined amount of time and turn off the electric motor. Some of the energy of rotation of the flywheel is transferred to the opener lever. The couplings are then disengaged and the electric motor turned on again. The electronic controls are practically activated by the firing pulse and/or the actual firing procedure.
IPC 1-7
IPC 8 full level
F41A 5/32 (2006.01)
CPC (source: EP US)
F41A 5/32 (2013.01 - EP US)
Citation (search report)
- [X] US 2413241 A 19461224 - GUSTAVE MEJEAN JACQUES, et al
- [X] US 2397507 A 19460402 - ROBERTS JR FRED T
- [A] DE 2011237 A1 19710930
- [A] US 3537353 A 19701103 - NELSON ROBERT E
- [A] US 2802400 A 19570813 - EDMUND JAMES M
- [A] FR 502752 A 19200526 - SCHNEIDER & CIE [FR]
- [A] GB 356839 A 19310917 - VICKERS ARMSTRONGS LTD, et al
Designated contracting state (EPC)
BE CH FR GB IT LI
DOCDB simple family (publication)
EP 0077929 A2 19830504; EP 0077929 A3 19831130; EP 0077929 B1 19870107; DE 3142457 A1 19830505; GR 77348 B 19840911; US 4462299 A 19840731
DOCDB simple family (application)
EP 82108963 A 19820928; DE 3142457 A 19811027; GR 820169318 A 19820920; US 43650082 A 19821025