| 摘要 |
PCT No. PCT/GB90/01095 Sec. 371 Date Mar. 15, 1991 Sec. 102(e) Date Mar. 15, 1991 PCT Filed Jul. 17, 1990 PCT Pub. No. WO91/01476 PCT Pub. Date Feb. 7, 1991.A locking device suitable for use in a gun to prevent unauthorized use of the gun includes a key operated lock (3) operable to expand a ring (8) into locking engagement with the gun chamber. In order to prevent removal of the device by applying force to the muzzle end of the device locking pins (14) are mounted in radial bores (11) to be driven radially outwardly by a tapered piston (18) if the piston is driven away from the muzzle end. An explosvie cartridge (23) is detonated by a firing pin (25) if force is applied to an end plate (26) thereby driving the piston in the desired manner. |
