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    • 8. 发明专利
    • UNDERWATER EXPLOSIVE DEVICES
    • GB1502032A
    • 1978-02-22
    • GB1657576
    • 1976-04-23
    • AMADO LAGUNA DE RINS SA
    • F42C5/00F42C15/20F42C15/10F42C17/00
    • 1502032 Underwater explosive devices AMADO LAGUNA DE RINS SA 23 April 1976 [24 April 1975] 16575/76 Heading F3A Relates to an underwater explosive device which comprises a main charge, a priming charge surrounded by the main charge and a fuze operable by a predetermined pressure of water surrounding the device to detonate the priming charge. According to the invention the fuze comprises a spring-loaded detonator, means for retaining the detonator in an inoperative position spaced from the priming charge, means operable by a diaphragm exposed to the pressure of the surrounding water to release the detonator for operation by its spring, and safety means which prevent accidental operation of the device, and must be removed to render the device operative, the safety means comprising a first member which seals the fuze against the admission of water to the diaphragm and a second member which prevents the diaphragm from deflecting under pressure. In an embodiment water is prevented from entering the interior by screw cap 3 and the second safety device 37 has to be removed to permit diaphragm 6 to drop as hydrostatic pressure increases. As the diaphragm drops, piston 35 progressively overcomes the resistance of spring 15 and, as the piston descends, step 34 eventually passes balls 13; spring 15 is launched with its detonator 17 against percussion pin 21 and main charge 23a explodes after booster charge 22. To vary the depth at which explosion occurs the dstance between the bottom of piston 35 and its step 34 is altered, or spring 15 is altered in length or strength. The device can be neutralized by bores 9, 12 which are filled with water-soluble material, e.g. soap.