公开(公告)号：US3620165A

公开(公告)日：1971-11-16

申请号：US3620165D

申请日：1969-09-10

申请人： HAMILTON WATCH CO

发明人： HENDERSON JOHN E

IPC分类号： F42C5/02

CPC分类号： F42C5/02

摘要： THE INVENTION RELATES TO BAROMETRIC FUZES FOR HIGH ALTITUDE ROCKETS AND PARTICULARLY TO A MECHANICAL SELF-COMPENSATING BAROMETRIC SENSING BELLOWS HAVING PRIOR TO LAUNCH, A FIXED END AND A FREE END, THE FREE END DESIGNED TO COMPENSATE FOR CHANGES IN ATMOSPHERIC PRESSURE. LANUCH ACCELERATION RELEASES A FIRING PIN WHICH FIRES A CHARGE DRIVING A PLUG INTO A MOVABLE SHAFT ATTACHED TO THE FREE END OF THE BELLOWS SENSIGN ELEMENT. THE PLUG FREEZES THE MOVEMENT OF THE SHAFT AND ESTABLISHES A REFERENCE BELLOWS LENGTH PROPORTIONAL TO THE AMBIENT ATMOSPHERIC PRESSURE IMMEDIATELY UPON LAUNCH. THE FIXED END IS THEN RELEASED TO SENSE ALTITUDE CHANGE. A TIME DELAY SAFETY SUBSEQUENTLY COACTS WITH THE BAROMETIC SENSING BELLOWS TO PREVENT FIRING AS THE ROCKET PASSES UPWARDLY THROUGH THE PRESELECTED FIRING ALTITUDES. THE SAFETY THEN RELEASES AN ALTITUDE SENSOR AT THE BELLOWS TO TRIGGER FUZE IGNITION ON THE DESCENT AT THE PRESELECTED ALTITUDE.

公开(公告)号：US3618522A

公开(公告)日：1971-11-09

申请号：US3618522D

申请日：1969-09-29

申请人： HAMILTON WATCH CO

发明人： HENDERSON JOHN E

IPC分类号： F42C14/02 ,  F42C15/184 ,  F42C15/36

CPC分类号： F42C15/36 ,  F42C14/02 ,  F42C15/184

摘要： This invention relates to a dual safety time delayed fuze, useful, for example, in conventional grenades, and particularly to a biased barrier between the pyrotechnic delay charge and the fuze ignitor charge. The barrier contains a flash-hole which is normally held out of alignment with the fuze powder train by a barrier latch. Upon ignition of the delayed charge, a heat motor, activated by the burning of the charge, expands against the barrier latch, displacing it, thereby allowing the biasing element to drive the barrier flash-hole into alignment with the delay and the ignitor. The barrier flash-hole may optionally contain a lead charge to insure ignition of the fuze.