Ignition voltage generator for projectile detonators and the lik

Details Ignition voltage generator for projectile detonators and the lik Ignition voltage generator for projectile detonators and the lik

1978-01-03

1979-02-13

Jordan, Charles T.

Ammunition and explosives

Igniting devices and systems

Ignition or detonation circuit

F42C 1102

Patent

active

041389468

ABSTRACT:
An ignition or firing voltage generator adapted to be actuated only proximate the peak of an inertial force and, in its equilibrium position will not emit a voltage even when subjected to hard shocks. A piezoceramic cell, as well as a solid body which is arranged axially adjacent thereto, are located within a preferably cylindrical support member which is axially displaceably guided within a tubularly-shaped component of an igniter housing, but in the initial position thereof is so restrained through the utilization of a securing element in the configuration of a shear element, spring fastener or the like, that its base is located at a defined spacing opposite a base plate of the igniter or detonator housing. A securing element of that type, without difficulty, may be so dimensioned that it will only first release the support member, when it is influenced by approximately the maximum inertial force. The base of the support member facing towards the base plate of the igniter housing, and/or the base plate of the igniter housing facing towards the base of the support member, may be slightly cambered or curved. A short-circuiting bridge which, in the initial position of the voltage generator, connects the two voltage poles of the piezoceramic cell and, in response to the axial displacement of the support member, will rupture at a notched location, so that in the equilibrium position, voltages generated in the cell through shock or vibration cannot lead to a faulty or unintended powering of the igniter or detonator fuse.

REFERENCES:
patent: 3738275 (1973-06-01), Schwartz et al.

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