Ammunition and explosives – Igniting devices and systems
Patent
1974-06-11
1976-05-25
Tudor, Harold
Ammunition and explosives
Igniting devices and systems
102 73R, F42C 1529
Patent
active
039585115
ABSTRACT:
A setback lock apparatus is provided for use with an ordnance missile fuze. he lock includes a body having a planar top surface and a cavity extending in a generally downward direction into the body. The cavity has an opening at its top and is symmetrical about a linear axis perpendicular to the top planar surface. A first spring mass system comprising a coil spring and a steel ball atop the coil spring is situated within the cavity and centered about the linear axis. A second spring mass system comprising a second coil spring and a plurality of second steel balls atop the second coil spring is also situated within the cavity surrounding the first spring mass system. The spring mass systems are designed so that at low acceleration forces the first steel ball protrudes through the top planar surface and prevents alignment of the fuze, at high accelerational forces the second steel balls compress the second coil spring and move downward into a widened portion of the cavity, thus permitting the first steel ball to move downward compressing the first coil spring and to pass between them. As accelerational forces decrease, the first steel ball will be trapped in the bottom of the cavity, thus releasing the lock apparatus and permitting the alignment of the missile fuze.
REFERENCES:
patent: 2625881 (1953-01-01), Rabinow
patent: 2712284 (1955-07-01), Thomas et al.
patent: 2977882 (1961-04-01), Jasse
Horton Billy M.
Morrow Warren P.
Edelberg Nathan
Elbaum Saul
Gibson Robert P.
The United States of America as represented by the Secretary of
Tudor Harold
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