Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1990-10-02
1992-06-09
Gorski, Joseph M.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
29413, 294264, 295661, 403 28, 411390, B23P 1904, F16B 3500
Patent
active
051195550
ABSTRACT:
A non-explosive separation device for releasably holding together components of equipment or apparatus which are to be separated under controlled conditions. The separation device and method of operation includes a retaining element having a strain concentrated portion which completely cleaves when strained at a predetermined magnitude. Strain is applied to the retaining element by an actuating element which is comprised of a solid state phase change material having a shape memory. The actuating element is deformed to an armed shape at a temperature below the phase-change transition temperature. The device is activated by heating the actuating element through its transition temperature so that it recovers toward its memory shape. The retaining element is strained beyond its ultimate strength so that it cleaves at the strain concentrated portion. One embodiment of the invention provides a method for the non-destructive testing of the integrity and readiness of the separation device as well as a method of calibrating the release point of the device.
REFERENCES:
patent: 3408890 (1968-11-01), Bochman, Jr.
patent: 3454286 (1969-07-01), Anderson et al.
patent: 4485545 (1984-12-01), Caverly
Dungba Vo Peter
Gorski Joseph M.
TiNi Alloy Company
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