Shape memory wire latch mechanism

Details Shape memory wire latch mechanism Shape memory wire latch mechanism

1990-11-13

1992-07-14

Kundrat, Andrew V.

Joints and connections

Manually releaseable latch type

Having operating mechanism

403328, 403404, B25G 318

Patent

active

051297531

ABSTRACT:
A shape memory wire latch mechanism for releasably connecting two separable structural members. The latch mechanism utilizes the unique material properties of shape memory alloys as a means for releasing the structural members. The latch mechanism includes a pair of mating latch elements and a shape memory wire mounted on one of the latch elements. The mating latch elements attach to the two structural members and, when engaged, latch the structural members together. The shape memory wire disengages the latch elements when heated above its transition temperature, thus allowing the structural members to separate. The latch mechanism is particularly useful for securely stowing collapsible antennas and solar panels in a launch vehicle and then providing safe and reliable deployment of the antennas and solar panels once in space.

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patent: 4945727 (1990-08-01), Whitehead et al.

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