H - Electricity – 01 – H
Patent
H - Electricity
01
H
H01H 79/00 (2006.01) H01H 61/01 (2006.01) H02H 3/20 (2006.01) H02H 7/18 (2006.01)
Patent
CA 2063977
A circuit bypass device (30) having terminals (70, 80) is connected to contacts (70, 80) of a cell (20) to provide a conductive path (40) in response to voltage excursion therebetween. Device (30) includes: a conductive shunt (40), coupled to contacts (70, 80), that is movable from a normally non-conductive position to a conductive position between terminals (70, 80); a detector (50), coupled to conductive shunt (40), for sensing voltage excursion beyond specified limits between contacts (70, 80); and an actuator (60) having a heat-to-recover shape memory metal alloy that is formed to contract when detector (50) senses the voltage excursion, for moving conductive shunt (40) from the non-conductive position to the conductive position. The formed alloy is preferably spring-shape which contracts translationally and torsionally.
Gowling Lafleur Henderson Llp
Space Systems/loral Inc.
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