Shape memory alloy actuators

Details Shape memory alloy actuators Shape memory alloy actuators

2007-08-14

2007-08-14

Mullins, Burton (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Linear

C060S527000, C310S306000

Reexamination Certificate

active

10889814

ABSTRACT:
Linear actuators comprised of a plurality of geometric links connected together in displacement multiplied fashion by a plurality of SMA wires. The links may have a trigon or chevron configuration. The trigon links may be combined with a hexagonal or rhomboidal shaft to create a defined stacking pattern of links about the shaft. The shaft extends from the medial portion of the stack. Ohmic heating circuits connect to non-moving ends of SMA wires. Various groupings of links in parallel displacement are described.

REFERENCES:
patent: 1658669 (1928-02-01), Cohn et al.
patent: 5727391 (1998-03-01), Hayward et al.
patent: 6574958 (2003-06-01), MacGregor
patent: 7017345 (2006-03-01), Von Behrens et al.
patent: 2002/0113499 (2002-08-01), von Behrens et al.

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