公开(公告)号：US09091252B2

公开(公告)日：2015-07-28

申请号：US13688863

申请日：2012-11-29

Applicant: GM Global Technology Operations LLC

Inventor： Vidyashankar R. Buravalla ,  Shivaram Ac ,  Ashish Khandelwal ,  Christopher B. Churchill

IPC: F03G7/06

CPC classification number: F03G7/065

Abstract: An actuator comprising an SMA element and a thermally responsive element that adjusts bias stress improves high ambient temperature operation.

Abstract translation: 包括SMA元件和调节偏压应力的热响应元件的致动器改善了高环境温度操作。

公开(公告)号：US09822551B2

公开(公告)日：2017-11-21

申请号：US14812666

申请日：2015-07-29

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Shivaram Ac ,  Vidyashankar R. Buravalla ,  Paul W. Alexander

IPC: F03G7/06 ,  E05B47/00 ,  E05B83/30

CPC classification number: E05B47/0009 ,  E05B83/30 ,  F03G7/065

Abstract: A device for cycling a component between a first condition and a second condition includes an element and a reset apparatus connected to and driven by the element. The element is formed from a shape memory alloy, wherein the alloy is transitionable between a martensite crystallographic phase and an austenite crystallographic phase in response to a thermal energy source. The apparatus is actuatable by the element from an initial state in which the alloy has the martensite phase and the component is in the first condition, to an actuated state in which the alloy has the austenite phase and the component is in the second condition. The apparatus is resettable from the actuated state to a reset state in which the alloy transitions from the austenite to the martensite phase while the component is in the first condition, and further resettable from the reset state to the initial state.