|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||F01B-029/10 F01B-029/00 F01B-007/20 F01B-007/00|
|미국특허분류(USC)||060/527; 060/528; 092/051; 092/052|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 8 인용 특허 : 6|
Linear actuators including coupled elongate members formed of shape memory alloys are provided. Members that lengthen when heated are coupled to members that shorten when heated such that stroke amplification gains are derived from each member. The members may be tubular and may be coaxially arranged for telescopic extension and collapse. Sections of a modular structure such as a space vehicle may be latched and clamped together for assembly or for docking by utilizing linear actuators having shape memory alloys that are actuated thermally.
That which is claimed: 1. A stroke-amplifying linear actuator comprising: an elongate first member comprising a proximal end and a first shape memory alloy, the first member configured to shorten by a first distance when the first shape memory alloy is heated; and an elongate second member having two opposing ends and comprising a second shape memory alloy, the second member configured to lengthen by a second distance when the second shape memory alloy is heated; wherein the second member is coupled to the first member such that at least one end of the ...