Patent · US Active

Payload launch lock mechanism

US8708322B2 · kind B2 · utility

3Cited by
14References
5Claims
0Family size

Assignee

Inventors

Key dates

Filing dateNov 5, 2010
Grant dateApr 29, 2014
Priority date—
Expiry dateAug 2, 2032

Classification

  • Technology area (CPC B)Performing Operations; Transporting
  • CPC primaryB64G1/642
  • WIPO fieldTransport
  • WIPO sectorMechanical engineering

Abstract

A payload launch lock mechanism includes a base, a preload clamp, a fastener, and a shape memory alloy (SMA) actuator. The preload clamp is configured to releasibly restrain a payload. The fastener extends, along an axis, through the preload clamp and into the base, and supplies a force to the preload clamp sufficient to restrain the payload. The SMA actuator is disposed between the base and the clamp. The SMA actuator is adapted to receive electrical current and is configured, upon receipt of the electrical current, to supply a force that causes the fastener to elongate without fracturing. The preload clamp, in response to the fastener elongation, either rotates or pivots to thereby release the payload.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.