Non-explosive releasable coupling device
US7422403B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 2004 |
| Grant date | Sep 9, 2008 |
| Priority date | — |
| Expiry date | Oct 7, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S411/02
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A device and method for holding or clamping components together, and with the clamping being selectively loosened to permit the components to move through a predetermined distance without being fully released. A bolt has its head end attached to one component and its threaded end attached to the other component. A portion of the bolt's shank is formed with a necked-down portion. An actuator of shape memory alloy material is mounted about the bolt. When energized by heat, the actuator expands and exerts a great force which stretches the bolt, permanently deforming the bolt. This enables limited movement of the components while still restraining them from separating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.