Power-off hold element
US7305824B1 · kind B1 · utility
2Cited by
21References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 6, 2004 |
| Grant date | Dec 11, 2007 |
| Priority date | — |
| Expiry date | Dec 7, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B2200/77
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A power-off hold element for operating in cooperation with an actuator is disclosed. The power-off hold element comprises a material having selectively adjustable rigidity wherein a position or shape of said material is adjustable when energy is applied to increase the temperature of the material above a temperature where the material becomes flexible and the material is rigid in a position or shape when the temperature of the material decreases below the temperature where the material becomes flexible. Also disclosed is a process for operating a power-off hold element for operating in cooperation with an actuator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.