Fail-safe actuator with fusible link
US4503675A · kind A · utility
8Cited by
7References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 26, 1982 |
| Grant date | Mar 12, 1985 |
| Priority date | — |
| Expiry date | Feb 26, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/1797
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An apparatus for moving a controlled member, as for example a valve, to a predetermined position in response to temperature conditions includes a bearing member which overcomes a force exerted by an energy storage device within a predetermined temperature range. The bearing member includes a fusible material which melts in another predetermined temperature range to enable the force exerted by the energy storage device to overcome the bearing member and to move the controlled member to a fail-safe position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.