Spring return for motor driven loads
US4771643A · kind A · utility
15Cited by
16References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 13, 1982 |
| Grant date | Sep 20, 1988 |
| Priority date | — |
| Expiry date | May 13, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/32271
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A load return mechanism is provided having an actuator for driving a load, a load adapted to be driven by the actuator, a first lever driven by the actuator, a second lever attached to the load, and an apparatus for locking the two levers together so that the load can be driven by the actuator and for unlocking the two levers to return the load to a predetermined position upon power interruption.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.