Quick-return electro-mechanical actuator
US6677844B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 2002 |
| Grant date | Jan 13, 2004 |
| Priority date | — |
| Expiry date | Oct 21, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/7062
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A quick-return electro-mechanical actuator (20) broadly includes a cocking solenoid (21) and a holding solenoid (22). Each of the solenoids has an armature (24, 31) and a rod (26, 33). The rods are adapted to contact one another when the actuator is energized. However, after the second rod has been moved to its extended position, the cocking coil is de-energized. The mass of the first rod and first armature is thereafter uncoupled and separated from the mass of the second rod and second armature such that when the second coil is subsequently de-energized, a spring (35) will expand to quickly move the second rod from its extended position to its retracted position
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.