Operation confirmatory circuit for linear actuator
US4945295A · kind A · utility
0Cited by
7References
6Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Oct 4, 1988 |
| Grant date | Jul 31, 1990 |
| Priority date | — |
| Expiry date | Oct 4, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P7/03
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit for signaling an operator when a linear actuator, driven by a reversible direct current motor, has reached opposite end positions. Two normally closed series-connected switches which open at the respective positions and diodes, connected across each switch and to each other in opposition, stop the motor when the actuator reaches either position. A third switch and third diode cause a lamp to energize at one of the positions and remain energized until the actuator moves to the other position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.