Device depowering apparatus
US5008561A · kind A · utility
9Cited by
10References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 13, 1990 |
| Grant date | Apr 16, 1991 |
| Priority date | — |
| Expiry date | Mar 13, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B9/03
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A depowering apparatus for controlling selection and deselection of devices, such as a pair of torque motors, comprises two channels. Each channel has a normally open switch in series with a normally closed switch connecting a power supply line to the torque motor. A control circuit in each channel closes the normally open switch of that channel and opens the normally closed switch of the other channel in response to a channel select signal so as to ensure that each of the torque motors can be depowered to allow the other to take control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.