Method and apparatus for plug sensing
US3958163A · kind A · utility
13Cited by
5References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 20, 1974 |
| Grant date | May 18, 1976 |
| Priority date | — |
| Expiry date | Nov 20, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/72
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for sensing plugging of a DC electric motor comprising logic circuitry responsive to a direction change command for initiating a plugging signal and additional logic circuitry for maintaining said plugging signal as a function of the percentage on time of a variable time ratio switch supplying power to the motor. Inhibit circuitry is provided to override the plugging signal under operator selected conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.