Directional control system
US4306180A · kind A · utility
3Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 29, 1980 |
| Grant date | Dec 15, 1981 |
| Priority date | — |
| Expiry date | Feb 29, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P7/03
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit for controlling the drive direction of an electrically-driven vehicle, the circuit having a plurality of spring return input switches (20) each actuation of which changes the direction of the vehicle, via a flip-flop circuit (21), an amplifier (22), and a relay (13); the direction contactor coils (10, 11) of the vehicle being connected in alternative circuits through the contacts of the relay (13).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.