Variable resistance control
US4110722A · kind A · utility
6Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 18, 1977 |
| Grant date | Aug 29, 1978 |
| Priority date | — |
| Expiry date | Jul 18, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01C10/34
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A variable resistance control having a clutch to prevent overdriving of a contactor relative to a resistance element. A driving member is rotatably and coaxially secured to a driven member in fixed relationship with the contactor. Knurled clutch faces formed on the driving member and the driven member are configured to permit sliding movement between the clutch faces when the driven member has reached its limit of travel and rotation of the driving member is continued.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.