Electromotive drive for a control element
US4997069A · kind A · utility
6Cited by
6References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 30, 1989 |
| Grant date | Mar 5, 1991 |
| Priority date | — |
| Expiry date | Aug 30, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19702
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
There is provided an electromotive drive for a control element, the overall drive is without self-inhibition, for which purpose its screw transmission has rolling elements in the thread, and the drive motor is a rotating field magnet. Provision is made for a freewheel clutch disposed between the drive motor and the screw transmission. A non-inhibiting reduction gear may be arranged between the freewheel clutch and the drive motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.