Electric Actuator
US5637940A · kind A · utility
26Cited by
15References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 3, 1995 |
| Grant date | Jun 10, 1997 |
| Priority date | — |
| Expiry date | Apr 3, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/18648
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor is integrally mounted on one end of a ball screw over which an engaging block is threaded, and an encoder is integrally mounted on the other end of the ball screw for detecting the rotational speed or angular displacement of the motor. The motor, the ball screw, and the encoder are combined into a unitized assembly as a drive unit. The motor and the encoder are positioned on respective steps of a frame, and detachably fastened to the frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.