Actuator
US5761960A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 11, 1996 |
| Grant date | Jun 9, 1998 |
| Priority date | — |
| Expiry date | Sep 11, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/44
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A motor, a ball screw shaft, etc. are accommodated within a frame that forms an outer frame. Direct-acting guides are provided on both sides of a groove-shaped opening defined in the frame. The ball screw shaft is centrally disposed within the frame. A table slides along the direct-acting guides under the action of rotation of the ball screw shaft. The ball screw shaft has ball-screw splines formed over its entire length and both ends thereof supported by the motor and a bearing. The center of rotation of the ball screw shaft is brought into alignment with the centers of rotation of the motor and the bearing by balls inserted into the ball-screw splines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.