Rotary actuator having cast piston and arcuate rack bearing
US4627331A · kind A · utility
4Cited by
9References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 31, 1985 |
| Grant date | Dec 9, 1986 |
| Priority date | — |
| Expiry date | May 31, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B15/065
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Rotary actuator of the rack and pinion type. The rotary actuator has a rack with a generally cylindrical outer surface having a recess which receives a rack bearing and an arcuate rack bearing which is received in that recess. The rack bearing has an arcuate, convex outer bearing surface and an arcuate concave inner surface which abuts the rack and the rack has a recessed outer surface which conforms in shape to the inner surface of the rack bearing. The rotary actuator may have two racks as shown. The rotary actuator has a pair of floating pistons associated with each rack.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.