Rotary actuator
US4313367A · kind A · utility
Inventor
Key dates
| Filing date | May 8, 1980 |
| Grant date | Feb 2, 1982 |
| Priority date | — |
| Expiry date | May 8, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C17/10
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A helical rotary actuator is provided with end bearings which overlie or wrap around the cylinder wherein the piston of the rotary helical actuator is linearly reciprocated. The wrapping around of the bearing reduces the length of the actuator and also increases the circumferential bearing surface for carrying higher radial loads within the confined length of the actuator. In one embodiment, inner and outer radial bearings are provided with the outer bearing wrapping around and the inner bearing supporting the output shaft of the actuator through a large diameter collar for greatly increasing the radial load-carrying capacity of the actuator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.