Expansible chamber motor with snap-acting valve
US4879943A · kind A · utility
6Cited by
6References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 17, 1988 |
| Grant date | Nov 14, 1989 |
| Priority date | — |
| Expiry date | May 17, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L21/04
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
This invention relates to an air motor having a snap-acting overcentering spring mechanism for snapping the valving of the air motor between first and second positions as the piston completes each stroke in the cylinder to ensure reliable stall-free operation of the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.