Pneumatic motor
US6431046B1 · kind B1 · utility
10Cited by
36References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 25, 2000 |
| Grant date | Aug 13, 2002 |
| Priority date | — |
| Expiry date | Dec 13, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86606
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A double acting pneumatic motor having a cylinder, a piston within the cylinder that divides the cylinder into two cavities that vary in volume with movement of the piston, a source of fluid under pressure, and a valve assembly for alternately directing fluid to one cavity while exhausting the other cavity to make the piston reciprocate. The valve assembly resides in a housing, and includes a cylindrical spool that moves axially between two positions with at least one enlarged diameter portion between smaller diameter portions at each end. The pneumatic motor may be provided with a cover for attenuating sound from the exhaust.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.