Torque and speed control methods and apparatus for pneumatic motors
US5479777A · kind A · utility
1Cited by
8References
4Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 15, 1994 |
| Grant date | Jan 2, 1996 |
| Priority date | — |
| Expiry date | Apr 15, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2211/8616
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Apparatus and methods to facilitate alteration of the torque and speed characteristics of a pneumatic motor to reduce start-up reaction torque and minimize run-on time after disconnection of the motor from a source of pressurized gas. A series connected accumulator and proportional gas flow/control/dump valve are inserted between a pressurized gas supply and a pneumatic motor, after which the accumulator volume is optimized by an iterative method to satisfactorily reduce transient motor start-up reaction torque while maintaining motor run-on time within an acceptable range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.