Time-control circuit for pneumatically operable devices
US5169480A · kind A · utility
16Cited by
6References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 8, 1990 |
| Grant date | Dec 8, 1992 |
| Priority date | — |
| Expiry date | Feb 8, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86413
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A timing control circuit for a pneumatically-operable device, which is manually actuable so as to provide fluid flow to a revervoir through means of a variable flow control valve and a line-pressure-operable, normally-open valve disposed within the primary fluid flow, is disclosed. The pressure operable valve is closed at a sensed line pressure so as to interrupt fluid flow to the tool so as to terminate an operating cycle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.