Safety lock-out valve
US4000684A · kind A · utility
15Cited by
3References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 27, 1975 |
| Grant date | Jan 4, 1977 |
| Priority date | — |
| Expiry date | Mar 27, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87169
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A lock-out valve for pneumatic systems which provides the operator with mechanical means to exhaust the system and lock it out with a padlock or similar device and, when unlocked, provides a valve to control automatically the gradual reset of working cylinders and the filling of the system with operating pressure to a safe percentage of line pressure before full line flow is established.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.