Water shut-off valve
US4742841A · kind A · utility
12Cited by
4References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 10, 1987 |
| Grant date | May 10, 1988 |
| Priority date | — |
| Expiry date | Apr 10, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8158
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A coolant system and control valve used in a circuit for cooling spot welding tips. The control valve normally passes coolant to and from the tips. Should a break in the coolant flow occur because of a breakdown of one or more of the tips, the control valve will shift to close the normal coolant loop and divert coolant from a pressure source to a tank until a repair is made. A switch indicator can be utilized for visual observation of a break and also a flow indicator is provided on the valve body to indicate normal coolant flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.