Water cock with non-freezing valve
US4066090A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 26, 1976 |
| Grant date | Jan 3, 1978 |
| Priority date | — |
| Expiry date | Mar 26, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87378
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Water cock has non-freezing valve. Though temperature of the water flowing through the cock is lowered below the freezing point owing to the severe surrounding condition in the winter, the improved cock having a non-freezing valve does not stop its flowing of water. The cock has a thermo-element sensing the surrounding temperature and driving the non-freezing valve to shut and open according to the temperature. The thermo-element consists of a base portion containing heat-sensitive-material and a cylinder containing jelly-like material for transferring the expanding force of the heat-sensitive material to a shaft buried in the jelly-like material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.