Automatic mechanism for cut-off and drainage of under low-freezing ambient temperature conditions
US6374848B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Apr 15, 1999 |
| Grant date | Apr 23, 2002 |
| Priority date | — |
| Expiry date | Apr 15, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8671
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An automatic mechanism is provided for cutting-off water flow to a plumbing system of a house, an apartment, a business or the like, while at the same time draining water/plumbing systems when subjected to low/freezing ambient temperatures. The mechanism includes a valve body housing a reciprocal valve which is operative to place an inlet and an outlet in fluid communication while cutting off a drain port, and in a second position the inlet is closed and the outlet and the drain port are placed in fluid communication to drain the water system when the valve is shifted automatically under the influence of biasing means in reaction to low temperature sensing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.