Trigger mechanism for a water heater fail safe apparatus
US7703476B1 · kind B1 · utility
7Cited by
17References
7Claims
0Family size
Inventor
Key dates
| Filing date | Jul 2, 2007 |
| Grant date | Apr 27, 2010 |
| Priority date | — |
| Expiry date | Nov 17, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7397
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A trigger mechanism is provided for a water heater fail safe valve assembly which automatically shuts off the flow of water to a water heater when leakage of water from the water heater is detected in an underlying catch tray. The trigger mechanism includes a vertical housing having a drive rod which is upwardly urged by a spring and holds a resilient valve closing component. A cam member holds the drive rod down, representing the open state of the valve. An accumulation of water in the catch tray causes the cam member to release the drive rod to an upper position which closes the valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.