Bimetal valve
US4142676A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 5, 1977 |
| Grant date | Mar 6, 1979 |
| Priority date | — |
| Expiry date | Jul 5, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D23/08
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A bimetal valve is disclosed which is adapted to open and close a fluid flow conduit, or change flow paths from one to another due to the snapping action of bimetal discs in response to ambient temperature changes of the valve. In a first embodiment, there is used a combination of two bimetal discs and a valve seat cooperative therewith, thereby opening and closing flow of fluid between two ports. In a second embodiment, there is used a combination of two bimetal discs and a hold-down plate having a valve body thereon, thereby opening and closing flow of fluid between the two ports. In a third embodiment, there is used a combination of three bimetal discs, a hold-down portion, a stem portion and a valve body, thereby changing flow paths from one to another. In a fourth embodiment, there is used a combination of three bimetal discs, a partition plate, a stem portion secured to a valve body, thereby also changing fluid paths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.