Electrically controlled shutoff valve and use of the latter
US5107894A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 6, 1990 |
| Grant date | Apr 28, 1992 |
| Priority date | — |
| Expiry date | Nov 6, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87692
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The mixing fitting (10) has a shutoff valve (22) for hot water and a shutoff valve (24) for cold water. These shutoff valves (22, 24) are constructed as diaphragm valves and each have an auxiliary valve (62, 62') provided in the pilot control space (50). To operate these auxiliary valves (62, 62'), permanent magnets (76) are provided which can be swivelled about the axle (80') into and out of the range of action on the closure elements (64) of the auxiliary valves (62, 62'). To open the shutoff valves (22, 24), the swivel body (78) is swivelled by means of the drive (94) with the permanent magnets (76) into the region of the closure elements (64), by which means the latter are pulled toward the permanent magnets (76) with the auxiliary valve (62, 62') opening. The pressure in the pilot control space (50) drops and the shutoff valve (22, 24) is opened by the closure part (44) being lifted from the valve seat (40). If the permanent magnets (76) are again swivelled out of the range of action on the closure elements (64), the latter close the auxiliary valves (62, 62'), which results in the pressure in the pilot control space rising again due to the passage (52). The closure part (44) …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.