Pushbutton activated water pressure balanced mixing valve
US5492149A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 1995 |
| Grant date | Feb 20, 1996 |
| Priority date | — |
| Expiry date | Mar 20, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86879
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A pushbutton activated water pressure balanced mixing valve for faucets and shower/tub discharge controls includes a housing, a valve sleeve having hot and cold water inlets and a mixed water discharge and a valve member. The valve member has a hot water passage communicable with the sleeve hot water inlets and the sleeve mixed water discharge and a cold water passage communicable With the sleeve cold water inlet and the sleeve mixed water discharge. The housing has an outlet connected to the sleeve mixed water discharge. The valve member has generally equal pressure balancing surfaces and there is a passage in the housing connected to the sleeve discharge and to each of the pressure balancing surfaces for applying water pressure onto the surfaces for causing water temperature modulation movement of the valve member within the sleeve. There is also a passage connecting each of the pressure balancing surfaces with the housing outlet. There are manually operable check valves in each of the passages connecting the pressure balancing surfaces and the housing outlets. Operation of one of the check valves reduces the water pressure applied to one of the pressure balancing surfaces causin…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.