Water closet valve assembly
US4114642A · kind A · utility
Inventor
Key dates
| Filing date | Feb 2, 1977 |
| Grant date | Sep 19, 1978 |
| Priority date | — |
| Expiry date | Feb 2, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7494
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Most valve assemblies used in water closet tanks are relatively bulky and often interfere with the operative action of the tank. Furthermore, such valve assemblies are noisy in operation and "wire drawing" effects cause considerable wear of the valve seat and/or valve. This device includes a flexible diaphragm engageable with an annular valve seat and acting as a valve between the water intake and the interior of the tank. A spherical segment cam is mounted in the assembly operatively connected to a float and connecting rod moving reciprocally. The cam operates a plug sliding reciprocally in the body of the valve assembly, said plug engaging the diaphragm and controlling the opening and closing of the diaphragm with the valve seat. The mechanical advantage of the spherical segment cam gives a positive closing action plug minimizing the "wire drawing" effect and the construction of the diaphragm and associated parts eliminates thumping and hissing during the closing action. An adjustable volume water trap feed is incorporated in the valve assembly so that the amount of water passing through to the water trap is adjustable within limits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.