Shower valve
US4877181A · kind A · utility
Inventor
Key dates
| Filing date | Aug 18, 1988 |
| Grant date | Oct 31, 1989 |
| Priority date | — |
| Expiry date | Aug 18, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86823
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A valve and thermostat assembly is disclosed for improved convenience and efficiency in showers. It comprises a thermostat controlled hot/cold water mixing valve combined with a flow valve. It provides a full range of graduated control for both temperature and flow rate, and maintains a set temperature when the flow rate is changed. Temperature can be preset, and the hot/cold ratio is automatically controlled. This avoids iterative manual adjustment, saving time and water. Flow can be temporarily shut off during a shower for economy without causing a cooler temperature at restart. It is safe, practical to manufacture, and installs with normal plumbing skills. It is not electric.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.