Plumbing control system and method for prisons
US4985944A · kind A · utility
33Cited by
10References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 20, 1989 |
| Grant date | Jan 22, 1991 |
| Priority date | — |
| Expiry date | Jul 20, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S4/15
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A flushing control system for prisons and the like includes a fixture and a source of water. A solenoid operated valve is interposed between the fixture and the source for regulating the flow of water to the fixture. A capacitance sensor is operably associated with the fixture for requesting operation of the valve. A control mechanism is operably associated with the capacitance sensor and with the valve for causing operation of the valve to be delayed for a selected period after the sensor has been operated and for limiting the number of operations of said valve per unit time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.