Leak detection system and check valve for use therein
US4410109A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 4, 1982 |
| Grant date | Oct 18, 1983 |
| Priority date | — |
| Expiry date | May 4, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7781
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The leak detection system includes a leak detection sensor for sensing the pressure of fluid product in a supply line and holding the flow rate of the fluid through the supply line to a value below a maximum when the sensed pressure is below a predetermined value. The sensor is connected to the supply line in proximity to a pump. A pressure responsive valve is connected in the supply line between the sensor and a dispensing nozzle for sensing pressure and stopping the flow of fluid product through the line when the pressure is below a minimum value. The pressure responsive valve allows the line pressure to build to a value sufficient to allow the sensor to complete its sensing cycle and permit full fluid flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.