Pressure controller
US4523602A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 22, 1983 |
| Grant date | Jun 18, 1985 |
| Priority date | — |
| Expiry date | Jul 22, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86485
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Disclosed is a pressure controller for sensing changes in a service pressure and controlling a control pressure in response to such changes. The pressure controller includes a valve body having a control inlet and a bleed outlet with a passage therebetween. A valve seat is positioned in the passage and a valve member is reciprocatingly mounted in the valve body for movement between a closed position in engagement with the valve seat and an open position out of engagement with the valve seat. The controller includes a releasable latch for latching the valve member in the closed position. The controller includes a release mechanism for releasing the latch in response to changes in service pressure to allow the valve member to move to the open position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.