Safety pressure reducing regulator
US4349136A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 7, 1980 |
| Grant date | Sep 14, 1982 |
| Priority date | — |
| Expiry date | Feb 7, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7795
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A safety pressure reducing regulator for use in systems operable by pressurized gas incorporates multiple safety features which preclude excessive pressure buildup in the system and provide protection against catastrophic failures. The regulator includes primary and secondary regulator stages through which pressurized gas from a gas pressure source is supplied to a pressure control chamber which provides the operating pressure for the system. The primary regulator stage is designed to reduce the inlet gas pressure to an intermediate level. The secondary regulator stage is designed to automatically regulate the supply of the pressurized gas at the intermediate pressure to the pressure control chamber to maintain a desired operating pressure therein. A flexible diaphragm is normally disposed across the pressure control chamber which is adapted to function as a check valve to control communication between the secondary regulator stage and the pressure control chamber. A clamping piston provided with a central passage normally clamps the flexible diaphragm in place across the pressure control chamber. In the event of excess pressure buildup in the pressure control chamber, the piston u…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.