Pressure regulator
US5694975A · kind A · utility
Inventor
Key dates
| Filing date | Jul 28, 1995 |
| Grant date | Dec 9, 1997 |
| Priority date | — |
| Expiry date | Jul 28, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7827
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A pressure regulator includes a housing having a chamber that receives a pressure responsive member 30. The pressure responsive member 30 includes an internal charge 90 that allows a movable portion 68 of the regulator to react in response to pressure differentials. A preferred embodiment of the regulator includes a dampening member defined by an o-ring 82 that exerts a drag on the pressure responsive member 30 to address oscillations associated with high flow rates. The dampening force can be varied according to the subject invention. Moreover, a normally planar poppet retaining member reduces manufacturing costs of the regulator and allows for a highly polished surface to address concerns with impurities. A biasing arrangement 120 is also incorporated into the regulator to assure that the poppet 68 seals against the valve seat 70 if the internal pressure charge of the regulator is lost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.