O-ring damped regulator
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United States of America Patent
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Nov 2, 1993
Grant Date -
N/A
app pub date -
Aug 17, 1992
filing date -
Aug 17, 1992
priority date (Note) -
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Abstract
A flow through fluid pressure regulator includes a spring biased plunger which is normally biased away from a plunger seat in the direction of fluid flow to provide maximum flow under normal conditions. In the event of a pressure surge, the movement of the plunger in the opposite direction to decrease flow is controlled by a damper. Specifically, the plunger is formed with a radially outwardly facing groove or damper chamber at its downstream end, and into which a resilient O-ring is loosely fitted. This downstream end of the plunger moves within a reduced diameter bore portion of the regulator housing which, in turn, communicates with a diaphragm chamber formed in a larger diameter portion of the housing. The diaphragm chamber surrounds the plunger and is further defined by a flexible diaphragm fixed at an inner radial edge to the plunger and at an outer radial edge to a stationary sleeve in the housing. The outer diameters of the radially outwardly extending flanges which form the O-ring groove or damper chamber, and the loose fit of the O-ring within the groove, permit water to flow past the groove and into the diaphragm chamber in a controlled manner. In an alternative arrangement, the damper chamber and O-ring are located in the housing surrounding the plunger.
First Claim
Family
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- NELSON IRRIGATION CORPORATION
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Meyer, Larry P | Walla Walla, WA | 18 | 587 |
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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