US Patent No: 5,234,027
Number of patents in Portfolio can not be more than 2000
Fluid flow inhibitor for use in a static flow system device
Stats
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Aug 10, 1993
Issued date -
Aug 31, 1992
filing date -
07/938,735
serial no -
Expired
status
Importance
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Abstract
A flow restricting device is described which includes a conduit with a flow inhibitor therein. A plug stem is placed inside a passage in the inhibitor such that it can slide axially, while the head of the plug, which has a larger cross-sectional area than the passage, remains outside the passage. When the fluid pressure upstream of the flow inhibitor is greater than the fluid pressure downstream thereof, the head of the plug is forced against the face of the inhibitor and flow is restricted. To facilitate resetting of the inhibitor, the head allows a small amount of flow to pass to the downstream side, thereby equalizing the pressure across the device.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 4,310,017 Backflow check valve for use with IV administration sets | 59 | 1980 | |
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| 4,531,543 Uni-directional flow, fluid valve | 17 | 1984 | |
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| 4,393,751 Two hole hydraulic cushion valve | 13 | 1981 | |
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| 4,683,910 High-speed protective check valving for pressure transducers and the like | 9 | 1986 | |
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| 4,570,669 Simplified springless check valve | 15 | 1984 | |
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| 5,105,850 Fluid fuse valve | 8 | 1991 | |
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| 4,392,507 Two-stage pressure relief valve | 13 | 1981 | |