Patent US4370813A successfully refreshed from Google Patents.
Patent US1730808A successfully refreshed from Google Patents.
US4901976A
Expired / Lapsed
US
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Flow control valve
Assignee: SUDSMITH Inc
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Filing: 1989-08-28
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Granted: 1990-02-20
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Expires: 2009-08-28
Abstract
Abstract A fluid flow control valve for a fixture having a conduit for the passage of a fluid through the fixture comprises a valve rod that is manually slideable through a hole in the fixture to intercept the conduit at right angles. The rod has a plurality of various apertures through the diameter, each alignable with the conduit and sealed of by an O-ring around the rod to prevent leakage along the rod. In addition, novel saddle shaped O-rings closely surrounding the conduit and conforming to the arcuate surface of the valve rod prevent peripheral leakage around the surface of the valve rod in its "off" position.
Inventors
- 👤 Richard J. Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 23:03
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/02; E03C1/04; E03C1/046; Y; Y10; Y10S; Y10S251/00; Y10S251/90
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
135 words
In a fixture having a tubular conduit for the passage of a fluid, valve means for controlling the flow of the fluid comprising: a valve rod having an arcuate surface, said rod longitudinally movable through a tubular hole through the fixture to intercept the conduit at substantially right angles; at least one diametrical valving aperture through said valve rod, said aperture being alignable with said conduit; a pair of O-rings in grooves around said valve rod, said grooves located on each side of said aperture to prevent fluid leakage between said conduit and the exterior of said fixture; and first and second saddle O-rings surrounding said conduit and conforming to the arcuate surface of said valve rod, said saddle O-rings positioned at the junction of said conduit with opposite arcuate surfaces of said valve rod.
Claim 2
Dependent Claim
135 words
In a fixture having a tubular conduit for the passage of a fluid, valve means for controlling the flow of the fluid comprising: a valve rod having an arcuate surface, said rod longitudinally movable through a tubular hole through the fixture to intercept the conduit at substantially right angles; at least one diametrical valving aperture through said valve rod, said aperture being alignable with said conduit; a pair of O-rings in grooves around said valve rod, said grooves located on each side of said aperture to prevent fluid leakage between said conduit and the exterior of said fixture; and first and second saddle O-rings surrounding said conduit and conforming to the arcuate surface of said valve rod, said saddle O-rings positioned at the junction of said conduit with opposite arcuate surfaces of said valve rod.
Claim 3
Dependent Claim
59 words
The valve means claimed in claim 1 wherein said valve rod contains a plurality of diametrical valving apertures, said rod further containing at least one O-ring between the outermost of said plurality and the end of said rod for preventing fluid leakage from said fixture from between the surface of said rod and the wall of said tubular hole.
Claim 4
Dependent Claim
30 words
The valve means claimed in claim 2 wherein said valve rod contains a plurality of diametrical valving apertures, each separated by an O-ring for preventing fluid leakage between adjacent apertures.
Claim 5
Dependent Claim
21 words
The valve means claimed in claim 3 wherein said valve rod is manually adjustable through the tubular hole in the fixture.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-02-19 | 1993-08-21 | 1994-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-19 | 1997-08-21 | 1998-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-19 | 2001-08-21 | 2002-02-20 | $7700.00 | Window Closed / Lapsed |