US3753569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure valve for fluids
Assignee: Individual
•
Filing: 1971-08-09
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Granted: 1973-08-21
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Expires: 1991-08-09
Abstract
Abstract In a pressure valve improved sealing means are provided by a collar that is formed integrally with the valve shaft, the collar having two transverse, axially spaced apart surfaces that are smooth and parallel with respect to each other. The first one of a first pair of frusto-conical gaskets are secured to the shaft for rotation together therewith and in abutment with one of the transverse surfaces of the collar. The second one of the first pair of frusto-conical gaskets is secured internally of the sleeve in which the valve shaft is mounted. The inclined surfaces of the first pair of frusto-conical gaskets are in sliding contact with each other. A second pair of frusto-conical gaskets is positioned, in a similar manner on the opposite transverse surface of the valve collar. As with the first pair of frustoconical gaskets, the second pair is secured respectively to the shaft and to the body of the valve. The inclined surfaces of the second pair of frusto-conical gaskets are also in sliding contact with each other. In the embodiment illustrated in the drawing the inclined surfaces of each pair of gaskets is at an equal and opposite angle to the other. Preferably the gaskets are made of a low friction, resilient material.
Inventors
- 👤 A Bonomi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:21
CPC Classifications
F; F16; F16K; F16K41/00; F16K41/02; F16K41/023; F16K41/026; F16K5/00; F16K5/06; F16K5/0663; F16K5/0694
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
267 words
In a pressure valve for fluids, the valve being of the type that includes a handle and a sleeve, a shaft on the handle, the shaft being positioned within the sleeve, improved sealing means comprising, in combination therewith: a. a collar integral with said shaft, said collar including a pair of smooth surfaces that are positioned in space apart, parellel planes that are perpendicular to the axis of the shaft; b. a first pair of frusto-conical gaskets telescoped one into the other, the inner one of said first pair of gaskets being secured to the shaft for rotation together therewith and also in abutment with one of said pair of surfaces of said collar, the outer one of said first pair of gaskets being rigidly secured to the inner surface of the sleeve and also in abutment with a transverse wall thereof, the inclined surfaces of said first pair of frusto-conical gaskets being at substantially the same angle and in sliding contact with each other; and c. a second pair of frusto-conical gaskets telescoped one into the other, the inner one of said second pair of gaskets being secured to the shaft for rotation together therewith and also in abutment with the other one of said pair of surfaces of said collar, the outer one of said second pair of gaskets being rigidly secured to the inner surface of the sleeve, and also in abutment with the inner end wall of the threaded coupling, the inclined surfaces of said second pair of frusto-conical gaskets being at substantially the same angle and in sliding contact with each other.
Claim 2
Dependent Claim
267 words
In a pressure valve for fluids, the valve being of the type that includes a handle and a sleeve, a shaft on the handle, the shaft being positioned within the sleeve, improved sealing means comprising, in combination therewith: a. a collar integral with said shaft, said collar including a pair of smooth surfaces that are positioned in space apart, parellel planes that are perpendicular to the axis of the shaft; b. a first pair of frusto-conical gaskets telescoped one into the other, the inner one of said first pair of gaskets being secured to the shaft for rotation together therewith and also in abutment with one of said pair of surfaces of said collar, the outer one of said first pair of gaskets being rigidly secured to the inner surface of the sleeve and also in abutment with a transverse wall thereof, the inclined surfaces of said first pair of frusto-conical gaskets being at substantially the same angle and in sliding contact with each other; and c. a second pair of frusto-conical gaskets telescoped one into the other, the inner one of said second pair of gaskets being secured to the shaft for rotation together therewith and also in abutment with the other one of said pair of surfaces of said collar, the outer one of said second pair of gaskets being rigidly secured to the inner surface of the sleeve, and also in abutment with the inner end wall of the threaded coupling, the inclined surfaces of said second pair of frusto-conical gaskets being at substantially the same angle and in sliding contact with each other.
Claim 3
Dependent Claim
38 words
The improved sealing means in accordance with claim 1 wherein the inclined surfaces of said first pair of frusto-conical gaskets are at an opposite angle with respect to the inclined surfaces of said second pair of frusto-conical gaskets.
Claim 4
Dependent Claim
40 words
The improved sealing means in accordance with claim 1 wherein the inclined surfacse of said first pair of frusto-conical gaskets are at an equal and opposite angle with respct to the inclined surfaces of said second pair of frusto-conical gaskets.
Claim 5
Dependent Claim
36 words
The improved sealing means in accordance with claim 1 wherein at least the inclined surfaces of said first and said second pair of frustoconical gaskets are made of plastic to provide a minimum of friction therebetween.
Claim 6
Dependent Claim
30 words
The improved sealing means in accordance with claim 1 wherein said first and said second pair of frusto-conical gaskets are made of plastic to provide a minimum of friction therebetween.
Claim 7
Dependent Claim
24 words
The improved sealing means in accordance with claim 1 wherein said first and second pair of frusto-conical gaskets are made of a resilient material.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-20 | 1977-02-19 | 1977-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-20 | 1981-02-19 | 1981-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-20 | 1985-02-19 | 1985-08-21 | $7700.00 | Window Closed / Lapsed |