US4173328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
In-line shut-off valve
Assignee: BARCLAYSAMERICAN/BUSINESS CREDIT Inc A CORP OF CT
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Filing: 1978-05-05
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Granted: 1979-11-06
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Expires: 1998-05-05
Abstract
Abstract A positive-action non-leaking shut-off valve that requires minimal arcuate movement of the manual actuator from full-open to full-closed position is provided by three major components. A valve housing has a water-flow channel therethrough along its longitudinal axis and a cylindrical bore through said valve housing transversal to said water-flow channel. A lever-actuated valve shaft fits snugly into said bore. The valve shaft carries a plug therein that is centered for rotation about the centerline of the bore through the housing. The plug stoppers the water-flow channel when it is rotated against the openings that the water-flow channel makes with the cylindrical bore.
Inventors
- 👤 Richard S. Karbo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:33
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/04; F16K5/0435
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
208 words
An in-line shut-off valve comprising: a valve housing having a straight water flow channel therethrough and a cylindrical bore through the valve housing having its axis of symmetry perpendicular to the axis of symmetry of the water flow channel, said water flow channel terminating as two apertures in the wall of said cylindrical bore; a valve shaft placed for rotation about its axis of symmetry in said cylindrical bore, said valve shaft having a journal extending along a portion of said shaft and overlapping said apertures in the wall of said bore, said journal having a convex surface of curvature and an elongated concave cavity therein, opposite said convex surface, the cavity being equal in length along said shaft to the length of the journal, water flowing from one aperture to the other around the convex surface in the bore when the valve is open; and an elongated plug captured by the cavity in said journal, said plug having one side exposed and abutting the wall of said bore, the exposed surface of said plug being of a size to overlap one of the apertures in the wall of the cylindrical bore whereby rotation of said valve shaft causes said plug to slidably engage and seal this aperture.
Claim 2
Dependent Claim
208 words
An in-line shut-off valve comprising: a valve housing having a straight water flow channel therethrough and a cylindrical bore through the valve housing having its axis of symmetry perpendicular to the axis of symmetry of the water flow channel, said water flow channel terminating as two apertures in the wall of said cylindrical bore; a valve shaft placed for rotation about its axis of symmetry in said cylindrical bore, said valve shaft having a journal extending along a portion of said shaft and overlapping said apertures in the wall of said bore, said journal having a convex surface of curvature and an elongated concave cavity therein, opposite said convex surface, the cavity being equal in length along said shaft to the length of the journal, water flowing from one aperture to the other around the convex surface in the bore when the valve is open; and an elongated plug captured by the cavity in said journal, said plug having one side exposed and abutting the wall of said bore, the exposed surface of said plug being of a size to overlap one of the apertures in the wall of the cylindrical bore whereby rotation of said valve shaft causes said plug to slidably engage and seal this aperture.
Claim 3
Dependent Claim
51 words
The shut-off valve of claim 1 further comprising a cam-shaped lever fixedly attached at its smaller curved end to one end of said valve shaft, said lever having a gripping surface attached to its larger curved end, said gripping surface lying in a plane perpendicular to the plane of said lever.
Claim 4
Dependent Claim
32 words
The shut-off valve of claim 2 wherein the gripping surface of said lever conforms to the curvature of the larger end of said lever, the surface thereof being serrated to facilitate gripping.
Claim 5
Dependent Claim
67 words
The shut-off valve of claim 1 wherein said valve shaft includes a pair of grooves around its circumference at opposite ends of said shaft; and a pair of "O" ring seals, one located in each groove on said valve shaft, said "O" ring seals engaging the wall of said cylindrical bore thereby forming a waterproof seal between the valve shaft and the wall of the cylindrical bore.
Claim 6
Dependent Claim
52 words
The shut-off valve of claim 4 further comprising an additional groove on the valve shaft at the end thereof opposite the end fastened to said lever; and a washer which fits over the end of said shaft and is captured by the additional groove to maintain said shaft in the cylindrical bore.
Claim 7
Dependent Claim
14 words
The shut-off valve of claim 1 wherein said elongated plug has a hollow core.
Claim 8
Dependent Claim
22 words
The shut-off valve of claim 6 wherein said elongated plug is cylindrical prior to being inserted into the cavity in said journal.
Claim 9
Dependent Claim
22 words
The shut-off valve of claim 1 wherein said elongated plug is cylindrical prior to being inserted into the cavity in said journal.
Claim 10
Dependent Claim
51 words
The shut-off valve of claim 1 wherein the flow channel in said valve housing terminates as an inlet aperture and an outlet aperture in the wall of said cylindrical bore, and said outlet aperture comprises a pair of independent flow channels located side by side and defining a rib means therebetween.
Claim 11
Dependent Claim
62 words
The shut-off valve of claim 9 further comprising a protruding ridge element attached to the surface of the valve shaft at the end thereof to which said lever is fixedly attached, said protruding ridge element located to permit the valve shaft to be rotated in a defined arc whereby said elongated plug only slidably engages the outlet aperture in said cylindrical bore.
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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) | 1982-11-05 | 1983-05-07 | 1983-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-05 | 1987-05-07 | 1987-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-05 | 1991-05-07 | 1991-11-06 | $7700.00 | Window Closed / Lapsed |