US3610285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sliding valve
Assignee: Schrader Automotive Inc
•
Filing: 1969-12-11
•
Granted: 1971-10-05
•
Expires: 1989-12-11
Abstract
Abstract A sliding valve has a plastic valve element which has a working face, this face only engaging the housing adjacent the ports. The face of the element has legs extending longitudinally of the valve and nonaligned with the valve opening so that if tipping of the valve element occurs, it will not result in the catching of the leading edge of the valve element in the valve openings and the nonfunctioning of the valve.
Inventors
- 👤 Charles Passaggio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:04
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/06; F16K11/065; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86622; Y10T137/8663
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
164 words
A sliding valve comprising a. a hollow housing having spaced ports extending through the periphery thereof; b. a liner in the housing having spaced openings aligned in a valve operating zone extending longitudinally of the liner, the openings being in communication respectively with the ports; c. a one-piece valve element comprising a block of resilient plastic having a face slidably engaging the liner in the zone and conforming there to the shape of the liner, the face having a recess therein large enough to cover two adjacent of said openings, the each end of the face having at least one linerengaging leg extending longitudinally of the liner a short distance beyond the face and being in nonalignment with the openings to avoid the tipping of the valve element and the binding of the end edge of the face in the openings; and d. means to move the valve element longitudinally of the liner and housing to alter the port communication pattern of the valve.
Claim 2
Dependent Claim
164 words
A sliding valve comprising a. a hollow housing having spaced ports extending through the periphery thereof; b. a liner in the housing having spaced openings aligned in a valve operating zone extending longitudinally of the liner, the openings being in communication respectively with the ports; c. a one-piece valve element comprising a block of resilient plastic having a face slidably engaging the liner in the zone and conforming there to the shape of the liner, the face having a recess therein large enough to cover two adjacent of said openings, the each end of the face having at least one linerengaging leg extending longitudinally of the liner a short distance beyond the face and being in nonalignment with the openings to avoid the tipping of the valve element and the binding of the end edge of the face in the openings; and d. means to move the valve element longitudinally of the liner and housing to alter the port communication pattern of the valve.
Claim 3
Dependent Claim
27 words
A sliding valve as described in claim 1 wherein spring means is provided in the housing to engage the valve element and urge it against the liner.
References Cited (Backward Citations)
US1189722A
Cited
US2701704A
Cited
DE939609C
Cited
US2998828A
Cited
US3227180A
Cited
US3349800A
Cited
US3303853A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |