US3721268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiport valve with rotatable cover
Assignee: Hayward Industries Inc
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Filing: 1970-12-03
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Granted: 1973-03-20
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Expires: 1990-12-03
Abstract
Abstract A multiport valve is provided having a valve body and a manually rotatable cover mounted on the body for selectively directing fluid flow among a plurality of influent and effluent lines. A valve seat comprising a unitary resilient seal ring is disposed between the rotatable cover and the valve body to prevent internal and external leakage therebetween during rotation of the valve cover and in the selected position.
Inventors
- 👤 G Erlich
- 👤 M Lerner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:38
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/06; F16K11/072; F16K11/074; F16K11/0743; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86863
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
158 words
A multiport valve for selectively directing fluid flow among a plurality of influent and effluent lines connected thereto, comprising a valve body having a plurality of fluid ports, and an array of corresponding individual flow chambers in fluid communication with the ports; a rotatable valve cover to enclose the valve body having at least one flow passage formed therein, said cover being axially movable between an unseated position, which facilitates rotational movement on the valve body in close juxtaposition to the array of flow chambers, to select at least two flow chambers for interconnection via the flow passage, and a seated position, in which the flow passage interconnects the selected flow chambers for flow between their corresponding ports; and a resilient unitary seal ring for sealing the cover in the selected position, disposed as a valve seat between the cover and the valve body and surrounding each flow chamber in the array to prevent internal and external leakage.
Claim 2
Dependent Claim
158 words
A multiport valve for selectively directing fluid flow among a plurality of influent and effluent lines connected thereto, comprising a valve body having a plurality of fluid ports, and an array of corresponding individual flow chambers in fluid communication with the ports; a rotatable valve cover to enclose the valve body having at least one flow passage formed therein, said cover being axially movable between an unseated position, which facilitates rotational movement on the valve body in close juxtaposition to the array of flow chambers, to select at least two flow chambers for interconnection via the flow passage, and a seated position, in which the flow passage interconnects the selected flow chambers for flow between their corresponding ports; and a resilient unitary seal ring for sealing the cover in the selected position, disposed as a valve seat between the cover and the valve body and surrounding each flow chamber in the array to prevent internal and external leakage.
Claim 3
Dependent Claim
22 words
A multiport valve in accordance with claim 1, in which the valve body and the valve cover are molded from plastic material.
Claim 4
Dependent Claim
79 words
A multiport valve in accordance with claim 1, further comprising locking means movable between locked and unlocked positions disposed on the exterior of the cover to secure the cover in the seated position upon the seal ring to form a fluid-tight seal therewith in the locked position, and to permit the internal pressure to axially lift the cover from the seat to the unseated position to facilitate rotation of the cover to another valve position in the unlocked position.
Claim 5
Dependent Claim
33 words
A multiport valve in accordance with claim 3, in which a peripheral edge of the seal ring is adapted to sealably engage the valve cover to prevent external leakage in the unlocked position.
Claim 6
Dependent Claim
42 words
A multiport valve in accordance with claim 1, in which the valve body has a continuous upstanding lip surrounding each flow chamber; and the unitary seal ring has a corresponding continuous groove adapted to sealably engage the lip in the valve body.
Claim 7
Dependent Claim
22 words
A multiport valve in accordance with claim 5, in which the unitary seal ring is secured in place by a flexible adhesive.
Claim 8
Dependent Claim
64 words
A multiport valve in accordance with claim 5, in which the unitary seal ring is a molded one piece gasket of a resilient material having a seating surface which contacts and is compressed by the cover in its seated position, and a continuous peripheral lip extending from the outer edge which sealably engages the valve cover to prevent external leakage in the seated position.
Claim 9
Dependent Claim
19 words
A multiport valve in accordance with claim 7, in which the seal ring is formed from high durometer elastomer.
Claim 10
Dependent Claim
40 words
A multiport valve in accordance with claim 7, in which the peripheral lip of the unitary seal ring is a flange outwardly and upwardly extending at an angle of about 100* to about 170* with respect to the seating surface.
Claim 11
Dependent Claim
17 words
A multiport valve in accordance with claim 9, in which the flange has a substantially rectangular cross-section.
Claim 12
Dependent Claim
17 words
A multiport valve in accordance with claim 9, in which the flange has a substantially circular cross-section.
Claim 13
Dependent Claim
69 words
A multiport valve in accordance with claim 1, in which the cover is substantially hemispherical in shape and has a cylindrical skirt which engages a corresponding cylindrical portion of the valve body, to guide the cover during axial and rotational movements; and a peripheral edge of the seal ring is adapted to sealably engage the interior surface of the cylindrical skirt to prevent external leakage in the unseated position.
Claim 14
Dependent Claim
25 words
A multiport valve in accordance with claim 12, further comprising an O-ring disposed on the exterior of the valve body sealably engaging the cylindrical skirt.
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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) | 1976-03-19 | 1976-09-18 | 1977-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-19 | 1980-09-18 | 1981-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-19 | 1984-09-18 | 1985-03-20 | $7700.00 | Window Closed / Lapsed |