Patent US3640310A successfully refreshed from Google Patents.
US3640310A
Expired / Lapsed
US
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Multiport valve
Assignee: Hayward Industries Inc
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Filing: 1969-06-26
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Granted: 1972-02-08
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Expires: 1989-06-26
Abstract
Abstract A multiport valve is provided having a manually operated rotor for selectively directing the flow from an inlet port to a desired outlet port. A high-pressure inlet port is positioned upstream of the rotor so that the inlet pressure biases the rotor against the seat to prevent the leakage of fluid in the selected position. The valve seat is a unitary resilient seal which is disposed within a groove surrounding the entrance portion of each outlet port. The unitary seal effectively prevents leakage by utilizing a raised seating portion to seal against the rotor and a dovetail lower portion to seal against the sides of the groove.
Inventors
- 👤 Giora Erlich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:30
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/06; F16K11/072; F16K11/074; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86863
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
234 words
A multiport valve for selectively directing fluid flow among a plurality of influent and effluent lines connected thereto, comprising a unitary valve body having an open central portion, at least one high-pressure inlet port in direct fluid communication with the open central portion, a plurality of low pressure ports, and an array of corresponding individual flow passages disposed at one end of the open central portion in fluid communication with the low pressure ports; a manually operable valve rotor in the form of a disc having at least one flow opening therethrough, and disposed for rotational movement within the open central portion of the valve body, between the line of flow from the high-pressure to the low-pressure ports and in close juxtaposition to the array of flow passages, to selectively direct the flow from the high pressure inlet port to at least one low-pressure port via a flow passage; and a unitary gasket disc having apertures therethrough located in positions corresponding to the flow openings in the rotor and the flow passages in the valve body for fluid flow connection therebetween in selected positions of the rotor, and formed of an abrasion resistant, resilient elastomer; for sealing the rotor in the selected positions, disposed within the valve body as a valve seat only between the rotor and the valve body surrounding the entry to each flow passage in the array to prevent leakage therebetween.
Claim 2
Dependent Claim
234 words
A multiport valve for selectively directing fluid flow among a plurality of influent and effluent lines connected thereto, comprising a unitary valve body having an open central portion, at least one high-pressure inlet port in direct fluid communication with the open central portion, a plurality of low pressure ports, and an array of corresponding individual flow passages disposed at one end of the open central portion in fluid communication with the low pressure ports; a manually operable valve rotor in the form of a disc having at least one flow opening therethrough, and disposed for rotational movement within the open central portion of the valve body, between the line of flow from the high-pressure to the low-pressure ports and in close juxtaposition to the array of flow passages, to selectively direct the flow from the high pressure inlet port to at least one low-pressure port via a flow passage; and a unitary gasket disc having apertures therethrough located in positions corresponding to the flow openings in the rotor and the flow passages in the valve body for fluid flow connection therebetween in selected positions of the rotor, and formed of an abrasion resistant, resilient elastomer; for sealing the rotor in the selected positions, disposed within the valve body as a valve seat only between the rotor and the valve body surrounding the entry to each flow passage in the array to prevent leakage therebetween.
Claim 3
Dependent Claim
82 words
A multiport valve in accordance with claim 1, in which the rotor has a pressure-receiving surface on one side of the disc which is acted upon by the high-pressure flow from the high-pressure inlet port to bias the rotor into a seated position, and a seating surface sn the opposite side of the disc which contacts the unitary seal ring and forms a fluidtight seal therewith when the rotor is biased into a seated position by the high inlet pressure acting thereupon.
Claim 4
Dependent Claim
43 words
A multiport valve in accordance with claim 1, in which a removable valve cover is disposed in fluidtight engagement with the valve body to sealably enclose the open central portion thereof; said valve cover is removable without disconnecting any influent or effluent lines.
Claim 5
Dependent Claim
21 words
A multiport valve in accordance with claim 1, in which the unitary valve body is a casting molded from plastic material.
Claim 6
Dependent Claim
31 words
A multiport valve in accordance with claim 1, in which the unitary gasket for seating the rotor is disposed in a continuous groove surrounding each flow passage in the valve body.
Claim 7
Dependent Claim
33 words
A multiport valve in accordance with claim 5, in which the gasket has a raised sealing surface which contacts and is compressed by the rotor in its seated position in a line seal.
Claim 8
Dependent Claim
48 words
A multiport valve in accordance with claim 6, in which the gasket has a dovetail portion with flexible legs which are forcibly separated into fluidtight contact with the sides and/or bottom of the groove in the valve body when the raised sealing surface is compressed by the rotor.
Claim 9
Dependent Claim
22 words
A multiport valve in accordance with claim 7, in which the unitary gasket is secured within the groove by a flexible adhesive.
Claim 10
Dependent Claim
28 words
A multiport valve in accordance with claim 7, in which the groove is formed with a continuous overhanging lip on both sides to capture the unitary gasket therein.
Claim 11
Dependent Claim
76 words
A multiport valve in accordance with claim 7, in which the unitary gasket is formed having a plurality of triangular shaped ribs which extenD along the entire periphery on both sides of the gasket; said ribs being adapted to permit installation and compression of the gasket within the groove when the gasket is subjected to a compressive force, and to lock on the sides of the groove when the gasket is subjected to an upward force.
Claim 12
Dependent Claim
16 words
A multiport valve in accordance with claim 8, in which the gasket is formed from Neoprene.
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) | 1975-02-07 | 1975-08-09 | 1976-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-07 | 1979-08-09 | 1980-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-07 | 1983-08-09 | 1984-02-08 | $7700.00 | Window Closed / Lapsed |