US3580540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotatable multiport valve with fluid pressure controlled valve means
Assignee: ENERFLO Inc A CORP OF
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Filing: 1968-10-03
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Granted: 1971-05-25
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Expires: 1988-10-03
Abstract
Abstract A rotatable multiport valve structure which is susceptible of use, for example, in two, three, or four-way, and the like flow control valves, and includes a hollow valve body within which there is rotatably mounted a normally freely rotatable flow control gate means containing flow passages or channels which are selectively positionable in registration with body ports communicating with flow passages having connector members for connection with conduits. Sealing of the registered flow channels or passages at each port is accomplished by means of a fluid pressure actuated ring piston reciprocally motivated to seated and nonseated positions at its inner end with respect to an annular seat carried by the rotatable gate means, and wherein the piston in seated position acts to lockingly retain the gate means against movement.
Inventors
- 👤 Irving Joseph Heinen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:54
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/08; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86863; Y10T137/86871
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
203 words
A multiport valve, comprising: a. a hollow valve body having inlet and outlet ports therein, and at each port a cylindrical radially outwardly projecting neck portion; b. movable flow control means in said body including an annular seat movable into and out of axial alignment with said ports; c. fluid cylinder means surrounding each of said ports; d. a fluid pressure actuated ring piston in each cylinder means selectively urged into and out of sealed engagement with said axially aligned seat; e. a tubular connector member supported on said neck portion and having a cylindrical wall inwardly spaced within the neck portion and extending into said housing to provide a flow passage connection to the port, said wall and neck portion cooperating to provide an annular cavity for the cylinder means and associated ring piston at said port; f. an annular member in said cavity surrounding an inner end portion of said piston; g. an outer circumferential seal between said annular member and an adjacent inner wall surface of said body neck portion; h. an inner circumferential seal between said annular member and said piston inner end portion; and i. a circumferential seal between said piston inner end portion and said cylindrical wall.
Claim 2
Dependent Claim
203 words
A multiport valve, comprising: a. a hollow valve body having inlet and outlet ports therein, and at each port a cylindrical radially outwardly projecting neck portion; b. movable flow control means in said body including an annular seat movable into and out of axial alignment with said ports; c. fluid cylinder means surrounding each of said ports; d. a fluid pressure actuated ring piston in each cylinder means selectively urged into and out of sealed engagement with said axially aligned seat; e. a tubular connector member supported on said neck portion and having a cylindrical wall inwardly spaced within the neck portion and extending into said housing to provide a flow passage connection to the port, said wall and neck portion cooperating to provide an annular cavity for the cylinder means and associated ring piston at said port; f. an annular member in said cavity surrounding an inner end portion of said piston; g. an outer circumferential seal between said annular member and an adjacent inner wall surface of said body neck portion; h. an inner circumferential seal between said annular member and said piston inner end portion; and i. a circumferential seal between said piston inner end portion and said cylindrical wall.
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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |