Patent US3908700A successfully refreshed from Google Patents.
US3908700A
Expired / Lapsed
US
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Solenoid valve
Assignee: Jouvenel et Cordier SA
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Filing: 1974-05-03
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Granted: 1975-09-30
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Expires: 1994-05-03
Abstract
Abstract Solenoid valve of the type comprising a magnetic head supporting the solenoid, a body having fluid inlets and outlets formed therein, and a spring-urged magnetic core, this valve being characterized in that the magnetic yoke comprises a relatively narrow phase-shifting ring retained by an external sleeve.
Inventors
- 👤 Jean Debaye
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:48
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0603; F16K31/0624; F16K31/0627; F16K31/0606; F16K31/0675; H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/10; H01F7/12; H01F7/16; H01F7/1607; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86622
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
160 words
A solenoid electro-valve comprising: a valve body having therein a first valve seat separating a fluid inlet from a fluid outlet; a unitary magnetic head including a solenoid winding and a magnetic circuit, said head being attached to said valve body, said head forming a core receiving chamber with said valve body; a magnetic yoke extending through said head from exterior thereof to said chamber, said yoke having an axial passage extending therethrough and a second valve seat; a magnetic core positioned in said chamber and having thereon first and second valves for respective engagement with said first and second valve seats; spring means for normally urging said core to cause said first valve to close said first valve seat; a narrow phase-shifting ring means surrounding a portion of said magnetic yoke positioned completely interiorly of said head for introducing a magnetic phase shift in said magnetic circuit; and a magnetic sleeve retaining said ring means on said magnetic yoke.
Claim 2
Dependent Claim
160 words
A solenoid electro-valve comprising: a valve body having therein a first valve seat separating a fluid inlet from a fluid outlet; a unitary magnetic head including a solenoid winding and a magnetic circuit, said head being attached to said valve body, said head forming a core receiving chamber with said valve body; a magnetic yoke extending through said head from exterior thereof to said chamber, said yoke having an axial passage extending therethrough and a second valve seat; a magnetic core positioned in said chamber and having thereon first and second valves for respective engagement with said first and second valve seats; spring means for normally urging said core to cause said first valve to close said first valve seat; a narrow phase-shifting ring means surrounding a portion of said magnetic yoke positioned completely interiorly of said head for introducing a magnetic phase shift in said magnetic circuit; and a magnetic sleeve retaining said ring means on said magnetic yoke.
Claim 3
Dependent Claim
30 words
A solenoid electro-valve as claimed in claim 1, wherein said magnetic yoke has an outermost portion thereof extending exteriorly of said head, said portion having therein an outer annular groove.
Claim 4
Dependent Claim
27 words
A solenoid electro-valve as claimed in claim 1, wherein said ring means surrounds said magnetic yoke at a portion thereof spaced from the exterior of said head.
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) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |