US3827672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetically controlled fluid-operating valve
Assignee: Lucifer SA
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Filing: 1972-12-13
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Granted: 1974-08-06
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Expires: 1992-12-13
Abstract
Abstract An electromagnetically controlled valve wherein the sealing member is subjected to a reduced straining through the fact that the usual valve-closing spring is inserted between a stationary transverse supporting member and a sealing member floatingly carried inside a recess provided in an electromagnetically controlled core. Thus the spring acts, upon deenergization of the controlling coil, on the sealing member to urge it against a flange surrounding the opening of the recess, an idle motion being afforded for the core beyond the point corresponding to engagement between the sealing member and its seat to allow the core to continue its return movement to a slight extent without interference of the spring.
Inventors
- 👤 H Stampfli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:42
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0603; F16K31/0624; F16K31/0627; H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/16; H01F7/1607; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86622
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
140 words
An electromagnetically controlled fluid-operating valve of the type including a movable ferromagnetic core sliding inside a cylinder of non-magnetic material closed at one end by a ferromagnetic member, said core being adapted to be moved against the action of a spring by a magnetic field produced by an electrically energized coil and being provided with at least one external longitudinal groove and with a sealing member cooperating with the seat of the valve, a spring acting on said core to hold it in position, said core having an axial recess receiving said spring, said valve being characTerized by a supporting member extending through said groove into engagement with the end of the spring facing away from the sealing member, said supporting member being longitudinally stationary inside the cylinder, so as to form a bearing for said end of the spring.
Claim 2
Dependent Claim
140 words
An electromagnetically controlled fluid-operating valve of the type including a movable ferromagnetic core sliding inside a cylinder of non-magnetic material closed at one end by a ferromagnetic member, said core being adapted to be moved against the action of a spring by a magnetic field produced by an electrically energized coil and being provided with at least one external longitudinal groove and with a sealing member cooperating with the seat of the valve, a spring acting on said core to hold it in position, said core having an axial recess receiving said spring, said valve being characTerized by a supporting member extending through said groove into engagement with the end of the spring facing away from the sealing member, said supporting member being longitudinally stationary inside the cylinder, so as to form a bearing for said end of the spring.
Claim 3
Dependent Claim
52 words
A valve as claimed in claim 1, wherein said recess opens into one of the ends of the core, said sealing member being floatingly located in said recess at the opened side thereof and providing a bearing surface for the end of the spring opposite the end cooperating with said supporting member.
Claim 4
Dependent Claim
69 words
A valve as claimed in claim 2, wherein the sealing member is held in said recess in the core by an inner flange adjacent the opening of said recess, said spring acting on said core with the interposition of the sealing member and of said flange until the sealing member engages its seat and allows the flange to continue moving to a slight extent without interference of the spring.
Claim 5
Dependent Claim
33 words
A valve as claimed in claim 3, wherein the supporting member extends transversely with reference to the core across the recess in the core and into the diametrically opposed grooves in the latter.
Claim 6
Dependent Claim
34 words
A valve as claimed in claim 4, wherein the supporting member is stirrup-shaped, the medial transverse portion of the stirrup being housed inside the recess so as to form a bearing for the spring.
References Cited (Backward Citations)
US2735644A
Cited
US2819432A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-05 | 1978-02-04 | 1978-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-05 | 1982-02-04 | 1982-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-05 | 1986-02-04 | 1986-08-06 | $7700.00 | Window Closed / Lapsed |