Patent US3589391A successfully refreshed from Google Patents.
US3589391A
Expired / Lapsed
US
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Electrically operated fluid flow control valve device
Assignee: Individual
•
Filing: 1969-05-06
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Granted: 1971-06-29
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Expires: 1989-05-06
Abstract
Abstract An electrically operated valve device for controlling fluid flow therethrough comprising a casing which houses a central stationary core surrounded by an energizing coil, a movable slave core on each side of the central core, and a spring-loaded valve member in each movable core to control fluid flow through axial passages in the central core. Deflectors are provided in the movable cores to shield the valve members against fluid flow, and fluid pressure may be employed to assist the valve members whose spring loading can be selected to determine the control effect of the valve device.
Inventors
- 👤 Ettore Pagliaro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:02
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0644; F16K31/0655; F16K31/0651; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7771; Y10T137/7779; Y10T137/8593; Y10T137/87265; Y10T137/87507
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
83 words
An electrically operated valve device for controlling fluid flow therethrough, the device comprising a casing containing two axially spaced chambers; a fixed magnetic core between said chambers and formed with first and second passageways which interconnect said chambers; a movable magnetic core slidably mounted at each of said chambers; a first valve member carried by one of said movable cores to control said first passageway; and a second valve member carried by The other of said movable cores to control said second passageway.
Claim 2
Dependent Claim
83 words
An electrically operated valve device for controlling fluid flow therethrough, the device comprising a casing containing two axially spaced chambers; a fixed magnetic core between said chambers and formed with first and second passageways which interconnect said chambers; a movable magnetic core slidably mounted at each of said chambers; a first valve member carried by one of said movable cores to control said first passageway; and a second valve member carried by The other of said movable cores to control said second passageway.
Claim 3
Dependent Claim
62 words
A valve device according to claim 1, in which said casing comprises a pair of end closure members each formed with a connector opening, and a pair of sleeves of nonmagnetic material extend outwardly from said fixed core, said chambers being defined by said fixed core, said sleeves, and said end members, and said movable cores being respectively accommodated in said chambers.
Claim 4
Dependent Claim
37 words
A valve device according to claim 1, in which a fixed deflector is mounted in at least one of said chambers to prevent the corresponding valve member being driven towards the fixed core by the fluid flow.
Claim 5
Dependent Claim
68 words
A valve device according to claim 3, in which said deflector is substantially cup-shaped and comprises a shaft within which extends an axial passage connected to the aperture in the corresponding flange and terminating in a plurality of radial holes, the deflector being accommodated in an axial opening of larger diameter which is formed in the corresponding movable core, to form a space for passage of the fluid.
Claim 6
Dependent Claim
55 words
A valve device according to claim 1, in which at least one of the two movable cores is spaced apart from the casing end member of magnetic material by means of a nonmagnetic spacer to prevent attraction of that movable core which is opposed to the action of the central core during the energization phase.
Claim 7
Dependent Claim
40 words
A valve device according to claim 2, in which said casing comprises a cylindrical shell and two end members tightly clamped to ends of said shell, said end members also engaging the nonmagnetic spacer sleeves extending from the fixed core.
Claim 8
Dependent Claim
81 words
A valve device according to claim 3, in which means are provided in each movable core for controlling the respective valve member which is formed with a head and a stem, said means each comprising a pin which passes diametrically through the core and through axial openings in the respective deflector mounted in the chamber and in an opening provided in the valve stem accommodated in the deflector, and a spring inserted between said pin and the head of the valve.
Claim 9
Dependent Claim
20 words
A valve device according to claim 2, in which a spring is inserted between the spacer and the respective deflector.
References Cited (Backward Citations)
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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) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |