US3570806A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balanced electromechanical control valve
Assignee: Bell Aerospace Corp
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Filing: 1969-01-14
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Granted: 1971-03-16
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Expires: 1989-01-14
Abstract
Abstract An electromechanical control valve in which a poppet is biased against a seat therefor within an enclosing chamber having inlet and outlet ports and which is balanced against fluid pressure forces. Oppositely disposed walls of the chamber are deformable and a force-transmitting rod carries the poppet between such deformable walls whereby displacement of the poppet causes deformation of the walls to urge the poppet in the opposite direction. A system geometry is utilized which takes into account the effective surfaces of the poppet and the configurations of the walls when deformed. In particular embodiments, bias on the poppet is obtained by the application of the magnetic potential of a permanent magnet operatively associated with an armature extension of the poppet outside the chamber. The permanent magnet biases the poppet to its seat and a coil is disposed on the armature to oppose the permanent magnet potential whereby the deformed chamber walls, acting as springs, urge the poppet to an open position.
Inventors
- 👤 Oded E Sturman
- 👤 Salvatore A Sciortino
- 👤 Abdul R Kassir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:42
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/08; F16K31/082
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
195 words
An on-off electromechanical valve for controlling fluid flow comprising; chamber means defining an inlet port and an outlet port; valve means including a seat and a valve disposed in said chamber for controlling flow therethrough between said ports; first and second spring-diaphragm means sealingly secured to said chamber on opposite sides of said valve means and affixed to said valve means; said first and second spring-diaphragm means having effective areas substantially equivalent to the area of said inlet and outlet ports respectively; armature means connected to said valve means; permanent magnet means magnetically coupled to said armature means and applying a force thereto to continuously urge said valve means in a first direction to a first stable position and to resiliently deform said first and second spring-diaphragm means in a first direction applying a force urging said valve means in a second direction opposite to said first direction; and an electromagnet means magnetically coupled to said armature means and, when energized, reducing the force applied by said permanent magnet means to a level such that the force applied by said spring-diaphragm means moves said valve means from said first stable position in said second direction.
Claim 2
Dependent Claim
195 words
An on-off electromechanical valve for controlling fluid flow comprising; chamber means defining an inlet port and an outlet port; valve means including a seat and a valve disposed in said chamber for controlling flow therethrough between said ports; first and second spring-diaphragm means sealingly secured to said chamber on opposite sides of said valve means and affixed to said valve means; said first and second spring-diaphragm means having effective areas substantially equivalent to the area of said inlet and outlet ports respectively; armature means connected to said valve means; permanent magnet means magnetically coupled to said armature means and applying a force thereto to continuously urge said valve means in a first direction to a first stable position and to resiliently deform said first and second spring-diaphragm means in a first direction applying a force urging said valve means in a second direction opposite to said first direction; and an electromagnet means magnetically coupled to said armature means and, when energized, reducing the force applied by said permanent magnet means to a level such that the force applied by said spring-diaphragm means moves said valve means from said first stable position in said second direction.
Claim 3
Dependent Claim
53 words
A valve as defined in claim 1 wherein said electromagnet means, when energized, applies a force in said second direction sufficient to move said valve means to a second stable position and to resiliently deform said spring-diaphragm members in a second direction applying a force urging said valve means in said first direction.
Claim 4
Dependent Claim
26 words
A valve as defined in claim 2 wherein said permanent magnet means, said electromagnet means and said armature means are disposed externally of said chamber means.
Claim 5
Dependent Claim
30 words
A valve as defined in claim 3 which further includes a force transmission rod rigidly interconnecting said spring-diaphragm means thereby to impart substantially identical resilient deformation to said spring-diaphragm means.
References Cited (Backward Citations)
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US1237981A
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US1385681A
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US2723055A
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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) | 1974-03-15 | 1974-09-14 | 1975-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-15 | 1978-09-14 | 1979-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-15 | 1982-09-14 | 1983-03-16 | $7700.00 | Window Closed / Lapsed |