US4306589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low power solenoid-operated air valve with magnetic latching
Assignee: Ingersoll Rand Co
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Filing: 1980-01-09
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Granted: 1981-12-22
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Expires: 2000-01-09
Abstract
Abstract An electromagnetically controlled pneumatic valve includes a chamber having a first nozzle of magnetic material in opposed relation to a second nonmagnetic nozzle. A cylindrical, permanent magnet, valve member may become seated upon one or the other of the nozzles in response to an electromagnetic field generated by a coil surrounding the first nozzle. A conduit from the chamber between the nozzles connects to a pneumatic load such as an air tool.
Inventors
- 👤 Timothy J. Harned
- 👤 Wilbert G. Kautz
- 👤 Charles K. Taft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:01
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/18; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86622; Y10T137/86879; Y10T137/86895
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
158 words
An improved eletromagnetically controlled fluid valve comprising, in combination: a first fluid nozzle of magnetizable material defining a first valve seat; a second fluid nozzle of non-magnetic material defining a second valve seat in opposed relation to the first seat and spaced from the first seat; a valve member of permanently magnetized material mounted for translation between the seats, said valve member having one pole in opposed relation respectively to each of said seats and being translatable between the seats to alternatively seal the respective nozzles; electromagnet means at said first nozzle; means for energizing the electromagnet means and controlling the magnetic field in the region between the nozzles whereby momentary energization of the electromagnet means will cause translation of the valve member from one to the other of the nozzles; and said valve member being returnable to seat on the first nozzle when fluid input and electric input to the valve and electromagnet means are both removed.
Claim 2
Dependent Claim
158 words
An improved eletromagnetically controlled fluid valve comprising, in combination: a first fluid nozzle of magnetizable material defining a first valve seat; a second fluid nozzle of non-magnetic material defining a second valve seat in opposed relation to the first seat and spaced from the first seat; a valve member of permanently magnetized material mounted for translation between the seats, said valve member having one pole in opposed relation respectively to each of said seats and being translatable between the seats to alternatively seal the respective nozzles; electromagnet means at said first nozzle; means for energizing the electromagnet means and controlling the magnetic field in the region between the nozzles whereby momentary energization of the electromagnet means will cause translation of the valve member from one to the other of the nozzles; and said valve member being returnable to seat on the first nozzle when fluid input and electric input to the valve and electromagnet means are both removed.
Claim 3
Dependent Claim
46 words
The valve of claim 1 including a fluid chamber defined between the valve seats with a passage from the chamber for connection to a fluid load, said first fluid nozzle defining an inlet to the chamber, said second fluid nozzle defining an exhaust from the chamber.
Claim 4
Dependent Claim
32 words
The valve of claim 1 wherein the electromagnet means comprises a coil and said first nozzle comprises a ferromagnetic tube through the coil defining, in part, a field piece for the coil.
Claim 5
Dependent Claim
13 words
The valve of claim 3 including additional field piece means surrounding the coil.
Claim 6
Dependent Claim
37 words
The valve member of claim 1 wherein the electromagnetic means, upon activation, serves to repel the valve member from the first nozzle to a seat on the second nozzle upon reaching a threshold density of magnet flux.
Claim 7
Dependent Claim
15 words
The valve member of claim 1 wherein the first nozzle is a fluid inlet nozzle.
Claim 8
Dependent Claim
23 words
The valve member of claim 1 wherein the first nozzle is a fluid inlet nozzle and the second nozzle is an exhaust nozzle.
Claim 9
Dependent Claim
26 words
The valve member of claim 1 wherein the valve member is magnetized axially with respect to the direction of valve member travel between the valve seats.
References Cited (Backward Citations)
US3203447A
Cited
US3809123A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-12-21 | 1985-06-22 | 1985-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-21 | 1989-06-22 | 1989-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-21 | 1993-06-22 | 1993-12-22 | $7700.00 | Window Closed / Lapsed |