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US 4,306,589 AGranted
Low power solenoid-operated air valve with magnetic latching
AssigneeThe Aro Corporation
InventorsTimothy J. Harned, Wilbert G. Kautz, Charles K. Taft
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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.
Claims8
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.
4 more elements
Dependencies are inferred from the claim text.