Sensitive electrical to mechanical transducer

Details Sensitive electrical to mechanical transducer Sensitive electrical to mechanical transducer

1988-12-23

1990-05-22

Cohan, Alan

Fluid handling

Pressure modulating relays or followers

25112908, 335229, G05D 1600, H01F 714

Patent

active

049268961

ABSTRACT:
A transducer having a cross field polarized permanent magnet mounted for slight pivotal movement within an annular coil winding. The magnet comprises neodymium-iron-boron to provide a compact, lightweight, low inertia and high intensity magnetic field. A magnetic field generated by current in the coil winding influences the permanent magnet to pivot slightly about a horizontal axis and rotate a yoke structure to produce a mechanical output of the transducer. In the preferred embodiment of the invention, the yoke is attached to a spring arm for controlling escape gas pressure from a nozzle to thereby control the pressure of a gas stream.

REFERENCES:
patent: 3441053 (1969-04-01), Robinson
patent: 4362182 (1982-12-01), Sjolund
patent: 4492246 (1985-01-01), Prescott et al.
patent: 4527583 (1985-07-01), Simpson
patent: 4546338 (1985-10-01), Idogaki
patent: 4554938 (1985-11-01), Twisselmann
patent: 4574843 (1986-03-01), Loup
patent: 4595029 (1986-06-01), Roth
patent: 4690371 (1987-09-01), Bosley
Hicorex-Nd H-97, Neodymium-Iron-Boron Permanent Magnets, Hitachi Magnetics Corporation, dated Nov. 1986.

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