Sensitive electrical to mechanical transducer

Fluid handling – Pressure modulating relays or followers

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Details

25112908, G05D 1600

Patent

active

050224255

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: 3332045 (1967-07-01), Rodaway
patent: 3441053 (1969-04-01), Robinson
patent: 4085921 (1978-04-01), Ueda
patent: 4574843 (1986-03-01), Loup et al.
patent: 4690371 (1987-09-01), Bosley

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