Angular displacement detecting device

Details Angular displacement detecting device Angular displacement detecting device

1991-01-14

1992-04-07

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

25023112, 250230, G01D 530

Patent

active

051030896

ABSTRACT:
An angular displacement detecting device which is provided with a tubular casing having a chamber in which a liquid is sealed, a floating body having a magnetic characteristic, the floating body being disposed in the liquid sealed in the chamber and being supported for rotation about a predetermined rotational axis, a magnetism generating member for cooperating with the floating body to constitute a magnetic circuit, and a detector for detecting a relative rotation about the rotational axis between the floating body and the tubular casing. The floating body is formed of either a material in which a magnetic material powder with a particle size of 10 .mu.m or less is dispersedly mixed with a thermoplastic, high polymeric organic material or a material in which a magnetic material powder whose particles are coated with a silane or titanium coupling agent is mixed with a thermoplastic, high polymeric organic material.

REFERENCES:
patent: 2871706 (1956-06-01), Fischer et al.
patent: 4339959 (1982-07-01), Klaus, Jr. et al.
patent: 4694614 (1987-09-01), Wilson et al.

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