Rotational motion fluid loop sensor using magnetically levitated

Details Rotational motion fluid loop sensor using magnetically levitated Rotational motion fluid loop sensor using magnetically levitated

1986-04-23

1987-09-08

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

73516R, 73517A, G01P 1500

Patent

active

046926143

ABSTRACT:
A rotational motion sensor has a circular, tubular body (1) filled with a fluid. A sensor head (6) forming part of the body houses a movable detecting element in the form of a piston (7) which is magnetically levitated so that it is kept out of contact with the sensor body. Movement of the piston is detected in a number of different ways including using a variable magnetic reluctance pick-off (4, 5).

REFERENCES:
patent: 3516294 (1970-06-01), Schmieder
patent: 3530727 (1970-09-01), Albert
patent: 4043204 (1977-08-01), Hunter
patent: 4047439 (1977-09-01), Russell et al.
patent: 4528851 (1985-07-01), Ozols

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