Displacement sensor

Details Displacement sensor Displacement sensor

1994-01-26

1995-09-19

Noland, Thomas P.

Measuring and testing

Testing of apparatus

32420724, 356373, G01B 2100

Patent

active

054507642

ABSTRACT:
A sensor (1) for sensing the displacement of a body (12) comprises a deformable strip (2) enclosed in a chamber 3. The strip is constrained under longitudinal and transverse constraint such that end portions (9, 10) of the strip are parallel to a direction of movement of the body, the strip being locally deformed in the form of an S-bend. A magnet operable between the strip and the body varies the location of the S-bend along the length of the strip according to the position of the body. Optical or electronic sensors are provided for indicating the sensed position. The sensor may be used for sensing liquid levels or displacement of moving bodies such as valve elements particularly in hazardous environments including aircraft.

REFERENCES:
patent: 3065635 (1962-09-01), Keller
patent: 3260110 (1966-07-01), Lutz
patent: 4194397 (1980-03-01), Yasuda
patent: 4457171 (1984-07-01), Gebauer
patent: 4477726 (1984-10-01), Reichi
patent: 4637254 (1987-01-01), Dyben et al.
patent: 5074053 (1991-12-01), West
Patent Abstracts of Japan; Grp P716, vol. 12, No. 205, "Shape Measuring Method for Cold-Rolled Steel Sheet", Abs. pub. date Jun. 14, 1988, (abstract of Japanese Patent No. 63-8503).

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