Mechanical/electrical displacement transducer

Details Mechanical/electrical displacement transducer Mechanical/electrical displacement transducer

1995-06-07

1997-04-15

O'Shea, Sandra L.

Electricity: measuring and testing

Magnetic

Displacement

341 15, 31856816, G01B 714, H03M 122

Patent

active

056213182

ABSTRACT:
Displacement measuring apparatus for measuring the displacement and movement of an object includes a sensor having an operative surface and circuitry for producing an electrical output signal whose value is dependent upon the area of the operative surface covered by an electrical/magnetic field producing member. The apparatus also includes an elongate, flexible band capable of producing an electric/magnetic field, where the band is attached at one end to the sensor to roll over and cover or unroll from over and uncover the operative surface as the object whose displacement is to be measured is moved. The value of the electrical output signal produced by the circuitry is thus dependent upon the area of the operative surface covered by the band and thus by the position and movement of the object.

REFERENCES:
patent: 4092579 (1978-05-01), Weit
patent: 4630047 (1986-12-01), Tanaka et al.
patent: 4779094 (1988-10-01), Lee et al.
patent: 4931887 (1990-06-01), Hegde et al.
patent: 4951048 (1990-08-01), Ichikawa et al.
patent: 5028875 (1991-07-01), Peters

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