Gauging apparatus

Details Gauging apparatus Gauging apparatus

1984-08-13

1987-04-14

Eisenzopf, Reinhard J.

Communications: electrical

Continuously variable indicating

With particular transmitter

73304C, 324 61P, 324 61R, G01R 1702, G01B 714, G01B 728

Patent

active

046582541

ABSTRACT:
Apparatus for gauging physical dimensions of solid or tubular bodies. Apparatus comprises a capacitive transducer having electrodes forming diametrically arranged pairs of capacitors and means for connecting the pairs, preferably sequentially, in an arm of a four arm electrical network. For circumferential scanning of a solid body along its length, the body is moved along a path of travel through a head assembly including the transducer with the axis of the body being coincident with the axis of the transducer. As the body moves through the transducer the diametrically arranged pairs of capacitors scan the surface to result in a surface profile of the body. For scanning the bore of a pipe or tube the transducer is inserted as a probe and moved along the bore of the pipe or tube, means being provided for maintaining the probe coaxial with the pipe or tube.

REFERENCES:
patent: 2630632 (1953-03-01), Brandon
patent: 2892152 (1959-06-01), Buisson
patent: 3377861 (1968-04-01), Thaler
patent: 3452743 (1969-07-01), Rieke
patent: 3500185 (1970-03-01), Eppler
patent: 3742347 (1973-06-01), Walton
patent: 3827300 (1974-08-01), Thaler
patent: 4086528 (1978-04-01), Walton

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