Geometrical instruments – Area integrators – Electrical
Patent
1982-11-03
1984-08-14
Stearns, Richard R.
Geometrical instruments
Area integrators
Electrical
33147L, 33147N, 33174PA, G01B 706, G01B 728
Patent
active
044648405
ABSTRACT:
Apparatus for measuring the thickness of a workpiece (34) at a plurality of predetermined points separated one from another along a predetermined measurement line. A caliper has first and second opposed jaws (20, 22) mounted on a support (19), which is biased to maintain the first jaw (20) in contact with a first surface of the workpiece. The second jaw is biased relative to the support to maintain the second jaw in contact with a second, opposite, surface of the workpiece. A transducer (24a) is controlled by the second jaw to produce an output signal representative of workpiece thickness. The workpiece is mounted for relative movement between the workpiece and the caliper so that the predetermined measurement line passes between the jaws of the caliper. The output signal is sampled as the predetermined points pass between the jaws of the caliper, and the sample signals are processed to provide thickness measurements at the predetermined points.
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patent: 2763934 (1956-09-01), Creek et al.
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patent: 3680215 (1972-08-01), Plough
patent: 4005528 (1977-02-01), Albertazzi
patent: 4146967 (1979-04-01), Rohner et al.
Blank Charles A.
Holler Norbert P.
Stearns Richard R.
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