Signal-producing pipe caliper

Details Signal-producing pipe caliper Signal-producing pipe caliper

1975-05-29

1978-08-29

Stearns, Richard R.

Geometrical instruments

Area integrators

Electrical

33DIG13, G01B 0512

Patent

active

041093860

ABSTRACT:
A new and improved signal-producing pipe caliper adapted to be moved through a section of pipe to detect internal variations in the inside surface of the pipe, and to transmit analog signals corresponding to such variations for suitable recording at a location which is remote from the caliper; such caliper having individual caliper feelers which are separately removable and replaceable without disturbing the electrical signal system, whereby replacement, including size changes of the caliper feelers for accommodating different inside diameters of the pipe being calipered, and/or repair may be accomplished in the field rather than requiring the return of the caliper to the shop.

REFERENCES:
patent: 1905200 (1933-04-01), Williams
patent: 2607128 (1952-08-01), Newhall
patent: 2630632 (1953-03-01), Brandon
patent: 2656613 (1953-10-01), Goble
patent: 2786276 (1957-03-01), Lusk
patent: 2908085 (1959-10-01), Price et al.
patent: 3010212 (1961-11-01), Kinley
patent: 3898741 (1975-08-01), Casey

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