Calipering tool

Details Calipering tool Calipering tool

1980-01-29

1982-03-23

Little, Willis

Geometrical instruments

Area integrators

Electrical

33178E, 33178F, G01B 512, G01B 528

Patent

active

043205798

ABSTRACT:
A calipering tool for use in a pipe and having a body and feeler means mounted with the body for engaging the surfaces of the pipe being calipered and with feelers moving in response to variations in the surface of the pipe, the improvement residing in mechanisms with the body for permitting the body of the calipering tool to be pumped in response to fluid pressure thereon into and out of the pipe for operation of the calipering tool.

REFERENCES:
patent: 2637117 (1953-05-01), Fredd
patent: 2695458 (1954-11-01), Fredd
patent: 2699001 (1955-01-01), McMahan
patent: 2777746 (1957-01-01), Fredd
patent: 2794260 (1957-06-01), Kinley
patent: 2947086 (1960-08-01), Boyle
patent: 3061938 (1962-11-01), Anderson et al.
patent: 3333466 (1967-08-01), Oliver
patent: 3474541 (1969-10-01), Cubberly, Jr.
patent: 4227309 (1980-10-01), Jones
patent: 4247985 (1981-02-01), Boyle

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