Guage and method for measuring tapered internal and external thr

Details Guage and method for measuring tapered internal and external thr Guage and method for measuring tapered internal and external thr

1984-07-16

1986-02-04

Martin, Jr., William D.

Geometrical instruments

Gauge

With computer responsive to contact probe

33199R, 33545, 33531, G01B 340

Patent

active

045676704

ABSTRACT:
A thread guage for indirectly determining the pitch diameter and taper of threads on casing and tubing is disclosed. In the preferred and illustrated embodiment, the thread guage includes a pair of adjustable thread engaging arm assemblies mounted on a bar member. The arm assemblies are selectively locked along the bar member, the distance between the arm assemblies being a fixed position corresponding to a specified thread size. At least two indicators are mounted on one of the arm assemblies providing a value of the measured thread dimensions relative to a standard, which value is used to determine pitch diameter and taper of the thread.

REFERENCES:
patent: 2874475 (1959-02-01), McGaffey
patent: 3082538 (1963-03-01), Theuerkauf
patent: 4148146 (1979-04-01), Holland
patent: 4189843 (1980-02-01), Baldwin
patent: 4324049 (1982-04-01), Blose

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