Small internal diameter bore gauge

Details Small internal diameter bore gauge Small internal diameter bore gauge

1975-08-26

1976-12-07

Aegerter, Richard E.

Geometrical instruments

Area integrators

Electrical

33147F, 33147K, 33162, G01C 512

Patent

active

039953742

ABSTRACT:
A small diameter bore gauge or the like includes a probe having sensor means at one end and a plurality of longitudinally extending resiliently hinged fingers at the other end. A plunger extends along the probe and is connected to the sensor. Wedge cam means connected to the other end of the plunger has beveled planar surfaces cooperating with the fingers to swing them radially about their hinged connection with the probe into or out of contact with the bore wall to be gauged. Each finger has an outwardly facing work contacting surface and an inwardly facing narrow wedge cam contacting portion radially opposite the work contacting surface. A longitudinal groove divides either the wedge cam or the narrow wedge cam contacting surface to provide laterally spaced bearing areas.

REFERENCES:
patent: 1806893 (1931-05-01), Cunningham
patent: 2595917 (1952-05-01), Bath et al.
patent: 2674046 (1954-04-01), Kaye

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