Internal diameter gauge

Details Internal diameter gauge Internal diameter gauge

1977-09-12

1979-04-03

Stearns, Richard R.

Geometrical instruments

Area integrators

Electrical

33147F, G01B 512

Patent

active

041469682

ABSTRACT:
An internal diameter gauge for measuring thin wall containers is disclosed herein. The gauge includes a pair of mandrel halves that are supported between a shaft and a housing with cooperating camming surfaces on the mandrel halves, the housing and the shaft which move the peripheral semi-circular surfaces of the mandrel halves radially. The camming surfaces on the housing and shaft are biased toward each other through a biasing mechanism between the shaft and the housing while the mandrel halves are biased toward each other through a further biasing mechanism and a handle cooperates with the shaft to displace the shaft and allow the mandrel halves to contract.

REFERENCES:
patent: 2226078 (1940-12-01), Spahn
patent: 2566970 (1951-09-01), Swensson
patent: 2694261 (1954-11-01), Dulligan
patent: 3289308 (1966-12-01), Trnka
patent: 3995374 (1976-12-01), Fisk

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