O-ring inspection apparatus

Details O-ring inspection apparatus O-ring inspection apparatus

1977-06-24

1978-10-31

Myracle, Jerry W.

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

By loading of specimen

73800, 73832, G01N 308

Patent

active

041227050

ABSTRACT:
A pair of mandrels crossing at a right angle are moved into the center of an O-ring and then spread apart to stretch the O-ring around the mandrels to secure it and to form it into a twisted path. The mandrels are rotated to drive the O-ring through the twisted path so that the angular orientation of any given cross section of the O-ring changes as it advances around the path. An optical measurement apparatus senses cross section diameter of the O-ring at several locations. A support for one of the mandrels accommodates a load cell to measure the force developed by stretching the O-ring to provide a measure of O-ring elasticity.

REFERENCES:
patent: 3365938 (1968-01-01), Matsushita et al.
patent: 3447361 (1969-06-01), Schmitt

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