Apparatus for measuring surface scratches on a tube

Details Apparatus for measuring surface scratches on a tube Apparatus for measuring surface scratches on a tube

1979-07-03

1981-09-22

Yasich, Daniel M.

Measuring and testing

Surface and cutting edge testing

Roughness

33174P, 33DIG13, G01B 528

Patent

active

042903033

ABSTRACT:
A cantilevered leaf spring with strain gages on the top and bottom surfaces and a phonograph needle disposed on the free end is disposed in a split tubular base which fits over a long tube to measure the depth of scratches in the outer surface of a long tube.

REFERENCES:
patent: 2240536 (1941-05-01), Woven
patent: 2396394 (1946-03-01), Shaw
patent: 2460726 (1949-02-01), Arndt, Jr.
patent: 2495797 (1950-01-01), Whitlock et al.
patent: 2841008 (1958-07-01), Breems et al.
patent: 3368395 (1968-02-01), Wright
patent: 3714715 (1978-02-01), Coes, Jr.
patent: 3777558 (1973-12-01), Bain
patent: 3875667 (1975-04-01), Wilke
patent: 4106333 (1978-08-01), Salje

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