Bowling ball and hardness measuring instrument holding device

Details Bowling ball and hardness measuring instrument holding device Bowling ball and hardness measuring instrument holding device

1977-09-06

1978-09-26

Goldstein, Herbert

Measuring and testing

Hardness

By penetrator or indentor

G01N 342

Patent

active

041160479

ABSTRACT:
A holding device having positioning means in a horizontal base member to support and position a generally spherical test object in alignment with a hardness measuring instrument positioned by retaining means in a base member connected upright member extended radially over the test object.

REFERENCES:
patent: 1037596 (1912-09-01), Coppage
patent: 1661718 (1928-03-01), Davis
patent: 1890923 (1932-12-01), Wilson
patent: 2278416 (1942-04-01), Atti
patent: 2421449 (1947-06-01), Zuber
patent: 3088591 (1963-05-01), Perthen et al.
patent: 3376734 (1968-04-01), Ether
patent: 3470737 (1969-10-01), Fridley
patent: 3478568 (1969-11-01), Borgersen

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