Geometrical instruments – Area integrators – Electrical
Patent
1983-07-18
1985-07-16
Martin, Jr., William D.
Geometrical instruments
Area integrators
Electrical
33508, G01B 334
Patent
active
045287597
ABSTRACT:
A gauge for spherical objects which includes a cylindrical tubular body having an interior passageway to receive an object for random movement, the passageway being of precisely developed configuration, which is maintained because the material forming the body has a very low coefficient of expansion since it is a mixture of catalyzed polyester resin and silicon carbide grit or comprised of equivalent materials having like characteristics.
REFERENCES:
patent: 2402142 (1946-06-01), Anderer et al.
patent: 2580412 (1952-01-01), Darmody
patent: 2859530 (1958-11-01), Renaud
patent: 3665757 (1972-05-01), Hoag
patent: 3797123 (1974-03-01), Fraley
patent: 3828442 (1974-08-01), Bernard
patent: 4385447 (1983-05-01), Bennett
Joyce Allen E.
Joyce Richard E.
Gordon Warren Co.
Martin, Jr. William D.
Robb Frank B.
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