Hardness tester

Details Hardness tester Hardness tester

1977-03-16

1978-09-26

Ciarlante, Anthony V.

Measuring and testing

Hardness

By penetrator or indentor

G01N 344

Patent

active

041160487

ABSTRACT:
Hardness tester adaptable to automatic testing of rubber comprising sample support surface, indentor perpendicular to the surface slidably movable within a housing, means for introducing gas under pressure between the indentor and the housing to laterally support the indentor while the sample is subjected to the weight of the indentor only, foot providing a flat datum surface normal to the indentor and with space through which the indentor is movable, means for lowering the foot and indentor in contact with the sample, means to increase the weight on the indentor and means to indicate its downward movement.

REFERENCES:
patent: 2282904 (1942-05-01), Tea
patent: 2892344 (1959-06-01), Sklar
patent: 2938377 (1960-05-01), Sklar
patent: 3657921 (1972-04-01), Lang
patent: 3855848 (1974-12-01), Sidler
patent: 4019376 (1977-04-01), Iwasaki

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