Material hardness tester

Details Material hardness tester Material hardness tester

1972-08-15

1976-02-24

Queisser, Richard C.

Measuring and testing

Hardness

By penetrator or indentor

G01N 344

Patent

active

039397009

ABSTRACT:
An improved tester for measuring the hardness of materials, the tester having multiple spring means and an adjustable control for placing one or both of the spring means into operation to load the tester under different minor loads.

REFERENCES:
patent: 2520387 (1950-08-01), Dobry et al.
patent: 2667065 (1954-01-01), Ernst
patent: 2667066 (1954-01-01), Ernst
patent: 3182491 (1965-05-01), Tschirf et al.
patent: 3309916 (1967-03-01), Pearson
patent: 3367174 (1968-02-01), Affri

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