Hardness tester

Details Hardness tester Hardness tester

1974-02-28

1976-01-27

Ruehl, Charles A.

Measuring and testing

Hardness

By penetrator or indentor

G01N 342

Patent

active

039344630

ABSTRACT:
Hardness testing apparatus including a workpiece penetrator, a stop for interrupting movement of the penetrator after it has penetrated the workpiece to a predetermined depth, and mechanism for individually measuring the load on the penetrator when it has penetrated the workpiece to the predetermined depth.

REFERENCES:
patent: 1192670 (1916-07-01), Moore et al.
patent: 1768512 (1930-06-01), Leeuw
patent: 3123997 (1964-03-01), Cosner
patent: 3296857 (1967-01-01), Kaczeus
patent: 3786676 (1974-01-01), Korolyshun et al.

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