Hardness testing apparatus provided with a safety stop device

Details Hardness testing apparatus provided with a safety stop device Hardness testing apparatus provided with a safety stop device

1979-12-06

1981-04-21

Goldberg, Gerald

Measuring and testing

Hardness

By penetrator or indentor

G01N 344

Patent

active

042625254

ABSTRACT:
The invention refers to a hardness testing apparatus operating under great applied loads, for example up to 3,000 Kg. provided with a safety stop device preventing the main load application and/or returns the instrument to a rest position, when the workpiece to be tested is not exactly disposed under the reference plane in order not to be touched by the indentor, or when under the instrument an operator's hand is inserted accidentally.

REFERENCES:
patent: 3590630 (1971-06-01), Ericksson

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