Electronic measuring gauge for hardness tester

Details Electronic measuring gauge for hardness tester Electronic measuring gauge for hardness tester

1987-05-06

1988-09-27

Noland, Tom

Measuring and testing

Hardness

By penetrator or indentor

73 83, G01N 344

Patent

active

047732580

ABSTRACT:
A measuring gauge which may be retrofitted to existing hardness testers to replace existing mechanical measuring gauges and which can be installed with minimal assembly expense. The gauge includes a movable feeler pin, a movable tracking member, and a resilient coupling member for securing the pin to the tracking member, whereby the movable tracking member tracks the movement of the feeler pin. An electrical sensor senses the movement of the movable tracking member. An amplifier amplifies the sensed movement of the tracking member and a digital display displays the sensed movement of the tracking member.

REFERENCES:
patent: 4118975 (1978-10-01), Iwasaki
patent: 4159640 (1979-07-01), Leveque et al.
patent: 4246777 (1981-01-01), Birner et al.
patent: 4262525 (1981-04-01), Ernst
patent: 4304123 (1981-12-01), Aschinger et al.
patent: 4450713 (1984-05-01), Arimatsu
patent: 4691559 (1987-09-01), Fischer

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