Device for measuring the properties of solid materials which can

Details Device for measuring the properties of solid materials which can Device for measuring the properties of solid materials which can

1985-02-07

1987-09-08

Levy, Stewart J.

Measuring and testing

Hardness

By penetrator or indentor

G01N 348

Patent

active

046915591

ABSTRACT:
A guidance arm guides a penetrating body into solid materials. An electromotive drive connected to the guidance arm urges the penetrating body with a specific, but variable force onto the surface of the material. A suspended distance-measuring device has a probe rigidly connected to a backlash-free follower and a metallic substrate with an inert coating connected to the guidance arm. The follower is finely adjusted in the direction of motion of the penetrating body, and is switched off when the penetrating body has been set down onto the material and the distance-measuring device measures a prespecified distance. A voltage output representing the depth of penetration is fed from the distance-measuring device to an electrical evaluation circuit.

REFERENCES:
patent: 4094188 (1978-06-01), Bellouin et al.
patent: 4104901 (1978-08-01), Sidaway
patent: 4118975 (1978-10-01), Iwasaki
patent: 4331026 (1982-05-01), Howard et al.
patent: 4450713 (1984-05-01), Arimatsu

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