Hardness tester

Details Hardness tester Hardness tester

1980-06-09

1982-06-29

Howell, Kyle L.

Measuring and testing

Hardness

Scleroscope or rebound

G01N 352

Patent

active

043367100

ABSTRACT:
A hardness tester comprising a tubular element mounted in an upright position, a ball, and a retaining mechanism for the ball. A passage extends from the retaining mechanism through the tubular element and terminates in an opening adapted to be positioned over a surface of a test specimen. The tubular element has a wall through which the passage is visible from the exterior of the tubular element and indicia on the wall. The ball has a lesser cross-sectional area than the passage and a lesser cross-sectional area than the opening.

REFERENCES:
patent: 1762639 (1930-06-01), Roudie
patent: 2001087 (1935-05-01), Abramson
patent: 3038330 (1962-06-01), Criche

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