Apparatus for measuring the consistency or hardness of a materia

Details Apparatus for measuring the consistency or hardness of a materia Apparatus for measuring the consistency or hardness of a materia

1978-03-01

1979-07-03

Myracle, Jerry W.

Measuring and testing

Hardness

By penetrator or indentor

128774, G01N 342

Patent

active

041596404

ABSTRACT:
An apparatus for measuring the consistency or hardness of a material, for example skin tissue on a living body, comprises a support to be applied against the material to be tested and a feeler movably carried by the support for displacement through a distance which will be proportional to the hardness or consistency being measured. To avoid the need for careful positioning of the device on the test material with a carefully constant bearing pressure, a control circuit is provided for recording the displacement of the feeler only when the bearing pressure of the support on the test material has a predetermined value. The reading of the displacement is held and is preferably digital. Application of the support successively to different points on the test material will enable a true comparison of the readings at the various points.

REFERENCES:
patent: 2839917 (1958-06-01), Webster
patent: 3309916 (1967-03-01), Pearson

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