Tablet hardness tester and method of testing

Details Tablet hardness tester and method of testing Tablet hardness tester and method of testing

1975-01-30

1976-03-16

Gill, James J.

Measuring and testing

Hardness

G01N 310

Patent

active

039437574

ABSTRACT:
A method of testing the hardness of a circular tablet is presented and comprises holding the tablet on edge between two members respectively on opposite sides of the tablet, transmitting a controlled pressure to the tablet through one of the members, transmitting from said tablet through the other of said members to a pressure gauge and recording the maximum pressure on the gauge up to the moment that the tablet breaks. Apparatus is presented including a frame holding a source of pressure fluid, communicating said fluid to a pressure cylinder mounted beneath a tablet to be tested which is supported in a vertical position on edge, having the fluid pressure cylinder beneath the tablet and having a plunger in contact with the upper side of the tablet and connected with a load cell and pressure transmitting means with a pressure indicating gauge, all of this above the tablet.

REFERENCES:
patent: 1192670 (1916-07-01), Moore et al.
patent: 2209020 (1940-07-01), Billman et al.
patent: 2975630 (1961-03-01), Michel
patent: 3478568 (1969-11-01), Borgersen

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