The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 16, 1976
Filed:
Jan. 30, 1975
John W Wilhelm, Jr, Moreland Hills, OH (US);
Skidmore-Wilhelm Mfg. Co., Cleveland, OH (US);
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.