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:
Jun. 14, 1994
Filed:
Apr. 02, 1993
Applicant:
Inventors:
Paul Germain, Montreal, CA;
Douglas Milne, Vancouver, CA;
Assignee:
Noranda Inc., Toronto, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73-9 ;
Abstract
An apparatus for measuring the basic friction angle of a surface of given material comprises a housing adapted to be held against a surface of material to be tested, a base which can slide along the inside wall of the housing, a wheel mounted on the lower part of the base and adapted to contact the surface to be tested, a spring for applying a load on the base to force the wheel against the surface to be tested, and a torque gauge for applying a torque to the wheel, and for measuring the maximum torque required to spin the wheel on the surface to be tested at various loads applied to the base.