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:
May. 25, 1999
Filed:
May. 06, 1998
Applicant:
Inventor:
Dennis E Gunderson, Madison, WI (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73-9 ;
Abstract
The disclosure describes an apparatus for measuring the static and kinetic friction properties of sheet materials. The apparatus comprises a sled, moving table, means for creating and measuring the friction force between sled and table, and lift mechanism which places sled on table, and removes sled from the table. Novel aspects include a lift design which causes the sled to be maintained in positive contact with the force measuring means, friction force creating means which integrate a small displacement static forcing means with a mechanically stiff kinetic drive, and sled construction which securely clamps a flat test-piece on a flat plate.