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:
Nov. 16, 1976
Filed:
May. 08, 1975
Vernon R Fencl, Northbrook, IL (US);
Demetrios J Rigas, Skokie, IL (US);
Grotnes Machine Works, Inc., Chicago, IL (US);
Abstract
Method and apparatus for single plane, balance determination of cylindrical parts and the like, particularly adapted for use with determining imbalance of unmounted tires. The tire to be tested for balance is supported for rotation about a horizontal axis and driven in a substantially constant slow speed while torque monitoring means generates an output proportional to the variations in torque resulting from driving of the support means, electrical signal conversion means determines the magnitude of imbalance as being one half the difference between the maximum and minimum torque output values which is shown on a visual output display. A marking device is triggered to indicate the position on the tire at the instant the maximum torque output occurs to locate the position of the center of gravity on a horizontal line moving upward around the rotation axis.