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:
Jul. 25, 2017
Filed:
Oct. 07, 2010
Roger L. Briggs, Lake Orion, MI (US);
Martin S. Kramer, Clarkston, MI (US);
Ronald P. Buffa, Fenton, MI (US);
Matthew P. Werner, Idaho Falls, ID (US);
Roger L. Briggs, Lake Orion, MI (US);
Martin S. Kramer, Clarkston, MI (US);
Ronald P. Buffa, Fenton, MI (US);
Matthew P. Werner, Idaho Falls, ID (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A pulley for a continuously variable transmission and a method of creating an engineered surface on an outer surface of a pulley of a continuously variable transmission, with the engineered surface engaging with a belt or chain of the continuously variable transmission. The method comprising the steps of: determining an actual engineered roughness (Rpk) on the outer surface needed to obtain a predetermined friction between the engineered surface and the belt or chain; and etching microgrooves in at least a portion of the outer surface to create the engineered surface by employing a laser to etch the microgrooves, the microgrooves being formed to a depth that produces the actual engineered roughness (Rpk).