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:
Sep. 26, 2017
Filed:
Nov. 06, 2015
Schaeffler Technologies Ag & Co. KG, Herzogenaurach, DE;
Murat Bakan, Puebla, MX;
Rashid Farahati, Copley, OH (US);
Schaeffler Technologies AG & Co. KG, Herzogenaurach, DE;
Abstract
A friction material for a clutch comprising a plurality of fibers and a filler material including crystalline silica. The crystalline silica is cristobalite in an example aspect. A friction material for a clutch comprising: a plurality of fibers; and, a filler composition including: an amorphous silica-containing material; and, a plurality of crystalline silica particles, said particles having a Mohs hardness at least 6 and characterized by a rounded morphology. A friction material for a clutch comprising: a plurality of fibers; a filler composition including: diatomaceous earth; and, cristobalite including a plurality of particles characterized by a median particle size in a range from about 0.5 μm to about 5 μm; and, a resin; and, the friction material includes cristobalite in a range of from about 2% to about 20% by weight based on total weight of the friction material and has a static friction coefficient of at least 0.115.