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. 25, 1980
Filed:
Apr. 20, 1978
Josef Keller, Schweinfurt, DE;
Fichtel & Sachs AG, Schweinfurt, DE;
Abstract
The braking effect of the coaster brake in a bicycle wheel hub is improved by utilizing the frictional force of the wheel hub acting on an expanding split brake sleeve for further expanding the sleeve. A lug on the brake sleeve is received in a slot of a stationary bearing cone on the wheel axle in such a manner that the circumferential frictional force transmitted by the rotating hub shell to the brake sleeve causes the latter to tilt about a pivot axis spaced from the axis of hub rotation, and a cam face on the bearing element is inclined so that a component of the frictional circumferential force drives the lug along the cam face toward the internal face of the hub shell.