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. 26, 1983
Filed:
Oct. 20, 1980
John M Kern, Ithaca, NY (US);
Borg-Warner Corporation, Chicago, IL (US);
Abstract
A multi-part sprocket and a multi-speed transmission comprising at least a pair of the sprockets, the sprockets each comprising an external toothed drive member surrounded by a two part externally toothed ring member, one part of which is axially movable with respect to the other with both parts having internal teeth meshing with the external teeth of the drive member. Another similar two part member surrounds the first; the similar member having external and internal teeth. A chain connects a pair of sprockets, the chain meshing the external teeth. The speed ratio between the sprocket can be changed by axially moving parts of the ring member. The ring members have beveled surfaces facing one another to guide the chain during a speed ratio change.