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:
Mar. 21, 1995
Filed:
Feb. 05, 1993
Gunter Nurnberger, Schweinfurt, DE;
Fichtel & Sachs AG, Schweinfurt, DE;
Abstract
A multi-speed drive hub for bicycles includes a hub shaft (1), a driver (7), a hub sleeve (9), as well as a planetary gear train (21) as part of the hub speed-changing transmission. The planetary gear train in turn has a planet gear carrier (17); at least one multistep planet gear (23); sun gears (25) meshing with the steps of the planet gear (23), which sun gears are selectively capable of being linked with the hub shaft (1) against rotation and an internal gear (11). Also provided are a coupling or clutching mechanism for coupling the driver with the planet gear carrier or with the internal gear as well as a speed-changing mechanism for the hub speed-changing transmission. In order to achieve quiet, low-wear running, the planet gear carrier (17) is mounted in a manner capable of rotation at the hub shaft on both sides of the planet gears (23).
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile