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:
Jan. 28, 1997
Filed:
Dec. 06, 1994
Nobuo Ozaki, Suminoe-ku, Osaka, JP;
Other;
Abstract
A bicycle rear derailleur is provided for shifting a chain from one sprocket to another of a multiple freewheel which includes a plurality of sprockets each having a lowermost edge portion. The derailleur comprises a control mechanism pivotally mounted to a bicycle frame by a first pivot shaft which is parallel to the hub shaft, and a chain guide pivotally mounted to the control mechanism by a second pivot shaft which is parallel to the hub shaft. The chain guide rotatably supports an upper guide wheel and a lower tension wheel. The chain guide is biased in a chain tensioning direction by a spring and controlled by the control mechanism to move axially of the hub shaft. The guide wheel has an uppermost edge portion located ahead of the lowermost edge portion of each sprocket which the chain engages. The control mechanism is freely pivotable about the first pivot shaft without any spring bias at least within a predetermined range.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile