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:
Feb. 02, 1999
Filed:
Jul. 03, 1997
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
An improved rear derailleur for changing the gear ratio of a bicycle is disclosed. It includes a fixed member, a movable member, a parallelogram mechanism connecting the fixed member with the movable member, and a cable adjusting screw which is screwed to a screw socket fixed on the fixed member. The cable adjusting screw is connected to a first end of a cable, wherein the cable has a second end fixed to a movable member. The cam member comprises a guiding surface for guiding the cable between the cable adjusting screw and the movable member. The guiding surface of the cam member is structured substantially coinciding a portion of a fictitious circle centered at a rotating pin which connects an outer linkage of the parallelogram with a second end of the fixed member. Furthermore, the cable adjusting screw is positioned in such a manner that its extension is always substantially tangential to the guiding surface of the cam member, so as to allow the cable to be pulled in a direction substantially coincident with the axial extension of the cable adjusting screw.