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:
Jun. 23, 1987
Filed:
Jan. 08, 1986
Yoshihisa Iwasaki, Sakai, JP;
Maeda Industries, Ltd., Osaka, JP;
Abstract
A front bicycle derailleur for shifting a drive chain on a front gear including a smallest sprocket, an intermediate sprocket, and a largest sprocket, comprising a pair of parallel inner and outer guide plates opposed to each other with the drive chain interposed therebetween at a part positioned in a path of movement of the drive chain toward the front gear, and a control mechanism for laterally translating the guide plates to shift up and down the drive chain on the front gear, wherein the inner guide plate provides a first portion pressing the chain for shifting it from the smallest sprocket to the intermediate sprocket and a second portion pressing the chain for shifting it from the intermediate sprocket to the largest sprocket, the second chain pressing portion being positioned outside of an arc of an imaginary circle concentric with the sprockets of the gear and which arc passes through the first chain pressing portion.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile