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:
Nov. 13, 1979
Filed:
Feb. 14, 1978
Kazuto Yamasaki, Sakai, JP;
Maeda Industries, Ltd., Osaka, JP;
Abstract
A safety device for use with a speed change gear system for a bicycle which comprises a casing mountable in position to a bicycle frame, a hollow shell member disposed within the casing, a resilient member including at least one first coil spring of large diameter and a second coil spring of a smaller diameter disposed within the shell member in axial alignment and partial overlapping relation with each other. Further, at least three axial spaced slide members are disposed within the shell member so as to be cooperative with the resilient member. A tubular sheath extends in curved position and is connected at one end to a rear derailleur and at the other end to one of the slide members, and a gearshift wire passes through the safety device and the tubular sheath.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile