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:
Sep. 23, 1980
Filed:
Feb. 12, 1979
Masashi Nagano, Sakai, JP;
Hideaki Fujimoto, Toyonaka, JP;
Toshio Mizuno, Sakai, JP;
Tetufumi Egami, Sakai, JP;
Shimano Industrial Company, Limited, Osaka, JP;
Abstract
A front derailleur for a bicycle has a chain guide having two opposite guide plates spaced at an interval larger than the width of a driving chain and an outer guide plate of the two guide plates is provided with a chain face which is formed at a position substantially intermediate lengthwise and at an upper portion widthwise of the same and radially outward to a chain sprocket and projects toward an inner guide plate. The chain guide face and the inner surface of the inner guide plate are spaced at an interval slightly larger than the width of the driving chain and smaller than the interval between the two guide plates.