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. 04, 1984
Filed:
Oct. 19, 1981
Thomas J Weiss, Chesterland, OH (US);
Other;
Abstract
A foot-operated mechanism (24) for actuating the rear derailleur (20) of a bicycle. The mechanism senses tension in the drive chain (22) and effects movement of the derailleur actuating cable (74) when driving tension is reduced from the drive chain (22). The actual shift of the derailleur occurs only upon reestablishment of tension in the drive chain (22) by applying a driving force to the pedals. The derailleur cable is connected, through a transfer mechanism (30), to a slotted driven wheel (42) which is normally biased into engagement with drive pins (64a) located on a drive wheel (26) which is attached to the crank mechanism (18) of the bicycle, and is moved out of engagement by a chain-engaging idler sprocket (50) attached to a pivot block (38) on which the driven wheel (42) is mounted.