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:
Oct. 14, 1980
Filed:
Feb. 14, 1979
Timber Dick, Burlingame, CA (US);
Other;
Abstract
A pedal driven vehicle such as a bicycle which employs oscillating levers instead of crank type pedals, and endless chain to which the two pedal levers are respectively connected, one to each run of the chain by pull and push rods to impart an oscillatory movement to said chain and in which the oscillating chain is connected to drive two shafts in opposite directions at any one time and means including one way drives connecting said shafts respectively to the drive wheel for propelling said vehicle. The vehicle also has means for simultaneously moving the connections between said pull and push rods and the oscillating levers respectively along the lengths of said levers in the same direction so as to change the effective leverage of said levers and to thus change the driving ratio imparted to the propelling wheel by the drive mechanism.