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. 26, 1996
Filed:
Jul. 11, 1994
Thomas Ross, Chicago, IL (US);
Other;
Abstract
A twin gear drive assembly for a bicycle comprising a front gear assembly with a plurality of gears for driving the rear gear; for driving the frontal wheel with an associated front derailleur; an intermediate gear with a shaft coupled to the front gear for concurrent rotation; a drive gear or the frame beneath the front gear assembly with pedals for the rotation thereof with a chain retainer for the drive gear; a lower gear with a larger number of teeth located beneath the drive gear of the second assembly with an associated chain coupling the upper and lower gears of the supplemental gear assembly and pebbles secured to the lower gear of the second assembly for rotating the lower gear directly, the upper gear through the second chain and the first driven gear through the axle therebetween; first control means for controlling the derailleur of the first gear assembly and a second control assembly for controlling the chain in its position with regard to the gears of the second assembly at the discretion of the operator.