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:
Jan. 17, 1984
Filed:
Jul. 10, 1981
Applicant:
Inventor:
Curtis J Koch, Waterloo, IA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H / ; G05G / ;
U.S. Cl.
CPC ...
7475 / ; 745942 ;
Abstract
A bicycle drive sprocket apparatus which allows for varying torque transmission during its rotation and for varying angular velocity of said sprocket when constant rotational force is applied thereto. The device provides for accelerating and decelerating angular velocity during predetermined sectors of the rotational cycle. Through elliptical and other non-uniform radius gear parts, said apparatus converts varying torque inputs into constant torque output. Used as an improved front sprocket for a bicycle, it provides increased resistance to the operator of said bicycle during the downward stroke of the pedal and relatively less resistance during the horizontal portion of the pedal cycle.