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:
May. 27, 1986
Filed:
Jun. 07, 1985
Applicant:
Inventor:
Emerson L Kumm, Tempe, AZ (US);
Assignee:
Other;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H / ; F16H / ;
U.S. Cl.
CPC ...
474 49 ; 474 53 ;
Abstract
In a variable radius pulley drive system wherein a flat drive belt engages the central shanks of drive elements supported by the side pulley sheaves and the radial location of the drive elements is determined by the intersection of logarithmic spiral grooves in the pulley disks of the pulley sheaves whereof the stresses on the bearing members of the drive elements can be substantially reduced by disposing the belt element driving line toward or on the center line or axis of the bearing members of the drive elements.