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:
Aug. 03, 1993
Filed:
Oct. 24, 1990
Mark S Brewer, North Chili, NY (US);
Gene A Stritzel, Rochester, NY (US);
Thomas B Ryan, Webster, NY (US);
Zexel-Gleason USA, Inc., Rochester, NY (US);
Abstract
Frictional effects at different gear mounting surfaces within a differential are varied to control bias ratio. The gearing arrangement includes side gears respectively coupled to axle ends and element gears which transfer and divide torque between the side gears. Coefficients of friction at end faces of the element gears are varied between different element gears to control overall bias ratio while minimizing the effect of changes in overall bias ratio on an inherent bias ratio imbalance between opposite directions of differentiation. Helical gear portions are formed at the ends of the element gears to better balance thrust forces acting on different element gears.