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:
Mar. 23, 1993
Filed:
Oct. 29, 1991
Shiro Ichiki, Saitama, JP;
Hideyasu Takefuta, Saitama, JP;
Diesel Kiki Co., Ltd., , JP;
Abstract
A differential device includes a pair of propeller shafts extending into a housing, a pair of side gears connected respectively to the propeller shafts, and at least one pair of element gears having screw gear portions meshing respectively with screw gear portions of the side gears. The element gears have respective coupling gear portions meshing with each other. In order to improve a drive torque distribution, either pitch diameters or helix angles of the screw gear portions of the two side gears are different from each other. In order to reduce the overall diameter of the differential device, a spline portion and the screw gear portion of at least one of the two side gears are spaced from each other along an axis of the side gear, the spline portion serving to connect the side gear to the mating propeller shaft.