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:
Oct. 07, 1997
Filed:
Aug. 11, 1995
Hideo Hayakawa, Tochigi, JP;
Seiki Numao, Tochigi, JP;
Satoshi Aiba, Tochigi, JP;
Kenji Hiraishi, Tochigi, JP;
Abstract
A differential gear apparatus includes a differential case 21 having casing members 31,33 fixed by a tightening member 35 and driven by an engine to be rotated, side gears 37,39 on the wheel side, pinion gears 57,59 for linking the gears 37,39 with each other, and receiving bores 53,55 formed of first and second wall surfaces 77,79,83,85 which are respectively formed in the casing members 31,33 for receiving the pinion gears 57,59 slidably and rotatably therein, wherein wall surfaces 77,79 occupy semicircles or more of the receiving bores 53,55, and curvatures of the wall surfaces 83,85 are set to be larger than those of the wall surfaces 77,79 and wherein distances between the wall surfaces 83,85 and the pinion gears 57,59 are set to be longer than distances between the wall surfaces 77,79 and the pinion gears 57,59 in contacting areas of respective wall surfaces.