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. 27, 1998
Filed:
Nov. 07, 1995
Masao Teraoka, Tochigi-ken, JP;
Osamu Ishikawa, Tochigi-ken, JP;
Satoshi Aiba, Tochigi-ken, JP;
Kenji Hiraishi, Tochigi-ken, JP;
Tochigi Fuji Sangyo Kabushiki Kaisha, Tochigi-ken, JP;
Abstract
A differential apparatus includes a differential casing, a pair of side gears and plural pairs of pinion gears. The pinion gears are accommodated in bores formed in the differential casing, respectively. On the side wall of the differential casing a plurality of lubrication holes are formed for introducing the lubrication oil into the differential casing. Each lubrication hole is arranged so that a center thereof is positioned in the vicinity of a meshing point of the pinion gears. In operation, due to the screw pumping effect of the pinion gears, plenty of lubrication oil is introduced into meshing portions of the pinion gears.