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:
Feb. 24, 1987
Filed:
Nov. 05, 1985
Kan Sasaki, Aichi, JP;
Keisuke Takimura, Toyota, JP;
Nobuaki Katayama, Toyota, JP;
Fumitomo Tsuchiya, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi, JP;
Abstract
The present invention relates to a transaxle mechanism for use in a four-wheel drive system of an automotive vehicle. The four-wheel vehicle drive system includes a central differential gear assembly, a front-wheel differential gear assembly, a ring gear and a bevel gear. The central differential gear assembly includes: a toothed wheel which engages with a transmission output gear of a power transmission gear unit; a central differential case fixed to the toothed wheel; a central pinion cross shaft fixed to the central differential case; central differential bevel pinions mounted rotatably on the central pinion cross shaft and central side bevel gears engaging with the central differential bevel pinion. The front-wheel differential gear assembly include; a front-wheel differential case fixed to one of the central side bevel gears; a front-wheel pinion cross shaft fixed to the front-wheel differential case; front-wheel differential bevel pinions mounted rotatably on the front wheel pinion cross shaft; front-wheel side bevel gears engaging with the front wheel differential bevel pinions and being secured to front wheel shafts. A second of the central side bevel gear has a hollow shaft portion within which one of the front shafts is inserted and a hub case is fixed to the hollow shaft portion of the second of central side bevel gear. The ring gear fixed to the hub case and the ring gear engages with the bevel gear which is connected to a propeller shaft. The ring gear is located apart from the central differential gear assembly and is located adjacent to the central longitudinal line of the vehicle.