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. 13, 1996
Filed:
Aug. 01, 1994
David C Gustin, Rockton, IL (US);
Dana Corporation, Toledo, OH (US);
Abstract
A vehicle drive train transfer case includes a differential with an input and two outputs, a normally disengaged electromagnetic first clutch, and a normally engaged second clutch adapted to be electromagnetically disengaged. When the first and second clutches are disengaged and engaged, respectively, torque is transmitted via the differential to the rear axle of the vehicle without torque being transmitted to the front axles so as to propel the vehicle in a two-wheel drive mode. When both clutches are engaged, the differential is locked so as to cause torque to be transmitted to both the front and rear axles and effect propelling of the vehicle in a conventional four-wheel drive mode. When the first and second clutches are engaged and disengaged, respectively, the differential is unlocked to enable torque to be transmitted to both the front and rear axles in an all-wheel drive mode.