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:
Jul. 02, 1996
Filed:
Jan. 13, 1995
Mark C Barnholt, Fort Wayne, IN (US);
Dana Corporation, Toledo, OH (US);
Abstract
A selectively lockable differential assembly comprising a rotatable case, first and second output shafts journalled in the case for rotation relative thereto, and a differential mechanism disposed within the case and linking the two output shafts so as to permit differential rotation between the two shafts. The assembly further includes first and second clutches each connected to the case and coupled with one of the output shafts. The differential mechanism includes a pinion shaft, upon which spaced apart pinion gears are rotatably mounted, and a pair of side gears rigidly affixed to corresponding ones of the output shafts, which meshingly engage the pinion gears. The pinion shaft includes a cam portion disposed between the inboard ends of the two output shafts. Rotation of the pinion shaft about its longitudinal centerline axis engages the two clutches and therefore limits differential rotation between the two output shafts. The pinion shaft is rotated by an actuator assembly which includes a shift arm extending through a window formed in the case and having one end attached to the pinion shaft and the opposite end engaging a shift collar piloted on an exterior surface of the case. A shift fork partially encircles the shift collar and is attached to a linear actuator which preferably comprises a vacuum motor. The differential assembly may be rotatably supported within an axle carrier housing or a transfer case.