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:
Sep. 23, 2003
Filed:
Oct. 24, 2001
Andrew Brian Lovatt, Novi, MI (US);
BorgWarner, Inc., Troy, MI (US);
Abstract
A chain sprocket assembly for use in a motor vehicle transfer case having an inter-axle differential includes a torque limiting clutch which limits the torque provided to a secondary drive line. The chain sprocket assembly includes a chain receiving hub having a splined interconnection which drives an outer bell housing having internal splines which drive a first set of friction clutch plates. A second set of friction clutch plates are interleaved with the first set of clutch plates and are splined to and drive a stub shaft. The stub shaft also freely rotatably receives the chain hub and functions as the secondary output to drive a secondary drive line. A biasing spring engages the clutch plates and compresses them and achieves a desired maximum torque throughput from the chain to the secondary output shaft. In operation, the chain sprocket assembly will transmit torque to the secondary output shaft and the secondary drive line up to the preset maximum and which threshold the friction clutch packs will slip, thus limiting torque throughput to the preselected level.