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:
Dec. 28, 2004
Filed:
Sep. 19, 2003
Yakov Fleytman, Orion, MI (US);
Carl D. Schleuder, Novi, MI (US);
New Venture Gear, Inc., Troy, MI (US);
Abstract
A torque transfer system is disclosed which is particularly well-suited for use in four-wheel drive transfer cases to establish distinct two-wheel and four-wheel drive modes as well as providing an automatic (“on-demand”) four-wheel drive mode. The torque through system includes a planetary gearset having a first component driven by an input member, a second component driving an output member, and a third component driven by a worm gearset. The worm gearset includes a worm gear fixed for rotation with the third component and a worm meshed with the worm gear. A variable speed motor drives the worm for varying the speed ratio between the first and third components of the planetary gearset, thereby causing a corresponding variation in the drive torque transferred from the input member to the output member.