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. 19, 1994
Filed:
Mar. 09, 1993
Richard E Eastman, Central Square, NY (US);
Robert J Wilson, Warners, NY (US);
David Sperduti, Auburn, NY (US);
Randy W Adler, Seneca Falls, NY (US);
New Venture Gear, Inc., Troy, MI (US);
Abstract
The present invention provides a power transfer system for a four-wheel drive vehicle which permits the vehicle operator to choose between operation in conventional two-wheel drive and four-wheel drive modes or an 'on-demand' four-wheel drive mode. The power transfer system is operable for disabling the on-demand four-wheel drive feature upon the vehicle operator subsequently shifting into either of the two-wheel drive and the four-wheel drive modes. The system includes a transfer mechanism having a first and second output members coupled to first and second sets of wheels, respectively. The transfer mechanism has a transfer clutch that is operable for transferring drive torque from the first output member to the second output member to establish the part-time four-wheel drive and on-demand modes. A coupling mechanism is provided for mechanically coupling the first and second output members under certain conditions.