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:
May. 15, 2001
Filed:
Jan. 20, 1999
Dan J. Showalter, Plymouth, MI (US);
Carl Randall Vogt, Raleigh, NC (US);
John S. Sewell, Muncie, IN (US);
Paul G. Kowaleski, Clawson, MI (US);
Rodney E. Barr, Cary, NC (US);
Michael Wayne Miller, Raleigh, NC (US);
Thomas P. Knox, Dearborn, MI (US);
Richard K. Rader, Laguna Hills, CA (US);
Scott Wood, Westland, MI (US);
BorgWarner Inc., Troy, MI (US);
Abstract
Shift control assembly for a power transmission device includes an electric drive motor and gear train having an output which is coupled to and bi-directionally rotates a shift rail. The shift rail includes a pair of spaced-apart cam followers. Freely rotatably receiving the shift rail and disposed thereon between the cam followers is a shift fork assembly. The shift fork assembly includes a body having a pair of spaced-apart helical cam surfaces engaged by the cam followers and a fork engaging a shift clutch collar. As the shift rail rotates bi-directionally, the shift fork assembly and clutch collar bi-directionally translate. A circular plate is disposed for rotation with the shift rail and includes an array of apertures. A plurality of sensors are disposed in adjacent, sensing relationship to the circular plate. As the circular plate and shift rail rotate, the sensors generate unique combinations of signals corresponding to a plurality of specific angular positions of the shift rail and translational positions of the shift fork.