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:
Oct. 23, 2007
Filed:
May. 21, 2004
James J. Burns, Whitmore Lake, MI (US);
Wayne V. Denny, Alliance, OH (US);
Mark A. Joki, Dover, OH (US);
Mark E. Lacroix, New Hartford, CT (US);
Brian Thomas Odegard, Ypsilanti, MI (US);
Alfred John Santos, Farmington, CT (US);
Orestes J. Varonis, North Canton, OH (US);
James J. Burns, Whitmore Lake, MI (US);
Wayne V. Denny, Alliance, OH (US);
Mark A. Joki, Dover, OH (US);
Mark E. LaCroix, New Hartford, CT (US);
Brian Thomas Odegard, Ypsilanti, MI (US);
Alfred John Santos, Farmington, CT (US);
Orestes J. Varonis, North Canton, OH (US);
Timken US Corporation, Torington, CT (US);
Abstract
A device for sensing the input shaft speed of an automotive automatic transmission that is driven by the engine through the fluid coupling of a torque converter. The speed sensor device includes circumferentially spaced markings about the transmission input shaft and a speed sensor that is placed at close proximity to the circumferentially spaced markings through a hole in the torque converter stator shaft. An electronic control unit (ECU) analyzes the sensor output signal and in the case of an active speed sensor it also functions as its power source. During vehicle operation, the transmission input shaft rotates the target wheel in front of the speed sensor causing modulation of its output signal. The electronic control unit analyzes the signal modulation and calculates the input shaft rotational speed. A variety of sensor/target-wheel options and sensor mounting techniques could be used depending on the application constraints.