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. 20, 1999
Filed:
Jan. 31, 1996
Tamas Imre Pattantyus, North Olmstead, OH (US);
AlliedSignal Truck Brake Systems Company, Elyria, OH (US);
Abstract
A multi-channel wheel speed sensor having a custom integrated interface circuit. The interface circuit is configured with voltage programmable threshold adjustment allowing the circuit sensitivity to be specially tuned to detect wheel speeds in very specific ranges for a variety of applications. This feature can be implemented in ABS and/or traction control systems wherein in ABS mode a lower sensitivity adjustment can be used since wheel speeds below 5 mph do not need to sensed and processed precisely and in traction control mode very low wheel speeds, 1-1.5 mph are sensed and processed especially at non-drive wheels which provide speed reference for slipping or spinning drive wheels. The interface circuit is also configured with a test circuit for testing the integrity of the speed sensors and for providing information to the controller about the sensor/tone wheel gap.