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:
Jun. 26, 2001
Filed:
May. 01, 2000
Peter Brenner, Friedrichshafen, DE;
Martin Budaker, Friedrichshafen, DE;
Willi Nagel, Friedrichshafen, DE;
Uwe Loreit, Friedrichshafen, DE;
ZF Friedrichshafen AG, Friedrichshafen, DE;
Abstract
An electrically assisted power steering system for motor vehicles includes an input shaft (,), which is operatively connected to a steering wheel, for transmitting a steering torque required to steer the vehicle wheels that are to be steered. An output member is operatively connected to the wheels to be steered. A servomotor (,), by which an auxiliary force can be exerted on the input shaft (,) or the output member, is disposed in the power steering system. The input shaft (,) and the output member are connected to one another via a torsion bar (,). A detection unit for detecting a steering torque acting on the input shaft (,) includes one magnetic ring (,) each, connected to the input shaft (,) and the output member, and one associated sensor (,) each. Each magnetic ring (,) has the same number of magnetic pole pairs. Each magnetic ring (,) is assigned a sensor (,), structurally connected to the housing, by which both the steering torque and the rotary speed of the input shaft (,) are detected.