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:
Aug. 14, 2001
Filed:
Dec. 08, 1999
Frank Peter Engels, Solingen, DE;
Paul Hein, Solingen, DE;
Volker W. Lorenz, Neu-Ulm, DE;
Herbert Meckel, Erkrath, DE;
Ekkehard Boldt, Bergheim, DE;
Visteon Global Technologies, Inc., Dearborn, MI (US);
Abstract
In an electric power-steering gear, in particular for motor vehicles, having a steering shaft (,) which is actuated by a steering wheel and which forms an input for a step-down gear in the form of a harmonic drive (,) and which makes available an output, in the form of a steering element (,), to a conventional steering gear, sensors which output a signal for the steering torque which is applied being arranged on the steering shaft (,) in a known fashion, and said sensors leading, via a corresponding amplifier circuit, to an electric motor (,) which is arranged coaxially with respect to the steering shaft (,) and the steering element (,), the stator of the electric motor (,) is arranged fixed in terms of rotation in the externally toothed flexible rotor (,) and the elliptical driver (,) of the harmonic gear (,) acting, as a result of the elastically deformable, externally toothed flexible rotor (,), with migrating engagement on the internally toothed annular stator (,), which is fixed in position, and the flexible rotor (,) exerting a an auxiliary force on the steering element (,).