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:
Mar. 31, 2020
Filed:
Feb. 23, 2018
China Automotive Systems, Inc., Wuhan, CN;
Other;
Abstract
A control assembly () for overcoming a rotational resistance required to activate supplementary steering force associated with conventional power steering systems. The control assembly () includes a shaft () subject to rotational resistance via a torsion bar (). A valve assembly () has a first hydraulic circuit () that is interchangeable from an unassisted condition () to an assisted condition () for providing supplementary steering force to a steering gear after the rotational resistance of the torsion bar () is overcome by rotating the shaft (). An actuator () includes a second hydraulic circuit () interchangeable from an unengaged condition () to an engaged condition () applying circumferential force on the shaft () to overcome the rotational resistance of the torsion bar () and rotate the shaft () from a non-rotated position thereby activating the supplementary force of the first hydraulic circuit ().