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:
Apr. 22, 2008
Filed:
Oct. 04, 2005
Eric A. Smay, Warren, MI (US);
Simon Dean, West Bloomfield, MI (US);
Eric A. Smay, Warren, MI (US);
Simon Dean, West Bloomfield, MI (US);
ArvinMeritor Technology, LLC, Troy, MI (US);
Abstract
A roll control actuator for a stabilizer bar includes an outer housing that is fixed to a first bar portion and a paddle member that is fixed to a second bar portion. The roll control actuator includes multiple fluid chambers with different fluid volumes. A control is used to selectively adjust roll stiffness of the stabilizer bar and includes a control valve in fluid communication with an accumulator. The first and second stabilizer bars can rotate relative to each other when the control valve is open to decrease roll stiffness and provide good ride quality. When the control valve is open, fluid flows freely between the fluid chambers. The first and second bar portions are hydraulically locked together when the control valve is closed to increase roll stiffness during cornering maneuvers. When the control valve is closed, the accumulator is isolated from the roll control actuator and fluid flow through the fluid chambers cannot occur due to differing fluid volumes.