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:
Dec. 17, 2013
Filed:
Sep. 08, 2011
Joel Donahue, Novi, MI (US);
Joel Donahue, Novi, MI (US);
Hitachi Automotive Systems Americas Inc., Harrodsburg, KY (US);
Abstract
A shock absorber having an elongated pressure tube and a piston slidably mounted in the pressure tube which divides the pressure tube into a first and second working chamber. An elongated piston rod is attached to the piston and moves in unison with the piston in both an extended and a compression direction. Movement of the rod in a compression direction decreases the volume of the first working chamber and increases the volume of the second working chamber, and vice versa. A control orifice and adaptive valve are fluidly connected in series between the first working chamber and a reservoir. A check valve is fluidly connected between the control orifice and the adaptive valve which opens only upon movement of the rod in a compression direction.