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:
Jul. 03, 2018
Filed:
Mar. 27, 2014
Hitachi Automotive Systems, Ltd., Hitachinaka-shi, Ibaraki, JP;
Mikio Yamashita, Zama, JP;
Kunio Takiguchi, Yokohama, JP;
Hitachi Automotive Systems, Ltd., Ibaraki, JP;
Abstract
A minimum length-side property in which an extension-side damping coefficient signifies a hard state in a range (Aa) where the piston rod enters further inside the cylinder than a minimum length-side predetermined position (Sa), and a maximum length-side property in which the extension-side damping coefficient signifies a soft state in a range (Aa) where the piston rod extends further outside the cylinder than a maximum length-side predetermined position (Sa) are included. An extension-side damping force property between the minimum length-side predetermined position (Sa) and the maximum length-side predetermined position (Sa) includes a part (Sato Sa, Sato Sa) in which a damping coefficient change rate with respect to a stroke of the piston rod is large and a part (Sato Sa) in which the damping coefficient change rate is small. At least when the piston rod strokes to the extension side from the minimum length-side predetermined position (Sa), the damping coefficient change rate is allowed to be large.