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:
Feb. 13, 2024
Filed:
May. 14, 2019
Hitachi Astemo, Ltd., Hitachinaka, JP;
Toshihiro Inuzuka, Ebina, JP;
Urban Anta Carlos, Schwaig-Oberding, DE;
Atsushi Maeda, Fujisawa, JP;
Koji Minamino, Fukushima, JP;
Aakash Patwa, Canton, MI (US);
HITACHI ASTEMO, LTD., Ibaraki, JP;
Abstract
A cylinder apparatus is provided with a stopper mechanism that operates when a piston rod extends and moves toward an upper end portion in an inner cylinder. This stopper mechanism includes a second cylinder provided movably relative to the piston rod and including a bottom portion on an upper end side in the inner cylinder and a cylinder portion extending from the bottom portion toward a lower end side, and a second piston provided so as to be able to move along with a movement of the piston rod to be fitted to the second cylinder. While being configured in this manner, the cylinder apparatus is configured in such a manner that a spring memberis provided between the second cylinder and a rod guide.