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:
Nov. 04, 2025
Filed:
Aug. 10, 2022
Applicant:
Komatsu Ltd., Tokyo, JP;
Inventors:
Assignee:
KOMATSU LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F15B 15/14 (2006.01);
U.S. Cl.
CPC ...
F15B 15/1447 (2013.01); F15B 15/149 (2013.01);
Abstract
A hydraulic cylinder includes a cylinder tube, a piston rod that has a rod end portion disposed inside the cylinder tube and moves in an axial direction, a first rod passage that is formed inside the piston rod and connects a hydraulic source and a first opening formed in the rod end portion, a plug that is inserted into the first rod passage through the first opening, and a piston that is fixed to the piston rod in a state of covering at least a part of the plug and partitions an inside of the cylinder tube into a bottom chamber on one side in the axial direction and a head chamber on the other side in the axial direction.