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:
Oct. 20, 2026
Filed:
Apr. 04, 2023
Komatsu Ltd., Tokyo, JP;
KOMATSU LTD., Tokyo, JP;
Abstract
A hydraulic valve includes: a valve main body having a first port and a second port; and a spool movable along an axial center with respect to the valve main body. Further, the spool is provided with a main passage portion, a first passage portion, and a second passage portion, an opening area of the first passage portion with respect to the first port is changed, and flow rate control of oil from the first port to the second port through the main passage portion is performed, a plurality of the first passage portions is provided in the spool in, and the main passage portion of the spool has a first region, a second region, and a third region, an inner diameter of the first region being formed larger than that of the second region, and the third region being formed in a tapered shape.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile