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:
Mar. 24, 2026
Filed:
Sep. 20, 2024
Suzuki Motor Corporation, Hamamatsu, JP;
Hisashi Ozeki, Hamamatsu, JP;
SUZUKI MOTOR CORPORATION, Hamamatsu, JP;
Abstract
A variable valve device changes a valve lift amount in a cylinder head. The device includes: a camshaft having plural cams with different valve lift amounts; plural rocker arms in contact with the plural cams to move a valve; a switching mechanism that couples and separates the rocker arms by oil pressure; and an oil control valve that controls the oil pressure. The switching mechanism includes a hydraulic piston moveable forward and backward to couple and separate the rocker arms. First and second oil passages extend from the oil control valve to the hydraulic piston. The first oil passage includes an oil groove allowing oil to pass at a predetermined rotation phase of the camshaft. The second oil passage is opened and closed during forward and backward movement of the hydraulic piston. A bypass passage is provided for bypassing the oil groove when the second oil passage is closed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile