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. 21, 2017
Filed:
Jul. 29, 2015
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Takamasa Suzuki, Nissin, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, JP;
Abstract
A cam of a variable valve device is provided with a change region, which is a region with which a roller abuts when a control shaft is displaced in an axial direction to change a maximum lift amount and in which a cam surface is inclined such that a diameter of the cam gradually increases toward one side in a rotation direction. The cam is provided with a retainer region with which the roller abuts when a position of the control shaft in the axial direction is retained to retain the maximum lift amount. An inclination angle of the cam surface in the retainer region is smaller as the maximum lift amount when the action member abuts with the retainer region is larger.