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:
Aug. 17, 1999
Filed:
Nov. 26, 1997
Katsuhiko Motosugi, Toyota, JP;
Kiyoharu Tsuda, Anjo, JP;
Otics Corporation, Aichi, JP;
Abstract
A variable valve system according to the present invention comprises a solid cam having a cam profile continuously varying in axial direction of a cam shaft in a range from lower revolutions to higher revolutions of an internal combustion engine, a displacement device for axially displacing the solid cam continuously or stepwise, and an arm that swings in accordance with the cam profile of the solid cam to open and close a valve. The arm is provided with a cam contacting mechanism that is formed of a seat and a cam contacting portion. The cam contacting portion is fitted into the seat such that the cam contacting portion contacts the solid cam and follows changes in inclination of a tangential line defined by the cam contacting portion and the solid cam when the solid cam rotates.