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:
Jan. 13, 2004
Filed:
Oct. 10, 2002
Masahiko Watanabe, Yokohama, JP;
Naotaka Nakura, Kanagawa, JP;
Hitachi Unisia Automotive, Ltd., Atsugi, JP;
Abstract
A valve timing control apparatus including a drive rotary member, a driven rotary member and an intermediate rotary member rotatable relative to the drive and driven rotary members. A follower is moveably engaged with a radial guide of one of the drive and driven rotary members and a spiral guide of the intermediate rotary member. An actuator rotates the intermediate rotary member to allow a movement of the follower along the radial guide which is converted into relative rotation of the drive and driven rotary members via a link coupling the follower with the other of the drive and driven rotary members. A lubricating oil chamber is arranged to surround an engagement portion between the spiral guide and the follower and pivotal connection portions between one end of the link and the other of the drive and driven rotary members and between an opposite end thereof and the follower.