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:
Feb. 05, 2002
Filed:
Apr. 23, 2001
Masahiro Uchida, Iwata, JP;
Yamaha Hatsudoki Kabushiki Kaisha, Iwata, JP;
Abstract
An improved journaling and sensor mounting arrangement for the VVT mechanisms of a twin overhead cam engine. By utilizing a combined single bearing cap for the VVT ends of the camshafts that mounts the sensors that are associated with timing wheels on the respective camshafts, it is possible to maintain a very neat external appearance and a compact construction. Also, high accuracy can be obtained because of the positive rotation of the components. In addition, a simplified oil supply and control arrangement is also disclosed for lubricating the thrust surfaces of the camshaft bearings and other bearing surfaces as well as supplying hydraulic fluid to the VVT mechanisms.