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:
Oct. 07, 2003
Filed:
Feb. 13, 2002
Souhei Honda, Saitama, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A four-cycle OHC engine includes timing transmitting device that includes a driven wheel formed integrally with a valve-operating cam and that is disposed between a valve operation system and a crankshaft. The valve operation system includes the valve-operating cam, which is rotatably supported on a support shaft that is supported in an engine main body. Lubricating oil is supplied to a valve operation chamber. Provided between the upper part of the engine main body and one end of the support shaft is an oil intake passage in which the upper end opens upward on the base of the valve operation chamber and the lower end is closed. Provided on the outside of the lower part of the support shaft is a flat surface for forming an oil passage between the flat surface and the valve-operating cam and driven wheel. One end of the oil passage communicates with the oil intake passage, and the other end of the oil passage opens downward and communicates with a housing passage. Therefore, a sufficient amount of oil can be supplied to a lubrication area between the support shaft and the valve-operating cam and the driven wheel while employing a splash lubrication system.