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:
Apr. 08, 1986
Filed:
Mar. 22, 1984
Mazda Motor Corporation, Hiroshima, JP;
Abstract
A valve mechanism for an internal combustion engine has a valve and a cam on a camshaft for operating the valve. A swingable member is provided for swinging movement about the camshaft and has a tappet receiving hole. A tappet slidably received in the hole is driven by the cam and in turn drives the valve. The valve timing can be changed by swingably moving the swingable member. A control device is provided for holding the swingable member at a position wherein the direction of movement of the tappet is aligned with the direction of movement of the valve under a heavy load, high speed engine operation and moving the swingable member to another position wherein the direction of movement of the tappet is inclined with respect to the direction of movement of the valve under a light load, low speed operation to change the valve timing.