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. 06, 2002
Filed:
Sep. 21, 2000
Magneti Marelli S.p.A., Milan, IT;
Abstract
An electromagnetic actuator for the control of the intake or exhaust valves of an internal combustion engine, in which an oscillating arm has a first end hinged on a fixed support and a second end in abutment, directly or via the interposition of a strut, on the upper end of the stem of the intake or exhaust valve, two electromagnets being provided in order to move, on command, the oscillating arm so as axially to displace the valve between a closed position and a position of maximum opening, a first and a second elastic member being provided to maintain the intake or exhaust valve respectively in the closed position and in the position of maximum opening, by exerting on the valve axial thrusts contrary to one another; in the balanced position, the two elastic members are adapted to maintain the valve in an intermediate position between the closed position and the position of maximum opening.