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
Electromagnetic actuator of an improved type for controlling the valves for induction or exhaust of an internal-combustion engine, wherein an oscillating arm has a first end which is pivoted on a support frame which is secured to the head of the engine, and a second end which abuts the upper end of the stem of the valve for induction or exhaust; two electromagnets being provided to move the oscillating arm by command, such as to displace the said valve axially, between a position of closure and a position of maximum opening; the frame being pivoted on the head of the engine, such as being able to rotate around an axis of rotation, which is perpendicular to the axis of movement of the valve for induction or exhaust, and the electromagnetic actuator also being provided with a device to regulate the position of the frame relative to the head, which device can rotate the said frame by command around the said axis of rotation, such as to be able to maintain at a pre-determined value the mechanical play which exists between the second end of the oscillating arm, and the upper end of the stem of the valve.