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:
Mar. 30, 2004
Filed:
Mar. 14, 2002
Ahmed A. Hassan, Mesa, AZ (US);
David B. Domzalski, Gilbert, AZ (US);
Bruce Dean Charles, Mesa, AZ (US);
Ram Damaraju JanakiRam, Mesa, AZ (US);
The Boeing Company, Chicago, IL (US);
Abstract
A linear electromagnetic zero net mass jet (ZNMJ) actuator incorporating a pair of permanent magnets. The magnets are arranged such that an air gap is formed therebetween and further such that opposite poles of the magnets are arranged on opposite sides of the air gap. This concentrates the flux field across the air gap. A coil is disposed in the air gap. The coil is attached to a diaphragm which acts as a piston. When an electric current is applied to the coil, the flux field across the air gap causes a rapidly oscillating motion of the diaphragm. The actuator provides an increased rate of displacement of the piston as compared to single magnet ZNMJ actuators, and thus provides a higher momentum output across a broad frequency and voltage spectrum than conventional ZNMJ actuators using a single magnet.