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:
Jul. 12, 2011
Filed:
May. 07, 2008
Jean-claude Vannier, Malakoff, FR;
Francois Dugue, Pompertuzat, FR;
Francois Roux, Gaure, FR;
Isabelle Gibek, L'Union, FR;
Denis Schwander, Labarthe sur Leze, FR;
Jean-Claude Vannier, Malakoff, FR;
Francois Dugue, Pompertuzat, FR;
Francois Roux, Gaure, FR;
Isabelle Gibek, L'Union, FR;
Denis Schwander, Labarthe sur Leze, FR;
Centre National d'Etudes Spatiales (C.N.E.S.), Paris, FR;
Abstract
The invention relates to an electromagnetic actuator with variable reluctance comprising a fixed ferromagnetic armature () comprising at least two concentric cylinders of revolution linked by a ring nut, at least one magnetizing winding () arranged between said cylinders, a ferromagnetic moving armature () guided in reciprocating translation movements relative to said fixed armature (), with which it defines a magnetic circuit with an air gap (), the dimension of which varies during reciprocating translation movements of the moving armature (), wherein said fixed armature () comprises at least two series of slots, a first series of slots provided radially in said outer cylinder and extending over the entire height of said outer cylinder, and a second series of slots provided radially in said outer and inner cylinders and extending only over a major part of the height of said cylinders.