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:
Feb. 18, 2014
Filed:
Mar. 23, 2011
Patrik Fuchs, Kirkel, DE;
Patrik Fuchs, Kirkel, DE;
Hydac Electronic GmbH, SaarbrĂĽcken, DE;
Abstract
An electromagnet, in particular a switching magnet, has a field winding () located on a coil former (), and has a pole piece () forming a part of the magnetic return path. A pole core () and an axially movable magnetic piston () are provided within the coil former (). The pole piece () forms an aperture opening () for the magnet piston () on the area opposite the pole core (). The magnet piston () is borne for its movement in its guide in the pole core (). The pole piece () has a flange part () at least partially engaged over the coil former () at its axial end, and has a bush part () which extends axially from it. Within the coil former (), the pole piece forms a hollow cylinder engaged over a longitudinal section of the magnet piston (). Between the inner wall of the hollow cylinder and the circumference of the magnet piston (), a parasitic air gap () is formed.