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:
Oct. 18, 2005
Filed:
Feb. 05, 2004
Walter Kill, Friedrichshafen, DE;
Jürgen Halter, Friedrichshafen, DE;
Hubert Remmlinger, Friedrichshafen, DE;
Karlheinz Mayr, Bregenz, DE;
Walter Kill, Friedrichshafen, DE;
Jürgen Halter, Friedrichshafen, DE;
Hubert Remmlinger, Friedrichshafen, DE;
Karlheinz Mayr, Bregenz, DE;
ZF Friedrichshafen AG, Friedrichshafen, DE;
Abstract
An electromagnetic dual-action control valve with a housing (), with connections () for inflow and outflow lines for a pressure medium, with a solenoid () and with two armatures arranged to move within the solenoid () for opening and closing the line connections. To simplify the structure of such a dual-action control valve, it is provided that one of the armatures is formed as a hollow armature () with a closed end (), within which an inner armature () is arranged to move coaxially, and the hollow armature () has openings () for the pressure medium, of which one opening () can be closed by a sealing surface () of the inner armature ().