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. 11, 2017
Filed:
Feb. 13, 2013
Liebherr-aerospace Lindenberg Gmbh, Lindenberg/Allgäu, DE;
Liebherr-Aerospace Lindenberg GmbH, Lindenberg/Allgäu, DE;
Abstract
The invention relates to a servo valve, in particular a two-stage or multistage electrohydraulic servo valve, having a first stage which works as a pilot stage, and a second stage which works as a power stage, wherein the second stage has a valve block and a control slide valve sleeve arranged therein and having a jacket surface (), wherein the jacket surface and/or another region of the control slide valve sleeve is preferably provided with at least one flow passage for transferring control flow and/or volume flow, and wherein a control slide valve is movably arranged in the control slide valve sleeve, wherein at least one of the flow passages is formed by a groove which is arranged in the surface of the control slide valve sleeve and which does not extend sectionally or overall in the peripheral direction of the control slide valve sleeve.