Servo valve
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United States of America Patent
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Jul 11, 2017
Issued Date -
N/A
app pub date -
Feb 13, 2013
filing date -
Feb 14, 2012
priority date (Note) -
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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 (18), 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.
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