公开(公告)号：US20170248251A1

公开(公告)日：2017-08-31

申请号：US15518349

申请日：2015-09-30

Applicant: Moog Inc.

Inventor： John KOPP ,  Christopher MAZURKIEWICZ

IPC: F16K31/42 ,  F16K31/08 ,  F16K31/04 ,  F15B13/043 ,  F15B13/044

CPC classification number: F16K31/426 ,  F15B13/043 ,  F15B13/0435 ,  F15B13/0444 ,  F16K31/047 ,  F16K31/082

Abstract: A servovalve (15) comprising a motor (16), a motor bias mechanism (20), a first stage valve member (22) adapted to be moved from a first position to a first off-null position, a second stage member (29) adapted to be moved from a first position to a second position with movement of the first valve member (22), a transfer link (34) acting between the first (22) and second (29) valve members, an eccentric drive member (35) acting between the motor (16) and the transfer link (34), the transfer link (34) and drive member (35) configured such that selective movement of the motor (16) causes the transfer link (34) to move the first valve member (22), movement of the first valve member (22) causes the second valve member (29) to move, and movement of the second valve member (29) causes the transfer link (34) to move the first valve member (22) from the first off-null position back to the null position.