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. 21, 2025
Filed:
Dec. 14, 2023
Goodrich Actuation Systems Limited, Wolverhampton, GB;
Zbigniew Jaskiewicz, Wroclaw, PL;
Kamil Mastalerz, Wroclaw, PL;
GOODRICH ACTUATION SYSTEMS LIMITED, West Midlands, GB;
Abstract
A two-stage servo valve comprising a first drive stage and a second fluid transfer stage. The fluid transfer stage includes a housing having a plurality of ports and a spool axially moveable within an axial cavity defined within the housing to control flow of fluid between the plurality of ports according to the axial position of the spool, wherein the drive stage is configured to cause axial movement of the spool. The housing has three ports, a first port being a supply port fluidly connected to a second port, being a control port, via a supply channel (sc) and a first control channel (cc) via the spool cavity, and a third port being a return port fluidly connected to the control port via a return channel (rc) and a second control channel (cc) via the spool cavity.