公开(公告)号：US20180051814A1

公开(公告)日：2018-02-22

申请号：US15591582

申请日：2017-05-10

Applicant: Hamilton Sundstrand Corporation

Inventor： Piotr Kozlowski ,  Michal Bielen ,  Wojciech Plucinski

IPC: F16K11/065 ,  F16K31/04

Abstract: A servovalve comprising: a fluid transfer valve assembly comprising a supply port and a control port; a moveable valve spool arranged to regulate flow of fluid from the supply port to the control port in response to a control signal; and a drive member configured to axially move the valve spool relative to the fluid transfer assembly in response to the control signal to regulate the fluid flow.

公开(公告)号：US20180346129A1

公开(公告)日：2018-12-06

申请号：US15992236

申请日：2018-05-30

Applicant: Hamilton Sundstrand Corporation

Inventor： Piotr Kozlowski ,  Piotr Sawicki

IPC: B64D13/04 ,  F16K31/06 ,  F16K11/076

Abstract: A servo valve for an actuator is described. The servo valve comprises a housing and a sleeve provided within the housing having a plurality of metering holes for communication with a cavity within. The servo valve further comprising a metering rod provided with metering members on a central rod for metering flow into and out of the cavity through the metering holes. The metering members comprise annular elements which are located axially on the central rod by an interference fit. The position of the metering members can be adjusted through using heat to thermally expand the metering member relative to the central rod to release the hold of the friction fit, allowing the metering member to be repositioned by being slid along the central rod.

公开(公告)号：US20180346128A1

公开(公告)日：2018-12-06

申请号：US15992227

申请日：2018-05-30

Applicant: Hamilton Sundstrand Corporation

Inventor： Piotr Kozlowski ,  Piotr Sawicki

IPC: B64D13/04 ,  F16K31/06 ,  F16K11/076

CPC classification number: F16K41/12 ,  F16K11/0708 ,  F16K11/0716 ,  F16K27/041 ,  F16K27/048 ,  F16K31/0613 ,  F16K31/0675 ,  H01F7/13

Abstract: A servo valve for an actuator is described. The servo valve comprises a housing having a plurality of ports, a sleeve disposed within the housing, the sleeve comprising an axis (A), an inner surface defining a cavity for the servo valve and a plurality of metering holes, each in communication with one of the ports, and a metering rod extending axially in the cavity for reciprocation along the axis to meter flow through the metering holes. The servo valve additionally comprises a first spring seal extending between the metering rod and the sleeve to close off a first end of the cavity and a second spring seal extending between the metering rod and the sleeve to close off a second, opposite end of the cavity.

公开(公告)号：US10711811B2

公开(公告)日：2020-07-14

申请号：US16100240

申请日：2018-08-10

Applicant: Hamilton Sundstrand Corporation

Inventor： Piotr Kozlowski ,  Piotr Sawicki

IPC: F16K31/36 ,  F15B13/043

Abstract: The present disclosure relates to a servovalve assembly comprising a pair of opposed nozzles spaced apart by a first gap. A control element positioned in the first gap (G) between the pair of opposed nozzles. Each nozzle has an outlet opening. The control element has a central control portion and two resiliently deformable end portions at opposite ends of the central control portion. The central control portion is perpendicular to a central axis (C) of each nozzle outlet opening. The control element is configured such that the two resiliently deformable end portions elastically deform when the control element is placed under tension by a force applied parallel to the central control portion, so as to move the control element in a direction parallel to the central axis (C) of each nozzle outlet opening.

公开(公告)号：US20190048900A1

公开(公告)日：2019-02-14

申请号：US16100240

申请日：2018-08-10

Applicant: Hamilton Sundstrand Corporation

Inventor： Piotr Kozlowski ,  Piotr Sawicki

IPC: F15B13/043 ,  F16K31/36

Abstract: The present disclosure relates to a servovalve assembly comprising a pair of opposed nozzles spaced apart by a first gap. A control element positioned in the first gap (G) between the pair of opposed nozzles. Each nozzle has an outlet opening. The control element has a central control portion and two resiliently deformable end portions at opposite ends of the central control portion. The central control portion is perpendicular to a central axis (C) of each nozzle outlet opening. The control element is configured such that the two resiliently deformable end portions elastically deform when the control element is placed under tension by a force applied parallel to the central control portion, so as to move the control element in a direction parallel to the central axis (C) of each nozzle outlet opening.

公开(公告)号：US11214375B2

公开(公告)日：2022-01-04

申请号：US15992227

申请日：2018-05-30

Applicant: Hamilton Sundstrand Corporation

Inventor： Piotr Kozlowski ,  Piotr Sawicki

IPC: F16K31/06 ,  B64D13/04 ,  F16K41/12 ,  F16K27/04 ,  F16K11/07 ,  H01F7/08 ,  F16K11/076

Abstract: A servo valve for an actuator is described. The servo valve comprises a housing having a plurality of ports, a sleeve disposed within the housing, the sleeve comprising an axis (A), an inner surface defining a cavity for the servo valve and a plurality of metering holes, each in communication with one of the ports, and a metering rod extending axially in the cavity for reciprocation along the axis to meter flow through the metering holes. The servo valve additionally comprises a first spring seal extending between the metering rod and the sleeve to close off a first end of the cavity and a second spring seal extending between the metering rod and the sleeve to close off a second, opposite end of the cavity.

公开(公告)号：US10683943B2

公开(公告)日：2020-06-16

申请号：US15591582

申请日：2017-05-10

Applicant: Hamilton Sundstrand Corporation

Inventor： Piotr Kozlowski ,  Michał Bieleń ,  Wojciech Plucinski

IPC: F16K11/07 ,  F16K31/04 ,  F15B13/044 ,  F15B13/043 ,  F15B13/04 ,  F16K31/52

Abstract: A servovalve comprising: a fluid transfer valve assembly comprising a supply port and a control port; a moveable valve spool arranged to regulate flow of fluid from the supply port to the control port in response to a control signal; and a drive member configured to axially move the valve spool relative to the fluid transfer assembly in response to the control signal to regulate the fluid flow.

公开(公告)号：US20180051821A1

公开(公告)日：2018-02-22

申请号：US15591618

申请日：2017-05-10

Applicant: Hamilton Sundstrand Corporation

Inventor： Piotr Kozlowski ,  Piotr Sawicki

IPC: F16K31/04

CPC classification number: F15B13/0438 ,  F15B9/07 ,  F16K11/074 ,  F16K27/044 ,  F16K31/04

Abstract: A servovalve comprising: a fluid transfer valve assembly comprising a supply fluid port and a control port; and a moveable valve member arranged to regulate flow of fluid from the supply fluid port 4 to the control port in response to a control signal; wherein the fluid transfer valve assembly comprises a housing in which the supply fluid port and the control port are formed, and an insert positioned in the housing into which the moveable valve member extends and in which a fluid flow path is formed between the supply fluid port and the control port.

公开(公告)号：US11174962B2

公开(公告)日：2021-11-16

申请号：US15992243

申请日：2018-05-30

Applicant: Hamilton Sundstrand Corporation

Inventor： Piotr Kozlowski ,  Piotr Sawicki

IPC: F16K31/06 ,  F16K11/07 ,  F16K41/12 ,  F16K27/04 ,  H01F7/08 ,  B23P15/00 ,  B64D13/00

Abstract: A servo valve for an actuator comprises a housing, a sleeve provided within the housing comprising an axis (A) and having a plurality of metering holes for communication with a cavity within. A metering rod extends within the cavity for metering flow of pneumatic fluid through the metering holes. The metering rod is coupled to a drive unit for axial movement within the cavity, the drive unit comprising a drive unit housing, a solenoid and an adjustable core. The adjustable core comprises a threaded first portion having a thread and a second portion. The thread of the first portion engages a thread extending through the drive unit housing for adjustment of the relative position of the adjustable core with respect to the solenoid.

公开(公告)号：US11049636B2

公开(公告)日：2021-06-29

申请号：US16140954

申请日：2018-09-25

Applicant: Hamilton Sundstrand Corporation

Inventor： Piotr Sawicki ,  Piotr Kozlowski

IPC: H01F7/00 ,  H01F7/122 ,  F16K31/06 ,  F16K27/02 ,  F16K31/08 ,  H01F7/14 ,  H01F7/127 ,  H02K26/00 ,  F15B9/09 ,  F15B13/043 ,  H01F7/02 ,  H02K33/00 ,  H01F7/08

Abstract: A torque motor for use in a servovalve wherein only two holes must be provided through each of the pole pieces in order to assemble the torque motor together. The torque motor comprises first and second opposing pole pieces, first and second permanent magnets positioned between the first and second pole pieces; an armature comprising a magnetic plate and a flapper, the magnetic plate being positioned between the first and second permanent magnets, the flapper being connected at one end to the magnetic plate; and further comprising: first and second fastening means each extending through the first pole piece, the armature and the second pole piece to thereby fasten the torque motor together.