公开(公告)号：US10859179B2

公开(公告)日：2020-12-08

申请号：US16286761

申请日：2019-02-27

Applicant: Hamilton Sundstrand Corporation

Inventor： Maciej Zak ,  Marek Jedliński

IPC: H02K26/00 ,  F16K31/06 ,  F16K31/124 ,  F15B13/043

Abstract: A torsion bridge for use in a servovalve includes a body extending along and adapted to rotate about a first axis; a passage extending through the body along a second axis substantially perpendicular to the first axis, the passage defining a first cylindrical surface having a radius R1; an annular groove formed in the first cylindrical surface. The annular groove includes: a second cylindrical surface extending substantially in the direction of the second axis, the second cylindrical surface having first and second ends and a radius R2, where R2 is greater than R1; a first annular surface joining the first cylindrical surface to the first end of the second cylindrical surface; and a second annular surface joining the second end of the second cylindrical surface to the first cylindrical surface.

公开(公告)号：US20190390783A1

公开(公告)日：2019-12-26

申请号：US16434209

申请日：2019-06-07

Applicant: Hamilton Sundstrand Corporation

Inventor： Marek Jedlinski ,  Maciej Zak

IPC: F16K11/07 ,  F16K25/00 ,  F16K17/32

Abstract: A nozzle housing for a servo valve includes a circumferential wall defining a return passage extending along a longitudinal axis (A) for holding a return nozzle, the return passage having an opening for fluid communication with a spool valve and a return port for fluid communication with atmosphere, a first plate extending across the return passage, the first plate engaged with the circumferential wall and disposed between the opening and the return port, and a second plate extending across the return passage. The second plate engages with the circumferential wall and disposed between the first plate and the return port, the first plate has at least one first aperture, and the second plate has at least one second aperture that is misaligned with the at least one first aperture such that there is no linear axial flow path between the return port and the opening.

公开(公告)号：US11852174B1

公开(公告)日：2023-12-26

申请号：US17895673

申请日：2022-08-25

Applicant: Hamilton Sundstrand Corporation

Inventor： Maciej Zak ,  Wojciech Plucinski

IPC: F15B13/04 ,  F16K31/00 ,  F15B21/041 ,  F15B13/043 ,  F16K31/124 ,  F16K31/06

CPC classification number: F15B21/041 ,  F15B13/0438 ,  F16K31/0613 ,  F16K31/124

Abstract: A filter assembly for a servo valve that includes a first fluid nozzle defining a first fluid passage therethrough between a first fluid inlet and a first fluid outlet and a second fluid nozzle defining a second fluid passage therethrough between a second fluid inlet and a second fluid outlet. The first and second fluid nozzles arranged in end to end abutment with each other to form a tubular fluid nozzle unit in which the first and second fluid inlets are adjacent each other, and the first and second fluid passages align to form a common fluid passage through the tubular fluid nozzle unit. The first fluid outlet is at a first end of the tubular fluid nozzle unit and the second fluid passage being at a second, end of the tubular fluid nozzle unit.

公开(公告)号：US11306747B2

公开(公告)日：2022-04-19

申请号：US16533836

申请日：2019-08-07

Applicant: Hamilton Sundstrand Corporation

Inventor： Maciej Bujewicz ,  Maciej Zak

IPC: F15B13/04 ,  F15B5/00

Abstract: A single stage flapper type servovalve comprises a valve housing comprising a bore, a pair of opposed nozzles arranged in the bore and a flapper element arranged between the pair of nozzles. The valve housing further comprises a plurality of fluid ports for communicating a working fluid to and from the nozzles and in fluid communication with the housing bore. The valve housing and the nozzles are both made from a stainless steel material.

公开(公告)号：US11226056B2

公开(公告)日：2022-01-18

申请号：US16381045

申请日：2019-04-11

Applicant: Hamilton Sundstrand Corporation

Inventor： Maciej Zak ,  Marek Jedlinski

IPC: F16K49/00 ,  F16K1/18 ,  F16K1/30 ,  H02K26/00

Abstract: There is provided an apparatus comprising a torque motor comprising a spring, armature, flapper assembly (“SAFA”), a body, wherein the spring, armature, flapper assembly is mounted onto the body, and a cap enclosing the spring, armature, flapper assembly. One or more cooling passages are provided within the body and are configured to receive cooling air and direct the cooling air onto the spring, armature, flapper assembly of the torque motor.

公开(公告)号：US10823301B2

公开(公告)日：2020-11-03

申请号：US16286834

申请日：2019-02-27

Applicant: Hamilton Sundstrand Corporation

Inventor： Maciej Zak

IPC: F16K21/00 ,  H02K26/00 ,  F15B13/043

Abstract: A valve body for a servovalve is provided comprising: a first surface adapted to extend parallel and adjacent to a substantially flat pole piece surface of a pole piece in use; and attachment features provided on the first surface for attaching the valve body to the pole piece in use, wherein the first surface is contoured such that, in use, an area of the first surface surrounding the attachment features is in contact with the substantially flat pole piece surface and an area of the first surface removed from the attachment features is not in contact with the substantially flat pole piece surface.

公开(公告)号：US10794499B2

公开(公告)日：2020-10-06

申请号：US16434209

申请日：2019-06-07

Applicant: Hamilton Sundstrand Corporation

Inventor： Marek Jedliński ,  Maciej Zak

IPC: F16K11/07 ,  F16K31/06 ,  F15B13/04 ,  F15B13/043

Abstract: A nozzle housing for a servo valve includes a circumferential wall defining a return passage extending along a longitudinal axis (A) for holding a return nozzle, the return passage having an opening for fluid communication with a spool valve and a return port for fluid communication with atmosphere, a first plate extending across the return passage, the first plate engaged with the circumferential wall and disposed between the opening and the return port, and a second plate extending across the return passage. The second plate engages with the circumferential wall and disposed between the first plate and the return port, the first plate has at least one first aperture, and the second plate has at least one second aperture that is misaligned with the at least one first aperture such that there is no linear axial flow path between the return port and the opening.