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公开(公告)号：US20240191752A1
公开(公告)日：2024-06-13
申请号：US18077837
申请日：2022-12-08
Applicant: Hamilton Sundstrand Corporation
Inventor： Mark W. Shoemaker , Ryan Shook
CPC classification number: F16C33/121 , F04C2/18 , F04C2240/54 , F04C2240/56 , F16C2360/00
Abstract: A journal bearing for a gear driven pump includes a bearing body having a bearing body circular opening that defines a bearing surface along a length of the bearing body and a face plate adjacent to the bearing surface. The bearing surface is configured to carry a gear shaft load through a hydrodynamic fluid film pressure between a load surface of a gear shaft and the bearing surface. The bearing surface is formed from a leaded bronze material and the face plate is formed from a copper-nickel alloy.
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2.发明授权公开(公告)号：US12078157B2
公开(公告)日：2024-09-03
申请号：US17562214
申请日：2021-12-27
Applicant: Hamilton Sundstrand Corporation
Inventor： Weishun Willaim Ni , Edward W. Goy , Benjamin T. Harder , Mark W. Shoemaker
CPC classification number: F04B1/328 , F02C9/30 , F04B49/06 , F04B13/00 , F04B2201/12051 , F04B2205/02 , F04B2205/05
Abstract: A variable displacement piston pump, having: a housing, a pivot assembly to pivot between minimal and maximum pivot angles; a pump cover defining an actuator bore with an actuator piston, an actuator arm extending from the actuator piston to the pivot assembly; and an electronic control unit (ECU) coupled to the pump, the ECU having: a pump controller, a linear variable differential transducer (LVDT) coupled to the pump controller and the actuator piston, and an electrohydraulic solenoid valve (EHSV) coupled to the pump controller, the ECU is configured to: determine a pivot differential for the pivot assembly between a target pivot angle and a current pivot angle; determine a position differential for the actuator piston, corresponding to the pivot differential of the pivot assembly; control the EHSV to move the actuator piston by the position differential; and determine, from the LVDT, that the actuator piston moved by the position differential.
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公开(公告)号：US11898559B2
公开(公告)日：2024-02-13
申请号：US17507498
申请日：2021-10-21
Applicant: Hamilton Sundstrand Corporation
Inventor： Mark W. Shoemaker , Zachary Allen Ray Le Duc
CPC classification number: F04C2/084 , F04C15/0026 , F04C15/0096 , F04C2240/50 , F04C2240/60
Abstract: A gear pump includes gears received within a housing defining an inlet, an outlet and end plates. The gears have shaft portions on each of two sides of each of the two gears. The shaft portions are mounted in journal bearings. The journal bearings each have a gear side face adjacent one of the two gears. A remote face is on a remote side of the journal bearing remote from each of the two gears. There is a plurality of heat pipes in at least one of the journal bearings. The heat pipes move heat from the gear face of the at least one of the journal bearings to the remote face. The plurality of heat pipes is enclosed by the housing, and extend generally in an axial direction from an end adjacent the gear face to an end adjacent the remote face. A fuel supply system is also disclosed.
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公开(公告)号：US20230417236A1
公开(公告)日：2023-12-28
申请号：US17849877
申请日：2022-06-27
Applicant: Hamilton Sundstrand Corporation
Inventor： Edward W. Goy , John M. Kassel , Mark W. Shoemaker
CPC classification number: F04B49/065 , F04B17/03 , F04B2203/0201 , F04B2203/0202 , F04B2203/0208 , F04B2205/05 , F04B2205/09 , F04B2207/70
Abstract: A flow system includes a pump, a motor connected to the pump that drives the pump and draws electrical energy and a sensor that measures the electrical energy drawn by the motor. The system also includes a control module for the flow system. The control module configured to perform a control module method that includes: receiving electrical data from the sensor; receiving operating characteristic data of the pump from one or more pump sensors; comparing the changes in the electrical data over time to the operating characteristic data; and determining a health of the pump on the comparison of changes in the electrical data over time to operating characteristic data.
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公开(公告)号：US20250075794A1
公开(公告)日：2025-03-06
申请号：US18238774
申请日：2023-08-28
Applicant: Hamilton Sundstrand Corporation
Inventor： Jecee Jarman , Zachary Allen Ray Le Duc , Mark W. Shoemaker
Abstract: A pump assembly includes a cylinder block defining a piston bore therein extending in an axial direction. A sleeve lines the piston bore. A piston is included in the piston bore, configured to reciprocate along a stroke in the axial direction within the sleeve. A piston ring is engaged circumferentially about the piston. The piston ring is fixed to the piston and is slidingly engaged to an inner surface of the sleeve.
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Patent Agency Ranking
6.发明公开公开(公告)号：US20230204029A1
公开(公告)日：2023-06-29
申请号：US17562214
申请日：2021-12-27
Applicant: Hamilton Sundstrand Corporation
Inventor： Weishun Willaim Ni , Edward W. Goy , Benjamin T. Harder , Mark W. Shoemaker
CPC classification number: F02C9/30 , F04B49/065 , F04B49/12
Abstract: A variable displacement piston pump, having: a housing, a pivot assembly to pivot between minimal and maximum pivot angles; a pump cover defining an actuator bore with an actuator piston, an actuator arm extending from the actuator piston to the pivot assembly; and an electronic control unit (ECU) coupled to the pump, the ECU having: a pump controller, a linear variable differential transducer (LVDT) coupled to the pump controller and the actuator piston, and an electrohydraulic solenoid valve (EHSV) coupled to the pump controller, the ECU is configured to: determine a pivot differential for the pivot assembly between a target pivot angle and a current pivot angle; determine a position differential for the actuator piston, corresponding to the pivot differential of the pivot assembly; control the EHSV to move the actuator piston by the position differential; and determine, from the LVDT, that the actuator piston moved by the position differential.
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公开(公告)号：US20230127244A1
公开(公告)日：2023-04-27
申请号：US17507498
申请日：2021-10-21
Applicant: Hamilton Sundstrand Corporation
Inventor： Mark W. Shoemaker , Zachary Allen Ray Le Duc
Abstract: A gear pump includes gears received within a housing defining an inlet, an outlet and end plates. The gears have shaft portions on each of two sides of each of the two gears. The shaft portions are mounted in journal bearings. The journal bearings each have a gear side face adjacent one of the two gears. A remote face is on a remote side of the journal bearing remote from each of the two gears. There is a plurality of heat pipes in at least one of the journal bearings. The heat pipes move heat from the gear face of the at least one of the journal bearings to the remote face. The plurality of heat pipes is enclosed by the housing, and extend generally in an axial direction from an end adjacent the gear face to an end adjacent the remote face. A fuel supply system is also disclosed.
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公开(公告)号：US12247617B2
公开(公告)日：2025-03-11
申请号：US18077837
申请日：2022-12-08
Applicant: Hamilton Sundstrand Corporation
Inventor： Mark W. Shoemaker , Ryan Shook
Abstract: A journal bearing for a gear driven pump includes a bearing body having a bearing body circular opening that defines a bearing surface along a length of the bearing body and a face plate adjacent to the bearing surface. The bearing surface is configured to carry a gear shaft load through a hydrodynamic fluid film pressure between a load surface of a gear shaft and the bearing surface. The bearing surface is formed from a leaded bronze material and the face plate is formed from a copper-nickel alloy.
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公开(公告)号：US20240350722A1
公开(公告)日：2024-10-24
申请号：US18137591
申请日：2023-04-21
Applicant: Hamilton Sundstrand Corporation
Inventor： Ryan Prescott Susca , Mark W. Shoemaker
CPC classification number: A61M5/142 , A61M5/172 , A61M5/16804
Abstract: A system includes a variable displacement pump (VDP) in fluid communication with an inlet line and with an outlet line. The VDP includes a variable displacement mechanism configured to vary pressure to the outlet line. An electromechanical actuator (EMA) is operatively connected to actuate the variable displacement mechanism for direct electromechanical control of the VDP.
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公开(公告)号：US20240183345A1
公开(公告)日：2024-06-06
申请号：US18075199
申请日：2022-12-05
Applicant: Hamilton Sundstrand Corporation
Inventor： Edward W. Goy , Zachary Allen Ray Le Duc , Mark W. Shoemaker , Mason Rosenberg
CPC classification number: F04B9/02 , F04B19/22 , F04B53/14 , F04B53/144
Abstract: A variable displacement pump system can include a piston sleeve having at least a first inner diameter portion and a second in inner diameter portion and an actuator piston configured to be disposed within the piston sleeve. The actuator piston can have a first piston portion having a first outer diameter, and a second piston portion having a second outer diameter. The first outer diameter can be different than the second outer diameter. The first piston portion can be configured to seal to the first inner diameter portion of the piston sleeve. The second piston portion of the actuator piston can be configured to seal to the second inner diameter portion of the piston sleeve.
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