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公开(公告)号：US20220128051A1
公开(公告)日：2022-04-28
申请号：US17078241
申请日：2020-10-23
Applicant: Hamilton Sundstrand Corporation
Inventor： Edward W. Goy , Timothy J. Franckowiak
Abstract: A dual vane pump system includes first and second vane pumps having first and second rotors with a plurality of vanes moving radially inwardly and outwardly of the first and second rotors, and into contact with an inner surface of the first and second outer liners. A first pre-pressurization passage connects a first pump inlet in the first pump that is at discharge pressure to a second pump outlet in the second pump which is upstream of the second discharge opening. There is a coupling connecting the first and second rotors for rotation together. The pre-pressurization passage extending through the bearing.
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公开(公告)号：US11143183B2
公开(公告)日：2021-10-12
申请号：US16364525
申请日：2019-03-26
Applicant: Hamilton Sundstrand Corporation
Inventor： Timothy J. Franckowiak , Zachary Allen Ray Le Duc
IPC: F04C15/00 , F04C2/18 , F16C32/06 , F04B1/053 , F04C14/00 , F16C33/10 , F04C15/06 , F02C7/22 , F04C2/12 , F01C21/02
Abstract: A gear pump could be said to include a first gear and a second gear intermeshed with the first gear. An inlet side is configured to have an inlet connection connected thereto. A discharge side is configured to have a first discharge connection connected thereto. At least one shaft is in operable communication with each of the first and second gears. A bearing is configured to support at least one of the shafts via an inner bore and having an outer peripheral surface. A valve bore is formed into bearing between the inner bore and the outer peripheral surface. A second discharge connection is formed into the bearing. A tap provides fluidic communication between the valve bore and a pad defined in the inner bore. A valve is positioned in the valve bore. The valve includes a moving valve member. A spring biases the moving valve member in a direction toward the second discharge connection. A fuel pump system is also disclosed.
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Patent Agency Ranking
公开(公告)号：US11988209B2
公开(公告)日：2024-05-21
申请号：US17541667
申请日：2021-12-03
Applicant: Hamilton Sundstrand Corporation
Inventor： Edward W. Goy , Timothy J. Franckowiak
CPC classification number: F04C2/16 , F02C7/22 , F04C13/00 , F04C15/0026 , F04C15/0057 , F04C2240/50
Abstract: A gear pump includes a pair of gears having meshed teeth. One of the gears is configured for connection to a source of drive. The gears are received within a housing. The housing has an inlet port configured for connection to a source of fluid and an outlet port. Each of the gears have a shaft rotating within the housing on a bearing on each axial side of each gear. At least one of the bearings associated with each of the pair of gears has a plurality of springs received in recesses to bias the said at least one bearing against an end face of a respective one of the pair of gears. A retention plate holds each of the plurality springs. A method of assembly is also disclosed.
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公开(公告)号：US20200309123A1
公开(公告)日：2020-10-01
申请号：US16364525
申请日：2019-03-26
Applicant: Hamilton Sundstrand Corporation
Inventor： Timothy J. Franckowiak , Zachary Allen Ray Le Duc
Abstract: A gear pump could be said to include a first gear and a second gear intermeshed with the first gear. An inlet side is configured to have an inlet connection connected thereto. A discharge side is configured to have a first discharge connection connected thereto. At least one shaft is in operable communication with each of the first and second gears. A bearing is configured to support at least one of the shafts via an inner bore and having an outer peripheral surface. A valve bore is formed into bearing between the inner bore and the outer peripheral surface. A second discharge connection is formed into the bearing. A tap provides fluidic communication between the valve bore and a pad defined in the inner bore. A valve is positioned in the valve bore. The valve includes a moving valve member. A spring biases the moving valve member in a direction toward the second discharge connection. A fuel pump system is also disclosed.
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公开(公告)号：US20240301878A1
公开(公告)日：2024-09-12
申请号：US18669097
申请日：2024-05-20
Applicant: Hamilton Sundstrand Corporation
Inventor： Edward W. Goy , Timothy J. Franckowiak
CPC classification number: F04C2/16 , F02C7/22 , F04C13/00 , F04C15/0026 , F04C15/0057 , F04C2240/50
Abstract: A gear pump includes a pair of gears having meshed teeth. One of the gears is configured for connection to a source of drive. The gears are received within a housing. The housing has an inlet port configured for connection to a source of fluid and an outlet port. Each of the gears have a shaft rotating within the housing on a bearing on each axial side of each gear. At least one of the bearings associated with each of the pair of gears has a plurality of springs received in recesses to bias the said at least one bearing against an end face of a respective one of the pair of gears. A retention plate holds each of the plurality springs. A method of assembly is also disclosed.
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公开(公告)号：US20230175503A1
公开(公告)日：2023-06-08
申请号：US17541667
申请日：2021-12-03
Applicant: Hamilton Sundstrand Corporation
Inventor： Edward W. Goy , Timothy J. Franckowiak
CPC classification number: F04C2/16 , F04C13/00 , F02C7/22 , F04C15/0057 , F04C2240/50
Abstract: A gear pump includes a pair of gears having meshed teeth. One of the gears is configured for connection to a source of drive. The gears are received within a housing. The housing has an inlet port configured for connection to a source of fluid and an outlet port. Each of the gears have a shaft rotating within the housing on a bearing on each axial side of each gear. At least one of the bearings associated with each of the pair of gears has a plurality of springs received in recesses to bias the said at least one bearing against an end face of a respective one of the pair of gears. A retention plate holds each of the plurality springs. A method of assembly is also disclosed.
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公开(公告)号：US11519407B2
公开(公告)日：2022-12-06
申请号：US17078241
申请日：2020-10-23
Applicant: Hamilton Sundstrand Corporation
Inventor： Edward W. Goy , Timothy J. Franckowiak
IPC: F03C2/00 , F03C4/00 , F04C2/00 , F04C11/00 , F04C13/00 , F04C2/344 , F04C2/348 , F04C14/22 , F04C23/00
Abstract: A dual vane pump system includes first and second vane pumps having first and second rotors with a plurality of vanes moving radially inwardly and outwardly of the first and second rotors, and into contact with an inner surface of the first and second outer liners. A first pre-pressurization passage connects a first pump inlet in the first pump that is at discharge pressure to a second pump outlet in the second pump which is upstream of the second discharge opening. There is a coupling connecting the first and second rotors for rotation together. The pre-pressurization passage extending through the bearing.
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