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US 2022/0018340 A1Published application
Inline piston pump
AssigneeEaton Intelligent Power Limited
InventorsArindam Ghosh, Stephen Marshall Devan, Kelly Dale Valtr, Charles Andrew Shand, Sauradeep Datta
Life of this patent
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Abstract
An inline piston pump that is efficient, manufacturable, and durable. The angled bearing surface within the pump that it contacts drives the piston and rotates with the cylinder.
Claims20
An axial piston device comprising:
- a housing including a first end portion and a second end portion and including a low-pressure fluid inlet and a high-pressure fluid outlet at the first end portion of the housing;
- a cylinder block rotatably positioned within the housing including a first end portion and a second end portion, the first end portion of the cylinder block being in the first end portion of the housing and the second end portion of the cylinder block being in the second end portion of the housing, the cylinder block including a plurality of cylindrical bores that extend from the first end portion to the second end portion of the cylinder block;
- a drive shaft including a first end portion that extends inside of the housing and is configured to drive the rotation of the cylinder block within the housing, the drive shaft defining a cylinder block axis of rotation;
- a plurality of pistons, each piston including a first end portion and a second end portion, each piston being positioned within a cylindrical bore such that the piston can reciprocate within the cylindrical bore axially along a longitudinal axis of the piston, the first end portion of the pistons being positioned in the first end portion of the cylinder block, and the second end portion of the pistons extending out of the second end portion of the cylinder block;
- and
- an angled yoke assembly located in the second end portion of the housing, the yoke assembly being inclined relative to a plane that is perpendicular to the cylinder block axis of rotation, the yoke assembly including a bearing surface configured to contact the second end portions of the plurality of pistons, wherein the bearing surface of the yoke assembly is configured to rotate about a yoke assembly axis of rotation synchronously with the cylinder block.
3 more elements
An axial piston device comprising:
- a housing including a first end portion and a second end portion and including a low-pressure fluid inlet and a high-pressure fluid outlet at the first end portion of the housing;
- a cylinder block rotatably positioned within the housing including a first end portion and a second end portion, the first end portion of the cylinder block being in the first end portion of the housing and the second end portion of the cylinder block being in the second end portion of the housing, the cylinder block including a plurality of cylindrical bores that extend from the first end portion to the second end portion of the cylinder block;
- a drive shaft including a first end portion that extends inside of the housing and is configured to drive the rotation of the cylinder block within the housing, the drive shaft defining a cylinder block axis of rotation;
- a plurality of pistons, each piston including a first end portion and a second end portion, each piston being positioned within a cylindrical bore such that the piston can reciprocate within the cylindrical bore axially along the longitudinal axis of the piston, the first end portion of the pistons being positioned in the first end portion of the cylinder block, and the second end portion of the pistons extending out of the second end portion of the cylinder block;
- an angled plate located in the second end portion of the housing, the angled plate being inclined relative to a plane that is perpendicular to the cylinder block axis of rotation;
- a bearing assembly provided between the angled plate and the second end portion of the housing enabling the angled plate to rotate about an angled plate axis of rotation;
- a bearing plate secured to the angled plate, the bearing plate configured to contact with the second end portion of the plurality of pistons;
- a retainer configured to engage the second end portions of the pistons and limit the axial motion of the pistons;
- and
- wherein the angled plate, the bearing plate, and the retainer are configured to rotate synchronously with the cylinder block.
7 more elements
Dependencies are inferred from the claim text.