Cam liner profile
AssigneeHamilton Sundstrand Corporation
InventorsSara Dexter, Weishun Ni
Life of this patent
Estimating the term…
Abstract
A vane pump is provided and includes a liner having an inlet window and a discharge window, the liner being formed to define a cam surface and a rotor carrying a plurality of radially extending vanes which are forced outwardly such that vane tips thereof contact with the cam surface, the rotor having a direction of rotation such that one end of the inlet window is an upstream end and an opposed end is a downstream end, a radius of each of the vane tips being approximately 0.114 inches (0.3 cm) and a profile of the cam surface being defined in accordance with the radius of the vane tips.
Claims20
A vane pump comprising:
- a liner having an inlet window and a discharge window, the liner being formed to define a cam surface;
- and
- a rotor carrying a plurality of radially extending vanes which are forced outwardly such that vane tips thereof contact the cam surface, the rotor having a direction of rotation such that one end of the inlet window is an upstream end and an opposed end is a downstream end,
- a radius of each of the vane tips being approximately 0.114 inches (0.3 cm) and a profile of the cam surface being defined in accordance with the radius of the vane tips.
A vane pump comprising:
- a liner having an inlet window and a discharge window, the liner being formed to define a cam surface;
- and
- a rotor carrying a plurality of radially extending vanes which are forced outwardly such that vane tips thereof contact the cam surface, the rotor having a direction of rotation such that one end of the inlet window is an upstream end and an opposed end is a downstream end,
- a radius of each of the vane tips being approximately 0.150 inches (0.4 cm) and a profile of the cam surface being defined in accordance with the radius of the vane tips.
A vane pump comprising:
- a liner having an interior facing cam surface and being formed to define an inlet window and a discharge window;
- and
- a rotor disposed within the liner and carrying a plurality of radially extending vanes which are forced outwardly such that vane tips thereof contact the cam surface during rotor rotation, the rotor having a direction of rotation such that respective one ends of the inlet and outlet windows are upstream ends and that respective opposed ends are downstream ends,
- a profile of the cam surface being defined in accordance with the radius of the vane tips such that the profile diverges from a profile of a tracing defined by each of the vane tips as the rotor rotates.
Dependencies are inferred from the claim text.