(57) A binary vane pump is provided. The binary vane pump includes a pressure plate (50)
having a first discharge port (52), a thrust plate (60) having a second discharge
port (66), a ring (30) positioned axially between the pressure plate (50) and thrust
plate (60), the ring (30) having an inner cam surface (34), and a rotor (40) rotatably
disposed within the ring (30), the rotor (40) having a plurality of slots (44) and
a plurality of vanes (46), the vanes (46) of the plurality of vanes corresponding
to respective slots (44) of the plurality of slots (44) and are radially movable with
the respective slots (44). A first and second pump chamber (37,38) are disposed within
the ring (30), separated by the rotor (40), vanes (46), pressure plate (50) and thrust
plate (60), the first pump chamber (37) configured to discharge fluid to the first
discharge port (52) and the second pump chamber (38) configured to discharge fluid
to the second discharge port (66). A shaft (42) extends through the pressure plate
(50), thrust plate (60), ring (30) and rotor (40) and drives the rotor (40).
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