Power plants – Pressure fluid source and motor – Input pump and rotary output motor system having...
Reexamination Certificate
2007-11-27
2007-11-27
Lazo, Thomas E. (Department: 3745)
Power plants
Pressure fluid source and motor
Input pump and rotary output motor system having...
C417S442000
Reexamination Certificate
active
10782417
ABSTRACT:
A charge pump is provided with two independent outlets that can satisfy the pressure requirements of both a charge circuit and an auxiliary circuit. Preferably, the charge pump is a multiple roller vane pump that has at least one inlet and two outlets independent of each other. The first outlet is in fluid communication with a charge circuit, and the second outlet is in fluid communication with an auxiliary circuit. Because the two outlets are independent of each other, the roller vane pump is able to satisfy the pressure requirements of both the charge and auxiliary circuits. Preferably, the two outlets are diametrically opposed to each other, thereby reducing the load on the driveshaft. Additionally, the roller vane pump may include a second inlet independent of the first.
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Betz Michael A
Herrin Jeff L
Johnson Alan W
Lazo Thomas E.
Sauer-Danfoss Inc.
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