AXIAL PISTON PUMP
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United States of America Patent
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app pub date -
May 15, 2014
filing date -
May 22, 2013
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Abstract
The invention relates to an axial piston swash plate pump, in particular for hydraulic systems, comprising a cylinder drum (1) which can be rotationally driven about an axis (15) in a pump housing (7), in which pistons (21) are arranged in an axially displaceable manner supporting, by means of the actuation end thereof (31) which is accessible from the outside of the cylinder drum (1), at least indirectly a swash plate (3), said swash plate being pivotable to the desired angles of inclination with respect to the axis (15) in order to adjust the stroke of the piston (21) and also the fluid system pressure generated thereby. Said swash plate (3) is mounted, for the pivotable movements thereof, on the pump housing (7) by means of a swash plate bearing (39, 41); characterized in that a supply device (5), which enables a fluid which is at a system pressure to travel at least to the swash plate bearing (39, 41), is provided.
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