Tandem piston pump
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United States of America Patent
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Apr 16, 2013
Grant Date -
Jun 3, 2010
app pub date -
Jul 31, 2007
filing date -
Jul 31, 2007
priority date (Note) -
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Abstract
In a tandem piston pump (1) from which pump discharge pressure from four systems is extracted, a tilt axis direction of a front swash plate (14) and a tilt axis direction of a rear swash plate (54) are different to each other, respective discharge ports (23, 24) of a rear pump (50) are opened at a phase difference relative to respective discharge ports (21, 22) of a front pump (10), and respective pump ports (41, 42) of the front pump (10) and respective pump ports (43, 44) of the rear pump (50) are opened in different side faces (71, 72) of a port block (70).
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