Multiple pump unit
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United States of America Patent
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Mar 15, 2011
Grant Date -
Jan 24, 2008
app pub date -
Jul 23, 2007
filing date -
Jul 24, 2006
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
There is provided a multiple pump unit including a pump shaft, a first pump, a pump housing, a second pump and a fluid passage block connected to one end surface in an axis line direction of the pump housing. One or both contacting surfaces of the pump housing and the fluid passage block is formed with a concave portion for accommodating the second pump. The pump housing is provided with a suction fluid passage guiding hydraulic fluid to a suction opening of the first pump and a first pump discharge fluid passage having a distal end that forms a first pump discharge port. The fluid passage block is provided with a second pump discharge port having the second pump as a hydraulic source.
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