PUMP DEVICE
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United States of America Patent
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N/A
Issued Date -
Mar 26, 2015
app pub date -
Mar 7, 2013
filing date -
Mar 30, 2012
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A pump device (1) according to an embodiment of the present invention includes a drive motor (M), a first pump unit for evacuation (11) including a first pump chamber and a first piston (21v), and a second pump unit for pressurization (12) including a second pump chamber and a second piston (21c). The second piston (21c) has a phase advanced with a rotational phase difference (φ) of more than 0° and less than 80° with respect to the first piston (21v).
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