Roller-type liquid pumping apparatus with improved installation capability
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United States of America Patent
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May 11, 2010
Grant Date -
Mar 30, 2006
app pub date -
Sep 23, 2005
filing date -
Sep 29, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A liquid pumping apparatus comprising a rotor housing, a rotor having at least one roller, to be rotated by a prime mover, an inner periphery wall of the rotor housing, a flexible tube to be inserted into a gap formed between the rotor and the inner periphery wall and squeezed when the rotor is rotated so as to transfer a liquid fed into the tube, and a deformable guide for guiding the flexible tube in a moving path of the roller. At least one portion of the inner periphery wall is movable so as to approach or separate from the rotor.
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