Rotary pump
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United States of America Patent
Stats
-
Sep 16, 2003
Grant Date -
Apr 17, 2003
app pub date -
Jan 9, 2002
filing date -
Oct 12, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A rotary pump including: a casing having a circular inner circumferential surface, a rotor rotating about a center of the inner circumferential surface of the casing, a partition plate installed so as to be movable in and out of the casing so that a tip end of the partition plate comes into contact with an outer circumferential surface of the rotor, a spring which drives the partition plate so that the partition plate is in constant contact with the rotor, and an intake port and a discharge port formed in the casing so as to be positioned after and before the partition plate with respect to the direction of rotation of the rotor; and the partition plate is formed with a communicating portion that communicates between the intake port side and the discharge port side.
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