INTERNAL GEAR PUMP
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
N/A
Issued Date -
Oct 4, 2012
app pub date -
Mar 28, 2012
filing date -
Apr 1, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An internal gear pump for delivering a fluid, in particular one of the gerotor pump type, having a driven gear wheel, a rotatable annular gear interacting with the gear wheel, and a substantially cylindrical housing, in which the gear wheel and the annular gear are arranged. The housing has a base portion, an annular portion and a cover portion, the base portion having a pressure port, which forms a delivery chamber of the pump or opens into the latter. A thrust ring is arranged between the gear wheel and the annular gear on the one hand and the cover portion of the housing on the other. At least one connecting passage on or in the housing of the pump extends from the delivery chamber of the pump up to a gap between the thrust ring and the cover portion of the housing, in order to carry fluid from the delivery chamber into the gap.
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