Water pump and manufacturing method thereof
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 3, 2000
Grant Date -
N/A
app pub date -
Jul 27, 1998
filing date -
Aug 25, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A water pump is capable of avoiding adverse influence of water leakage from a swirl chamber to a bearing. The water pump includes a pump housing, a rotary shaft supported by a bearing mounted on a boss portion of the pump housing, an impeller fixed on an end portion of the rotary shaft extending into a swirl chamber defined within the pump housing, and a mechanical seal disposed between the impeller and the bearing. The water pump further includes a seal ring disposed within a space defined between the mechanical seal and the bearing for dividing the space into a first and second vapor chambers with drain holes provided for respective first and second vapor chambers.
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