Non-contacting mechanical face seal
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United States of America Patent
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Feb 25, 1997
Issued Date -
N/A
app pub date -
Aug 14, 1995
filing date -
Aug 3, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Improved spiral grooves in a mechanical face seal have plural terminal corners which more evenly distribute the fluid pressure generated within the seal gap into discrete pressure zones which are radially displaced and may also be circumferentially displaced from the other pressure zones generated by the same groove. Alternative embodiments include grooves having surfaces of varying depths wherein each of the plural terminal groove corners is associated with a section of the groove having a surface at a particular depth.
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