HYDRODYNAMIC SEAL WITH IMPROVED EXCLUSION AND LUBRICATION
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United States of America Patent
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Issued Date -
Oct 14, 2010
app pub date -
Apr 7, 2010
filing date -
Apr 8, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A hydrodynamic sealing assembly including a first machine component defining a seal groove and a second machine component having a rotatable surface that is rotatable relative to the first machine component. A hydrodynamic seal including a seal body of generally ring-shaped configuration having a circumference and the seal body includes a sealing lip having a sealing surface contacting the relatively rotatable surface to establish a sealing interface between the sealing lip and the relatively rotatable surface. The sealing lip includes an exclusion edge of abrupt substantially circular form that is substantially aligned with a direction of relative rotation between the sealing lip and the relatively rotatable surface in a compressed, installed condition of the seal and wherein the exclusion edge is non-circular and slightly wavy in an uncompressed, uninstalled condition of the hydrodynamic seal.
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