Squeeze film damping type bearing
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United States of America Patent
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Feb 24, 2004
Grant Date -
Jun 20, 2002
app pub date -
Jun 29, 2001
filing date -
Jun 30, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to a bearing for maintaining an inner mobile structural component with revolution symmetry, rotating inside an outer structural component, which is itself fixed or mobile, said bearing comprising a set of balls and at least one joining member which provides the mechanical contact between said balls and said outer structural component, said bearing also comprising a pressurized-oil damper known as a 'squeeze film' damper, arranged at the annular contact surface between said joining member and the outer structural component, said bearing comprising at least two annular elastic seals, each arranged in a groove, at the edges of said annular contact surface, wherein the annular elastic seals are U-shaped lip seals, the hollow space of which is directed towards the 'squeeze film', or are E-type seals, the hollow spaces of which are directed towards the 'squeeze film', the leakproofing for each seal being ensured by the contact between said seal and the two parallel side surfaces of said groove, referred to as sealing side contact surfaces, so that the seal exerts axial pressure forces on said parallel side surfaces during the rotation of the bearing.
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