Assembly for sealing the annulus between concentric cylindrical surfaces
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United States of America Patent
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Jan 23, 2001
Grant Date -
N/A
app pub date -
Feb 19, 1999
filing date -
Feb 19, 1999
priority date (Note) -
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Abstract
An assembly for sealing the annular space between the inner cylindrical surface of a tubular member and the outer surface of a cylindrical member having a separate upper and lower seal member each of which are sealably and translatably positioned on the cylindrical member outer cylindrical surface, each of the upper and lower seal members having a circumferentially outwardly displaceable sealing lip and including a tubular actuator positioned between the upper and lower seal members having end portions for radially outwardly displacing the upper and lower sealing lips and including a downwardly displaceable seal energizer for moving the upper seal member towards the lower seal member to cause the actuator to concomitantly, radially outwardly expand the circumferential sealing lips.
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