Low leak O-ring seal
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United States of America Patent
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app pub date -
Feb 24, 2009
filing date -
Oct 8, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A vacuum seal having an O-ring between two mating parts. One of the mating parts has a groove configured to receive the O-ring. The groove has a modified dovetail shape with at least one side wall having a compound slope formed with a first portion forming an angle of less than 90 degrees with respect to a base wall and a second portion extending substantially perpendicular to the sealing face of the mating part. The cross-sectional area of the groove is less than 95% of the cross sectional area of the O-ring and the width of the groove mouth is at least 94% of the diameter of the O-ring.
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