Seal for sealing shafts
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United States of America Patent
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Sep 20, 2016
Grant Date -
Nov 21, 2013
app pub date -
Feb 29, 2012
filing date -
Apr 11, 2011
priority date (Note) -
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Abstract
A seal for sealing around a shaft includes a radially outer clamp-in element to be clamped into a housing, an intermediate membrane part extending radially inwardly (toward the shaft) at an angle from the clamp-in element, and an angled base part at a radially inner end of the intermediate membrane part. A spring is received in a receiving groove that forms a spring pocket in the base part, and the spring exerts a contact pressure of a seal lip of the base part against the shaft. In a pressureless state without a pressure differential across the seal, the spring pocket has a width larger than the sectional diameter of the spring and thus forms a free play space for the spring in the pocket.
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