Sealing apparatus having a plurality of sealing elements arranged around a center opening into a ring configuration
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United States of America Patent
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Jun 13, 2017
Grant Date -
Nov 14, 2013
app pub date -
May 10, 2013
filing date -
May 14, 2012
priority date (Note) -
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Abstract
The invention relates to an apparatus. In order to achieve efficient sealing, the apparatus includes a sealing with a plurality of sealing elements arranged generally in a ring configuration around a center opening. Each sealing element includes a sealing surface facing the center opening. At least one chamber is included for receiving sections of the sealing elements. An inlet to a fluid source provides the at least one chamber with fluid in order to generate an overpressure acting on the sections of the sealing elements received in the at least one chamber, and for pressing and moving the sealing surfaces of the sealing elements towards the center opening.
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