Self returning contamination barrier
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United States of America Patent
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Nov 14, 2017
Issued Date -
N/A
app pub date -
Oct 7, 2011
filing date -
Nov 1, 2006
priority date (Note) -
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Abstract
A barrier of a vacuum pump prevents contamination from entering a vacuum pump air line. The barrier separates parts of the pump and is moveable between an initial state and a distended state. The barrier is assembled within the pump with a pre-load. When the vacuum source is applied to the barrier, the barrier achieves a distended state and when the vacuum source is released, the barrier incrementally self returns to an initial state. The geometry and material construction of the barrier, along with the pre-load, assists in returning the barrier on its own to the initial state from the distended state.
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