Vacuum pump with longitudinal and annular seals
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United States of America Patent
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Jan 24, 2017
Grant Date -
Jan 16, 2014
app pub date -
Jan 17, 2012
filing date -
Mar 22, 2011
priority date (Note) -
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Abstract
A multi-stage vacuum pump may include first and second half-shell components defining a plurality of pumping chambers and for assembly together along respective longitudinal extending faces; first and second end stator components for assembly at respective longitudinal seals for sealing between the first and second half-shell stator components when assembled together at the longitudinally extending faces; and annular seals for sealing between the first and second end stator components and the first and second half-shell stator components when assembled; wherein the longitudinal seals have end portions which abut against the annular seals for sealing therebetween and the first and second half-shell stator components have formations for resisting movement of the end portions away from the annular seals when the end portions are compressed between the first and second half-shell stator components.
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