Pressure seal for a vacuum pump
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United States of America Patent
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-
Jun 3, 2003
Grant Date -
Oct 24, 2002
app pub date -
Apr 18, 2002
filing date -
Aug 21, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention concerns a vacuum pump consisting in the assembly of two stator half-shells (101, 102) and two directly mounted end parts (31, 32) with an interposed single-piece continuous pressure seal (33). The pressure seal (33) comprises two annular end parts (34, 35) generally parallel to each other and connected by two side-members (36, 37) which are generally perpendicular thereto. Thus, the number of components to be assembled to produce an multistage dry vacuum pump is reduced, while providing satisfactory impermeability to outside atmosphere.
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