Molecular drag pump
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United States of America Patent
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Apr 20, 1999
Grant Date -
N/A
app pub date -
Jun 14, 1996
filing date -
Jun 16, 1995
priority date (Note) -
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Abstract
A molecular drag pump including a stator and a rotor supported in the stator using two ball bearings at least one of which presses against at least one bearing surface of the stator serving as an axial abutment for the rotor, wherein the contact between the ball bearing and the bearing surface operates in bending and not in shear.
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