Vacuum pump rotor for a vacuum pump having a roots pumping mechanism

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United States of America Patent

PATENT NO 9920761
SERIAL NO

14968849

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Abstract

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The present invention relates to a rotor for a vacuum pump 150 having a roots pumping mechanism, the rotor comprising at least two hollow lobes 160, 162, 164, 166, each lobe having an outer wall 208 which defines a lobe profile, a hollow cavity 210 generally inward of the outer wall, and at least one strengthening rib 226 located in the cavity to resist stress on the lobes generated during rotation.

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Patent Owner(s)

  • EDWARDS LIMITED

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dowdeswell, Stephen Cuckfield, GB 13 34
Schofield, Nigel Paul Horsham, GB 69 196

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