Device for fixing a vacuum pump

The fastener system of the invention comprises a coaxial annular flange ( 14 ) having through holes ( 16 ) provided therein, each serving to pass a screw ( 17 ) for screwing into an associated tapped hole ( 16 ) in the wall ( 2 ) of a stationary structure. Each through hole ( 16 ) comprises a circul...

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Bibliographic Details
Main Authors BOUILLE ANDRE, SAVRY CHRISTIAN, DAUVILLIER OLIVIER, MATHES RAINER, DULAC ERIC
Format Patent
LanguageEnglish
Published 03.11.2005
Edition7
Subjects
BLASTING
HEATING
LIGHTING
MECHANICAL ENGINEERING
NON-POSITIVE DISPLACEMENT PUMPS
POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS
PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
WEAPONS
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Summary:The fastener system of the invention comprises a coaxial annular flange ( 14 ) having through holes ( 16 ) provided therein, each serving to pass a screw ( 17 ) for screwing into an associated tapped hole ( 16 ) in the wall ( 2 ) of a stationary structure. Each through hole ( 16 ) comprises a circularly cylindrical distal segment ( 16 a) followed by an enlarged proximal segment ( 16 b) adjacent to the wall ( 2 ) of the stationary structure, and allowing the shank ( 19 ) of the screw to bend and enabling a corresponding lateral offset (D). This prevents the screw ( 17 ) rupturing under high shear forces due to accidental destruction of a vacuum pump rotor while rotating at full speed.
Bibliography:Application Number: US20050525705