Vacuum pumps

Details Vacuum pumps Vacuum pumps

1988-07-15

1990-04-24

Smith, Leonard E.

Pumps

Motor driven

Pump and motor interconnected by endless flexible...

474 86, 123198C, F04B 900

Patent

active

049195980

ABSTRACT:
In an oil free mechanical pump of the type in which two shafts support at least one pair of intermeshing rotors for rotation in opposite angular directions, a flexible drive means in the form of the belt or chain is provided for engaging pulleys or sprockets on the shafts.

REFERENCES:
patent: 2069327 (1937-02-01), Ray et al.
patent: 4504201 (1985-03-01), Wycliffe
patent: 4511378 (1985-04-01), Greene

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