Vacuum pump system including serially connected rotary and recip

Details Vacuum pump system including serially connected rotary and recip Vacuum pump system including serially connected rotary and recip

1985-04-17

1987-05-05

Croyle, Carlton R.

Pumps

Diverse pumps

Series

417244, F04B 2310

Patent

active

046628266

ABSTRACT:
A vacuum pump includes a rotary vacuum pump including a pair of rotors cooperating to suck gas, a driving source connected to a shaft of one of the pair of rotors, timing gears connected to respective shafts of the rotors and transmitting the driving force of the driving source between the shafts of the pair rotors, and a reciprocating vacuum pump connected to the driving source and connected to the downstream side of the rotary vacuum pump for sucking gas therefrom.

REFERENCES:
patent: 1770297 (1930-07-01), Bussmann
patent: 1936935 (1933-11-01), Fitch et al.
patent: 2407923 (1946-09-01), Gall
patent: 4504201 (1985-03-01), Wycliffe
patent: 4529363 (1985-07-01), Suzuki

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