High vacuum pump

Details High vacuum pump High vacuum pump

1976-04-15

1978-06-06

Freeh, William L.

Rotary kinetic fluid motors or pumps

With means for re-entry of working fluid to blade set

Cross flow runner

55320, 55400, 55467, 415112, 417424, F04D 500

Patent

active

040933970

ABSTRACT:
A high vacuum pump having a centrifugally filtered intake with a particular utility as an aspirator in a dentist's office, for example, having a coaxial intake/output at the pump's rotor hub with a radial outlet therefrom, a liquid pressure seal on the top and bottom of the pump impeller assembly and an automatically flushed sump tank surrounding the intake filter.

REFERENCES:
patent: 1525332 (1925-02-01), Sommer
patent: 2102353 (1937-12-01), Brock
patent: 2114780 (1938-04-01), Juelson
patent: 2423634 (1947-07-01), Berliner
patent: 2839006 (1958-06-01), Mayo
patent: 3078579 (1963-02-01), Jones et al.
patent: 3561195 (1971-02-01), Bouru
patent: 3749464 (1973-07-01), Satterthwaite
patent: 3802807 (1974-04-01), Kilayko
patent: 3931016 (1976-01-01), Lovelady

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