Shaft driven pump without seals

Details Shaft driven pump without seals Shaft driven pump without seals

1982-06-14

1985-07-02

Garrett, Robert E.

Rotary kinetic fluid motors or pumps

Bearing, seal, or liner between runner portion and static part

415143, 415149R, 415170R, 417368, F04B 1700

Patent

active

045265070

ABSTRACT:
A sealless fluid pump apparatus has a primary pump moving fluid from an inlet through an outlet of the apparatus and a secondary pump adjoining the primary pump. Shaft means driving the two pumps extends through a portion of the housing separating the two adjoining pumps as well as through another portion of the housing separating the two pumps from a motor or other means driving the shaft means. No seals are provided where the shaft means extends through the housing. Rather, the secondary pump operates to resist the flow of fluid between the shaft means and housing into the secondary pump.

REFERENCES:
patent: 2450137 (1948-09-01), Harlamoff
patent: 2687695 (1954-08-01), Blom et al.
patent: 2711332 (1955-06-01), Audemar
patent: 2768584 (1956-10-01), Nicol et al.
patent: 2769105 (1956-10-01), Altschwager et al.
patent: 3407994 (1968-10-01), McKinney
patent: 4065232 (1977-12-01), Stratienko
patent: 4088424 (1978-05-01), Hyatt et al.
patent: 4226575 (1980-10-01), Hyatt et al.
patent: 4295797 (1981-10-01), Ruhl et al.

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