Apparatus for injecting fluids

Details Apparatus for injecting fluids Apparatus for injecting fluids

1990-07-10

1991-10-08

Smith, Leonard E.

Pumps

Expansible chamber type

Elongated flexible chamber wall progressively deformed

604153, 417479, F04B 4312

Patent

active

050550136

ABSTRACT:
The invention relates to an apparatus for injecting fluid in which as delivery conduit portion a simple hose segment having the same diameter throughout is used which is subjected to the action of a total of three pump rams, thereby forming delivery chambers (9-11) by compression of the hose segment, one of the pump rams (14) performing in the completely closed state the function of an outlet valve whilst having a delivery function until complete closure of the corresponding hose cross-section. As a result, in a very simple technical manner a considerable uniformization of the delivery flow is achieved.

REFERENCES:
patent: 4236880 (1980-12-01), Archibald
patent: 4382753 (1983-05-01), Archibald
patent: 4650469 (1987-03-01), Berg et al.
patent: 4657490 (1987-04-01), Abbott
patent: 4840542 (1989-06-01), Abbott
patent: 4909710 (1990-03-01), Kaplan et al.
patent: 4952124 (1990-08-01), Ogami

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