Metering dispenser having suck-back through nozzle

Details Metering dispenser having suck-back through nozzle Metering dispenser having suck-back through nozzle

1976-09-22

1978-08-08

Reeves, Robert B.

Dispensing

With discharge assistant

With material supply container and discharge assistant with...

222181, B67D 540

Patent

active

041051467

ABSTRACT:
A metering dispenser for supplying a metered quantity of a viscous liquid comprising a reservoir for a metered quantity of liquid and a piston for expelling the liquid therefrom, first and second sealing rings around the piston preventing inlet of liquid to the reservoir during expulsion of the liquid from the reservoir by the piston and causing suction of any liquid remaining at the outlet back into the reservoir during the return stroke of the piston.

REFERENCES:
patent: 3142415 (1964-07-01), Louchheim
patent: 3187954 (1965-06-01), Hammer et al.
patent: 3250438 (1966-05-01), Packwood, Jr.
patent: 3319835 (1967-05-01), Ensign et al.
patent: 3540630 (1970-11-01), Brown et al.

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