Liquid dispensing pump

Details Liquid dispensing pump Liquid dispensing pump

1981-12-18

1983-10-18

Rolla, Joseph J.

Dispensing

With discharge assistant

With movable nozzle interconnected therewith

222380, B65D 8854

Patent

active

044101074

ABSTRACT:
Discharge valving for a liquid dispensing pump having a reciprocable plunger is in the form of a laterally extending bunsen valve having an annular spring washer which resiliently bears against an annular valve seat adjacent the discharge opening. The loading of the valve is controlled by valve positioning lugs between the top of the plunger and an overlying plunger head. The plunger may be immobilized in a fully raised position above the pump body or in a fully depressed position relative to the pump body by locking fingers positively deflected into and out of the path of reciprocation of a stop shoulder on the plunger head.

REFERENCES:
patent: 2956509 (1960-10-01), Cooprider et al.
patent: 3282472 (1966-11-01), Roder
patent: 3507586 (1970-04-01), Gronemeyer et al.
patent: 3527551 (1970-09-01), Kutik et al.
patent: 3759426 (1973-09-01), Kane et al.
patent: 3797705 (1974-03-01), Cooprider
patent: 3827605 (1974-08-01), Knickerbocker
patent: 3827606 (1974-08-01), Knickerbocker
patent: 4046495 (1977-09-01), Grimm
patent: 4050613 (1977-09-01), Corsette
patent: 4057176 (1977-11-01), Horvath
patent: 4079865 (1978-03-01), Kutik
patent: 4218198 (1980-08-01), Kutik et al.
patent: 4305702 (1981-12-01), Hartley

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