Dispensing – With discharge assistant – Container with follower
Patent
1984-03-29
1986-12-30
Rolla, Joseph J.
Dispensing
With discharge assistant
Container with follower
2221462, 277166, 220226, B67D 542
Patent
active
046322817
ABSTRACT:
A positive displacement pump type fluid dispensing system for viscous fluids in upright-open ended cylindrical containers. The system comprises a base adapted to receive and substantially center the container, a ram plate which is carried by a vertical elevator system to be thrust into the container to apply pressure to the fluid therein and a system of one or more air-operated positive displacement pumps which act through the ram plate to move fluid from the container. The ram plate is loosely mounted on the depending support structure so as to be displaceable relative to the support structure and the base and the container to accommodate axial misalignments. An edge seal having a cam surface on the edge of the ram plate assists in the alignment function and also provides a fluid pressure seal. Gravity operated valves are mounted on the ram plate to admit air to the container when the ram plate is withdrawn. An upper support assembly comprises a network of hollow beams which are integrated into the air inlet and exhaust system for the air motors to smooth out air pressure variations and to quiet the exhaust.
REFERENCES:
patent: 2660491 (1953-11-01), Sundholm
patent: 2925941 (1960-02-01), Bloxom
patent: 3750697 (1973-08-01), Kump
patent: 3758003 (1973-09-01), Kuatz et al.
patent: 3976229 (1976-08-01), Jackson
patent: 3982669 (1976-09-01), Moore
patent: 4147274 (1979-04-01), Hall
patent: 4153186 (1979-05-01), Nye
patent: 4209105 (1980-06-01), Dominique
patent: 4426094 (1984-01-01), Antonini
Johnstone Pump Company
Noland Kenneth
Rolla Joseph J.
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