Non-circular rolling diaphragm liquid expulsion apparatus

Details Non-circular rolling diaphragm liquid expulsion apparatus Non-circular rolling diaphragm liquid expulsion apparatus

1983-12-15

1985-09-03

Croyle, Carlton R.

Dispensing

With discharge assistant

Container with follower

60 3948, B67D 554

Patent

active

045387494

ABSTRACT:
A liquid expulsion apparatus 12 having a rolling diaphragm 20 conforming to the non-circular shape of the storage tank shelf 30, thereby increasing liquid storage capacity within the tank. A gas-driven piston 24, also conforming to the non-circular shape, expels the liquid in rapid fashion and provides the force for rolling the attached non-circular diaphragm 20. Stability in diaphragm 20 during actuation of piston 24 is maintained by varying the local thicknesses t of diaphragm 20 in relationship with the local, cross-sectional radii of curvature R.sub.c.

REFERENCES:
patent: 3668868 (1972-06-01), Drzycki
patent: 3722751 (1973-03-01), Bisciglia
patent: 3847307 (1974-11-01), Hoser
patent: 3847308 (1974-11-01), Tambor
patent: 3847309 (1974-11-01), Grossman
patent: 3940031 (1976-02-01), Fishman
patent: 3944117 (1976-03-01), Gould
patent: 4129025 (1978-12-01), Carey et al.
patent: 4216881 (1980-08-01), Rosman
patent: 4437590 (1984-03-01), LaBruna

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