Dispenser pump

Details Dispenser pump Dispenser pump

1986-11-12

1988-04-26

Rolla, Joseph J.

Dispensing

Drip, leakage or waste catching or disposal

Return to main supply

417439, 417460, 222318, 222383, 222481, B67D 500

Patent

active

047399040

ABSTRACT:
A dispenser pump has pump chamber (34) whose volume is variable to draw up or discharge material, by the axial movement of a cup (25) on a stationary hollow stem (12). The seal (16) between them slides on an inner wall of the cup. A collector (30) at the lower end of the cup causes any material leaked past the seal to be guided inwardly to apertures (33) where it may drop to a body part (9) and pass via apertures (11') to a container (1) of the material.

REFERENCES:
patent: 1929564 (1933-10-01), Rolph
patent: 2906300 (1959-09-01), Becher
patent: 3337096 (1967-08-01), Brown
patent: 4640443 (1987-02-01), Corsette

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