Dispensing device for storing and applying at least one liquid o

Details Dispensing device for storing and applying at least one liquid o Dispensing device for storing and applying at least one liquid o

1986-08-01

1987-09-01

Rolla, Joseph J.

Dispensing

With cutter and/or punch

222137, 222162, 222327, 222389, B67D 542

Patent

active

046903062

ABSTRACT:
A dispensing device comprises a cartridge unit with at least two chambers containing liquid or pasty substances and pistons therein being connected with each other by at least one blade adapted for cutting through a dividing wall, between two chambers and separating their contents, only one piston assembly being required which can be operated with a propellant under excess pressure preferably not exceeding 6 bars. As no piston rod is required the construction of the device is very compact. In a first step for actuating the pistons, the cartridge unit is moved forward toward an exit end of the device bearing a discharge nozzle whereby valves in the device are opened and contents from the cartridge unit are conveyed to the discharge nozzle. After each discharge a restoring element returns the cartridge unit to a rearward end position whereby the valves are closed and no contents can leak from the cartridge.

REFERENCES:
patent: 975646 (1910-11-01), Sidney
patent: 3007611 (1961-04-01), Coolidge
patent: 3813012 (1974-05-01), Laird
patent: 3910466 (1975-02-01), Collar
patent: 4215802 (1980-08-01), Ornsteen
patent: 4366919 (1983-01-01), Anderson
patent: 4426022 (1984-01-01), Lang et al.
patent: 4471888 (1984-07-01), Herb et al.
patent: 4493436 (1985-01-01), Brokaw
patent: 4538920 (1985-09-01), Drake
patent: 4589572 (1986-05-01), Pomarolli

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