Aerosol dispensing device

Details Aerosol dispensing device Aerosol dispensing device

1975-04-28

1976-12-07

Knowles, Allen N.

Dispensing

With discharge assistant

Fluid pressure

B65D 8314

Patent

active

039957780

ABSTRACT:
This invention relates to an aerosol dispensing device for dispensing a substance free from liquified propellant. The device comprises a main compartment provided with a dispensing valve which contains the substance together with pressurized propellant vapor for effecting dispensation, and a reservoir compartment containing liquified propellant and pressurized propellant vapor. A communicating valve is provided between the reservoir compartment and the main compartment. The valve is adapted to open and allow propellant vapor to pass from the reservoir compartment to the main compartment. In a preferred arrangement the valve opens when dispensation to the atmosphere of the substance in the main compartment causes the pressure of the propellant vapor in that compartment to fall below the pressure of the propellant vapor in the reservoir by a predetermined amount.

REFERENCES:
patent: 1607579 (1926-11-01), Thompson, Jr.
patent: 2772922 (1956-12-01), Boyd et al.
patent: 3258163 (1966-06-01), Brush
patent: 3815793 (1974-06-01), Morane et al.

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