Airspace type spray dispenser

Details Airspace type spray dispenser Airspace type spray dispenser

1977-03-28

1978-05-02

Knowles, Allen N.

Dispensing

Resilient wall

Fluid pressure generating pump or pulsator and/or removable...

222211, 222212, 239327, B67D 3700

Patent

active

040870235

ABSTRACT:
A device for dispensing liquids in spray form has an outer resiliently deformable housing surrounding a more readily deformable inner container of liquid, with an airspace in between. Manual pressure on the housing generates pressure in the airspace, which compresses the container and causes it to discharge some of its contents. Part of the pressurized air is conducted to an orifice adjacent to the point of discharge of the liquid to assist in atomizing the discharge. Vent holes in the housing for return air into the airspace must be covered for generating the pressure, and these are spaced to minimize the danger of operation by children. The discharge nozzle assembly is constructed for simplicity of plastic molding, and for replaceable nozzle components to adapt the device for a variety of liquids. The assembly also provides for a substantial fill opening for the inner container, and adequate sealing after filling.

REFERENCES:
patent: 2758879 (1956-08-01), Anderson
patent: 2777612 (1957-01-01), Bensen
patent: 3217931 (1965-11-01), Farrar et al.
patent: 4020978 (1977-05-01), Szczepanski

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