Aerosol dispenser for fluid products comprising a piston pump as

Details Aerosol dispenser for fluid products comprising a piston pump as Aerosol dispenser for fluid products comprising a piston pump as

1973-11-16

1976-01-20

Reeves, Robert B.

Dispensing

Jarring and/or vibrating

Hand manipulable shaker type

239349, 239357, B67D 554

Patent

active

039332799

ABSTRACT:
An aerosol dispenser for fluid products is described which has a container for product to be dispensed, a separator piston pump for generating compressed air as a propellant, a spray nozzle for aspirating, and spraying product from the product container, flowpaths, for compressed air from the piston pump, and for product from the product container, to the spray nozzle, valves and associated with the flowpaths and opening the paths dependent on the piston approaching or reaching full compression stroke position in the cylinder of the aforesaid piston pump. An abutment in the piston pump acts, in the aforesaid compression stroke position, on the valve body of the compressed air flow-controlling valve. The product flow control valve has a flexible elastic diaphragm across the compressed air flowpath and separating the latter from the interior of the product container. A product outlet in the wall of the product container outside the flexible elastic diaphragm is part of the flowpath for product to the spray nozzle, and a movable valve member is mounted in the flexible elastic diaphragm, the flexible elastic diaphragm being biassed to hold the movable valve member to close sealingly the product outlet when the piston pump is in other than the full compression stroke position.

REFERENCES:
patent: 2918221 (1959-12-01), Viard
patent: 3343797 (1967-09-01), Bach
patent: 3369757 (1968-02-01), Boris
patent: 3730392 (1973-05-01), Marand
patent: 3764046 (1973-10-01), Riccio

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