Minnesota Mining and Manufacturing Company

Neotechnic Engineering Limited

Philip Bolton

Trevor J Wilde

Norman Burdekin

Metered-dose aerosol valves

A valve assembly for a pressurized aerosol-dispensing container, in which a hollow body secured inside the container cooperates with an elongate movable valve member operative from outside the container to dispense a predetermined amount only of the liquid contents of the container for each dispensing operation, avoids problems associated with the formation of gas bubbles by providing a second hollow body as a dip-cup concentrically around the first hollow body and dividing the space between the two hollow bodies into a plurality of capillary channels which retain liquid therein. The two hollow bodies are mutually supporting and the second, outer hollow body may be of plastic material or metal. If of plastic material, it can deform on fitting to grip the inner hollow body; if of metal it can be crimped or otherwise deformed into gripping contact with the inner hollow body.

Growing community of inventors

Blackburn, United Kingdom

Philip Bolton