The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 20, 1983
Filed:
May. 26, 1981
William R Stoody, San Diego, CA (US);
Other;
Abstract
This disclosure relates to a manually operated, self-cleaning, aerosol valve that has separate control elements for propellant fluid and product fluid. The valve is adapted to maintain internal separation of the fluids. Even when the fluids are codispensed to produce a fine mist, separation of the propellant from the product is maintained until the fluids are beyond control elements. Control elements also maintain internal separation of the fluids when the valve is actuated for purging. This is achieved by keeping the fluid product control element closed while the propellant control element is open. With the control elements so positioned, cleaning fluid can be directed to purge all passageway surfaces that are exposed to external air. This type of valve is particularly suited for dispensing viscous products, such as water-borne paints.