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:
Jul. 12, 2016
Filed:
May. 22, 2012
William Sydney Blake, Linwood, NJ (US);
William Sydney Blake, Linwood, NJ (US);
Other;
Abstract
A dual function aerosol valve assembly has a valve housing with first and second stem valves mounted for reciprocation within it. The first stem valve controls flow of gaseous propellant and the second stem valve is coaxially received within the first stem valve and controls flow of product. An actuator and nozzle assembly is connected with the stem valves so that the first stem valve is opened to admit propellant to the nozzle upon initial depression of the actuator, and the second stem valve is then opened to admit product to the nozzle. Closing of the stem valves is in reverse order so that flow of product to the nozzle is first interrupted and then flow of propellant is interrupted. A spring biases the stem valves to their closed positions. The valve housing is constructed to accommodate either a bag-on-valve system or a piston system.