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:
Jun. 30, 1992
Filed:
Jul. 11, 1990
Applicant:
Inventors:
Stephen T Dunne, Ipswich, GB;
Terence E Weston, Woodbridge, GB;
Assignee:
DMW (Technology) Limited, Woodbridge, GB;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
222394 ; 22240218 ; 22240222 ; 22240224 ;
Abstract
A process and a discharge valve assembly are provided for regulating the flow of a liquid product from an aerosol container which is pressurized with a permanent gas propellant. The liquid product is conveyed under pressure to a mixing region and the propellant gas is separately conveyed to the mixing region. The mixture is passed through at least one choke restrictor that is located between the mixing region and the discharge nozzle. The mixture expanding downstream of the restrictor forms a foam-like mixture internally of the valve assembly and prior to discharge of the mixture from the exit nozzle.