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:
Aug. 07, 1984
Filed:
Mar. 08, 1982
Roger A Butcher, Horndean, GB;
Andre Debard, Buc, FR;
Aerosol Inventions and Development S.A. AIDSA, Fribourg, CH;
Abstract
In a valve assembly for a pressurized dispenser, such as of the kind commonly known as aerosol cans, a novel arrangement is proposed for sealing the spray tip or button to the ferrule or center boss of the mounting cup of the valve during `gassing`. An inwardly directed annular shoulder formed in the top wall of the ferrule or center boss is engaged by an outwardly facing annular surface on the underside of the spray tip and the higher the pressure the better the seal. As the spray tip no longer needs to be as flexible as hitherto it can be made of polypropylene. A complementary outward-facing shoulder on the underside of the top wall helps to locate the rim of the valve shell and thereby to resist displacement of the gasket during gassing.