Aerosol spray can with pressure reducing valve

US6802461B2 · kind B2 · utility

Assignee

• THOMAS GMBH · DE

Inventor

• Heinz Schneider · Düren, DE

Key dates

• Filing date: Apr 16, 2003
• Grant date: Oct 12, 2004
• Expiry date: Apr 16, 2023

Classification

• Technology area (CPC G): Physics
• CPC primary: G05D16/103
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

For a pressure reduction, an aerosol spray can filled with a compressed pressure gas requires, upstream of its spray valve (14), a pressure regulation valve (10) with a closing point (28). In known embodiment types a flow occurs around the outside of the pressure reduction valve, which requires a complicated housing structure. It is therefore proposed that the connection between the closing point (28) and the spray valve (14) take place via a central bore (58) in the piston (22) of the pressure reduction valve (10), preferably without a flow through the pressure chamber (26), but instead past the latter. The simple construction is advantageous, with which it is also possible to provide easy access to the piston (22) from the outside in order to maintain it in its opened position for easier filling under pressure.