Total release dispensing valve

US6926172B2 · kind B2 · utility

Assignee

• S. C. JOHNSON & SON, INC. · US

Inventors

• Thomas Jaworski · Racine, US
• Nathan R. Westphal · Union Grove, US
• Donald J. Shanklin · Fullerton, US
• David J. Houser · Racine, US
• Tor Petterson · Lomita, US

Key dates

• Filing date: Sep 6, 2002
• Grant date: Aug 9, 2005
• Expiry date: Oct 30, 2022

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65D83/265
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A valve assembly can automatically and essentially totally release aerosol content from an aerosol container in a single burst without the use of electric power or constant manual activation. A diaphragm at least partially defines an accumulation chamber that receives aerosol chemical from the can during an accumulation phase. Once the internal pressure of the accumulation chamber reaches a predetermined threshold, the diaphragm moves, carrying with it a seal so as to unseal an outlet channel, and thereby initiate a spray of the main active chemical. The diaphragm is held in the open position while there is elevated pressure of active in the can and/or due to a latch that activates as the diaphragm moves to the dispensing position.