Aerosol dispensing valve
US6612464B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2001 |
| Grant date | Sep 2, 2003 |
| Priority date | — |
| Expiry date | Nov 13, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D83/265
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A valve assembly can automatically dispense aerosol content from an aerosol container at predetermined intervals without the use of electric power. A diaphragm at least partially defines an accumulation chamber that receives aerosol content from the can during an accumulation phase. Once the internal pressure of the accumulation chamber reaches a predetermined threshold, the diaphragm moves axially, carrying with it a leg so as to unseal an outlet, and thereby initiate a spray burst. A pawl extends from the diaphragm, and engages a retention surface to resist movement of the diaphragm and prolong the accumulation phase. The diaphragm assumes its original position when the pressure within the accumulation chamber falls below a threshold pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.