Dispensing valve
US7195139B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2004 |
| Grant date | Mar 27, 2007 |
| Priority date | — |
| Expiry date | Sep 11, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D83/7535
- 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 gas propellant from a portion of 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 burst of the main active chemical. 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.