Sequential delivery valve apparatus and methods
US8800824B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Feb 29, 2012 |
| Grant date | Aug 12, 2014 |
| Priority date | — |
| Expiry date | Feb 29, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D83/28
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A sequential delivery valve provides sequential delivery of gas propellant and liquid product from a container to a dispensing head for ejecting an atomized spray from the dispensing head. When the dispensing head is depressed, a pusher in the valve passes from a closed position wherein no liquid and no gas is allowed to travel through the valve to a partially open position where only gas is allowed to travel through the valve and eventually to a fully open position wherein both gas and liquid are allowed to travel through the valve into the dispensing head. When the dispensing head is released, the pusher passes from the fully open position back to a partially open position allowing only gas to travel through the valve and eventually to the closed position wherein no gas and no liquid are allowed to travel through the valve into the dispensing head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.