Aerosol dispenser assembly and method of reducing the particle size of a dispensed product
US6824079B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 24, 2003 |
| Grant date | Nov 30, 2004 |
| Priority date | — |
| Expiry date | Jan 24, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D83/141
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An aerosol dispenser assembly (1) having a container (2) that contains a liquid product, and a propellant for propelling the liquid product from the container (2). The propellant is a dual phase hydrocarbon propellant, is free of normal butane, and is at most 25% by weight of the contents of the container. A valve (4) is attached to the container (2) for selectively dispensing the liquid product from the container (2) as a mist, the mist having an average particle size of less than 35 &mgr;m (0.0014″), over at least 75% of the life of the dispenser assembly (1). The dispenser assembly (1) is capable of dispensing over 98% by weight of the liquid product from the container (2). A vapor tap (24) is formed in the valve (4) to facilitate thorough mixing of the propellant and the liquid product prior to dispensing, and a valve stem (12) is disposed in the valve (4). The valve stem (12) defines at least one stem orifice (26) for flow of the product during dispensing. The vapor tap (24) has a diameter of about 0.013″ (0.330 mm) to about 0.019″ (0.483 mm). A dispenser cap (16) is mounted on the valve stem (12) for actuating the valve (4) to dispense the liquid product. Th…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.