Rechargeable aerosol can and spray valve with integral mixing device for propellant and substance to be sprayed
US5730326A · kind A · utility
Inventor
Key dates
| Filing date | Jul 25, 1995 |
| Grant date | Mar 24, 1998 |
| Priority date | — |
| Expiry date | Jul 25, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D83/34
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An aerosol can comprising a rigid housing (11), a lid (12), a valve (13) arranged on the lid, and a flexible bag (14) connected to the valve and containing the substance to be dispensed. The valve comprises a discharge channel (19) through which the substance to be dispensed is fed, and a side air inlet (20). Said valve further comprises a mixing device (100) interconnecting the side pressurized air inlet and the discharge channel to form a uniform air/substance mixture. The valve can be placed in a series of positions, i.e. a closed position in which the channel and inlet are sealed, a flushing position in which only the inlet is open, and an operative position in which both the channel and the inlet are open. In the flushing position, air is expelled through the outlet to remove the substance remaining therein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.