Unattended aerosol dispenser
US4077542A · kind A · utility
Inventor
Key dates
| Filing date | Nov 13, 1975 |
| Grant date | Mar 7, 1978 |
| Priority date | — |
| Expiry date | Nov 13, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D83/754
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An aerosol dispenser having a labyrinth or tortuous passage flow control body to cause gradual reduction in pressure and effect separation of the product and propellent issuing from an aerosol container into gaseous and liquid components, the components between discharge cycles collecting in an accumulator region containing a snap action diaphram, which in response to a selected pressure, snaps open to discharge a small quantity of product and propellent in predetermined sequence to produce a crisp discharge of the product without initial or residual dribble or trickle. The dispenser may be formed integrally with the container and thus expendable, or the pressure reducing and flow control means may be integral with the container and expendable therewith, the remaining portion of the dispenser being removable for reuse, or the entire dispenser may be arranged for removable attachment to a conventional container. Also, the dispenser may include a manual override. Still further, the dispenser may be arranged to discharge a single phase aerosol in which the propellent is distributed throughout the product, or arranged to discharge a dual phase aerosol, in which the product and propelle…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.