Pressurization method for aerosol dispenser
US4383399A · kind A · utility
Inventor
Key dates
| Filing date | Apr 16, 1981 |
| Grant date | May 17, 1983 |
| Priority date | — |
| Expiry date | Apr 16, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B31/003
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The method of filling and pressurizing an aerosol type container having a fill-opening which comprises introducing a dispensable fluid product into the container for storage therein, projecting an expansible sac having an open end into the container through its fill-opening, overlapping the open end of the sac upon the fill-opening, introducing a pressurized fluid into the sac for storage therein, successively disposing a valve mechanism into the container to overlie the sac open end and closing the sac and fill-opening for sealing the dispensable fluid within the container and for sealing the pressurized fluid within the sac and closing the container; and extending a communicating means from the valve mechanism through the sac establishing communication between the valve mechanism and the fluid product for isolated passage of the fluid product therethrough.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.