Pressurized dispenser with dip tube extending through sac-in-can
US4265373A · kind A · utility
35Cited by
8References
4Claims
0Family size
Inventor
Key dates
| Filing date | May 23, 1979 |
| Grant date | May 5, 1981 |
| Priority date | — |
| Expiry date | May 23, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D83/62
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An aerosol type dispenser, wherein a dispensable fluid product is in storage, under pressure, intermediate wall surfaces of the dispenser and exterior surfaces of a pliable, impervious, expandable sac. Propellant gas, contained in isolation within the confinements of the sac, influence expansible surfaces of the sac to exert an expulsion force to the product. A dispensing valve mechanism, of choice, is utilized for the appropriate dispensing application. Propellant vapors may be co-dispensed with the product to provide an atomized spray or the vapors can be used to remove product residue from the valve mechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.