Value controlled squeezable fluid dispenser
US5033647A · kind A · utility
149Cited by
13References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 9, 1990 |
| Grant date | Jul 23, 1991 |
| Priority date | — |
| Expiry date | Mar 9, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2205/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A squeezable dispenser having main flexible outer container closed off by a top and an inner collapsible flexible fluid containing bladder. A one-way flow valve is provided between the outer container and the inner bladder to prevent the contents of the bladder from contamination from external sources. A vent in the top provides fluid communication between the interior of the container and the exterior thereof. A sealing member overlies the vent and normally closes off the same when the dispenser is squeezed to dispense liquid in the bladder out through the valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.