Dual chamber pump dispenser
US6230935A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 1996 |
| Grant date | May 15, 2001 |
| Priority date | — |
| Expiry date | Jul 22, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B11/0038
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The dual chamber dispenser consists of two tubular chambers each of which is connected to a pump. The pumps are self-priming and are of a type that draw the substances from the tubular chambers. There is an activator which also serves as the top of the dispenser, side view apertures, a foot for better stability and a spout that is angled for enhanced dispensing. The side view apertures allow for viewing the fill level of the tubular chambers. The pumps are of a type having an upper valve and a lower valve, with the upper valves a part of the piston's that move in and out of the pumping chambers. The valves in said pumps are positive closing by means of a biasing spring. The substances to be dispensed are maintained separate, one from the other, until the substances are dispensed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.