Refillable pump dispenser and refill cartridge
US5875936A · kind A · utility
81Cited by
20References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1996 |
| Grant date | Mar 2, 1999 |
| Priority date | — |
| Expiry date | Dec 18, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B11/0054
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A refillable dispenser and refill cartridge is described for dispensing a product through a pumping mechanism that draws product from the cartridge. Product is pumped upwards from the refill cartridge through a connector tube, across a one-way check valve into a collecting chamber from which it is dispensed through a one-way monitoring valve and exits a nozzle. Flow is initiated by compression of a domed elastomeric wall covering the collecting chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.