Pump dispenser for viscous fluids
US4809878A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 24, 1988 |
| Grant date | Mar 7, 1989 |
| Priority date | — |
| Expiry date | Jun 24, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B11/028
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A viscous product dispenser is described which comprises a tubular container body adapted to hold product, a take-up piston at the lower end of the body which decreases the internal volume of the container as product is dispensed from the container, and a bulk liquid pump dispenser at the upper portion of the container body having a dip tube extending into the container body and a finger depressible, spring-biased piston/cylinder pumping mechanism. The pumping mechanism of the bulk liquid pump dispenser has a product outlet conduit which is parallel and coaxial to the outlet axis of the dip tube and the center of the piston. The piston/cylinder pumping mechanism is of substantially less cross-sectional area than the internal diameter of the container body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.