Dispenser for extrudable material including dispensing from collapsible containers
US5323931A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 1993 |
| Grant date | Jun 28, 1994 |
| Priority date | — |
| Expiry date | Feb 8, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05C17/0146
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A dispenser is provided for dispensing the extrudable contents of a collapsible container having a nozzle through which the container can be discharged by collapsing the container. The dispenser is of a piston/cylinder device, with the piston having a container-engaging face provided with a contoured structure of a predetermined configuration corresponding generally to a collapsing profile of the collapsible container. An elongated flexible valve device is slidably mounted relative to the housing and includes a coupling end coupled directly to a trigger member of the dispenser and a valve end for opening and closing an opening in the housing which defines the cylinder of the device. The flexible valve device is a band member of plastic material and is operatively associated with a mechanism for holding the valve open when a cover of the housing is removed and for automatically closing the valve when the cover is replaced. A pistol grip handle and the trigger of the dispenser are ergodynamically configured for ease of operation. A set of interchangeable stop cams are provided for positioning between the trigger and the pistol grip handle for selectively determining a metered amount …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.