Dispensing cartridge with vented piston
US7909211B2 · kind B2 · utility
4Cited by
18References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 19, 2009 |
| Grant date | Mar 22, 2011 |
| Priority date | — |
| Expiry date | Nov 19, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/0318
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A dispensing cartridge with a vented piston is disclosed. The piston includes a piston shell and a bleed plug. The arrangement of the piston shell and the bleed plug allows air to be vented through the piston until all of the air is vented out of the dispensing cartridge. With the air vented out of the dispensing cartridge, the piston self-into actuates into a closed sealed position in which the bleed plug forms a seal with the piston shell to prevent further fluid from flowing between the two elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.