Dispenser for viscous liquids
US4813870A · kind A · utility
53Cited by
10References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 9, 1987 |
| Grant date | Mar 21, 1989 |
| Priority date | — |
| Expiry date | Mar 9, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F11/088
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A dispenser for liquids including a cartridge containing a liquid, a nozzle, and a hollow flexible bladder between the cartridge and the nozzle. An assembly can be manually rotated to provide a high mechanical advantage and incrementally drive a piston through the cartridge to thereby fill the bladder with liquid from the cartridge and discharge any plug of solidified material (e.g., diluted phosphoric acid) that may be present in the nozzle; and manually operated button can be pressed to quickly and controllably collapse the bladder to thereafter dispel liquid within the bladder through the nozzle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.