Metering dispensers
US4625897A · kind A · utility
33Cited by
8References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 21, 1984 |
| Grant date | Dec 2, 1986 |
| Priority date | — |
| Expiry date | Sep 21, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F11/286
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A metering dispenser assembly comprises a squeeze bottle 1 with a metering cup 3 fitting in the neck of the bottle and carrying a dip tube 9 which extends to the bottom of the bottle. The dip tube, or at least a pillar 7 into which it fits, terminates at a level between the top and bottom of the cup, and there is a vent hole at this level to provide communication between the container and atmosphere. The vent is small enough not to allow significant leakage from the cup during a dispensing operation. The vent could instead be alongside the dip tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.