Measured quantity dispenser
US4763817A · kind A · utility
Inventor
Key dates
| Filing date | Jan 2, 1987 |
| Grant date | Aug 16, 1988 |
| Priority date | — |
| Expiry date | Jan 2, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F11/263
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus is disclosed for dispensing a fixed quantity of material, having a flexible container for holding the material and an assembly rotatably disposed within the container for measuring and dispensing the material when the container is squeezed. The assembly includes a measuring cup extending adjacent to the bottom of the container and having an opening for entry of the material, an air chamber disposed adjacent to the mouth of the container and formed with a nozzle for discharge of the material, and a tube connecting the cup and chamber. Openings are spaced around the periphery of the air chamber, and the container neck adjacent to the chamber is provided with a plurality of protrusions which can, by rotation of the assembly relative to the container, be selectively positioned adjacent to the openings in the air chamber to block the openings and prevent air flow therethrough. The dispenser is inverted and squeezed to dispense the quantity of material in the measuring cup and, after the container is uprighted, the openings are unblocked to refill the measuring cup. The assembly is removable to permit refilling of the container.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.