High precision liquid dispenser
US9738507B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 18, 2016 |
| Grant date | Aug 22, 2017 |
| Priority date | — |
| Expiry date | Mar 27, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01G13/24
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
In one embodiment, a liquid dispenser includes a liquid reservoir, a measurement device providing at least one signal indicative of the amount of liquid remaining in the liquid reservoir, an electrically actuated valve coupled to a tube outlet exiting from a bottom of the liquid reservoir, and a processor. The processor is electrically connected to the measurement device and operatively coupled to and controlling operation of the valve. Further, the processor is configured to determine a valve open time for dispensing a requested amount of liquid. The valve open time depends upon a preliminary time based on the requested amount and at least one signal from the measurement device, and an adjustment to the preliminary time based on a difference between a requested amount and a measured amount determined by the measurement device for at least one previous dispense.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.