Precision metered solenoid valve dispenser
US5743960A · kind A · utility
113Cited by
9References
34Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 26, 1996 |
| Grant date | Apr 28, 1998 |
| Priority date | — |
| Expiry date | Jul 26, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2035/1041
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A reagent dispensing apparatus is provided including a positive displacement syringe pump in series with a solenoid valve dispenser. The pump is controlled by a stepper motor or the like to provide an incremental quantity or continuous flow of reagent to the solenoid valve dispenser. The solenoid valve is opened and closed in at a predetermined frequency and duty cycle to dispense droplets of reagent onto a target substrate at the metered flow rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.