Nutating pump, control system and method of control thereof
US6749402B2 · kind B2 · utility
15Cited by
3References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2002 |
| Grant date | Jun 15, 2004 |
| Priority date | — |
| Expiry date | Jul 30, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F11/22
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A fluid dispense system having a computer control system that operatively controls a stepper motor driving a pump. The stepper motor actuates the pump piston through partial revolutions. The computer control system determines the number of stepper motor steps required to pump a desired amount of fluid by the pump by rotating the piston through segments which are less than a full revolution. Further, the controller varies the speed of the stepper motor to avoid splashing of the dispense fluid and motor stalling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.