Multiple port dual diameter pumps
US7207780B2 · kind B2 · utility
13Cited by
6References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 14, 2004 |
| Grant date | Apr 24, 2007 |
| Priority date | — |
| Expiry date | Jun 12, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2035/1034
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A multiple port, dual diameter piston fluid dispensing pump which includes multiple input and output ports accessed by rotating at least one of the pistons and a dual or multiple diameter piston or set of pistons that cooperate so that they follow each other. The dispensing piston is of smaller diameter than the pushing piston. This diameter difference permits a longer, controllable stroke to dispense micro-liters of fluid accurately.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.