Non-metallic precision fluid transfer devices
US5454491A · kind A · utility
6Cited by
7References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 30, 1993 |
| Grant date | Oct 3, 1995 |
| Priority date | — |
| Expiry date | Aug 30, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01L3/022
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for delivering precisely measured, minute quantities of liquid has no metal parts which contact the liquid. The device employs a barrel defining member with a bore which receives a polymer coated glass or ceramic fiber which functions as a piston. Fluid is drawn into and discharged from the bore via a needle in the form of a polymer coated glass or ceramic capillary tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.