Disposable pipette tip
US4748859A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 6, 1987 |
| Grant date | Jun 7, 1988 |
| Priority date | — |
| Expiry date | Mar 6, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01L3/0279
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A disposable pipette tip member having three inner coaxial annular sealing bands spaced axially from an open proximal end for receiving a conical pipette tip mounting shaft. The first two sealing bands and adjacent valley regions of the tip member are relatively resilient and are shaped such that the two sealing bands simultaneously engage, guide and laterally support the pipette shaft as it enters the tip member to form annular fluid-tight seals with the shaft. The third band is relatively rigid and upon engagement with the shaft, forms a third annular fluid-tight seal and a controllable stop for the shaft such that the tip member is seated on the shaft adjacent the pipette tip ejector mechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.