Pipette tip ejector
US5614153A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 26, 1995 |
| Grant date | Mar 25, 1997 |
| Priority date | — |
| Expiry date | May 26, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/606
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A pipette tip ejector mechanism for a pipette comprising a releasable connector between a lower end of a pipette tip ejector shaft and an upper end of a pipette tip ejector arm. The connector comprises a female receptor extending from either the shaft or arm and a male connector extending from the other of the shaft or arm to axially fit into the female receptor for support thereby. A cantilever is secured at one end to either the shaft or arm to extend along an outer surface thereof. The cantilever carries one of a locking member or a locking shoulder to engage and lock to the other of the locking member or locking shoulder on the shaft or arm to axially lock the arm relative to the shaft as the male connector is inserted into the female receptor. The cantilever also carries a tab extending outward for finger engagement by a user to outwardly move the cantilever to disengage the locking member from the locking shoulder and to thereby release the arm for axially movement relative to the shaft to allow the arm to be separated from the shaft of the pipette for cleaning, service, replacement or operation of the pipette without the ejector arm which allows access to smaller vessels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.