Pipetting devices
US4178803A · kind A · utility
Inventor
Key dates
| Filing date | May 11, 1978 |
| Grant date | Dec 18, 1979 |
| Priority date | — |
| Expiry date | May 11, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01L3/0224
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A precision liquid pipetting device having an elongated barrel, a pipette tube mounted to one end of the barrel and a plunger assembly carried in part within the barrel and including a plunger tip reciprocable within the pipette tube to draw liquid into and to dispense liquid from the pipette tube, the improvement comprising a finger button removably secured to the plunger assembly on one end and an adjustable stop mounted on said finger button for limiting movement of said plunger assembly and providing precise control of the amount of fluid dispensed from the pipette tube. In addition, a body extension assembly is provided to adapt the pipetting device for connection to a valve body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.