Patent · US Expired

Pipette device

US5511433A · kind A · utility

10Cited by

14References

14Claims

0Family size

Assignee

Eppendorf-Netheler-Hinz GmbH · DE

Inventors

Horst Sabloewski · Hamburg, DE
Ingo Cordes · Hamburg, DE
Jochen Beese · Norderstedt, DE
Klaus Schurbrock

Key dates

Filing date	Dec 16, 1992
Grant date	Apr 30, 1996
Priority date	—
Expiry date	Dec 16, 2012

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01L3/0224
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A pipette device, comprising a housing, an actuating element projecting from the upper end of this housing, a cylinder, a hollow piston moveable in this cylinder for displacing an air volume, a rod connecting this piston to this actuating element which is depressed against spring force to displace this piston, and an adapter cone for receiving replaceable pipette tips communicating with this cylinder. According to the invention the hollow piston comprises an outer tubular shell and an inner support which is preferably made of plastic material and to which the actuating element is connected by a coupling. The invention particularly refers to providing a variety of shells made of different materials which can be easily replaced.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.