Pipette device

Details Pipette device Pipette device

1992-12-16

1996-04-30

Noland, Tom

Measuring and testing

Sampler, sample handling, etc.

Capture device

7386416, G01N 114, B01L 302

Patent

active

055114334

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.

REFERENCES:
patent: 3506164 (1970-04-01), Weichelbaum
patent: 3646817 (1972-03-01), Hinchman et al.
patent: 3732735 (1973-05-01), Cohen
patent: 3853012 (1974-02-01), Scordato et al.
patent: 3901413 (1975-08-01), Harris, Sr.
patent: 3918308 (1975-11-01), Reed
patent: 4037464 (1977-07-01), Wenander
patent: 4041764 (1977-08-01), Sabloewski et al.
patent: 4133211 (1979-01-01), Sarstedt
patent: 4141250 (1979-02-01), D'Autry
patent: 4399712 (1983-08-01), Oshikubo et al.
patent: 4616514 (1986-11-01), Magnussen, Jr. et al.
patent: 4625572 (1986-12-01), Yamashita
patent: 5012682 (1991-05-01), Sabloewski et al.

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