Pipette

Measuring and testing – Sampler – sample handling – etc. – Capture device

Patent

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Details

7386401, 7386413, B01L 302

Patent

active

060216808

ABSTRACT:
A cylinder 3 in a casing 2 is provided with a first suction chamber 34 and a nozzle part 33 having a suction passage 3d in communication with the first suction chamber 34. In the casing 2. a first piston 4 which is slidably inserted into the first suction chamber 34 and includes a second suction chamber 43 is provided with pushed in a direction of protruding from the first suction chamber 34. Further, in the casing 2, a second piston 5 slidably inserted into the second suction chamber 43 is provided with pushed with less resiliency than with respect to the first piston 4 in a direction of protruding from the second suction chamber 43. At the top part of the casing 2, an operating lever 6 is provided for operating the first and second pistons 4 and 5 to switch between a small suction position that the second piston 5 is embedded in the first piston 4 and a large suction position that the first and second pistons 4 and 5 are embedded in the cylinder 3 and the first piston 4, respectively.

REFERENCES:
patent: 4036064 (1977-07-01), Hydo
patent: 5413006 (1995-05-01), D'Autry
patent: 5435197 (1995-07-01), Telimaa et al.

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