Repeating pipetting device

Details Repeating pipetting device Repeating pipetting device

1982-02-19

1983-09-27

Turk, Arnold

Measuring and testing

Sampler, sample handling, etc.

Capture device

7386418, 222287, 222309, 222326, 222391, 422100, B01L 302

Patent

active

044061706

ABSTRACT:
A repeating pipetting device includes an elongated housing, a flange holder at one end of the housing for holding the flange of a syringe, a coupling assembly for connection to the plunger of the syringe, and a toothed rack connected to the coupling assembly and longitudinally reciprocable relative to the flange holder. A pawl is engageable with the teeth of the rack and is operable to advance the rack toward the flange holder in a succession of steps. An operating lever movable back and forth in the elongated direction of the housing, intermittently operates the pawl, and a return lever retracts the rack from the flange holder. A tongue-like cover or slide is provided within the device and covers the rack for a part of its length. The cover is slidably adjustable along the rack and has a portion engageable by the pawl which limits the extent to which the rack can be advanced by the pawl in each step.

REFERENCES:
patent: 2164711 (1939-07-01), Kadavy
patent: 2768768 (1956-10-01), Cornell et al.
patent: 2776075 (1957-01-01), Etter
patent: 3160156 (1964-12-01), Tyler
patent: 3178076 (1965-04-01), Kennedy
patent: 3954014 (1976-05-01), Andrews et al.
patent: 4022207 (1977-05-01), Citrin
patent: 4046290 (1977-09-01), Louder
patent: 4099548 (1978-07-01), Sturm et al.
patent: 4144761 (1979-03-01), Dzaack

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