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US 4,054,061 AGranted
Graduated pipette equipped with a lateral suctions squirt
OwnerAlfredo Valtinventor
Life of this patent
Estimating the term…
Abstract
Graduated pipette formed by a stem having an inner diameter of suitable size, while said stem is closed at the top and its lower end presents a beveled edge. The stem is equipped at a suitable height, with a lateral branch formed by a capillary tube with a rubber cap or bulb fixed thereto having a suitable configuration and size such as to delimit a bigger volume than the volume of the stem. The cap presents an inner volume sufficient to move an air mass which, with drawn liquid is enough to fill all of the stem portion below the branch.
Claims1
A graduated pipette including an elongated tubular member closed at one end and open at the other,
- a laterally and downwardly extending capillary tube integrally connected with the tubular member adjacent its closed end but spaced therefrom and in communication with the interior thereof,
- and a bulb mounted on said capillary tube with its interior in communication with the passageway of the capillary tube, wherein the interior volume of the bulb is greater than that of tubular member in the bulb.
Dependencies are inferred from the claim text.