Pipette
AssigneeBridgestone Corporation
InventorHirohito Nishimura
Life of this patent
Estimating the term…
Abstract
A pipette has a tip having at the front end thereof an inlet/outlet hole through which a liquid is sucked up and delivered. The pipette is fitted at an opening formed therein with an air passage through which air is sucked out from inside the pipette tip or supplied into the pipette tip. The pipette includes an inflatable member secured to the pipette body and which can be inflated with a fluid charged therein. The pipette body has formed therein separately from the air passage a fluid passage through which a fluid is charged and discharged. The inflatable member when charged with the fluid through the fluid passage in the pipette body and thus inflated closely adheres to the inner wall or outer surface of the top end portion of the pipette tip where the opening is formed, to thereby securely catch the pipette tip.
Claims6
A pipette in which a tip having formed at the front end thereof an inlet/outlet hole through which a liquid is sucked up and delivered, is fitted at an opening formed at the top end thereof on a body having formed therein an air passage through which air is sucked out from inside the pipette tip or supplied into the pipette tip, the pipette including:
- the pipette body having formed therein separately an air passage and a fluid passage though which a fluid is charged and discharged;
- a pipette tip having a top end portion with an opening therein;
- an inflatable member secured to the pipette body which can be inflated with the fluid charged and discharged thereto;
- and
- the inflatable member being able to be charged with the fluid through the fluid passage and thus inflated for close adherence to an outer surface of the top end portion of the pipette tip where the opening is formed, to thereby securely adhere to the pipette tip, wherein:
- the outer surface portion of the pipette body is extended downward to provide a cylindrical portion;
- an air duct, through which the air passage is formed, is extended downward to form an insert portion which is to be inserted in the cylindrical portion;
- the inflatable member having formed in one end portion thereof an insertion hole through which the insert portion is inserted and being open at the other end, is secured at the other end portion thereof to the lower end portion of the cylindrical portion of the pipette body or folded back and secured at the other end portion to the outer surface of the cylindrical portion;
- and
- the inflatable member is inwardly inflated with a fluid charged between the cylindrical portion and inflatable member to adhere to the outer surface of the pipette tip.
Dependencies are inferred from the claim text.