Liquid sample pipette with tip ejecting mechanism
AssigneeGilson, Inc.
InventorFrancois Viot
Life of this patent
Estimating the term…
Abstract
The sampling pipette comprises a body (2); an arm (20) movable relative to the body parallel to a longitudinal direction (10) of the pipette in order to eject a cone fixed to the body; and a button (14) for controlling movement of the arm. The pipette is arranged in such a manner that the button (14) applies sliding thrust on the arm (20) while the arm is moving relative to the body.
Claims18
1/ A sampling pipette comprising:
- a body (2);
- an arm (20) movable relative to the body parallel to a longitudinal direction (10) of the pipette in order to eject a cone fixed to the body;
- and
- a button (14) for controlling movement of the arm;
- the pipette being characterized in that it is arranged in such a manner that the button (14) applies sliding thrust on the arm (20) while the arm is moving relative to the body.
2/ A pipette according to claim 1, characterized in that the button (14) is mounted free to turn relative to the body (2) about an axis (36) perpendicular to the longitudinal direction (10).
3/ A pipette according to claim 1 or claim 2, characterized in that it includes an intermediate part (12) mounted free to turn relative to the body (2) about an axis (28) parallel to the longitudinal direction (10), the button (14) being mounted free to turn relative to the intermediate part (12) about an axis (36) perpendicular to the longitudinal direction (10).
4/ A pipette according to claim 3, characterized in that the button (14) is directly connected to the intermediate part (12).
5/ A pipette according to claim 3 or claim 4, characterized in that the intermediate part (12) is mounted free to turn relative to the arm (20) about the axis (28) parallel to the longitudinal direction (10).
6/ A pipette according to any one of claims 3 to 5, characterized in that the intermediate part (12) is connected directly to the body (2).
7/ A pipette according to any one of claims 1 to 6, characterized in that it includes a linking part (16) that is movable relative to the body (2) along an axis (28) parallel to the longitudinal direction (10), the button (14) being movable relative to said part via an opening (39) in said part.
8/ A pipette according to claim 7, characterized in that the linking part (16) is free to turn relative to the arm (20) about the axis (28) parallel to the longitudinal direction (10).
9/ A pipette according to any one of claims 3 to 6 and according to claim 7 or claim 8, characterized in that the linking part (16) is free to turn relative to the intermediate part (12) about the axis (28) parallel to the longitudinal direction (10).
10/ A pipette according to claim 9, characterized in that the linking part (16) is directly connected to the intermediate part (12).
11/ A pipette according to any one of claims 7 to 10, characterized in that the linking part (16) is directly connected to the arm (20).
12/ A pipette according to any one of claims 1 to 11, characterized in that the button (14) is movable relative to the body (2) in a plane perpendicular to the longitudinal direction (10), being free to occupy any position lying in a continuous range of positions in said plane, and enabling the arm (20) to be moved into any position.
13/ A pipette according to claim 12, characterized in that the button (14) is mounted free to turn relative to the body (2) in said plane.
14/ A pipette according to any claim 12 or claim 13, characterized in that the button (14) is arranged to apply sliding thrust on the arm (20) during movement of the button in said plane.
15/ A pipette according to any one of claims 12 to 14, characterized in that it includes means (48) for identifying at least one predetermined position of the button (14) relative to the body (2) within said range.
16/ A pipette according to any one of claims 1 to 15, characterized in that the pipette is a hand-held pipette.
17/ A pipette according to any one of claims 1 to 16, characterized in that the pipette has a single channel.
18/ A pipette according to any one of claims 1 to 17, characterized in that the pipette is elongate in shape along the longitudinal direction.