Suction volume system with improved control and volume adjustment

A technology of suction volume and capacity, applied in the field of exhaust suction volume, can solve the problems such as the complexity of the engine and its electronic control system, and achieve the effects of simplifying the electronic control system, improving the smoothness of suction volume, and high suction volume accuracy

Inactive Publication Date: 2017-04-12
GILSON SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially for the low stroke associated with the sampling of small liquid volumes, which can lead to pipetting smoothness problems
[0005] On electrically operated pipettes and automatics, the variable amplitude displacement of the control element depending on the volume to be sampled complicates the engine and its electronic control system

Method used

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  • Suction volume system with improved control and volume adjustment
  • Suction volume system with improved control and volume adjustment
  • Suction volume system with improved control and volume adjustment

Examples

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Embodiment Construction

[0038] combine first figure 1 , figure 1 A manually operated exhaust gas sampling pipette 1 of a preferred embodiment of the invention is shown. Throughout the following description, the terms "top" and "bottom" are considered with a pipette held vertically at or near the pipetting position.

[0039] exist figure 1 In , the pipette 1 is shown held by the hand 2 of an operator who (via his / her thumb 4) drives the pipette to dispense liquid that has previously been drawn.

[0040] More precisely, the pipette 1 comprises a handle 6 forming the upper body of the pipette, on the top end of which a rod-shaped suction control element 10 is supported, in the suction position the upper part of the rod-shaped suction control element 10 controls the The knob 12 is intended to withstand the pressure of the operator's thumb. By way of indication, it is noted that a display screen (not shown) may be provided on the handle 6 . Likewise, means for adjusting the volume to be sampled can a...

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PUM

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Abstract

A device for controlling pipetting and adjusting a volume to be sampled, including a pipetting control member; rotary actuating means coupled to the control member; a linking member slidably mounted on the actuating means, the linking member being connected to a piston; volume adjusting means; rotary means defining, for the linking member, a spiral-shaped guiding path, the rotary means being coupled to the adjusting means so that their actuation causes a rotation of the means about a second axis which the guiding path is centered, this rotation leading to a displacement of the linking member along the path, and to a sliding of the member relative to the actuating means.

Description

technical field [0001] The invention relates to the field of exhaust suction volume, in particular to a device for controlling the suction volume and adjusting the volume to be sampled. Background technique [0002] The invention is applicable to different types of sampling systems, in particular manually or electrically operated pipettes as well as automatic devices. Pipettes (also known as sampling pipettes, laboratory pipettes or even liquid transfer pipettes) have dedicated applications. These pipettes are designed to transfer and dispense liquids into containers. [0003] Manually operated pipettes are intended to be held by the operator during liquid sampling and dispensing operations performed by applying axial pressure on the same knob to move the control knob. Axial pressure applied to the control knob is transmitted to the piston of the pipette, which undergoes axial displacement and causes venting resulting in sampling and dispensing operations. For electricall...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01L3/02G01N35/10
CPCB01L3/0224B01L3/0227B01L2200/0605B01L2400/0478
Inventor 布鲁诺·杜德克
Owner GILSON SAS
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