公开(公告)号：US20220241793A1

公开(公告)日：2022-08-04

申请号：US17722801

申请日：2022-04-18

Applicant: Eppendorf AG

Inventor： Jens Wilmer

IPC: B01L9/00 ,  G01N35/10 ,  B01L3/02

Abstract: A metering head for a metering machine having a carrier having parallel attachments for picking up pipette tips wherein each attachment has a tube having a supporting protrusion at the bottom end at least one sleeve which surrounds the tube and can be axially shifted on the tube, and at least one elastomer O-ring which surrounds the tube a pressure plate above the sleeves having a plurality of first holes through which the tubes extend, wherein the pressure plate can be shifted along the tubes from a release position into a clamping position where the sleeves are pressed, at the bottom ends, against the adjacent O-rings, and the O-rings are expanded to clamp pipette tips; and a first shifting apparatus connected to the pressure plate moving the pressure plate between the release position and clamping position.

公开(公告)号：US20220097038A1

公开(公告)日：2022-03-31

申请号：US17413730

申请日：2019-12-12

Applicant: Eppendorf AG

Inventor： Jens Wilmer ,  Dominik Schneider

IPC: B01L3/02

Abstract: A pipetting head comprises a carrier, at least one attachment held on the carrier and configured to secure at least one pipette tip, and two O-rings retained on the at least one attachment and configured to contact the sealing seat of the at least one pipette tip. The inner diameter of the sealing seat of the at least one pipette tip is smaller than an outer diameter of a respective O-ring where the sealing seat contacts a respective O-ring. The respective O-ring is deformed while the pipette tip is slid onto the at least one attachment to securely clamp the at least one pipette tip. The sealing seat of the at least one pipette tip is dimensioned such that the at least one attachment exerts a force on the pipette tip to deform the at least one pipette tip when it is securely clamped on the at least one attachment.

公开(公告)号：US09295986B2

公开(公告)日：2016-03-29

申请号：US13873755

申请日：2013-04-30

Applicant: Eppendorf AG

Inventor： Jens Wilmer ,  Ingo Winter

IPC: B01L3/02

CPC classification number: B01L3/021 ,  B01L3/0224 ,  B01L2200/14 ,  B01L2300/026

Abstract: A pipette for use with pipette tips in which a set metering volume is secured in that the locking body is arranged on the circumference of the annular cylindrical locking element when it is in the locking position. Through this, the transmission part which the locking element comprises on the outer circumference is held fast. The annular cylindrical locking element can be formed separately from a toothed ring for driving a counter mechanism. Thus, it is possible to perform the locking in arbitrary positions or in more selectable rotational positions than in the conventional locking equipment, where a locking element engages into the toothed ring for driving the counter mechanism.

Abstract translation: 用于移液管尖端的移液管，其中设定的计量体积被固定，因为当处于锁定位置时，锁定体设置在环形圆柱形锁定元件的圆周上。 通过这一点，锁定元件在外圆周上包括的传动部分被保持得很快。 环形圆柱形锁定元件可以与用于驱动计数器机构的齿环分开地形成。 因此，可以在常规的锁定设备中的任意位置或更可选择的旋转位置执行锁定，其中锁定元件接合到齿形环中以驱动计数器机构。

公开(公告)号：US20140010732A1

公开(公告)日：2014-01-09

申请号：US13919405

申请日：2013-06-17

Applicant: Eppendorf AG

Inventor： Herbert Belgardt ,  Peter Molitor ,  Burkhardt Reichmuth ,  Jörg Sattler ,  Jens Wilmer

IPC: B01L3/02

CPC classification number: B01L3/0217 ,  B01L3/0234

Abstract: A pipette for actuating a syringe, with a bar-shaped housing, a first fixture with a first opening at the lower end of the housing for putting in a first fastening portion on the upper edge of a cylinder of the syringe, a fixture body with a second fixture and a second opening on the lower end of the housing, for putting in a second fastening portion on a piston of the syringe, an actuating element, a tooth bar connected to the fixture with a tooth in the housing, a pawl, pivotally mounted on the actuating element in the housing, an adjusting element for adjusting the step size of the steps, a covering, movably arranged on the tooth bar at the side of the pawl, and a coupling element arranged on the covering.

Abstract translation: 一种用于致动注射器的移液管，具有杆状壳体，在所述壳体的下端具有第一开口的第一固定件，用于将注射器的气缸的上边缘放置在第一紧固部分中， 第二固定装置和壳体下端上的第二开口，用于将注射器的活塞上的第二紧固部分放置在致动元件上，与该固定装置连接的齿条，齿轮在壳体中，棘爪， 枢转地安装在壳体中的致动元件上，用于调节台阶的步长的调节元件，可移动地布置在棘爪侧面的齿条上的覆盖物和布置在覆盖物上的联接元件。