US 11,890,612 B2
Automated pipetting equipment, multi-channel pipetting assembly, and pipetting structure
Chi-Neng Weng, New Taipei (TW); Chih-Kuan Lin, New Taipei (TW); Shao-Wei Peng, New Taipei (TW); and Chih-Ying Chu, New Taipei (TW)
Assigned to WISTRON CORPORATION, New Taipei (TW)
Filed by Wistron Corporation, New Taipei (TW)
Filed on Apr. 29, 2021, as Appl. No. 17/302,271.
Claims priority of application No. 110104579 (TW), filed on Feb. 5, 2021.
Prior Publication US 2022/0250051 A1, Aug. 11, 2022
Int. Cl. B01L 3/02 (2006.01); G01N 35/10 (2006.01)
CPC B01L 3/0217 (2013.01) [G01N 35/1065 (2013.01); B01L 2200/025 (2013.01); B01L 2200/14 (2013.01); B01L 2400/0478 (2013.01)] 17 Claims
OG exemplary drawing
 
1. Automated pipetting equipment, adapted for pipetting between a plurality of workbenches, wherein the automated pipetting equipment comprises:
a movable mechanism adapted to move between any two of the plurality of workbenches;
a multi-channel pipetting assembly disposed on the movable mechanism and comprising:
a bracket disposed on the movable mechanism;
a linkage member; and
a plurality of pipetting structures disposed on the bracket and the linkage member in parallel, wherein each of the pipetting structures comprises:
a pipette body disposed on the bracket and including an air displacement tube and an air outlet end, wherein the air displacement tube is engaged with the air outlet end, the air displacement tube has a plurality of air chambers with different inner diameters, the plurality of air chambers are arranged axially according to the inner diameters and communicate with each other, the air outlet end is configured to be removably sleeved and coupled with a tip, the air outlet end has an air outlet passage, and the air outlet passage penetrates the air outlet end in the axial direction and communicates with the air chamber;
a piston rod fixed to the linkage member, being axially and reciprocatingly movable in the pipette body, the outer diameter of the piston rod being substantially equal to the inner diameter of the air chamber of the plurality of air chambers that has a smallest inner diameter;
at least one piston tube located in the pipette body, sleeved on the piston rod, the outer diameter of the at least one piston tube being substantially equal to the inner diameter of the remaining air chambers of the plurality of air chambers, and each being axially and reciprocatingly movable in the air displacement tube of the pipette body to enter or leave the matching air chamber; and
at least one elastic element corresponding to the at least one piston tube and telescopically sleeved on the piston rod; and
a driving module disposed on the movable mechanism and adapted to drive the linkage member to axially reciprocate.