The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 14, 2017
Filed:
Aug. 20, 2013
Thermo Fisher Scientific Oy, Vantaa, FI;
Ari Jaaskelainen, Helsinki, FI;
Mikael Lind, Helsinki, FI;
Juha Telimaa, Jarvenpaa, FI;
Aaro Tuominen, Espoo, FI;
THERMO FISHER SCIENTIFIC OY, Vantaa, FI;
Abstract
The invention relates to liquid dispensing and concerns a pipette comprising at least one aspiration channel with a piston. At the lower end of the aspiration channel there is an extension channel () and at its end a pipette tip mounting piece () onto which a pipette tip () is attached. On the pipette tip mounting piece there is a surrounding groove () and in the groove a sealing ring (). The width of the groove in the axial direction is at least 1.1 times the thickness of the sealing ring in the axial direction. When the mounting piece is pushed into the pipette tip, the inner wall of the tip can move the sealing ring upwards in the groove. The construction can provide a reliable sealing despite of inherent dimension differences between different tips and mounting pieces.