Pipette for use with a pipette tip
US11426720B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 8, 2020 |
| Grant date | Aug 30, 2022 |
| Priority date | — |
| Expiry date | Dec 4, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01L2400/0487
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A pipette comprises a pipette housing comprising an upper end and a lower end, a nipple configured to contact and retain a pipette tip, a drive apparatus configured to aspirate a liquid specimen into the pipette tip and expel the liquid specimen from the pipette tip, and an ejection apparatus. The ejection apparatus comprises a curved support rotatably mounted within the pipette housing, an ejection rod, a first sensing element positioned on the ejection rod and configured to be guided on a first curve on a perimeter of the curved support, and an operating element coupled to the curved support and configured to rotate relative to the pipette housing. The ejection apparatus is configured to rotate the curved support out of a start position by rotating the operating element. The first curve displaces the first sensing element downward a the ejection rod moves the pipette tip off of the nipple.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.