Microcentrifuge tube with upwardly projecting lid extension
US5225165A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 11, 1992 |
| Grant date | Jul 6, 1993 |
| Priority date | — |
| Expiry date | May 11, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S436/81
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A microcentrifuge tube or other thermoplastic sample container having a round opening and a frictionally seated sealing lid, the lid having a size and shape to cover the perimeter of the tube opening and maintain the inside of the tube free of any contaminant. The lid viewed on an upright closed container has a downwardly extending annular portion shaped to sealing fit inside the opening, the lid further having an integral upwardly projecting lid extension configured and arranged on top of the lid to facilitate aseptic opening, grasping and identification-labeling of the container. The location, angle and size of the lid extension allow mechanical pressure to be used on top of the lid, rather than beneath the lid, to open the container. The improved apparatus and method for opening the container functions to prevent sample contamination which could otherwise occur when a fingernail or other container opening instrument is inserted beneath, and contacts some portion(s) of the underside of the lid. The location, size, and surface finish of the lid extension also allow grasping of the microcentrifuge tube after placement in a centrifuge rotor or storage rack, as well as labeling the t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.