Vertical electromagnetic shaker for biological and chemical specimens
US6659637B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 3, 2001 |
| Grant date | Dec 9, 2003 |
| Priority date | — |
| Expiry date | Feb 21, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12M27/16
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An electromagnetic vibratory microplate shaker is disclosed of simplified design and improved mixing capability over previously known microplate shaker devices, comprising an electromagnetic drive assembly mounted within a rigid base and operatively connected to a microplate support platform. The support platform is in turn supported by a plurality of horizontally arrayed leaf springs. During operation, an electromagnet is rapidly energized and de-energized causing an armature of the drive assembly to be pulled in and released up to 7,200 times per minute, in turn imparting a vertical reciprocating vibration to the support platform and the microplates or multi-tube racks held thereon. Means are provided for adjusting the amplitude of the vibration as necessary to enable the entire volume of liquid within each microplate well or tube to be vertically displaced within the well or tube during each vibration cycle, thus ensuring thorough mixing of the contents of each microplate well or tube irrespective of its diameter, while keeping suspended solids truly suspended during the mixing cycle. Also provided is a static indicia of amplitude of vibration fixedly mounted on the support plat…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.