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:
Aug. 09, 1977
Filed:
Jul. 14, 1976
Marvin Stanley Towsend, Oxon Hill, MD (US);
Other;
Abstract
A magnetic stirring apparatus is disclosed having the capability of stirring the liquid contents of a plurality of containers, each having a magnetic stir bar placed therein. The apparatus has an energy source which drives a group of drive magnets whose magnetic fluxes are translated beneath a horizontal support surface of low magnetic permeability in a predetermined pattern of parallel lines or concentric circles. Upon the surface, the plurality of containers, having the magnetic stir bars therein, are placed. The repetitive translation of the magnetic fluxes of the group of drive magnets in a predetermined pattern of parallel lines or concentric circles defines a continuous region on the horizontal support surface serving as magnetic driver for the magnetic stir bars in containers placed upon it. This continuous region provides an indeterminate number of positions for placement of the containers to be stirred along its extent, as opposed to providing a predetermined number of discrete stations. Interaction between the translating magnetic fluxes of the drive magnets beneath the horizontal support surface and the magnetic stir bars above the horizontal support surface causes rotational motion of the magnetic stir bars, thereby stirring the contents of the containers.