EP 0035762 B1 19841003 - DEVICE FOR MIXING A LIQUID CONTAINED IN A TEST TUBE
Title (en)
DEVICE FOR MIXING A LIQUID CONTAINED IN A TEST TUBE
Publication
Application
Priority
SE 8001912 A 19800311
Abstract (en)
[origin: US4345843A] An apparatus for oscillating a test tube so as to agitate the content thereof, comprises an annular holder from which the test tube can be hung by means of a flange located on the upper end of the test tube, in a manner such that the test tube is restricted swingable outwardly in all directions from its vertical rest position. Mounted externally of the test tube bottom is a plate of soft-magnetic material or a plate-shaped permanent magnet with its magnetic axis coinciding with the axis of the test tube. A plurality of electromagnets for example four in number, are stationarily arranged with their respective first poles located in a common horizontal plane at a distance beneath the lower end of the test tube, in a manner such that the poles lie on a circle concentrical about the vertical rest position of the test tube. The opposite second poles of the electromagnets are connected to a common, soft-magnetic pole piece, and the electromagnets are energized in a predetermined sequence and in predetermined directions, so that as a result of the co-action of said first poles of the electromagnets and the soft-magnetic plate or plate-shaped permanent magnet on the test-tube, the test-tube is caused to effect a nutational rotation about the vertical rest position, with the apex of the nutational rotation located substantially in the center of the annular holder.
IPC 1-7
IPC 8 full level
B01F 11/00 (2006.01); B01F 13/08 (2006.01)
CPC (source: EP US)
B01F 31/27 (2022.01 - EP US); B01F 33/45 (2022.01 - EP US)
Designated contracting state (EPC)
CH DE FR GB LI SE
DOCDB simple family (publication)
EP 0035762 A2 19810916; EP 0035762 A3 19830309; EP 0035762 B1 19841003; DE 3166399 D1 19841108; JP S56147621 A 19811116; JP S621286 B2 19870112; SE 8001912 L 19810912; US 4345843 A 19820824
DOCDB simple family (application)
EP 81101599 A 19810306; DE 3166399 T 19810306; JP 3593781 A 19810310; SE 8001912 A 19800311; US 23707881 A 19810223