Chemistry: physical processes
Patent
1979-11-01
1981-08-25
Jenkins, Robert W.
Chemistry: physical processes
233 14R, B04B 912
Patent
active
042854636
ABSTRACT:
A decanting centrifuge particularly useful for clinical laboratory procedures requiring the washing and packing of red cells or other particles. An electromagnet having upper and lower planar pole faces rotates to drive a removable rotor head assembly and, during the decant cycle, holds a plurality of magnetically-attractable tube carriers in substantially vertical positions against its planar pole faces so that supernatant liquid is centrifugally discharged from the open upper ends of the tubes. Each tube carrier comprises a tube-holding member and a contact member, both of which have their upper end portions pivotally suspended from a support ring which is provided by the rotor assembly and which is coaxial with the rotatable magnet. The planar surfaces of the contact members engage the planar pole faces when the centrifuge is at rest and also when the electromagnet is energized and the rotor assembly is rotated to decant the liquid contents of the centrifuge tubes. Each tube-holding member has two outer side walls which meet along converging planes so that such walls will engage a centrifuge tube along a pair of spaced parallel lines during centrifuge operation, thereby permitting centrifuge tubes of different selected outside dimensions to be supported within the open-topped cavity of such tube-holding member.
REFERENCES:
patent: 3401876 (1968-09-01), Lucas
patent: 3420437 (1969-01-01), Blum
patent: 3712535 (1973-01-01), Genese
patent: 3722789 (1973-03-01), Kennedy
patent: 3877634 (1975-04-01), Rohde
patent: 3951334 (1976-04-01), Fleming
American Hospital Supply Corporation
Jenkins Robert W.
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