Chemistry: physical processes
Patent
1976-09-29
1978-01-17
Krizmanich, George H.
Chemistry: physical processes
211 74, B04B 502
Patent
active
040687988
ABSTRACT:
Stoppers are separated from tubes they close by suspending a stoppered tube by its stopper, placing the suspended tube in a swinging bucket centrifuge, subjecting the suspended tube to centrifugal force.
This may be accomplished by adapting a test tube rack to be placed in a centrifuge's swinging bucket type carrier. The rack is a two piece unit having upper and lower members that are separable. The test tubes use stoppers having an enlarged portion with a diameter which exceeds that of the test tube such that the tubes may be suspended from the upper member by their stoppers. The rack has a height which exceeds that of the test tubes such that when the rack with the tubes suspended therein are subjected to centrifugal force, the tubes withdraw from the stoppers. This leaves the stoppers positioned on the upper surface of the upper member. If now the upper member is lifted away, the stoppers are removed leaving the unstoppered test tubes positioned in the lower member of the rack.
REFERENCES:
patent: 1199987 (1916-10-01), Husted
patent: 2615448 (1952-10-01), Fields
patent: 3670530 (1972-06-01), Filipak
patent: 3674198 (1972-07-01), Eberle
patent: 3720368 (1973-03-01), Allen
patent: 3778232 (1973-12-01), McMorrow
patent: 3786985 (1974-01-01), Blaivas
patent: 3830425 (1974-08-01), Stallmann
patent: 3884354 (1975-05-01), Guenther et al.
patent: 3905772 (1975-09-01), Hartnett et al.
patent: 3980227 (1976-09-01), Witty et al.
E. I. Du Pont de Nemours and Company
Krizmanich George H.
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