Title: Tube adaptor for centrifuge rotor bucket

Abstract: An adaptor for use in a centrifuge bucket for evenly distributing a number of cylindrical test tubes thereacross and for maximizing the number of test tubes positionable in the bucket. The adaptor comprises a thin, flat, disc-shaped plate having a diameter approximately equal to the inside diameter of the bucket and a plurality of separate, unconnected partitions made integral with and extending normal to one side of the plate, the partitions defining a plurality of cavities for receipt of the bases of the test tubes. The partitions support substantially less than the entire circumference of each tube and have lengths which are substantially less than the lengths of the tubes. A lifting tray and handle provide means for lifting the adaptor and test tubes from the rotor bucket.

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Inventors: Conn, Thomas E. (Palo Alto, CA, US)
Grilli, Victor J. (Mountain View, CA, US)

Application Number: 457710
Filing Date: 1974-04-04
Publication_date: 1977-06-21
Assignee: Beckman Instruments, Inc. (Fullerton, CA)
Primary Class(es): 494/20 206/427, 211/74, 220/23.88
Other Classes:
US Patent Ref:

D131007	Jan, 1942	Carlson	211/74.
1010016	Nov, 1911	Campau	233/26.
1307482	Jun, 1919	Cheek	211/74.
1334109	Mar, 1920	Mojonnier	233/26.
1698489	Jan, 1929	Bickford	211/74.
2110308	Mar, 1938	Nelson	233/26.
2416999	Mar, 1947	Keith et al.	217/19.
2510591	Jun, 1950	Listman	211/74.
2565299	Aug, 1951	Erickson	211/74.
2821339	Jan, 1958	Wyble	233/26.
3335894	Aug, 1967	Laird	220/21.
3674198	Jul, 1972	Eberle	233/26.

Other Refs: 576,395607,862

May, 1959	CA
Sep, 1960	IT

Primary Examiner: Krizmanich, George H.
Assistant Examiner:
Attorney: Steinmeyer; R. J., Mehlhoff; F. L., May; W. H.