Chemistry: physical processes
Patent
1975-04-09
1976-12-14
Krizmanich, George H.
Chemistry: physical processes
233 1R, B04B 912
Patent
active
039971040
ABSTRACT:
A rotor for a centrifuge including a symmetrically shaped rotor body adapted for rotation about its axis and including a suitable cavity for receipt of samples to be centrifuged. The rotor body is provided with means adapted to cooperate with a centrifuge driving means for rotating the rotor body abouts its axis for centrifuging liquid samples in the cavity. The rotor body is provided with an annular shoulder formed around the top of the rotor and surrounding the opening to the sample cavity, the shoulder having an inward facing surface adapted to receive a thin flexible disc having a bowed shape in the direction of the opening to the cavity so that the edge of the disc seats against the annular shoulder. In its preferred form the disc has a diameter greater than that of the annular space bounded by said shoulder and is bowed by a force against the center portion of the disc causing it to flex in the downward direction thereby assuming a "dish-shape" covering the opening to the cavity of the rotor body.
REFERENCES:
patent: 2765097 (1956-10-01), Dobson et al.
patent: 2827229 (1958-03-01), Blum
patent: 3456875 (1969-07-01), Hein
patent: 3484016 (1969-12-01), Turner
patent: 3845872 (1974-11-01), Towns et al.
Krizmanich George H.
Mehlhoff F. L.
Steinmeyer R. J.
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