| 摘要 |
1523190 Centrifugal separators COMPUR-WERK GmbH & CO 22 Nov 1976 [26 Nov 1975 6 July 1976] 48566/76 Heading B2P A centrifuge for separating the components of test samples, e.g. of blood, comprises a plate-like rotor 10 provided with recesses 10r extending radially of the axis of rotation of the rotor, sample-containing tubular vessels 18, e.g. capillary tubes, adapted to be received in the recesses 10r, resilient buffer means 14 inserted between the outer end of each vessel and a counter bearing surface on the rotor, and a clamping piece 16 displaceable axially on the hub 10a of the rotor, the inner ends of the vessels 18 bearing on an abutment surface of the clamping piece 16 in such a way that each vessel is radially shifted, pressed against the buffer means 14 and thereby clamped when the clamping piece is displaced axially in one direction. Each buffer means 14 is inserted in an opening 10f and bears against the flanged outer rim 10b of the rotor 10. The inner ends of the vessels 18 are received in slots 16r in the clamping piece 16. Abutment faces 10b, 10h and 10i, 16i on the rotor and clamping piece define two limiting positions of the clamping piece relative to the rotor, a first position as shown in Fig. 3 for insertion of the vessel 18 and a second position, Fig. 1 (not shown), for clamping of the vessel after axial displacement of the clamping piece. In a modification, Figs. 4 to 9 (not shown), the clamping piece has associated with it a return spring (120) which biasses it to the first position, the clamping piece further carrying a pivotal lever having a locking surface which cooperates with a corresponding surface on the rotor and holds the clamping piece in the second position against the spring force. A reading scale 10s for measuring the relative proportions of the separated components of the sample is provided along each receiving recess 10r in the rotor. |
