公开(公告)号：US3873216A

公开(公告)日：1975-03-25

申请号：US34247073

申请日：1973-03-19

Applicant: BECKMAN INSTRUMENTS INC

Inventor： GROPPER LEE ,  THURBER WALTER W

IPC: G01N21/07 ,  G01N21/27 ,  G01N21/45 ,  G01J1/02

CPC classification number: G01N21/276 ,  G01N21/07 ,  G01N21/274 ,  G01N21/45

Abstract: A photoelectric scanner associated with an ultracentrifuge can be calibrated by rotating in the ultracentrifuge a sample cell having, in place of a centerpiece containing sample solution, a disc having two slits, one slit having substantially uniform width, the other slit having stepwise graduated width, and comparing the output signal of the scanner with the known differences in width between the two slits of the disc.

Abstract translation: 与超速离心机相关联的光电扫描器可以通过在超速离心机中旋转来校准具有代替含有样品溶液的中心件的样品池，具有两个狭缝的盘，具有基本上均匀宽度的一个狭缝，另一个狭缝具有逐级刻度宽度， 并且将扫描仪的输出信号与盘的两个狭缝之间的已知宽度差异进行比较。

公开(公告)号：US3699287A

公开(公告)日：1972-10-17

申请号：US3699287D

申请日：1971-04-28

Applicant: BECKMAN INSTRUMENTS INC

Inventor： STAHL LAWRENCE E ,  GROPPER LEE

IPC: H01H35/14

CPC classification number: H01H35/144

Abstract: In a centrifuge including a centrifuge rotor and driving means for spinning the rotor at selected rotational speeds the improvement comprising a device for interrupting power to the driving means in the event of excessive rotor oscillations including an actuating means carried solely by the centrifuge rotor and switch means mounted in spaced relation to the lower peripheral portion of the rotor adjacent to the path of travel of the actuating means and in electrical circuit with the driving means.

Abstract translation: 在包括离心机转子和用于以选定转速旋转转子的驱动装置的离心机中，改进包括用于在转子振荡过度的情况下中断对驱动装置的动力的装置，包括仅由离心机转子和开关装置承载的致动装置 以与驱动装置的行进路径相邻并且与驱动装置的电路相邻的方式安装在转子的下周边部分上。