| 摘要 |
PCT No. PCT/CH88/00041 Sec. 371 Date Oct. 24, 1988 Sec. 102(e) Date Oct. 24, 1988 PCT Filed Feb. 19, 1988 PCT Pub. No. WO88/06063 PCT Pub. Date Aug. 25, 1988.A lifting device, including: a base pedestal; a stand located above the base pedestal; a carriage for lifting a laboratory apparatus; and lifting structure for lifting a carriage along the stand, the lifting structure including: a rotatable inertial mass located within the base pedestal; a movable actuating lever connected to the rotatable inertial mass for rotating the inertial mass; and connecting structure for operatively connecting the carriage to the rotatable inertial mass whereby the carriage can be lifted by rotating the rotatable inertial mass. The rotary evaporator is heated by a system including: a bath; a base pedestal for supporting the bath; handles for lifting the system; and a holder for holding a heater and for holding structure for controlling the heater. The rotary evaporator is rotated by a system including: a base pedestal for providing stability; a taper sleeve; a motor located adjacent the taper sleeve; and a toothed-belt drive between the motor and the taper sleeve for driving the taper sleeve.
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