PUMP PLANT Russian patent published in 1997 - IPC

FIELD: vacuum pumps and compressors. SUBSTANCE: an electric motor, with a drive shaft secured in it is positioned in the sealed casing with inlet and outlet connections. The pumping assembly has a case with end face covers. A rotor, positioned on the drive shaft, is installed in the case forming the working chambers. The rotor encloses the shaft and is positioned in a spaced relation to it. The shaft is installed in bearing supports located in the casing. The coupling is made in the form of a profiled disk secured on the rotor and having holes evenly spaced in circumference in parallel with the disk axis. The disk is coupled to the motor armature by means of flexible members secured on the armature end face surface and positioned in the disk holes. EFFECT: improved design. 2 cl, 3 dwg