Improvements in or relating to vacuum pumps

摘要

747,080. High vacuum pumps. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. Aug. 6, 1954 [Sept. 23, 1953], No. 22900/54. Class 8(1). In a vacuum pump comprising an inlet duct 1 and an output duct 4 connected to a chamber 2 in which a disc 3 is rotated and in which the disc 3 is heated e.g. by an element 8 when adjacent the output duct 4, the molecules in the duct 1 are ionized and driven into the disc 3 by an anode and cathode assembly 7, 6. The disc 3 may be made negative in relation to the cathode 6.