| Patents for U. S. Electrical Motors, Inc. |
Patents 1 -
15
of 16
      |
| Number | Date | Patentee | Title | Type |
| 2,023,421 | Dec. 10, 1935 | D. Heyer | Flexible power transmission device | industrial machine pulleys and belt drive mechanisms |
| 2,256,114 | Sep. 16, 1941 | D. Heyer | Variable speed drive with multiple belts | industrial machine pulleys and belt drive mechanisms |
| 2,384,169 | Sep. 04, 1945 | G.E. Huck, F.O. Luenberger | Controlling pressure in a fluid-filled motor | electric motors |
| 2,568,861 | Sep. 25, 1951 | F.O. Luenberger | Means for preventing air leakage through lubricated bearings | motor bearings |
| 2,607,969 | Aug. 26, 1952 | R.S. Thacker, W.M. Evans | Spacer for casting squirrel cage rotors | electric motor making |
| 2,708,985 | May 24, 1955 | W.M. Evans, R.A. Morrison | Lubrication system | electric motors |
| 2,721,774 | Oct. 25, 1955 | F.O. Luenberger | Thrust bearing for vertical motor | motor bearings |
| 2,793,714 | May 28, 1957 | F.O. Luenberger | Lubrication system for enclosed transmission | industrial machine lubrication |
| 2,813,763 | Nov. 19, 1957 | A.C. Eisenhart | Lubricant cooling system | motor cooling |
| 2,825,827 | Mar. 04, 1958 | F.O. Luenberger | Ventilated electric motors | motor cooling |
| 2,919,359 | Dec. 29, 1959 | F.O. Luenberger | Dynamoelectric machine provided with sealing means, and process for making same | electric motor making |
| 2,921,553 | Jan. 19, 1960 | F.O. Luenberger | Adjustable date indicator | |
| 2,961,208 | Nov. 22, 1960 | F.O. Luenberger | Adjustable mounting for electrical motors | motor mounts |
| 2,962,128 | Nov. 29, 1960 | F.O. Luenberger | Mechanism for preventing reverse motion of electric motor shafts | electric motors |
| 2,991,380 | Jul. 04, 1961 | G.T. Pfleger | Magnetic core structure for dynamo-electric machines | induction motors |
