| Patents for Walter Ernst |
Patents 31 -
45
of 47
      |
| Number | Date | Patentee | Title | Type |
| 2,021,353 | Nov. 19, 1935 | W. Ernst | Hydraulic Pump or Motor | hydraulic pumps |
| 2,021,354 | Nov. 19, 1935 | W. Ernst | External Adjustment for Hydraulic Pump Bearings | hydraulic pumps |
| 2,600,746 | Jun. 17, 1952 | W. Ernst | Fluid Pressure Control Valve | hydraulic apparatus |
| 2,606,571 | Aug. 12, 1952 | W. Ernst | Multipurpose control valve | hydraulic apparatus |
| 2,612,114 | Sep. 30, 1952 | W. Ernst | Vane Pump or Motor | hydraulic apparatus |
| 2,612,115 | Sep. 30, 1952 | W. Ernst | Vane Pump and Vane Therefor | hydraulic apparatus |
| 2,682,748 | Jul. 06, 1954 | W. Ernst | Restrictor Valve for a Servomotor Circuit | hydraulic apparatus |
| 2,730,074 | Jan. 10, 1956 | W. Ernst | Servo-motor valve | hydraulic apparatus |
| GB-850,425 | Oct. 05, 1960 | F.G. Krafft, W. Ernst | A hydraulic circuit embodying a combined pump and control unit | grinding machines |
| 2,985,109 | May 23, 1961 | W. Ernst | Hydraulic Pump | hydraulic apparatus |
| CA-628,890 | Oct. 10, 1961 | W. Ernst, F.G. Krafft | Pump control | grinding machines |
| 3,011,449 | Dec. 05, 1961 | W. Ernst | Vaned Hydraulic Unit | hydraulic apparatus |
| 3,015,212 | Jan. 02, 1962 | W. Ernst, F.G. Krafft | Pump Control | hydraulic apparatus |
| GB-913,197 | Dec. 19, 1962 | F. Krafft, W. Ernst | Improvements in hydraulic systems | grinding machines |
| CA-656,461 | Jan. 22, 1963 | F.G. Krafft, W. Ernst | Control pump | grinding machines |
