| All Patents in class 74/441 |
Patents 31 -
41
of 41
      |
| Number | Date | Patentee | Title | Type |
| 2,903,902 | Sep. 15, 1959 | C.A. Berggren | Backlash takeup mechanism | |
| 2,916,931 | Dec. 15, 1959 | F.W. Cunningham | Motor Control System for Automatic Machine Tools | numerically controlled lathes |
| 2,952,190 | Sep. 13, 1960 | O.W. Barker | Backlash Eliminator | milling machines |
| 2,959,976 | Nov. 15, 1960 | F. Zankl | Backlash Eliminator | metalworking machine mechanisms |
| 3,031,897 | May 01, 1962 | W.B. Seidel | Machine Tool Anti-Backlash Motion Transmitting Mechanism | metalworking machine mechanisms |
| 3,119,307 | Jan. 28, 1964 | H.B. Opferkuch | Automatic Backlash Eliminator | milling machines |
| 3,141,349 | Jul. 21, 1964 | D.I. McDonald | Ball Bearing Screw and Nut Mechanism | metalworking machine mechanisms |
| 3,393,577 | Jul. 23, 1968 | B.R. Better | Pre-Loaded Ball Screw Assembly | metalworking machine bearings |
| 3,468,179 | Sep. 23, 1969 | J.J. Hughes, R.K. Sedgwick | Recirculating ball worm drive | metalworking power transmission |
| 3,810,310 | May 14, 1974 | P.A. Morgan | Micrometer Measuring Devices | micrometers |
| 4,487,087 | Dec. 11, 1984 | R. Johnstone | Ball Nut Having Adjustable Preload | metalworking machine mechanisms |
