US Patent: 5,535,638
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| Antifriction Screw Drive
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Patentee:
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| Robert H. Willison (exact or similar names) - Cincinnati, Hamilton County, OH |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Nov. 10, 1994 |
| Granted: |
Jul. 16, 1996 |
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Joel Havens
"Vintage Machinery" entry for Cincinnati Milling Machine Co.
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Description: |
| Abstract:
A screw and nut have intermeshed helical threads which may be of a form selected from a variety of shapes; for example, a buttress thread. A ball track is formed by cooperating grooves in opposing flanks of the screw and nut threads, and a circuit of balls are disposed within the ball track. The result is a screw system with improved thrust load-carrying capability. |
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