US Patent: 3,393,577
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| Pre-Loaded Ball Screw Assembly
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Patentee:
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| Bernard R. Better (exact or similar names) - Chicago, Cook County, IL |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jun. 29, 1966 |
| Granted: |
Jul. 23, 1968 |
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Joel Havens
"Vintage Machinery" entry for Scully-Jones & Co.
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Description: |
| Claim:
In a ball screw assembly, the improvement comprising, in combination, a screw member, a pair of nut members mounted on said screw member and each interconnected therewith by at least one corresponding ball circuit, a housing, said nut members being disposed within said housing and in a predetermined rotary position on said screw member relative to one another to develop counteracting axial pre-load forces on said nut members urging the same in opposite directions relative to said screw member, one of said nut members being rigidly affixed to said housing and the other of said nut members being rotatably adjustable relative to said one nut member and said housing, and adjusting screw means carried by said housing and positioned for engagement with said other nut member for controlling the rotary position of said other nut member relative to said one nut member and said housing, said adjusting screw means being manually rotatable in small increments for varying said rotary position of said other nut member relative to said one nut member and said housing and thereby adjusting the magnitude of said pre-load forces in corresponding increments. |
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