US3170336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ball nut and screw assembly
Assignee: Motors Liquidation Co
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Filing: 1962-11-19
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Granted: 1965-02-23
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Expires: 1982-11-19
Abstract
No abstract record available.
Inventors
- 👤 Arthur F Bohnhoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:22
CPC Classifications
F; F16; F16H; F16H25/00; F16H25/18; F16H25/20; F16H25/22; F16H25/2204; F16H25/2214; F16H25/2219; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/19698; Y10T74/19702; Y10T74/19744; Y10T74/19749; Y10T74/19767
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
185 words
IN A BALL NUT DEVICE FOR A RECIRCULATING BALL NUT AND SCREW ASSEMBLY, A BALL NUT PROVIDED WITH A HELICAL GROOVE AND A LONGITUDINAL RETURN PASSAGE AND A BALL RETURN DEVICE SECURED TO ONE END OF THE BALL NUT FOR PROVIDING IN CONJUNCTION WITH SAID ONE END OF THE BALL NUT PASSAGEWAY MEANS BETWEEN THE HELICAL GROOVE OF THE BALL NUT AND THE LONGITUDINAL RETURN PASSAGE, SAID PASSAGEWAY MEANS INCLUDING A TERMINAL HELICAL PASSAGE PORTION HAVING THE SAME HELICAL PITCH AS THE HELICAL GROOVE, AN EJECTING PASSAGE PORTION HAVING A WALL PORTION PROVIDING A CAM SURFACE OF SUBSTANTIALLY LENGTH HAVING A DIFFERENT PITCH TO DIVERGE FROM THE HELICAL PATH BY ABOUT HALF THE WIDTH OF SAID GROOVE AND AN INCREASING DEPTH TO A POINT WHERE THE BALLS ARE FULY ACCOMMODATED WITHIN THE EJECTING PASSAGE PORTION AND A GENERALLY RADIAL PORTION CONNECTED TO SAID LONGITUDINAL RETURN PASSAGE AND ANOTHER BALL RETURN DEVICE SECURED TO THE BALL NUT AT A POINT SPACED FROM SAID ONE END OF THE BALL NUT PROVIDING A BALL PASSAGEWAY BETWEEN THE HELICAL GROOVE OF THE BALL NUT AND THE LONGITUDINAL RETURN PASSAGE.
Claim 2
Dependent Claim
185 words
IN A BALL NUT DEVICE FOR A RECIRCULATING BALL NUT AND SCREW ASSEMBLY, A BALL NUT PROVIDED WITH A HELICAL GROOVE AND A LONGITUDINAL RETURN PASSAGE AND A BALL RETURN DEVICE SECURED TO ONE END OF THE BALL NUT FOR PROVIDING IN CONJUNCTION WITH SAID ONE END OF THE BALL NUT PASSAGEWAY MEANS BETWEEN THE HELICAL GROOVE OF THE BALL NUT AND THE LONGITUDINAL RETURN PASSAGE, SAID PASSAGEWAY MEANS INCLUDING A TERMINAL HELICAL PASSAGE PORTION HAVING THE SAME HELICAL PITCH AS THE HELICAL GROOVE, AN EJECTING PASSAGE PORTION HAVING A WALL PORTION PROVIDING A CAM SURFACE OF SUBSTANTIALLY LENGTH HAVING A DIFFERENT PITCH TO DIVERGE FROM THE HELICAL PATH BY ABOUT HALF THE WIDTH OF SAID GROOVE AND AN INCREASING DEPTH TO A POINT WHERE THE BALLS ARE FULY ACCOMMODATED WITHIN THE EJECTING PASSAGE PORTION AND A GENERALLY RADIAL PORTION CONNECTED TO SAID LONGITUDINAL RETURN PASSAGE AND ANOTHER BALL RETURN DEVICE SECURED TO THE BALL NUT AT A POINT SPACED FROM SAID ONE END OF THE BALL NUT PROVIDING A BALL PASSAGEWAY BETWEEN THE HELICAL GROOVE OF THE BALL NUT AND THE LONGITUDINAL RETURN PASSAGE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |