US3261224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nut for ball screw and nut assembly
Assignee: Specialties Development Corp
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Filing: 1964-01-27
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Granted: 1966-07-19
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Expires: 1984-01-27
Abstract
No abstract record available.
Inventors
- 👤 David C Anthony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:50
CPC Classifications
F; F16; F16H; F16H25/00; F16H25/18; F16H25/20; F16H25/22; F16H25/2204; F16H25/2214; F16H25/2223; 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
144 words
IN A BALL SCREW AND NUT ASSEMBLY, THE COMBINATION OF A SCREW MEMBER HAVING EXTERNAL HELICAL BALL GROOVE CON VOLUTIONS THEREON, A NUT MEMBER HAVING A BORE PROVIDED WITH INTERNAL HELICAL BALL GROOVE CONVOLUTIONS THEREIN FOR COOPERATION WITH SAID SCREW MEMBER BALL GROOVE CONVOLUTIONS TO CONFINE BALLS THEREIN AND HAVING AN AXIALLY EXTENDING RADIALLY FACING ARCUATE SLOT PASSING THROUGH SAID BALL GROOVE CONVOLUTIONS, BALLS CONFINED BETWEEN CERTAIN OF SAID SCREW AND NUT MEMBER GROOVE CONVOLUTIONS, AND A CROSS-OVER ELEMENT HAVING CROSS-OVER GROOVE MEANS FOR TRANSFERRING AND CIRCULATING BALLS WITHIN ONE COMPLETE SCREW AND NUT MEMBER GROOVE CONVOLUTION, SAID ELEMENT HAVING AN ARCUATE BASE APPROXIMATELY MATCHING SAID SLOT AND DIMENSIONED TO BE MOVABLY POSITIONED IN SAID SLOT TO ENABLE SAID ELEMENT TO ROTATE SLIGHTLY IN SAID SLOT AND TO MOVE SLIGHTLY IN AN AXIAL DIRECTION IN RESPONSE TO BALLS TRANSFERRED BY SAID CROSS-OVER GROOVE MEANS.
Claim 2
Dependent Claim
144 words
IN A BALL SCREW AND NUT ASSEMBLY, THE COMBINATION OF A SCREW MEMBER HAVING EXTERNAL HELICAL BALL GROOVE CON VOLUTIONS THEREON, A NUT MEMBER HAVING A BORE PROVIDED WITH INTERNAL HELICAL BALL GROOVE CONVOLUTIONS THEREIN FOR COOPERATION WITH SAID SCREW MEMBER BALL GROOVE CONVOLUTIONS TO CONFINE BALLS THEREIN AND HAVING AN AXIALLY EXTENDING RADIALLY FACING ARCUATE SLOT PASSING THROUGH SAID BALL GROOVE CONVOLUTIONS, BALLS CONFINED BETWEEN CERTAIN OF SAID SCREW AND NUT MEMBER GROOVE CONVOLUTIONS, AND A CROSS-OVER ELEMENT HAVING CROSS-OVER GROOVE MEANS FOR TRANSFERRING AND CIRCULATING BALLS WITHIN ONE COMPLETE SCREW AND NUT MEMBER GROOVE CONVOLUTION, SAID ELEMENT HAVING AN ARCUATE BASE APPROXIMATELY MATCHING SAID SLOT AND DIMENSIONED TO BE MOVABLY POSITIONED IN SAID SLOT TO ENABLE SAID ELEMENT TO ROTATE SLIGHTLY IN SAID SLOT AND TO MOVE SLIGHTLY IN AN AXIAL DIRECTION IN RESPONSE TO BALLS TRANSFERRED BY SAID CROSS-OVER GROOVE MEANS.
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) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |