Patent US3258983A successfully refreshed from Google Patents.
US3258983A
Expired / Lapsed
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Preloaded ball screw and nut assembly
Assignee: SARGENT ENGINEERING Corp
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Filing: 1964-04-13
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Granted: 1966-07-05
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Expires: 1984-04-13
Abstract
No abstract record available.
Inventors
- 👤 Valenti Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:26
CPC Classifications
F; F16; F16H; F16H25/00; F16H25/18; F16H25/20; F16H25/22; F16H25/2204; F16H25/2209; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T74/18728; Y10T74/19; Y10T74/19623; Y10T74/19642; Y10T74/19698; Y10T74/19702; Y10T74/19744; Y10T74/19781
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
IN A PRELOADED BALL SCREW AND NUT ASSEMBLY, THE COMBINATION OF: A SCREW HAVING A CONTINUOUS EXTERANAL BALL-RECEIVING GROOVE OF CONSTANT HELICAL LEAD, A NUT HAVING A CONTINUOUS INTERNAL BALL-RECEIVING GROOVE, A PLURALITY OF BALLS IN SAID GROOVES INTERPOSED BETWEEN SAID SCREW AND SAID NUT, THE PORTIONS OF SAID INTERNAL GROOVE ADJACENT THE OPPOSITE ENDS OF SAID NUT HAVING A HELICAL LEAD WHICH IS THE SAME AS THAT OF SAID EXTERNAL GROOVE ON SAID
Claim 2
Dependent Claim
74 words
IN A PRELOADED BALL SCREW AND NUT ASSEMBLY, THE COMBINATION OF: A SCREW HAVING A CONTINUOUS EXTERANAL BALL-RECEIVING GROOVE OF CONSTANT HELICAL LEAD, A NUT HAVING A CONTINUOUS INTERNAL BALL-RECEIVING GROOVE, A PLURALITY OF BALLS IN SAID GROOVES INTERPOSED BETWEEN SAID SCREW AND SAID NUT, THE PORTIONS OF SAID INTERNAL GROOVE ADJACENT THE OPPOSITE ENDS OF SAID NUT HAVING A HELICAL LEAD WHICH IS THE SAME AS THAT OF SAID EXTERNAL GROOVE ON SAID
References Cited (Backward Citations)
US2936645A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-04 | 1970-01-03 | 1970-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-04 | 1974-01-03 | 1974-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-04 | 1978-01-03 | 1978-07-05 | $7700.00 | Window Closed / Lapsed |