US3371551A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nut and screw mechanism
Assignee: Duff Norton Co Inc
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Filing: 1966-09-01
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Granted: 1968-03-05
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Expires: 1986-09-01
Abstract
No abstract record available.
Inventors
- 👤 Anthony G Profet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:18
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: 1
Claim 1
Independent Claim
134 words
A BALL SCREW JACK MECHANISM COMPRISING A HOUSING, AN ANNULAR DRIVE MEMBER SEATED IN SAID HOUSING FOR ROTATION THEREIN, MEANS FOR DRIVING SAID ANNULAR DRIVE MEMBER, A NUT MEMBER SEATED IN SAID ANNULAR DRIVE MEMBER FOR ROTATION THEREWITH, SAID NUT MEMBER HAVING A HELICALLY THREADED INTERIOR SURFACE, A SCREW MEMBER EXTENDING THROUGH SAID HOUSING AND NUT MEMBER AND HAVING A HELICALLY THREADED EXTERIOR SURFACE MATING WITH SAID NUT MEMBER THREADED SURFACE, A PLURALITY OF BALL BEARING ELEMENTS DISPOSED FOR CIRCULATION IN THE THREADS OF SAID MATING SURFACES FOR DRIVINGLY CONNECTING THE SCREW MEMBER TO SAID NUT MEMBER, SAID NUT MEMBER HAVING A PLURALITY OF LONGITUDINALLY EXTENDING, THREAD INTERRUPTING, RECESSES FORMED IN SAID THREADED SURFACE THEREOF, SAID RECESSES BEING LONGITUDINALLY COEXTENSIVE FOR INTERRUPTION OF A PLURALITY OF COMMON REVOLUTIONS OF THE THREADS OF THE NUT
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) | 1971-03-05 | 1971-09-04 | 1972-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-05 | 1975-09-04 | 1976-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-05 | 1979-09-04 | 1980-03-05 | $7700.00 | Window Closed / Lapsed |