Patent US3178958A successfully refreshed from Google Patents.
US3178958A
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Jack mechanism
Assignee: Duff Norton Co Inc
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Filing: 1964-03-06
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Granted: 1965-04-20
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Expires: 1984-03-06
Abstract
No abstract record available.
Inventors
- 👤 Robert J Beck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:39
CPC Classifications
B; B66; B66F; B66F3/00; B66F3/08; B66F3/18; F; F16; F16H; F16H25/00; F16H25/18; F16H25/20; F16H25/22; F16H25/2204; F16H2025/2062; F16H2025/209; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/19698; Y10T74/19702; Y10T74/19744; Y10T74/19749; Y10T74/19753
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
A JACK MECHANISM COMPRISING A SUPPORT HOUSING, A COMPOSITE OPERATING MEMBER MOUNTED FOR ROTATION IN SAID HOUSING AND RETAINED IN A FIXED DISPOSITION THEREIN, A JACK SCREW EXTENDING THROUGH SAID HOUSING AND OPERATING MEMBER FOR AXIAL LINEAL MOVEMENT AND HAVING AN EXTERIOR, HELICAL, GROOVE, SAID COMPOSITE OPERATING MEMBER HAVING A NUT COMPONENT WITH AN INTERIOR, HELICAL, GROOVE MATING WITH SAID JACK SCREW GROOVE AND A RETURN PASSAGE CONNECTING SPACED PORTIONS OF SAID INTERIOR GROOVE, A PLURALITY OF BEARING ELEMENTS CONFINED IN SAID GROOVES AND PASSAGE AND MOVABLE THEREIN FOR DRIVINGLY CONNECTING SAID NUT COMPONENT AND SAID JACK SCREW, SAID COMPOSITE OPERATING MEMBER HAVING A GEAR COMPONENT WITH AN INTERIOR, ANNULAR, SCREW GUIDING SURFACE FOR GUIDING AND STABILIZING SAID JACK SCREW IN PROPER AXIAL ALIGNMENT WITH RESPECT TO SAID NUT COMPONENT, AND GEAR MEANS DRIVINGLY ENGAGING SAID GEAR COMPONENT TO ROTATE SAID OPERATING MEMBER TO EFFECT LINEAL ACTUATION OF SAID JACK SCREW.
Claim 2
Dependent Claim
151 words
A JACK MECHANISM COMPRISING A SUPPORT HOUSING, A COMPOSITE OPERATING MEMBER MOUNTED FOR ROTATION IN SAID HOUSING AND RETAINED IN A FIXED DISPOSITION THEREIN, A JACK SCREW EXTENDING THROUGH SAID HOUSING AND OPERATING MEMBER FOR AXIAL LINEAL MOVEMENT AND HAVING AN EXTERIOR, HELICAL, GROOVE, SAID COMPOSITE OPERATING MEMBER HAVING A NUT COMPONENT WITH AN INTERIOR, HELICAL, GROOVE MATING WITH SAID JACK SCREW GROOVE AND A RETURN PASSAGE CONNECTING SPACED PORTIONS OF SAID INTERIOR GROOVE, A PLURALITY OF BEARING ELEMENTS CONFINED IN SAID GROOVES AND PASSAGE AND MOVABLE THEREIN FOR DRIVINGLY CONNECTING SAID NUT COMPONENT AND SAID JACK SCREW, SAID COMPOSITE OPERATING MEMBER HAVING A GEAR COMPONENT WITH AN INTERIOR, ANNULAR, SCREW GUIDING SURFACE FOR GUIDING AND STABILIZING SAID JACK SCREW IN PROPER AXIAL ALIGNMENT WITH RESPECT TO SAID NUT COMPONENT, AND GEAR MEANS DRIVINGLY ENGAGING SAID GEAR COMPONENT TO ROTATE SAID OPERATING MEMBER TO EFFECT LINEAL ACTUATION OF SAID JACK SCREW.
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) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |