Patent US3347577A successfully refreshed from Google Patents.
US3347577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pivot construction
Assignee: Allis Chalmers Corp
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Filing: 1964-12-24
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Granted: 1967-10-17
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Expires: 1984-12-24
Abstract
No abstract record available.
Inventors
- 👤 Marvin J Carlson
- 👤 William J Dobeus
- 👤 Norman G Olsen
- 👤 Tibbets E Rolls
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:09
CPC Classifications
E; E02; E02F; E02F9/00; E02F9/08; E02F9/0841; B; B62; B62D; B62D53/00; B62D53/02; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32606; Y10T403/32819; Y10T403/32836; Y10T403/70; Y10T403/7047; Y10T403/7051; Y10T403/7052; Y10T403/7058
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
321 words
A SELF-ALIGNING PIVOT CONNECTING BETWEEN A PAIR OF FRAME MEMBERS, COMPRISING: A PAIR OF SOCKET BUSHINGS ON ONE OF SAID FRAME MEMBERS ALIGNED ON AN AXIS IN VERTICALLY SPACED RELATION TO ONE ANOTHER AND EACH PRESENTING A RADIALLY INWARDLY FACING SPHERICAL BEARING SURFACE, A FIRST PAIR OF WALLS ON THE OTHER OF SAID FRAME MEMBERS WITH FIRST AND SECOND AXIALLY SPACED CYLINDRICAL BORE SURFACES, RESPECTIVELY, ALIGNED ON SAID AXIS AND DISPOSED ON AXIALLY OPPOSITE SIDES OF ONE OF SAID SPHERICAL SOCKET BUSHINGS, A SECOND PAIR OF WALLS ON SAID OTHER FRAME MEMBER WITH THIRD AND FOURTH AXIALLY SPACED CYLINDRICAL BORE SURFACES, RESPECTIVELY, ALIGNED ON SAID AXIS AND DISPOSED ON AXIALLY OPPOSITE SIDES OF THE OTHER OF SAID SPHERICAL SOCKET BUSHINGS, A PAIR OF SPACED BEARING ELEMENTS HAVING CENTRAL CYLINDRICA BORE SURFACES ALIGNED ON SAID AXIS AND RADIALLY OUTWARDLY FACING SPHERICAL BEARING SURFACES COMPLEMENTARY TO AND IN THRUST TRANSMITTING ENGAGEMENT WITH SAID SPHERICAL BEARING SURFACES ON SAID BUSHINGS, RESPECTIVELY, A PAIR OF AXIALLY SPACED AND SUBSTANTIALLY COAXIAL PINS HAVING CYLINDRICAL SHANK PORTIONS IN AXIALLY SLIDABLE AND RADIAL THRUST TRANSMITTING ENGAGEMENT WITH SAID BORE SURFACES OF SAID BEARING ELEMENTS, RESPECTIVELY, ONE OF SAID PINS EXTENDING THROUGH THE OPENINGS DEFINED BY SAID FIRST AND SECOND BORE SURFACES AND THE OTHER OF SAID PINS EXTENDING THROUGH THE OPENINGS DEFINED BY SAID THIRD AND FOURTH BORE SURFACES, MEANS ESTABLISHING RADIAL THRUST TRANSMITTING CONNECTIONS BETWEEN OPPOSITE ENDS OF ONE OF SAID PINS AND SAID FIRST AND SECOND BORE SURFACES, RESPECTIVELY, INCLUDING A SPLIT COLLET HAVING A CYLINDRICAL OUTER SURFACE COMPLEMENTARY TO AND IN RADIAL THRUST TRANSMITTING ENGAGEMENT WITH SAID FIRST BORE SURFACE AND A CONICAL THRUST SURFACE FACING RADIALLY INWARDLY AND AXIALLY OUTWARDLY AWAY FROM SAID BEARING ELEMENT ON SAID ONE PIN, AND THRUST MEANS ON ONE END OF SAID ONE PIN IN RADIAL AND AXIAL THRUST TRANSMITTING RELATION TO SAID COLLET INCLUDING A CONICAL THRUST FACE COMPLEMENTARY TO AND IN ENGAGEMENT WITH SAID CONICAL THRUST SURFACE,
Claim 2
Dependent Claim
321 words
A SELF-ALIGNING PIVOT CONNECTING BETWEEN A PAIR OF FRAME MEMBERS, COMPRISING: A PAIR OF SOCKET BUSHINGS ON ONE OF SAID FRAME MEMBERS ALIGNED ON AN AXIS IN VERTICALLY SPACED RELATION TO ONE ANOTHER AND EACH PRESENTING A RADIALLY INWARDLY FACING SPHERICAL BEARING SURFACE, A FIRST PAIR OF WALLS ON THE OTHER OF SAID FRAME MEMBERS WITH FIRST AND SECOND AXIALLY SPACED CYLINDRICAL BORE SURFACES, RESPECTIVELY, ALIGNED ON SAID AXIS AND DISPOSED ON AXIALLY OPPOSITE SIDES OF ONE OF SAID SPHERICAL SOCKET BUSHINGS, A SECOND PAIR OF WALLS ON SAID OTHER FRAME MEMBER WITH THIRD AND FOURTH AXIALLY SPACED CYLINDRICAL BORE SURFACES, RESPECTIVELY, ALIGNED ON SAID AXIS AND DISPOSED ON AXIALLY OPPOSITE SIDES OF THE OTHER OF SAID SPHERICAL SOCKET BUSHINGS, A PAIR OF SPACED BEARING ELEMENTS HAVING CENTRAL CYLINDRICA BORE SURFACES ALIGNED ON SAID AXIS AND RADIALLY OUTWARDLY FACING SPHERICAL BEARING SURFACES COMPLEMENTARY TO AND IN THRUST TRANSMITTING ENGAGEMENT WITH SAID SPHERICAL BEARING SURFACES ON SAID BUSHINGS, RESPECTIVELY, A PAIR OF AXIALLY SPACED AND SUBSTANTIALLY COAXIAL PINS HAVING CYLINDRICAL SHANK PORTIONS IN AXIALLY SLIDABLE AND RADIAL THRUST TRANSMITTING ENGAGEMENT WITH SAID BORE SURFACES OF SAID BEARING ELEMENTS, RESPECTIVELY, ONE OF SAID PINS EXTENDING THROUGH THE OPENINGS DEFINED BY SAID FIRST AND SECOND BORE SURFACES AND THE OTHER OF SAID PINS EXTENDING THROUGH THE OPENINGS DEFINED BY SAID THIRD AND FOURTH BORE SURFACES, MEANS ESTABLISHING RADIAL THRUST TRANSMITTING CONNECTIONS BETWEEN OPPOSITE ENDS OF ONE OF SAID PINS AND SAID FIRST AND SECOND BORE SURFACES, RESPECTIVELY, INCLUDING A SPLIT COLLET HAVING A CYLINDRICAL OUTER SURFACE COMPLEMENTARY TO AND IN RADIAL THRUST TRANSMITTING ENGAGEMENT WITH SAID FIRST BORE SURFACE AND A CONICAL THRUST SURFACE FACING RADIALLY INWARDLY AND AXIALLY OUTWARDLY AWAY FROM SAID BEARING ELEMENT ON SAID ONE PIN, AND THRUST MEANS ON ONE END OF SAID ONE PIN IN RADIAL AND AXIAL THRUST TRANSMITTING RELATION TO SAID COLLET INCLUDING A CONICAL THRUST FACE COMPLEMENTARY TO AND IN ENGAGEMENT WITH SAID CONICAL THRUST SURFACE,
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |