Method of making spherical bearings
Abstract
Abstract THE INVENTION HEREIN DESCRIBED CONSTITUTES AN IMPROVEMENT IN A METHOD OF THE TYPE USED FOR THE MANUFACTURE OF SPHERICAL BEARINGS AND WHEREIN AN ASSEMBLY OF AN INNER SPHERICAL BALL ELEMENT SURROUNDED BY A CYLINDRICAL RACE MEMBER IS FORCED BY A RAM THROUGH THE TAPERED BORE OF A SWAGING DIE TO THEREBY SWAG THE RACE MEMBER RADIALLY INWARDLY INTO CONFORMITY WITH THE SPHERICAL SURFACE OF THE INNER BALL MEMBER. IN ACCORDANCE WITH THE INVENTION THERE IS POSITIONED AGAINST THE END OF THE RAM AN ANNULUS OF MELLEABLE MATERIAL WHICH SERVES AS A SPACER BETWEEN THE END OF THE RAM AND THAT PORTION OF THE RACE MEMBER WHICH IS SWAGED RADIALLY INWARDLY INTO CONFORMITY WITH THE INNER BALL MEMBER. THIS INHIBITS RAM WEAR BY ELIMINATING THE GALLING AND METAL FATIGUE INDUCED BY CONTACT BETWEEN THE RAM AND THAT PORTION OF THE RACE BEING SWAGED RADIALLY INWARDLY.
Inventors
- 👤 William A Kuhn
Bibliographic Details
Claims Analysis
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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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |