Patent US3268983A successfully refreshed from Google Patents.
US3268983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making low friction spherical bearings
Assignee: Individual
•
Filing: 1964-08-21
•
Granted: 1966-08-30
•
Expires: 1984-08-21
Abstract
No abstract record available.
Inventors
- 👤 Frederick A Straub
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:52
CPC Classifications
B; B21; B21K; B21K1/00; B21K1/06; F; F16; F16C; F16C23/00; F16C23/02; F16C23/04; F16C23/043; F16C23/045; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/10; F16C33/1025; F16C33/106; F16C33/1065; F16C33/20; F16C33/201; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49643; Y10T29/49647; Y10T29/49648; Y10T29/49655; Y10T29/49826; Y10T29/4984; Y10T29/49845; Y10T29/49853; Y10T403/00; Y10T403/32; Y10T403/32606; Y10T403/32631; Y10T403/32737; Y10T403/32778
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
195 words
A METHOD OF MAKING A SELF-ALIGNING, SPHERICAL BEARING OF THE SELF-LUBRICATING TYPE HAVING A CYLINDRICAL OUTER RACE RING, A CENTRAL BALL ELEMENT HAVING A SMOOTH SPHERICAL ZONE SURFACE AND A LINER DISPOSED BETWEEN SAID RING AND BALL ELEMENT, COMPRISING THE STEPS OF: FORMING AT LEAST ONE GENERALLY SPIRAL GROOVE IN THE INNER SURFACE OF THE CYLINDRICAL RACE RING; POSITIONING THE LINER WITHIN SAID RACE RING; POSITIONING SAID RACE RING AND SAID LINER AROUND THE CENTRAL BALL ELEMENT; AND PRESS-FORMING SAID RING AND LINER AROUND SAID CENTRAL ELEMENT BY THE APPLICATION OF FORCES DIRECTED TOWARD THE CENTER OF SAID BALL ELEMENT TO PERMANENTLY DEFORM SAID RING AROUND SAID BALL ELEMENT AND LINER, TO CAUSE PORTIONS OF SAID INER TO ENTER SAID GENERALLY SPIRAL GROOVE, TO CAUSE THE WIDTH OF SAID GROOVE TO BECOME NARROWER DUE TO THE DEFORMATION OF THE RING TO LOCK SAID LINER BY SAID PORTIONS TO SAID RACE RING BETWEEN SAID RACE RACE RING AND BALL ELEMENT TO PREVENT SHIFTING OF SAID LINER RELATIVE TO SAID RACE RING UPON ROTATION OF SAID BALL ELEMENT AND TO PLACE SAID LINER INNER SURFACE IN ROTATIONAL BEARING RELATION WITH THE SPHERICAL SURFACE OF SAID BALL ELEMENT.
Claim 2
Independent Claim
195 words
A METHOD OF MAKING A SELF-ALIGNING, SPHERICAL BEARING OF THE SELF-LUBRICATING TYPE HAVING A CYLINDRICAL OUTER RACE RING, A CENTRAL BALL ELEMENT HAVING A SMOOTH SPHERICAL ZONE SURFACE AND A LINER DISPOSED BETWEEN SAID RING AND BALL ELEMENT, COMPRISING THE STEPS OF: FORMING AT LEAST ONE GENERALLY SPIRAL GROOVE IN THE INNER SURFACE OF THE CYLINDRICAL RACE RING; POSITIONING THE LINER WITHIN SAID RACE RING; POSITIONING SAID RACE RING AND SAID LINER AROUND THE CENTRAL BALL ELEMENT; AND PRESS-FORMING SAID RING AND LINER AROUND SAID CENTRAL ELEMENT BY THE APPLICATION OF FORCES DIRECTED TOWARD THE CENTER OF SAID BALL ELEMENT TO PERMANENTLY DEFORM SAID RING AROUND SAID BALL ELEMENT AND LINER, TO CAUSE PORTIONS OF SAID INER TO ENTER SAID GENERALLY SPIRAL GROOVE, TO CAUSE THE WIDTH OF SAID GROOVE TO BECOME NARROWER DUE TO THE DEFORMATION OF THE RING TO LOCK SAID LINER BY SAID PORTIONS TO SAID RACE RING BETWEEN SAID RACE RACE RING AND BALL ELEMENT TO PREVENT SHIFTING OF SAID LINER RELATIVE TO SAID RACE RING UPON ROTATION OF SAID BALL ELEMENT AND TO PLACE SAID LINER INNER SURFACE IN ROTATIONAL BEARING RELATION WITH THE SPHERICAL SURFACE OF SAID BALL ELEMENT.
References Cited (Backward Citations)
US3126613A
Cited
US2689380A
Cited
US2691814A
Cited
US2804679A
Cited
US2995462A
Cited
US2904874A
Cited
US2958927A
Cited
US3085312A
Cited
US3063133A
Cited
US3191265A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |