Patent US3263474A successfully refreshed from Google Patents.
US3263474A
Expired / Lapsed
US
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Method and apparatus for forming splines
Assignee: Ford Motor Co
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Filing: 1962-12-14
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Granted: 1966-08-02
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Expires: 1982-12-14
Abstract
No abstract record available.
Inventors
- 👤 Alex M Pentland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:27
CPC Classifications
B; B21; B21K; B21K1/00; B21K1/28; B21K1/30; B21K1/305; B21J; B21J5/00; B21J5/06; B21J5/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
THE PROCESS OF FORMING AN INTERNAL SPLINE IN A HOLLOW DEFORMABLE BLANK COMPRISING BRINGING THE INTERNAL DIAMETER OF THE HOLLOW BLANK TO THE REQUIRED FINAL INTERIOR DIAMETER, INSERTING A DIE INTO THE HOLLOWED PORTION OF SAID BLANK WITHOUT ALTERING THE INTERIOR DIAMETER, SAID DIE HAVING A CONFIGURATION CONFORMING TO THE DESIRED INTERNAL SPLINE AND A DIAMETER ESSENTIALLY THE SAME AS THE INTERIOR DIAMETER OF THE HOLLOW BLANK, AND CAUSING A PRESSURE TO BE EXERTED ONTHE EXTERIOR OF SAID BLANK OVER AN AREA GRERATER IN WIDTH THAN THE WIDTH OF THE SPLINE TO BE FORMED, SAID PRESSURE BEING OF SUCH MAGNITUDE THAT THE BLANK IS EXTRUDED INTO THE DIE AND THE INTERNAL SPLINE IS GIVEN ITS FINAL SHAPE IN A SINGLE EXTRUSION STEP, THE FORMATION OF THE SPLINE TAKING PLACE WHILE THE BLANK IS STATIONARY.
Claim 2
Dependent Claim
134 words
THE PROCESS OF FORMING AN INTERNAL SPLINE IN A HOLLOW DEFORMABLE BLANK COMPRISING BRINGING THE INTERNAL DIAMETER OF THE HOLLOW BLANK TO THE REQUIRED FINAL INTERIOR DIAMETER, INSERTING A DIE INTO THE HOLLOWED PORTION OF SAID BLANK WITHOUT ALTERING THE INTERIOR DIAMETER, SAID DIE HAVING A CONFIGURATION CONFORMING TO THE DESIRED INTERNAL SPLINE AND A DIAMETER ESSENTIALLY THE SAME AS THE INTERIOR DIAMETER OF THE HOLLOW BLANK, AND CAUSING A PRESSURE TO BE EXERTED ONTHE EXTERIOR OF SAID BLANK OVER AN AREA GRERATER IN WIDTH THAN THE WIDTH OF THE SPLINE TO BE FORMED, SAID PRESSURE BEING OF SUCH MAGNITUDE THAT THE BLANK IS EXTRUDED INTO THE DIE AND THE INTERNAL SPLINE IS GIVEN ITS FINAL SHAPE IN A SINGLE EXTRUSION STEP, THE FORMATION OF THE SPLINE TAKING PLACE WHILE THE BLANK IS STATIONARY.
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) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |