Method for manufacturing an improved composite gear
Abstract
Abstract THE METHOD OF FABRICATING AN IMPROVED COMPOSITE GEAR WHICH COMPRISES THE STEPS OF ARRANGING AN INNER FERROUS METAL ANNULUS AND AN OUTER BRONZE ANNULUS TO DEFINE A CONCENTRIC ANNULAR SPACE THEREBETWEEN, PLACING A SOLDER MEMBER ADJACENT THE ANNULAR SPACE, HEATING THE ANNULI AND THE SOLDER MEMBER CONCURRENTLY, WHILE MAINTAINING THE RECITED RELATIONSHIP OF THE ANNULI, TO CAUSE MOLTEN METAL FROM THE SOLDER MEMBER TO FLOW INTO AND FILL THE ANNULAR SPACE, AND THEN, WHILE MAINTAINING THE RECITED RELATIONSHIP OF THE ANNULI, COOLING THE ANNULI TO A TEMPERATURE BELOW THE MELTING POINT OF THE SOLDER MEMBER, THEREBY TO JOIN THE ANNULI AND TO IMPROVE THE WEAR CHARACTERISTICS OF THE BRONZE ANNULUS. GEAR TEETH MAY BE MACHINED IN THE EXTERNAL SURFACE OF THE BRONZE ANNULUS EITHER BEFORE OR AFTER THE TWO ANNULI ARE SO JOINED. THE METHOD OF THE PRESENT INVENTION CONTEMPLATES HEATING AND COOLING THE BRONZE ANNULUS IN SUCH A MANNER AS TO IMPROVE ITS WEAR OR DURABILITY CHARACTERISTICS.
Inventors
- 👤 Robert L Wolfe
- 👤 Augustine Trebnik
Bibliographic Details
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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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |