US3417457A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welding method and apparatus
Assignee: Caterpillar Inc
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Filing: 1962-08-30
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Granted: 1968-12-24
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Expires: 1982-08-30
Abstract
No abstract record available.
Inventors
- 👤 Clarence J Burke
- 👤 Kenneth J Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:03
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/12; B23K20/121
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
THE METHOD OF WELDING PARTS TOGETHER WHICH COMPRISES THE STEPS OF: PRODUCING RELATIVE ROTATION OF SAID PARTS BY DRIVING AT LEAST ONE PART IN ROTATION; EFFECTING RELATIVE AXIAL MOVEMENT OF SAID PARTS INTO FORGING IMPACT DURING RELATIVE ROTATION THEREOF TO HEAT THE ABUTTING INTERFACES OF THE PARTS TO WELDING TEMPERATURE BY DISSIPATION OF THE FORGING IMPACT AND FRICTIONAL ENERGIES AT SAID INTERFACES, AND CREATING FORCED CONTACT OF SAID INTERFACES WHILE AT SAID TEMPERATURE TO CAUSE WELDING DIFFUSION TO OCCUR AT SAID INTERFACES; AND TERMINATING RELATIVE ROTATION OF SAID PARTS AFTER HEATING OF SAID INTERFACES TO SAID TEMPERATURE.
Claim 2
Independent Claim
97 words
THE METHOD OF WELDING PARTS TOGETHER WHICH COMPRISES THE STEPS OF: PRODUCING RELATIVE ROTATION OF SAID PARTS BY DRIVING AT LEAST ONE PART IN ROTATION; EFFECTING RELATIVE AXIAL MOVEMENT OF SAID PARTS INTO FORGING IMPACT DURING RELATIVE ROTATION THEREOF TO HEAT THE ABUTTING INTERFACES OF THE PARTS TO WELDING TEMPERATURE BY DISSIPATION OF THE FORGING IMPACT AND FRICTIONAL ENERGIES AT SAID INTERFACES, AND CREATING FORCED CONTACT OF SAID INTERFACES WHILE AT SAID TEMPERATURE TO CAUSE WELDING DIFFUSION TO OCCUR AT SAID INTERFACES; AND TERMINATING RELATIVE ROTATION OF SAID PARTS AFTER HEATING OF SAID INTERFACES TO SAID TEMPERATURE.
References Cited (Backward Citations)
US1352646A
Cited
GB572789A
Cited
US3134278A
Cited
FR1265578A
Cited
US3120138A
Cited
US3273233A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-24 | 1972-06-24 | 1972-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-24 | 1976-06-24 | 1976-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-24 | 1980-06-24 | 1980-12-24 | $7700.00 | Window Closed / Lapsed |