US2743495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a composite cutter
Assignee: National Supply Co
•
Filing: 1951-05-07
•
Granted: 1956-05-01
•
Expires: 1971-05-07
Abstract
No abstract record available.
Inventors
- 👤 Stone E Eklund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:51
CPC Classifications
B; B22; B22D; B22D19/00; B22D19/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
THE METHOD OF MAKING A TOOL HAVING A CEMENTED TUNGSTEN CARBIDE CUTTER, COMPRISING THE STEPS OF: INSERTING AT LEAST THE PORTION OF THE CUTTER TO BE DISPOSED IN A MOLD CAVITY IN A PREFORMED NICKEL JACKET, SAID PORTION BEING ENTIRELY CONVERED BY THE JACKET; MOUNTING THE JACKETED PORTION OF THE CUTTER IN A MOLD CAVITY SO THAT THE JACKETED PORTION ONLY EXTENDS INTO THE MOLD CAVITY; FILLING THE MOLD CAVITY WITH MOLTEN STEEL TO FUSE THE NICKEL JACKET TO BOTH THE CUTTER AND TO THE STEEL; AND COOLING THE MOLTEN STEEL, CUTTER AND JACKET TO UNITE THEM INTEGRALLY.
Claim 2
Independent Claim
98 words
THE METHOD OF MAKING A TOOL HAVING A CEMENTED TUNGSTEN CARBIDE CUTTER, COMPRISING THE STEPS OF: INSERTING AT LEAST THE PORTION OF THE CUTTER TO BE DISPOSED IN A MOLD CAVITY IN A PREFORMED NICKEL JACKET, SAID PORTION BEING ENTIRELY CONVERED BY THE JACKET; MOUNTING THE JACKETED PORTION OF THE CUTTER IN A MOLD CAVITY SO THAT THE JACKETED PORTION ONLY EXTENDS INTO THE MOLD CAVITY; FILLING THE MOLD CAVITY WITH MOLTEN STEEL TO FUSE THE NICKEL JACKET TO BOTH THE CUTTER AND TO THE STEEL; AND COOLING THE MOLTEN STEEL, CUTTER AND JACKET TO UNITE THEM INTEGRALLY.
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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) | 1959-05-01 | 1959-10-31 | 1960-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-01 | 1963-10-31 | 1964-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-01 | 1967-10-31 | 1968-05-01 | $7700.00 | Window Closed / Lapsed |