Patent US3124876A successfully refreshed from Google Patents.
US3124876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming cupped articles
Assignee: —
•
Filing: —
•
Granted: 1964-03-17
•
Expires: 1981-03-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:39
CPC Classifications
B; B21; B21K; B21K1/00; B21K1/76
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
187 words
THE METHOD OF FORMING A CUPPED METAL ARTICLE WITH A CENTRAL OPENING THERETHROUGH COMPRISING CUTTING A WORKPIECE FROM A LENGTH OF SOLID BAR STOCK, CONFINING THE WORKPIECE IN THE OPENING IN A SUITABLE DIE AND APPLYING PRESSURE TO BOTH FACES THEREOF TO FORM IT INTO GENERALLY CYLINDRICAL SHAPE WITH A TAPERED PORTION AT THE DIE END OF THE WORKPIECE, TURNING THE WORKPIECE END FOR END AND CONFINING IT IN ANOTHER DIE OPENING IN THE SAME MACHINE TO ENLARGE ITS DIAMETER, FORM A CHAMFER ADJACENT ONE END AND INDENTING BOTH FACES OF THE WORKPIECE, THEN GUIDING THE WORKPIECE INTO A THIRD DIE OPENING BY THE INDENTATION SO MADE AND THERE FLATTENING THE WORKPIECE TO FURTHER ENLARGE ITS DIAMETER AND FORM A SHOULDER THEREON, AND TAPERING THE METAL OF THE WORKPIECE INWARDLY IN BOTH DIRECTIONS FROM SAID ENLARGED PORTION WHILE INDENTING ONE FACE THEREOF, THEN DRIVING A PUNCH INTO SAID INTENDED FACE TO A POINT BEYOND SAID SHOULDER TO DEEPLY INDENT THE PUNCH FACE OF THE WORKPIECE AND FORM A CUP-SHAPED ARTICLE AND PIERCING AN OPENING THROUGH THE WALL OF THE WORKPIECE AT THE BOTTOM OF SAID DEEP INDENTATION.
Claim 2
Independent Claim
187 words
THE METHOD OF FORMING A CUPPED METAL ARTICLE WITH A CENTRAL OPENING THERETHROUGH COMPRISING CUTTING A WORKPIECE FROM A LENGTH OF SOLID BAR STOCK, CONFINING THE WORKPIECE IN THE OPENING IN A SUITABLE DIE AND APPLYING PRESSURE TO BOTH FACES THEREOF TO FORM IT INTO GENERALLY CYLINDRICAL SHAPE WITH A TAPERED PORTION AT THE DIE END OF THE WORKPIECE, TURNING THE WORKPIECE END FOR END AND CONFINING IT IN ANOTHER DIE OPENING IN THE SAME MACHINE TO ENLARGE ITS DIAMETER, FORM A CHAMFER ADJACENT ONE END AND INDENTING BOTH FACES OF THE WORKPIECE, THEN GUIDING THE WORKPIECE INTO A THIRD DIE OPENING BY THE INDENTATION SO MADE AND THERE FLATTENING THE WORKPIECE TO FURTHER ENLARGE ITS DIAMETER AND FORM A SHOULDER THEREON, AND TAPERING THE METAL OF THE WORKPIECE INWARDLY IN BOTH DIRECTIONS FROM SAID ENLARGED PORTION WHILE INDENTING ONE FACE THEREOF, THEN DRIVING A PUNCH INTO SAID INTENDED FACE TO A POINT BEYOND SAID SHOULDER TO DEEPLY INDENT THE PUNCH FACE OF THE WORKPIECE AND FORM A CUP-SHAPED ARTICLE AND PIERCING AN OPENING THROUGH THE WALL OF THE WORKPIECE AT THE BOTTOM OF SAID DEEP INDENTATION.
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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) | 1967-03-17 | 1967-09-16 | 1968-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-17 | 1971-09-16 | 1972-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-17 | 1975-09-16 | 1976-03-17 | $7700.00 | Window Closed / Lapsed |