US3228228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube end forming device
Assignee: NAT COPPER DEV Co
•
Filing: 1962-12-03
•
Granted: 1966-01-11
•
Expires: 1982-12-03
Abstract
No abstract record available.
Inventors
- 👤 Robert J Myotte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:05
CPC Classifications
B; B21; B21D; B21D41/00; B21D41/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
AN APPARATUS FOR FORMING A TUBULAR WORKPIECE COMPRISING, A DIE BLOCK HAVING AN ELONGATED TROUGH, A PAIR OF SIDE DIE MEMBERS POSITIONED WITHIN AND EXTENDING THROUGHOUT THE LENGTH OF SAID TROUGH, SAID SIDE DIE MEMBERS BEING VERTICALLY SHIFTABLE WITHIN SAID DIE BLOCK TROUGH, EACH OF SAID MEMBERS BEING PROVIDED WITH INCLINED AND VERTICAL SURFACES ARRANGED IN SPACED RELATION TO FORM A Y-SHAPED CAVITY BETWEEN THE LENGTHS OF SAID MEMBERS, AND SAID VERTICAL SURFACES BEING SPACED APART LESS THAN THE DIAMETER OF SAID WORKPIECE, A FIRST DIE POSITIONED BETWEEN A PORTION OF THE VERTICAL SURFACES OF SAID MEMBERS, AND A SECOND DIE ARRANGED TO PRESS SAID TUBULAR WORKPIECE FROM A CRADLED POSITION BETWEEN THE INCLINED SURFACES OF SAID MEMBERS INTO THE SPACE BETWEEN SAID VERTICAL SURFACES AND SUBSEQUENTLY AGAINST SAID FIRST DIE.
Claim 2
Independent Claim
131 words
AN APPARATUS FOR FORMING A TUBULAR WORKPIECE COMPRISING, A DIE BLOCK HAVING AN ELONGATED TROUGH, A PAIR OF SIDE DIE MEMBERS POSITIONED WITHIN AND EXTENDING THROUGHOUT THE LENGTH OF SAID TROUGH, SAID SIDE DIE MEMBERS BEING VERTICALLY SHIFTABLE WITHIN SAID DIE BLOCK TROUGH, EACH OF SAID MEMBERS BEING PROVIDED WITH INCLINED AND VERTICAL SURFACES ARRANGED IN SPACED RELATION TO FORM A Y-SHAPED CAVITY BETWEEN THE LENGTHS OF SAID MEMBERS, AND SAID VERTICAL SURFACES BEING SPACED APART LESS THAN THE DIAMETER OF SAID WORKPIECE, A FIRST DIE POSITIONED BETWEEN A PORTION OF THE VERTICAL SURFACES OF SAID MEMBERS, AND A SECOND DIE ARRANGED TO PRESS SAID TUBULAR WORKPIECE FROM A CRADLED POSITION BETWEEN THE INCLINED SURFACES OF SAID MEMBERS INTO THE SPACE BETWEEN SAID VERTICAL SURFACES AND SUBSEQUENTLY AGAINST SAID FIRST DIE.
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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) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |