US3227026A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cut-off punch including rotatable discs
Assignee: Engel Equipment Inc
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Filing: 1964-01-13
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Granted: 1966-01-04
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Expires: 1984-01-13
Abstract
No abstract record available.
Inventors
- 👤 Charles W Werntz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:47
CPC Classifications
B; B23; B23D; B23D23/00; Y; Y10; Y10T; Y10T83/00; Y10T83/929; Y10T83/9411; Y10T83/9423; Y10T83/9425; Y10T83/9428; Y10T83/9432; Y10T83/9447
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
FOR CUTTING LONGITUDINALLY-FORMED SHEET METAL HAVING A FORMED-UP WALL PORTION SUBSTANTIALLY DEEPER IN THE DIRECTION OF THE CUT THAN THE METAL THICKNESS, CUT-OFF APPARATUS, COMPRISING A RECIPROCATIVE PUNCH BLADE HAVING A PUNCH-OUT SURFACE, IN COMBINATION WITH A DIE TO RECEIVE THE SHEET METAL CONTOURED TO PRESENT THE FORMED-UP WALL PORTION TO SAID PUNCH BLADE, SAID DIE HAVING A SLOT THEREIN THROUGH WHICH SAID PUNCH BLADE IS DRIVEN AND SLUGS OF PUNCHED-OUT METAL DISCHARGED, SAID DIE PRESENTING THE WALL PORTION SUCH THAT IT EXTENDS IN THE DIRECTION OF TRAVEL OF SAID PUNCH BLADE, AND CHARACTERIZED BY ROTATABLE MEANS WITHIN SAID PUNCH BLADE INCLUDING A CIRCULARLY ARCUATE PORTION PRESENTED AS A CONTINUATION OF THE PUNCH-OUT SURFACE TO TRAVERSE THE BENT-UP WALL PORTION OF THE SHEET METAL, WHEREBY SAID ROTATABLE MEANS PRESENTS A ROTATABLY CHANGING SURFACE PORTION TO SHEAR THE SHEET METAL WALL PORTION SO TRAVERSED.
Claim 2
Dependent Claim
143 words
FOR CUTTING LONGITUDINALLY-FORMED SHEET METAL HAVING A FORMED-UP WALL PORTION SUBSTANTIALLY DEEPER IN THE DIRECTION OF THE CUT THAN THE METAL THICKNESS, CUT-OFF APPARATUS, COMPRISING A RECIPROCATIVE PUNCH BLADE HAVING A PUNCH-OUT SURFACE, IN COMBINATION WITH A DIE TO RECEIVE THE SHEET METAL CONTOURED TO PRESENT THE FORMED-UP WALL PORTION TO SAID PUNCH BLADE, SAID DIE HAVING A SLOT THEREIN THROUGH WHICH SAID PUNCH BLADE IS DRIVEN AND SLUGS OF PUNCHED-OUT METAL DISCHARGED, SAID DIE PRESENTING THE WALL PORTION SUCH THAT IT EXTENDS IN THE DIRECTION OF TRAVEL OF SAID PUNCH BLADE, AND CHARACTERIZED BY ROTATABLE MEANS WITHIN SAID PUNCH BLADE INCLUDING A CIRCULARLY ARCUATE PORTION PRESENTED AS A CONTINUATION OF THE PUNCH-OUT SURFACE TO TRAVERSE THE BENT-UP WALL PORTION OF THE SHEET METAL, WHEREBY SAID ROTATABLE MEANS PRESENTS A ROTATABLY CHANGING SURFACE PORTION TO SHEAR THE SHEET METAL WALL PORTION SO TRAVERSED.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |