US3097684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming a closed corner in a hollow rectilinear metal workpiece
Assignee: LE TARTE CO Inc
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Filing: 1960-01-14
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Granted: 1963-07-16
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Expires: 1980-01-14
Abstract
No abstract record available.
Inventors
- 👤 Tarte Frank Le
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:22
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/96; B; B21; B21D; B21D53/00; B21D53/74; Y; Y10; Y10S; Y10S83/00; Y10S83/917; Y10T; Y10T83/00; Y10T83/04; Y10T83/0596; Y10T83/869; Y10T83/8773
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
THE METHOD OF FORMING A CLOSED CORNER FROM A HOLLOW RECTILINEAR METAL WORKPIECE INCLUDING THE STEPS OF SELECTING AN ELONGATED WORKPIECE HAVING A CLOSED SHAPED HOLLOW CROSS SECTION STRUCTURE WHICH HAS AT LEAST TWO SIDES EXTENDING ANGULARLY TO EACH OTER, SUPPORTING THE WORKPIECE ON A BED, RELATIVELY POSITIONING THE WORKPIECE AND A PAIR OF ANGULARLY DISPOSED CIRCULAR SAWS FOR CUTTING ENGAGEMENT BY BOTH SAWS ALL BUT ONE OF SAID SIDES WITHOUT DEFORMING THE CROSS SECTION OF THE WORKPIECE AND SO THAT THE APEX OF THE RESULTING NOTCH IS IN A POSITION TO PERMIT THE WORKPIECE TO BEND ABOUT SAID ONE SIDE TO FORM A CLOSED CORNER, ROTATING SAID SAWS, SIMULTANEOUSLY MOVING THE SAWS THROUGH RELATIVELY ANGULARLY DISPOSED PLANES OF ROTATION OF THE RESPCTIVE SAWS, WHEREIN THE PATHE OF ONE OF THE SAWS OVERLAPS THAT OF THE OTHER SAW AND THE PERIPHERY OF THE OVERLAPPING SAW IS TANGENT TO THE PLANE OF THE OUTER SURFACE OF SAID OVERLAPPED SAW WHEN SAID SAWS PASS THROUGH SAID WORKPIECE, WHEREIN THE KERF OF THE RESULTING CUT OF THE OVERLAPPING SAW LIES IN
Claim 2
Independent Claim
178 words
THE METHOD OF FORMING A CLOSED CORNER FROM A HOLLOW RECTILINEAR METAL WORKPIECE INCLUDING THE STEPS OF SELECTING AN ELONGATED WORKPIECE HAVING A CLOSED SHAPED HOLLOW CROSS SECTION STRUCTURE WHICH HAS AT LEAST TWO SIDES EXTENDING ANGULARLY TO EACH OTER, SUPPORTING THE WORKPIECE ON A BED, RELATIVELY POSITIONING THE WORKPIECE AND A PAIR OF ANGULARLY DISPOSED CIRCULAR SAWS FOR CUTTING ENGAGEMENT BY BOTH SAWS ALL BUT ONE OF SAID SIDES WITHOUT DEFORMING THE CROSS SECTION OF THE WORKPIECE AND SO THAT THE APEX OF THE RESULTING NOTCH IS IN A POSITION TO PERMIT THE WORKPIECE TO BEND ABOUT SAID ONE SIDE TO FORM A CLOSED CORNER, ROTATING SAID SAWS, SIMULTANEOUSLY MOVING THE SAWS THROUGH RELATIVELY ANGULARLY DISPOSED PLANES OF ROTATION OF THE RESPCTIVE SAWS, WHEREIN THE PATHE OF ONE OF THE SAWS OVERLAPS THAT OF THE OTHER SAW AND THE PERIPHERY OF THE OVERLAPPING SAW IS TANGENT TO THE PLANE OF THE OUTER SURFACE OF SAID OVERLAPPED SAW WHEN SAID SAWS PASS THROUGH SAID WORKPIECE, WHEREIN THE KERF OF THE RESULTING CUT OF THE OVERLAPPING SAW LIES IN
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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) | 1966-07-15 | 1967-01-14 | 1967-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-15 | 1971-01-14 | 1971-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-15 | 1975-01-14 | 1975-07-16 | $7700.00 | Window Closed / Lapsed |