US3204265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for forming fasteners with rectangular shanks
Assignee: DURATILE OF OHIO Inc
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Filing: 1962-01-24
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Granted: 1965-09-07
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Expires: 1982-01-24
Abstract
No abstract record available.
Inventors
- 👤 Edmund J Fiekers
- 👤 Elmer H Schramm
- 👤 Albert A Klose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:35
CPC Classifications
B; B21; B21K; B21K27/00; B21K27/02; B21G; B21G3/00; B21G3/005; B21G3/18; B21K1/00; B21K1/56; B21K27/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
APPARATUS FOR PRODUCING FASTENERS WITH RECTANGULAR SHANKS, WHICH APPARATUS COMPRISES A DIE BLOCK HAVING A PASSAGE THEREIN, THE LATERAL SHAPE OF WHICH IS SUBSTANTIALLY SIMILAR TO THE PROFILE OF THE FASTENER TO BE PRODUCED, A SHEAR BLOCK LOCATED ADJACENT ONE END OF SAID DIE BLOCK, SAID SHEAR BLOCK HAVING A RECESS WHICH IS OPPOSITE TO AND OF SUBSTANTIALLY THE SAME SIZE AND SHAPE AS ONE-HALF OF THE PASSAGE, AT LEAST THE RECESS AND THE HALF OF SAID PASSAGE OPPOSITE SAID RECESS OF SAID SHEAR BLOCK HAVING RIDGES EXTENDING LONGITUDINALLY THEREOF AND SUBSTANTIALLY PARALLEL TO ONE ANOTHER FOR SHAPING SERRATIONS ON OPPOSITE SIDES OF THE FASTENER, MEANS FOR FEEDING A STRIP IN INCREMENTS THROUGH SAID PASSAGE FROM THE END THEREOF OPPOSITE THE SHEAR BLOCK, EACH INCREMENT BEING OF A MAGNITUDE SUBSTANTIALLY EQUAL TO THE DESIRED THICKNESS OF THE FASTENER AND MEANS FOR MOVING SAID SHEAR BLOCK ACROSS THE ADJACENT END OF THE PASSAGE EACH TIME THE STRIP HAS BEEN MOVED THE DESIRED INCREMENT BY SAID FEED MEANS.
Claim 2
Dependent Claim
166 words
APPARATUS FOR PRODUCING FASTENERS WITH RECTANGULAR SHANKS, WHICH APPARATUS COMPRISES A DIE BLOCK HAVING A PASSAGE THEREIN, THE LATERAL SHAPE OF WHICH IS SUBSTANTIALLY SIMILAR TO THE PROFILE OF THE FASTENER TO BE PRODUCED, A SHEAR BLOCK LOCATED ADJACENT ONE END OF SAID DIE BLOCK, SAID SHEAR BLOCK HAVING A RECESS WHICH IS OPPOSITE TO AND OF SUBSTANTIALLY THE SAME SIZE AND SHAPE AS ONE-HALF OF THE PASSAGE, AT LEAST THE RECESS AND THE HALF OF SAID PASSAGE OPPOSITE SAID RECESS OF SAID SHEAR BLOCK HAVING RIDGES EXTENDING LONGITUDINALLY THEREOF AND SUBSTANTIALLY PARALLEL TO ONE ANOTHER FOR SHAPING SERRATIONS ON OPPOSITE SIDES OF THE FASTENER, MEANS FOR FEEDING A STRIP IN INCREMENTS THROUGH SAID PASSAGE FROM THE END THEREOF OPPOSITE THE SHEAR BLOCK, EACH INCREMENT BEING OF A MAGNITUDE SUBSTANTIALLY EQUAL TO THE DESIRED THICKNESS OF THE FASTENER AND MEANS FOR MOVING SAID SHEAR BLOCK ACROSS THE ADJACENT END OF THE PASSAGE EACH TIME THE STRIP HAS BEEN MOVED THE DESIRED INCREMENT BY SAID FEED MEANS.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |