US3132540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making perforating strips
Assignee: Individual
•
Filing: 1961-11-29
•
Granted: 1964-05-12
•
Expires: 1981-11-29
Abstract
No abstract record available.
Inventors
- 👤 Harry S Boyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:56
CPC Classifications
B; B21; B21D; B21D37/00; B21D37/20; B21D37/205
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A METHOD FOR MAKING PERFORATING STRIPS, COMPRISING ROLLING A METAL FILAMENT INTO THE FORM OF A THIN FLAT STRIP HAVING A MULTIPLICITY OF PROJECTIONS DISPOSED ALONG THE LENGTH OF THE STRIP AND EXTENDING AWAY FROM ONE SIDE OF THE STRIP AND SPACED FROM BOTH SIDE EDGES OF THE STRIP AND BEING TAPERED FROM GREATEST SIZE AT THEIR BASES TO LEAST SIZE AT THEIR ORIGINAL APICES, AND GRINDING AWAY ONE SIDE EDGE OF THE STRIP AND ADJACENT PORTIONS OF THE PROJECTIONS TO LEAVE A GROUND UNIPLANAR SURFACE THAT IS DISPLACED AT AN ACUTE ANGLE TO THE REMAINDER OF THE FLAT STRIP AND THAT EXTENDS FROM THE SIDE OF THE STRIP OPPOSITE THE PROJECTIONS TO NEW APICES OF THE PROJECTIONS WHICH ARE NEARER THE STRIP THAN THE ORIGINAL APICES.
Claim 2
Independent Claim
127 words
A METHOD FOR MAKING PERFORATING STRIPS, COMPRISING ROLLING A METAL FILAMENT INTO THE FORM OF A THIN FLAT STRIP HAVING A MULTIPLICITY OF PROJECTIONS DISPOSED ALONG THE LENGTH OF THE STRIP AND EXTENDING AWAY FROM ONE SIDE OF THE STRIP AND SPACED FROM BOTH SIDE EDGES OF THE STRIP AND BEING TAPERED FROM GREATEST SIZE AT THEIR BASES TO LEAST SIZE AT THEIR ORIGINAL APICES, AND GRINDING AWAY ONE SIDE EDGE OF THE STRIP AND ADJACENT PORTIONS OF THE PROJECTIONS TO LEAVE A GROUND UNIPLANAR SURFACE THAT IS DISPLACED AT AN ACUTE ANGLE TO THE REMAINDER OF THE FLAT STRIP AND THAT EXTENDS FROM THE SIDE OF THE STRIP OPPOSITE THE PROJECTIONS TO NEW APICES OF THE PROJECTIONS WHICH ARE NEARER THE STRIP THAN THE ORIGINAL APICES.
References Cited (Backward Citations)
US92600A
Cited
US2842202A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-12 | 1967-11-11 | 1968-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-12 | 1971-11-11 | 1972-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-12 | 1975-11-11 | 1976-05-12 | $7700.00 | Window Closed / Lapsed |