Patent US3192069A successfully refreshed from Google Patents.
US3147658A
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Apparatus for perforating sheets
Assignee: Individual
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Filing: 1961-11-29
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Granted: 1964-09-08
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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 12:28
CPC Classifications
B; B26; B26F; B26F1/00; B26F1/24; Y; Y10; Y10T; Y10T83/00; Y10T83/465; Y10T83/4766; Y10T83/4795; Y10T83/483; Y10T83/4838; Y10T83/4841; Y10T83/929; Y10T83/9309; Y10T83/9312; Y10T83/9314; Y10T83/9372; Y10T83/9408
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
APPARATUS FOR PERFORATING SHEETS, COMPRISING A CYLINDER ROTATABLE ABOUT ITS AXIS, A PLATEN HAVING AN ELASTIC DEFORMABLE SURFACE AGAINST WHICH THE CYLINDER BEARS, AND AN ELONGATED PERFORATING STRIP SECURED ABOUT AT LEAST A PORTION OF THE PERIPHERY OF THE CYLINDER, THE STRIP COMPRISING A THIN FLAT BASE PORTION AND A MULTIPLICITY OF TEETH UPSTANDING FROM THE BASE PORTION AND EXTENDING LENGTHWISE OF THE STRIP AND PRESSING AGAINST AND ELASTICALLY DEFORMING SAID PLATEN SURFACE, THE TEETH BEING POINTED AND THE POINTS BEING SPACED APART AND DISPOSED IN A CIRCULAR LINE PARALLEL TO THE LENGTH OF THE STRIP, SAID CIRCULAR LINE LYING IN A PLANE PERPENDICULAR TO THE AXIS OF THE CYLINDER, ALL OF THE SIDES OF THE TEETH BEING SO DISPOSED THAT SUBSTANTIALLY ALL LINES NORMAL TO THE SIDES ARE DISPOSED AT SUBSTANTIAL ANGLES TO SAID PLANE.
Claim 2
Dependent Claim
136 words
APPARATUS FOR PERFORATING SHEETS, COMPRISING A CYLINDER ROTATABLE ABOUT ITS AXIS, A PLATEN HAVING AN ELASTIC DEFORMABLE SURFACE AGAINST WHICH THE CYLINDER BEARS, AND AN ELONGATED PERFORATING STRIP SECURED ABOUT AT LEAST A PORTION OF THE PERIPHERY OF THE CYLINDER, THE STRIP COMPRISING A THIN FLAT BASE PORTION AND A MULTIPLICITY OF TEETH UPSTANDING FROM THE BASE PORTION AND EXTENDING LENGTHWISE OF THE STRIP AND PRESSING AGAINST AND ELASTICALLY DEFORMING SAID PLATEN SURFACE, THE TEETH BEING POINTED AND THE POINTS BEING SPACED APART AND DISPOSED IN A CIRCULAR LINE PARALLEL TO THE LENGTH OF THE STRIP, SAID CIRCULAR LINE LYING IN A PLANE PERPENDICULAR TO THE AXIS OF THE CYLINDER, ALL OF THE SIDES OF THE TEETH BEING SO DISPOSED THAT SUBSTANTIALLY ALL LINES NORMAL TO THE SIDES ARE DISPOSED AT SUBSTANTIAL ANGLES TO SAID PLANE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |