Patent US3121944A successfully refreshed from Google Patents.
US3121944A
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US
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Method of crimping
Assignee: AT&T Inc
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Filing: 1961-07-20
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Granted: 1964-02-25
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Expires: 1981-07-20
Abstract
No abstract record available.
Inventors
- 👤 Norbert B Karau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:24
CPC Classifications
B; B21; B21D; B21D22/00; B21D22/10; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/49925; Y10T29/49934
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
THE METHOD OF CRIMPING AN APERTURE-DEFINING, INTERIOR, PERIPHERAL EDGE PORTION OF A METAL SHEET ABOUT THE EDGE OF A DISC, THE DISC BEING SUBSTANTIALLY LARGER IN DIAMETER THAN THE APERTURE IN THE SHEET, WHICH METHOD COMPRISES SUPPORTING THE DISC AND THE SHEET AWAY FROM A BASE WITH THE APERTURE OF THE SHEET CONCENTRIC WITH THE DISC, PRESSING A RESILIENT BLOCK AGAINST THE SHEET AND THE DISC TO FORCE A PORTION OF THE SHEET AGAINST THE BASE WITH THE INNERMOST EDGE PORTION OF THE SHEET PRESSED AGAINST ONE SIDE OF THE DISC AND WITH AN INTERMEDIATE PORTION OF THE SHEET EXTENDING FROM THE EDGE OF THE DISC TO THE BASE AND
Claim 2
Independent Claim
110 words
THE METHOD OF CRIMPING AN APERTURE-DEFINING, INTERIOR, PERIPHERAL EDGE PORTION OF A METAL SHEET ABOUT THE EDGE OF A DISC, THE DISC BEING SUBSTANTIALLY LARGER IN DIAMETER THAN THE APERTURE IN THE SHEET, WHICH METHOD COMPRISES SUPPORTING THE DISC AND THE SHEET AWAY FROM A BASE WITH THE APERTURE OF THE SHEET CONCENTRIC WITH THE DISC, PRESSING A RESILIENT BLOCK AGAINST THE SHEET AND THE DISC TO FORCE A PORTION OF THE SHEET AGAINST THE BASE WITH THE INNERMOST EDGE PORTION OF THE SHEET PRESSED AGAINST ONE SIDE OF THE DISC AND WITH AN INTERMEDIATE PORTION OF THE SHEET EXTENDING FROM THE EDGE OF THE DISC TO THE BASE AND
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) | 1967-02-24 | 1967-08-26 | 1968-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-24 | 1971-08-26 | 1972-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-24 | 1975-08-26 | 1976-02-25 | $7700.00 | Window Closed / Lapsed |