Patent FR802983A successfully refreshed from Google Patents.
Patent US3439640A successfully refreshed from Google Patents.
US3439640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container opening devices
Assignee: Individual
•
Filing: 1966-04-15
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Granted: 1969-04-22
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Expires: 1986-04-15
Abstract
No abstract record available.
Inventors
- 👤 Ermal C Fraze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:29
CPC Classifications
B; B65; B65D; B65D17/00; B65D17/28; B65D17/401; B65D17/4012; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/49938; Y10T29/49943
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
174 words
IN THE METHOD OF FABRICATING A CONTAINER WHEREIN A METAL WALL OF THE CONTAINER IS SCORED ALONG A LINE TO FORM A TEAR STRIP AND A HOLLOW RIVET IS FORMED IN THE TEAR STRIP AND EXTENDED THROUGH A PORTION OF THE TAB AND THE HOLLOW RIVET IS THEN HEADED INTO OVERLAPPING ENGAGEMENT WITH THE TAB FOR USE OF THE TAB AS A LEVER TO INITIATE SEVERANCE OF THE TEAR AT A PARTICULAR REGION NEAR ONE END OF THE TEAR STRIP, THE IMPROVEMENT COMPRISING: SHAPING THE HOLLOW RIVET TO AN ELONGATED CONFIGURATION WITH ITS LONGITUDINAL AXES EXTENDING TOWARDS THE PARTICULAR REGION; AND CONFINING THE LONGITUDINAL SIDES OF THE HOLLOW RIVET DUR ING THE HEADING OPERATION TO LIMIT SPREADING OF THE METAL LATERALLY OF THE LONGITUDINAL CONFIGURATION AND THEREBY DIVERT THE METAL OF THE RIVET LONGITUDINALLY OF THE ELONGATED CONFIGURATION TOWARDS THE PARTICULAR REGION FOR LOCAL REINFORCEMENT OF THE JOINT BETWEEN THE TAB AND THE TEAR STRIP WHERE MAXIMUM STRESSING OF THE JOINT BETWEEN THE TEAR STRIP AND THE TAB IS CREATED BY THE LEVER ACTION.
Claim 2
Dependent Claim
174 words
IN THE METHOD OF FABRICATING A CONTAINER WHEREIN A METAL WALL OF THE CONTAINER IS SCORED ALONG A LINE TO FORM A TEAR STRIP AND A HOLLOW RIVET IS FORMED IN THE TEAR STRIP AND EXTENDED THROUGH A PORTION OF THE TAB AND THE HOLLOW RIVET IS THEN HEADED INTO OVERLAPPING ENGAGEMENT WITH THE TAB FOR USE OF THE TAB AS A LEVER TO INITIATE SEVERANCE OF THE TEAR AT A PARTICULAR REGION NEAR ONE END OF THE TEAR STRIP, THE IMPROVEMENT COMPRISING: SHAPING THE HOLLOW RIVET TO AN ELONGATED CONFIGURATION WITH ITS LONGITUDINAL AXES EXTENDING TOWARDS THE PARTICULAR REGION; AND CONFINING THE LONGITUDINAL SIDES OF THE HOLLOW RIVET DUR ING THE HEADING OPERATION TO LIMIT SPREADING OF THE METAL LATERALLY OF THE LONGITUDINAL CONFIGURATION AND THEREBY DIVERT THE METAL OF THE RIVET LONGITUDINALLY OF THE ELONGATED CONFIGURATION TOWARDS THE PARTICULAR REGION FOR LOCAL REINFORCEMENT OF THE JOINT BETWEEN THE TAB AND THE TEAR STRIP WHERE MAXIMUM STRESSING OF THE JOINT BETWEEN THE TEAR STRIP AND THE TAB IS CREATED BY THE LEVER ACTION.
References Cited (Backward Citations)
US2992857A
Cited
US3334777A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-21 | 1972-10-21 | 1973-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-21 | 1976-10-21 | 1977-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-21 | 1980-10-21 | 1981-04-22 | $7700.00 | Window Closed / Lapsed |