US3366086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fabricating a sheet metal joint
Assignee: Individual
•
Filing: 1965-06-18
•
Granted: 1968-01-30
•
Expires: 1985-06-18
Abstract
No abstract record available.
Inventors
- 👤 Ermal C Fraze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:17
CPC Classifications
B; B21; B21D; B21D51/00; B21D51/16; B21D51/38; B21D51/383
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
A METHOD OF FABRICATING CAN TOPS HAVING TEAR STRIPS WITH TABS ATTACHED THERETO FOR MANUAL REMOVAL OF THE TEAR STRIPS, CHARACTERIZED BY THE STEPS OF: ADVANCING A SHEET OF DEFORMABLE MATERIAL STEP BY STEP THROUGH A SERIES OF WORK STATIONS INCLUDING A SUCCESSION OF FORMING STATIONS AND A FINAL SHEARING STATION; FORMING CAN TOPS IN SAID SHEET AT ONE OF SAID FORMING STATIONS WITHOUT SEVERING THE CAN TOPS FROM THE SHEET; FORMING DIMPLES IN THE CAN TOPS AT ONE OF SAID FORMING STATIONS; AT A SUBSEQUENT FORMING STATION FORCIBLY CONVERTING THE DIMPLES INTO HOLLOW RIVETS WITH TRANSVERSE END WALLS OF LESSER AREA THAN THE DIMPLES; SCORING THE CAN TOPS TO FORM TEAR STRIPS THEREIN AT ONE OF SAID FORMING STATIONS; PLACING APERTURED TABS ON THE FORMED HOLLOW RIVETS AND DEFORMING THE HOLLOW RIVETS INTO PERMANENT ENGAGEMENT WITH THE TABS AT ANOTHER OF THE FORMING STATIONS; AND SEVERING THE CAN TOPS WITH THE TABS THEREON FROM THE SHEET AT THE FINAL SHEARING STATION.
Claim 2
Independent Claim
162 words
A METHOD OF FABRICATING CAN TOPS HAVING TEAR STRIPS WITH TABS ATTACHED THERETO FOR MANUAL REMOVAL OF THE TEAR STRIPS, CHARACTERIZED BY THE STEPS OF: ADVANCING A SHEET OF DEFORMABLE MATERIAL STEP BY STEP THROUGH A SERIES OF WORK STATIONS INCLUDING A SUCCESSION OF FORMING STATIONS AND A FINAL SHEARING STATION; FORMING CAN TOPS IN SAID SHEET AT ONE OF SAID FORMING STATIONS WITHOUT SEVERING THE CAN TOPS FROM THE SHEET; FORMING DIMPLES IN THE CAN TOPS AT ONE OF SAID FORMING STATIONS; AT A SUBSEQUENT FORMING STATION FORCIBLY CONVERTING THE DIMPLES INTO HOLLOW RIVETS WITH TRANSVERSE END WALLS OF LESSER AREA THAN THE DIMPLES; SCORING THE CAN TOPS TO FORM TEAR STRIPS THEREIN AT ONE OF SAID FORMING STATIONS; PLACING APERTURED TABS ON THE FORMED HOLLOW RIVETS AND DEFORMING THE HOLLOW RIVETS INTO PERMANENT ENGAGEMENT WITH THE TABS AT ANOTHER OF THE FORMING STATIONS; AND SEVERING THE CAN TOPS WITH THE TABS THEREON FROM THE SHEET AT THE FINAL SHEARING STATION.
References Cited (Backward Citations)
US1715812A
Cited
US2544969A
Cited
US3070058A
Cited
US2992857A
Cited
US3151766A
Cited
US3191797A
Cited
US3272166A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-29 | 1971-07-31 | 1972-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-29 | 1975-07-31 | 1976-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-29 | 1979-07-31 | 1980-01-30 | $7700.00 | Window Closed / Lapsed |