US3358487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro-hydraulic forming apparatus
Assignee: Primerica Inc
•
Filing: 1965-08-16
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Granted: 1967-12-19
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Expires: 1985-08-16
Abstract
No abstract record available.
Inventors
- 👤 Brejcha Robert John
- 👤 Bazell Seymour
- 👤 Joseph L Radnik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:16
CPC Classifications
B; B21; B21D; B21D26/00; B21D26/02; B21D26/06; B21D26/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A FORMING HEAD MECHANISM FOR ELECTRO-HYDRAULICALLY SHAPING A DRAWN CUP-SHAPED CONTAINER BODY IN A FORMING DIE COMPRISING A SUPPORT, A TUBULAR IMPERMEABLE RUBBER DIAPHRAGM SECURED AT ONE END TO SAID SUPPORT IN FLUID TIGHT ENGAGEMENT, SAID DIAPHRAGM HAVING EXTERIOR GEOMETRY SUBSTANTIALLY THE SAME AS THE INTERIOR OF SAID BODY AND BEING INSERTIBLE THEREIN, A PAIR OF ELECTRODES TIGHTLY INSERTED WITHIN THE OPPOSITE ENDS OF SAID DIAPHRAGM WITH THEIR TIPS PROJECTING INWARDLY OF SAID ENDS IN PREDETERMINED SPACED ALIGNMENT, ONE OF SAID ELECTRODES EXTENDING THROUGH SAID SUPPORT AND THE OTHER BEING SECURED IN FLUID TIGHT ENGAGEMENT TO THE OPPOSITE END OF SAID DIAPHRAGM, SAID OTHER ELECTRODE HAVING AN EXTERIOR CONTACTING FACE CONTOURED TO CONFORM SUBSTANTIALLY TO THE CLOSED END OF SAID CUP-SHAPED BODY WHEN SAID DIAPHRAGM IS INSERTED THEREIN TO MAKE ELECTRICAL CONTACT THROUGH SAID END PANEL WITH THE CONDUCTOR OF AN ELECTRICAL POWER SOURCE ADAPTED
Claim 2
Dependent Claim
145 words
A FORMING HEAD MECHANISM FOR ELECTRO-HYDRAULICALLY SHAPING A DRAWN CUP-SHAPED CONTAINER BODY IN A FORMING DIE COMPRISING A SUPPORT, A TUBULAR IMPERMEABLE RUBBER DIAPHRAGM SECURED AT ONE END TO SAID SUPPORT IN FLUID TIGHT ENGAGEMENT, SAID DIAPHRAGM HAVING EXTERIOR GEOMETRY SUBSTANTIALLY THE SAME AS THE INTERIOR OF SAID BODY AND BEING INSERTIBLE THEREIN, A PAIR OF ELECTRODES TIGHTLY INSERTED WITHIN THE OPPOSITE ENDS OF SAID DIAPHRAGM WITH THEIR TIPS PROJECTING INWARDLY OF SAID ENDS IN PREDETERMINED SPACED ALIGNMENT, ONE OF SAID ELECTRODES EXTENDING THROUGH SAID SUPPORT AND THE OTHER BEING SECURED IN FLUID TIGHT ENGAGEMENT TO THE OPPOSITE END OF SAID DIAPHRAGM, SAID OTHER ELECTRODE HAVING AN EXTERIOR CONTACTING FACE CONTOURED TO CONFORM SUBSTANTIALLY TO THE CLOSED END OF SAID CUP-SHAPED BODY WHEN SAID DIAPHRAGM IS INSERTED THEREIN TO MAKE ELECTRICAL CONTACT THROUGH SAID END PANEL WITH THE CONDUCTOR OF AN ELECTRICAL POWER SOURCE ADAPTED
References Cited (Backward Citations)
US2559227A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-18 | 1971-06-19 | 1971-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-18 | 1975-06-19 | 1975-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-18 | 1979-06-19 | 1979-12-19 | $7700.00 | Window Closed / Lapsed |