Patent EP0147975A2 successfully refreshed from Google Patents.
Patent US3273365A successfully refreshed from Google Patents.
US3273365A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for forming metal
Assignee: Cincinnati Shaper Co
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Filing: 1963-05-14
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Granted: 1966-09-20
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Expires: 1983-05-14
Abstract
No abstract record available.
Inventors
- 👤 Felts Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:07
CPC Classifications
B; B21; B21D; B21D26/00; B21D26/02; B21D26/06; B21D26/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
IN A DEVICE FOR FORMING MATERIAL OF THE TYPE UTILIZING A LIQUID CHAMBER, A CONFINED FORMING CAVITY AND AN ELECTRODE IN SAID CHAMBER FOR CARRYING A CHARGE OF HIGH POTENTIAL TO SAID CHAMBER AND A HIGH CAPACITANCE CIRCUIT ADAPTED TO BE DISCHARGED TO SAID ELECTRODE, AN IMPROVED SWITCH FOR CONTROLLING THE CHARGE AND DISCHARGE OF A HIGH POENTIAL CAPACITANCE WHICH COMPRISES: (A) SPACED FIRST CONTACT MEMBERS FOR A CHARGING SWITCH, (B) MEANS FOR SUPPORTING SAID SPACED CONTACT MEMBERS IN SPACED RELATION, (C) SPACED SECOND CONTACT MEMBERS FOR A DISCHARGE SWITCH, (D) MEANS FOR MOUNTING SAID SECOND CONTACT IN SPACED RELATION TO EACH OTHER AND TO SAID FIRST CONTACT MEMBERS, (E) A FIRST CONDUCTIVE BAR MOUNTED TO CONTACT SIMULTANEOUSLY SAID FIRST CONTACT MEMBERS AND SAPN THE DISTANCE THEREBETWEEN TO PROVIDE A CONDUCTIVE CONNECTION, (F) A SECOND CONDUCTIVE BAR MOUNTED TO CONTACT SIMULSAID SECOND CONTACT MEMBERS WITHOUT CONTACTING
Claim 2
Dependent Claim
146 words
IN A DEVICE FOR FORMING MATERIAL OF THE TYPE UTILIZING A LIQUID CHAMBER, A CONFINED FORMING CAVITY AND AN ELECTRODE IN SAID CHAMBER FOR CARRYING A CHARGE OF HIGH POTENTIAL TO SAID CHAMBER AND A HIGH CAPACITANCE CIRCUIT ADAPTED TO BE DISCHARGED TO SAID ELECTRODE, AN IMPROVED SWITCH FOR CONTROLLING THE CHARGE AND DISCHARGE OF A HIGH POENTIAL CAPACITANCE WHICH COMPRISES: (A) SPACED FIRST CONTACT MEMBERS FOR A CHARGING SWITCH, (B) MEANS FOR SUPPORTING SAID SPACED CONTACT MEMBERS IN SPACED RELATION, (C) SPACED SECOND CONTACT MEMBERS FOR A DISCHARGE SWITCH, (D) MEANS FOR MOUNTING SAID SECOND CONTACT IN SPACED RELATION TO EACH OTHER AND TO SAID FIRST CONTACT MEMBERS, (E) A FIRST CONDUCTIVE BAR MOUNTED TO CONTACT SIMULTANEOUSLY SAID FIRST CONTACT MEMBERS AND SAPN THE DISTANCE THEREBETWEEN TO PROVIDE A CONDUCTIVE CONNECTION, (F) A SECOND CONDUCTIVE BAR MOUNTED TO CONTACT SIMULSAID SECOND CONTACT MEMBERS WITHOUT CONTACTING
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |