Patent US4862436A successfully refreshed from Google Patents.
Patent US3338080A successfully refreshed from Google Patents.
US3338080A
Expired / Lapsed
US
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Forming apparatus
Assignee: General Dynamics Corp
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Filing: 1964-09-21
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Granted: 1967-08-29
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Expires: 1984-09-21
Abstract
No abstract record available.
Inventors
- 👤 Martin P Golden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:35
CPC Classifications
B; B21; B21D; B21D26/00; B21D26/02; B21D26/06; B21D26/12; B21C; B21C37/00; B21C37/06; B21C37/08; B21C37/0807; B21D26/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
APPARATUS FOR ELECTOHYDRAULIC FORMING WHICH COMPRISES FIRST AND SECOND OPPOSED DIE SECTIONS MOVABLE TOWARD AND AWAY FROM EACH OTHER, SAID DIE SECTIONS DEFINING A DIE CAVITY THEREBETWEEN, MEANS FOR INTRODUCING LIQUID INTO SAID DIE CAVITY, MEANS FOR CONTROLLING THE MOVEMENT OF SAID DIE SECTIONS, SAID CONTROL MEANS BEING OPERABLE TO MOVE SAID FIRST DIE SECTION INWARD TO A REFERENCE POSITION AND TO MOVE SAID SECOND DIE SECTION INWARD TO MEET SAID FIRST DIE SECTION AT SAID REFERENCE POSITION, SAID CONTROL MEANS ALSO BEING OPERABLE TO APPLY A FIRST INTENSE SUPPLEMENTARY INWARD FORCE TO SAID FIRST DIE SECTION AND A
Claim 2
Dependent Claim
99 words
APPARATUS FOR ELECTOHYDRAULIC FORMING WHICH COMPRISES FIRST AND SECOND OPPOSED DIE SECTIONS MOVABLE TOWARD AND AWAY FROM EACH OTHER, SAID DIE SECTIONS DEFINING A DIE CAVITY THEREBETWEEN, MEANS FOR INTRODUCING LIQUID INTO SAID DIE CAVITY, MEANS FOR CONTROLLING THE MOVEMENT OF SAID DIE SECTIONS, SAID CONTROL MEANS BEING OPERABLE TO MOVE SAID FIRST DIE SECTION INWARD TO A REFERENCE POSITION AND TO MOVE SAID SECOND DIE SECTION INWARD TO MEET SAID FIRST DIE SECTION AT SAID REFERENCE POSITION, SAID CONTROL MEANS ALSO BEING OPERABLE TO APPLY A FIRST INTENSE SUPPLEMENTARY INWARD FORCE TO SAID FIRST DIE SECTION AND A
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) | 1970-08-28 | 1971-02-27 | 1971-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-28 | 1975-02-27 | 1975-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-28 | 1979-02-27 | 1979-08-29 | $7700.00 | Window Closed / Lapsed |