US2756707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for drawing sheet metal blanks
Assignee: Baldwin Lima Hamilton Corp
•
Filing: 1952-04-24
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Granted: 1956-07-31
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Expires: 1972-04-24
Abstract
No abstract record available.
Inventors
- 👤 Peters Anthony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:38
CPC Classifications
B; B21; B21D; B21D22/00; B21D22/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
AN APPARATUS FOR FORMING A METAL BLANK, COMPRISING A CASING COMPOSED TO A FIRST SECTION AND A SECOND SECTION, A BLANK SUPPORTING MEANS POSITIONED BETWEEN SAID SECTIONS AND HAVING AN OPENING THEREIN, MEANS FOR LOCKING SAID SECTIONS TOGETHER, A PUNCH NORMALLY POSITIONED IN SAID FIRST SECTION AND ADAPTED TO OPERATE IN SAID OPENING OF THE BLANK SUPPORTING MEANS, SAID PUNCH HAVING A HEAD AND A REDUCED REAR PORTION, A FLEXIBLE MEMBER IN THE FIRST SECTION IN DIRECT ENGAGEMENT WITH THE HEAD AND REDUCED REAR PORTION OF THE PUNCH AND WITH THE BLANK SUPPORTING MEANS, A FLEXIBLE MEMBER IN THE SECOND SECTION IN DIRECT ENGAGEMENT WITH THE BLANK, BOTH FLEXIBLE MEMBERS ACTING LIKE A FLUID UNDER PRESSURE, ACTUATING MEANS FOR EFFECTING RELATIVE MOVEMENT BETWEEN THE PUNCH AND THE BLANK SUP-
Claim 2
Independent Claim
129 words
AN APPARATUS FOR FORMING A METAL BLANK, COMPRISING A CASING COMPOSED TO A FIRST SECTION AND A SECOND SECTION, A BLANK SUPPORTING MEANS POSITIONED BETWEEN SAID SECTIONS AND HAVING AN OPENING THEREIN, MEANS FOR LOCKING SAID SECTIONS TOGETHER, A PUNCH NORMALLY POSITIONED IN SAID FIRST SECTION AND ADAPTED TO OPERATE IN SAID OPENING OF THE BLANK SUPPORTING MEANS, SAID PUNCH HAVING A HEAD AND A REDUCED REAR PORTION, A FLEXIBLE MEMBER IN THE FIRST SECTION IN DIRECT ENGAGEMENT WITH THE HEAD AND REDUCED REAR PORTION OF THE PUNCH AND WITH THE BLANK SUPPORTING MEANS, A FLEXIBLE MEMBER IN THE SECOND SECTION IN DIRECT ENGAGEMENT WITH THE BLANK, BOTH FLEXIBLE MEMBERS ACTING LIKE A FLUID UNDER PRESSURE, ACTUATING MEANS FOR EFFECTING RELATIVE MOVEMENT BETWEEN THE PUNCH AND THE BLANK SUP-
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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) | 1959-07-31 | 1960-01-30 | 1960-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-31 | 1964-01-30 | 1964-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-31 | 1968-01-30 | 1968-07-31 | $7700.00 | Window Closed / Lapsed |