Patent US851300A successfully refreshed from Google Patents.
Patent US3339915A successfully refreshed from Google Patents.
US3339915A
Expired / Lapsed
US
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Method and apparatus for handling ferromagnetic sheets
Assignee: Cefilac SA
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Filing: 1965-06-22
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Granted: 1967-09-05
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Expires: 1985-06-22
Abstract
No abstract record available.
Inventors
- 👤 Ricard Maurice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:55
CPC Classifications
B; B21; B21D; B21D43/00; B21D43/20; B21D43/24; B21D43/02; B21D43/18; B65; B65G; B65G59/00; B65G59/02; B65G59/04; B65G59/045; B65H; B65H3/00; B65H3/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
APPARATUS FOR TRANSFERRING FLEXIBLE SHEETS OF FERROMAGNETIC METAL FROM A STACK AT A FIRST LOCATION TO A SECOND LOCATION COMPRISING (1) A MOVABLE CONVEYER DISPOSED ABOVE AND SPACED FROM AND EXTENDING BETWEEN SAID LOCATIONS, (2) MAGNETS ASSOCIATED WITH SAID CONVEYER, (A) SAID MAGNETS ESTABLISHING A MAGNETIC FIELD IN THE SPACE BETWEEN THE CONVEYER AND SAID LOCATIONS, (3) MEANS FOR LIFTING, IN THE TOPMOST SHEET IN SAID STACK, THE END OF SAID TOPMOST SHEET REMOTE FROM SAID SECOND LOCATION INTO A POSITION WITHIN SAID FIELD WHERE THE LIFTED END OF SAID SHEET IS MAGNETICALLY ATTRACTED INTO ENGAGEMENT WITH SAID CONVEYOR AND SUCCESSIVE PORTIONS OF SAID SHEET PROGRESSING TOWARD THE END OF SAID SHEET ADJACENT SAID SECOND LOCATION THEREUPON BECOME MAGNETICALLY ATTRACTED INTO ENGAGEMENT WITH SAID CONVEYOR UNTIL THE ENTIRE SHEET IS HELD MAGNETICALLY IN CONTACT WITH THE CONVEYER AGAINST THE FORCE OF GRAVITY, AND (4) MEANS FOR MOVING SAID CONVEYER FROM ABOVE SAID FIRST LOCATION TO A POSITION HIGHER THAN AND ADJACENT TO SAID SECOND LOCATION.
Claim 2
Dependent Claim
165 words
APPARATUS FOR TRANSFERRING FLEXIBLE SHEETS OF FERROMAGNETIC METAL FROM A STACK AT A FIRST LOCATION TO A SECOND LOCATION COMPRISING (1) A MOVABLE CONVEYER DISPOSED ABOVE AND SPACED FROM AND EXTENDING BETWEEN SAID LOCATIONS, (2) MAGNETS ASSOCIATED WITH SAID CONVEYER, (A) SAID MAGNETS ESTABLISHING A MAGNETIC FIELD IN THE SPACE BETWEEN THE CONVEYER AND SAID LOCATIONS, (3) MEANS FOR LIFTING, IN THE TOPMOST SHEET IN SAID STACK, THE END OF SAID TOPMOST SHEET REMOTE FROM SAID SECOND LOCATION INTO A POSITION WITHIN SAID FIELD WHERE THE LIFTED END OF SAID SHEET IS MAGNETICALLY ATTRACTED INTO ENGAGEMENT WITH SAID CONVEYOR AND SUCCESSIVE PORTIONS OF SAID SHEET PROGRESSING TOWARD THE END OF SAID SHEET ADJACENT SAID SECOND LOCATION THEREUPON BECOME MAGNETICALLY ATTRACTED INTO ENGAGEMENT WITH SAID CONVEYOR UNTIL THE ENTIRE SHEET IS HELD MAGNETICALLY IN CONTACT WITH THE CONVEYER AGAINST THE FORCE OF GRAVITY, AND (4) MEANS FOR MOVING SAID CONVEYER FROM ABOVE SAID FIRST LOCATION TO A POSITION HIGHER THAN AND ADJACENT TO SAID SECOND LOCATION.
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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) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |