Patent US3892898A successfully refreshed from Google Patents.
US3892898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Panel core
Assignee: Individual
•
Filing: 1972-10-16
•
Granted: 1975-07-01
•
Expires: 1992-10-16
Abstract
Abstract A panel core for use as the core of a panel in which folded expandable panel members are provided between partition plates, the panel members having a shape such that when the partition plates are moved apart, the panel members interengage to hold the partition plates in the expanded condition.
Inventors
- 👤 Shinjiro Yasui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:00
CPC Classifications
B; B32; B32B; B32B29/00; B32B29/002; B32B29/005; B32B3/00; B32B3/10; B32B3/12; B29; B29L; B29L2031/00; B29L2031/44; B32B2607/00; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1003; Y10T428/00; Y10T428/24; Y10T428/24149; Y10T428/24174
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
287 words
A PANEL CORE COMPRISING AT LEAST ONE ROW OF CORE MEMBERS AND PARTITION PLATES ON OPPOSITE SIDES OF THE CORE MEMBERS IN THE ROW, EACH CORE MEMBER COMPRISING A FIRST PANEL MEMBER HAVING A GENERALLY W-SHAPED CROSS SECTION WITH END PANEL PORTIONS AND A FOLDED PANEL PORTION THEREBETWEEN HAVINGACENTRAL APEX FOLD AND JOINED TO THE END PANEL POTIONS ALONG FOLDS, AND A SECOND PANEL MEMBER HAVING A GENERALLY V-SHAPED CROSSS SECTION WITH END PANEL PORTIONS JOINED AT AN APEX FOLD, THE FREE ENDS OF THE END PANEL PORTIONS OF THE SECOND PANEL MEMBER BEING ATTACHED TO THE FIRST PNEL MEMBER AT THE FOLDS OF THE FIRST PANEL MEMBER WHERE THE END PANEL PORTIONS OF THE FIRST PANEL MEMBER JOIN THE FOLDED PANEL PORTION OF THE FIRST PANEL MEMBER, THE OUTSIDE SURFACES OF THE END PANEL PORTIONS OF THE FIRST PANEL MEMBER BEING SECURED TO SAID PARTITION PLATES, ADJACENT CORE MEMBERS, IN THE FOLDED CONDITION OF THE PANEL CORE WHN THE PARTITION PLATES ARE CLOSE TO EACH OTHER, HAVING THE FLAT FOLDED SECOND PANEL MEMBER OF ONE CORE MEMBER INTERLEAVED BETWEEN ONE END OF THE END PANEL PORTIONS AND THE FOLDED PANEL PORTION OF THE FIRST PANEL MEMBER OF THE NEXT ADJACENT CORE MEMBER AND BEING UNSECURED TO EACH OTHER, AND IN THE EXPANDED CONDITION OF THE PANEL CORE WHEN THE PARTITION PLATES ARE MOVED AWAY FROM EACH OTHER, THE CENTRAL APEX FOLD OF THE FOLDED PANEL PORTION OF THE FIRST PANEL MEMBER OF ONE CORE MEMBER BEING OPPOSED TO THE APEX FOLD OF THE SECOND PANEL MEMBER OF THE NEXT ADJACENT MEMBER, ONE OF THE APEX FOLDS HAVING AN INVERTED V-SHAPED PORTION INTERLOCKING WITH THE OTHER APEX FOLD FOR RETAINING THE PANEL CORE IN THE EXPANDED CONDITION.
Claim 2
Dependent Claim
287 words
A PANEL CORE COMPRISING AT LEAST ONE ROW OF CORE MEMBERS AND PARTITION PLATES ON OPPOSITE SIDES OF THE CORE MEMBERS IN THE ROW, EACH CORE MEMBER COMPRISING A FIRST PANEL MEMBER HAVING A GENERALLY W-SHAPED CROSS SECTION WITH END PANEL PORTIONS AND A FOLDED PANEL PORTION THEREBETWEEN HAVINGACENTRAL APEX FOLD AND JOINED TO THE END PANEL POTIONS ALONG FOLDS, AND A SECOND PANEL MEMBER HAVING A GENERALLY V-SHAPED CROSSS SECTION WITH END PANEL PORTIONS JOINED AT AN APEX FOLD, THE FREE ENDS OF THE END PANEL PORTIONS OF THE SECOND PANEL MEMBER BEING ATTACHED TO THE FIRST PNEL MEMBER AT THE FOLDS OF THE FIRST PANEL MEMBER WHERE THE END PANEL PORTIONS OF THE FIRST PANEL MEMBER JOIN THE FOLDED PANEL PORTION OF THE FIRST PANEL MEMBER, THE OUTSIDE SURFACES OF THE END PANEL PORTIONS OF THE FIRST PANEL MEMBER BEING SECURED TO SAID PARTITION PLATES, ADJACENT CORE MEMBERS, IN THE FOLDED CONDITION OF THE PANEL CORE WHN THE PARTITION PLATES ARE CLOSE TO EACH OTHER, HAVING THE FLAT FOLDED SECOND PANEL MEMBER OF ONE CORE MEMBER INTERLEAVED BETWEEN ONE END OF THE END PANEL PORTIONS AND THE FOLDED PANEL PORTION OF THE FIRST PANEL MEMBER OF THE NEXT ADJACENT CORE MEMBER AND BEING UNSECURED TO EACH OTHER, AND IN THE EXPANDED CONDITION OF THE PANEL CORE WHEN THE PARTITION PLATES ARE MOVED AWAY FROM EACH OTHER, THE CENTRAL APEX FOLD OF THE FOLDED PANEL PORTION OF THE FIRST PANEL MEMBER OF ONE CORE MEMBER BEING OPPOSED TO THE APEX FOLD OF THE SECOND PANEL MEMBER OF THE NEXT ADJACENT MEMBER, ONE OF THE APEX FOLDS HAVING AN INVERTED V-SHAPED PORTION INTERLOCKING WITH THE OTHER APEX FOLD FOR RETAINING THE PANEL CORE IN THE EXPANDED CONDITION.
Claim 3
Dependent Claim
47 words
A panel member as claimed in claim 1 in which there are a plurality of rows of core members, the partition plate on one side of one row of core members being the partition plate for the other side of the next adjacent row of core members.
References Cited (Backward Citations)
US1000758A
Cited
US2577120A
Cited
US2848132A
Cited
US2654686A
Cited
US2839442A
Cited
US3018205A
Cited
US3109766A
Cited
US3191724A
Cited
US3170471A
Cited
US3227600A
Cited
US3520763A
Cited
US3574103A
Cited
US3481427A
Cited
US3669820A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-30 | 1978-12-30 | 1979-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-30 | 1982-12-30 | 1983-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-30 | 1986-12-30 | 1987-07-01 | $7700.00 | Window Closed / Lapsed |