Patent US1620531A successfully refreshed from Google Patents.
Patent US3211601A successfully refreshed from Google Patents.
US3211601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cored structural panel
Assignee: Beazer East Inc
•
Filing: 1963-06-03
•
Granted: 1965-10-12
•
Expires: 1983-06-03
Abstract
No abstract record available.
Inventors
- 👤 Stanley W Wand
- 👤 Charles B Kurz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:31
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/02; E04C2/10; E04C2/20; E04C2/22; B; B32; B32B; B32B27/00; B29; B29C; B29C65/00; B29C65/48; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062; Y10T156/1064; Y10T428/00; Y10T428/23; Y10T428/233; Y10T428/234; Y10T428/236; Y10T428/24; Y10T428/24149; Y10T428/24157
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
188 words
THE METHOD OF FORMING A MULTILAYERED STRUCTURAL PANEL COMPRISING THE STEPS OF: (A) FORMING A FIRST PLURALITY OF SPCAED GROOVES IN A FOAM PLASTIC MOLD MEMBER, THE GROOVES EXTENDING INWARDLY FROM A FIRST PLANAR MOLD SURFACE TO A DEPTH LESS THAN THE TOTAL THICKNESS OF THE MOLD MEMBER THE GROOVES EACH HAVING A FIRST RELATIVELY THIN MIDPORTION DISPOSED WITHIN THE THICKNESS DIMENSION OF THE MOLD AND SECOND AND THIRD END PROTIONS PERPENDICULAR TO AND SUBSTANTIALLY WIDER THANT THE FIRST PORTION, THE SECOND GROOVE PORTION BEING FORMED FLUSH WITH THE FIRST SURFACE OF THE MOLD MEMBER AT ONE END OF THE FIRST PORTION OF THE GROOVES, THE THIRD GROOVE PORTION BEING FORMED AT THE OPPOSITE END OF THE FIRST GROOVE PORTION; (B) FILLING THE GROOVES WITH A PLASTIC SUBSTANTIALLY DENSER THAN THE MOLD MEMBER; (C) REMOVING MATERIAL FROM THE SURFACE OF THE MOLD MEMBER OPPOSITE THE GROOVED SURFACE TO THE DEPTH OF THE DENSER PLASTIC DISPOSED IN THE GROOVES WHEREBY THE DENSER PLASTIC EXTENDS THROUGHOUT THE THICKNESS OF THE MOLD MEMBER TO PROVIDE CONTINUOUS REINFORCING; AND (D) SECURING A FACING SHEET TO THE GROOVED SURFACE AND THE OPPOSITE SURFACE.
Claim 2
Independent Claim
188 words
THE METHOD OF FORMING A MULTILAYERED STRUCTURAL PANEL COMPRISING THE STEPS OF: (A) FORMING A FIRST PLURALITY OF SPCAED GROOVES IN A FOAM PLASTIC MOLD MEMBER, THE GROOVES EXTENDING INWARDLY FROM A FIRST PLANAR MOLD SURFACE TO A DEPTH LESS THAN THE TOTAL THICKNESS OF THE MOLD MEMBER THE GROOVES EACH HAVING A FIRST RELATIVELY THIN MIDPORTION DISPOSED WITHIN THE THICKNESS DIMENSION OF THE MOLD AND SECOND AND THIRD END PROTIONS PERPENDICULAR TO AND SUBSTANTIALLY WIDER THANT THE FIRST PORTION, THE SECOND GROOVE PORTION BEING FORMED FLUSH WITH THE FIRST SURFACE OF THE MOLD MEMBER AT ONE END OF THE FIRST PORTION OF THE GROOVES, THE THIRD GROOVE PORTION BEING FORMED AT THE OPPOSITE END OF THE FIRST GROOVE PORTION; (B) FILLING THE GROOVES WITH A PLASTIC SUBSTANTIALLY DENSER THAN THE MOLD MEMBER; (C) REMOVING MATERIAL FROM THE SURFACE OF THE MOLD MEMBER OPPOSITE THE GROOVED SURFACE TO THE DEPTH OF THE DENSER PLASTIC DISPOSED IN THE GROOVES WHEREBY THE DENSER PLASTIC EXTENDS THROUGHOUT THE THICKNESS OF THE MOLD MEMBER TO PROVIDE CONTINUOUS REINFORCING; AND (D) SECURING A FACING SHEET TO THE GROOVED SURFACE AND THE OPPOSITE SURFACE.
References Cited (Backward Citations)
US1531983A
Cited
US2460309A
Cited
US2826521A
Cited
US2837455A
Cited
US2791264A
Cited
US3016578A
Cited
US3016580A
Cited
US3078948A
Cited
US2999043A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |