US2858247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Panel material
Assignee: DE SWART DEVELOPMENT Co
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Filing: 1955-08-04
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Granted: 1958-10-28
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Expires: 1975-08-04
Abstract
No abstract record available.
Inventors
- 👤 Swart Jan De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:19
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/30; E04C2/34; E04C2/3405; E04C2002/3444; E04C2002/3455; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24628; Y10T428/24669; Y10T428/24678; Y10T428/24736; Y10T428/31504; Y10T428/31855
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A LAMINATED STRUCTURAL PANEL COMPRISING A THIN SHEET CORE EMBOSSED TO FORM SPACED OPPOSED FACES, EACH FACE COMPRISING A MULTIPLICITY OF PROJECTIONS, THE PROJECTIONS, EACH HAVING A FLAT BEARING SURFACE COMPRISING AT LEAST TWO CONTIGUOUS CO-PLANAR RECTILINEAR AREAS HAVING DIVERGENT MAJOR AXES, THE BEARING SURFACES BEING EVENLY DISTRIBUTED IN EACH FACE OF THE EMBOSSED SHEET, THE OPPOSITE SPACED FACES HAVING IDENTICAL BEARING SURFACE PATTERNS WITH THE PATTERN IN ONE FACE BEING LATERALLY OFF-SET WITH RESPECT TO THE PATTERN IN THE OTHER FACE WITH THE PATTERNS IN THE TWO FACES MUTALLY INTERLOCKING SO THAT ANY PLANE PASSING THROUGH THE CORE PERPENDICULAR TO A FACE INTERCEPTS MORE THAN ONE BEARING SURFACE IN EACH FACE, AND A SKIN BONDED TO THE BEARING SURFACES OF EACH FACE OF THE CORE SO THAT THE SKIN AND BEARING SURFACES ARE BONDED TOGETHER TO FORM A MULTIPLICITY OF RECTILINEAR JOINTS OF INDENTICAL SHAPE AND AREA ON OPPOSITE SIDES OF THE CORE.
Claim 2
Dependent Claim
154 words
A LAMINATED STRUCTURAL PANEL COMPRISING A THIN SHEET CORE EMBOSSED TO FORM SPACED OPPOSED FACES, EACH FACE COMPRISING A MULTIPLICITY OF PROJECTIONS, THE PROJECTIONS, EACH HAVING A FLAT BEARING SURFACE COMPRISING AT LEAST TWO CONTIGUOUS CO-PLANAR RECTILINEAR AREAS HAVING DIVERGENT MAJOR AXES, THE BEARING SURFACES BEING EVENLY DISTRIBUTED IN EACH FACE OF THE EMBOSSED SHEET, THE OPPOSITE SPACED FACES HAVING IDENTICAL BEARING SURFACE PATTERNS WITH THE PATTERN IN ONE FACE BEING LATERALLY OFF-SET WITH RESPECT TO THE PATTERN IN THE OTHER FACE WITH THE PATTERNS IN THE TWO FACES MUTALLY INTERLOCKING SO THAT ANY PLANE PASSING THROUGH THE CORE PERPENDICULAR TO A FACE INTERCEPTS MORE THAN ONE BEARING SURFACE IN EACH FACE, AND A SKIN BONDED TO THE BEARING SURFACES OF EACH FACE OF THE CORE SO THAT THE SKIN AND BEARING SURFACES ARE BONDED TOGETHER TO FORM A MULTIPLICITY OF RECTILINEAR JOINTS OF INDENTICAL SHAPE AND AREA ON OPPOSITE SIDES OF THE CORE.
References Cited (Backward Citations)
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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) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |