US4348442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structural panel
Assignee: Individual
•
Filing: 1981-04-22
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Granted: 1982-09-07
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Expires: 2001-04-22
Abstract
Abstract A structural panel comprises truncated polyhedral elements projecting from a base sheet, with the base sheet and truncation surfaces providing increased bonding areas for external face sheets. Mass produced, identical panels which are nestable for shipping and storage may be combined in an interlocking arrangement to form a combined panel which is nearly isotropic in its reaction to external loads.
Inventors
- 👤 Irving E. Figge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:52
CPC Classifications
B; B32; B32B; B32B3/00; B32B3/26; B32B3/30; E; E04; E04C; E04C2/00; E04C2/30; E04C2/34; E04C2/3405; B32B2315/00; B32B2315/06; B32B2315/08; B32B2315/085; E04C2002/3411; E04C2002/3422; E04C2002/3433; E04C2002/3472; F; F24; F24S; F24S10/00; F24S10/50; F24S10/503; F24S25/00; F24S25/10; F24S25/11; Y; Y10; Y10T; Y10T428/00; Y10T428/23; Y10T428/234; Y10T428/239; Y10T428/24; Y10T428/24628; Y10T428/24661; Y10T428/24669; Y10T428/24678; Y10T428/24694; Y10T428/24702; Y10T428/24711; Y10T428/24727
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
179 words
A combined structural panel comprising: at least two, substantially duplicate, single structural panels, each of said single structural panels comprising a base sheet, plural generally polyhedral-shaped load bearing elements protruding from said base sheet; each of said elements comprising a base attached to said base sheet, a truncated apex, and face structure connecting said base and said truncated apex; at least one of said single panels inverted with respect to at least one other of said single panels to define respective, opposing top and bottom panels, respectively, such that the elements of said top and bottom panels have their respective elements protruding in opposite directions; said elements of each single panel further comprising large and small elements, said large elements having a base-to-truncated apex height greater than that of said small elements, said large and small elements of each of said top and bottom panels alternately arranged such that truncated apexes of said small elements of opposing single panels abut and truncated apexes of said large elements of a single panel abut the base of the opposing single panel.
Claim 2
Dependent Claim
179 words
A combined structural panel comprising: at least two, substantially duplicate, single structural panels, each of said single structural panels comprising a base sheet, plural generally polyhedral-shaped load bearing elements protruding from said base sheet; each of said elements comprising a base attached to said base sheet, a truncated apex, and face structure connecting said base and said truncated apex; at least one of said single panels inverted with respect to at least one other of said single panels to define respective, opposing top and bottom panels, respectively, such that the elements of said top and bottom panels have their respective elements protruding in opposite directions; said elements of each single panel further comprising large and small elements, said large elements having a base-to-truncated apex height greater than that of said small elements, said large and small elements of each of said top and bottom panels alternately arranged such that truncated apexes of said small elements of opposing single panels abut and truncated apexes of said large elements of a single panel abut the base of the opposing single panel.
Claim 3
Dependent Claim
16 words
A combined structural panel as in claim 1, wherein each of said elements is generally tetrahedronal-shaped.
Claim 4
Dependent Claim
68 words
A combined structural panel as in claim 1, wherein said face structure comprises: truncated, generally planar surface, face intersections defining quasi-faces and wherein at least one of said large element quasi-faces of said top panel abut at least one of said large element quasi-faces of said bottom panel to provide interlocking and internal load bearing support for said combined structural panel in directions generally parallel to said bases.
Claim 5
Dependent Claim
16 words
A combined structural panel as in claim 3, wherein each of said elements is generally tetrahedronal-shaped.
Claim 6
Dependent Claim
69 words
A combined strutural panel as in claim 1, wherein said face structure comprises: altered intersections of faces of said elements, each of said altered intersections being stepped to provide corners protruding inwardly of said elements and corners protruding outwardly of said elements such that said inwardly and outwardly protruding corners are mated to provide interlocking of said structural panels at least in a direction generally parallel to said bases.
Claim 7
Dependent Claim
16 words
A combined structural panel as in claim 5, wherein each of said elements is generally tetrahedronal-shaped.
Claim 8
Dependent Claim
25 words
A combined structural panel as in claim 1, and further comprising a first face sheet attached to at least one side of said combined panel.
Claim 9
Dependent Claim
23 words
A combined structural panel as in claim 7, and further comprising a second face sheet attached to the other side of said panel.
Claim 10
Dependent Claim
21 words
A combined structural panel as in claim 8, and further comprising a third face sheet enclosing the periphery of said panel.
Claim 11
Dependent Claim
125 words
A combined structural panel as in claim 1, wherein said face structure of each large element comprises at least three faces, said large elements of each single panel having equal dimensions and arranged in longitudinal rows, each row of said large elements being in offset sequential relation to the large elements in an adjacent row, such that two sides of all large elements are disposed in oppositely inclining, parallel planes and the remaining sides of all of said large elements are disposed in parallel longitudinal planes, such that any three of said planes intersecting encloses said large elements above said base sheet with each of said intersecting planes containing a face of each large element, whereby three-axis stability is provided for said combined structural panel.
References Cited (Backward Citations)
BE498839A
Cited
US3142599A
Cited
US3642566A
Cited
US3645833A
Cited
US3657059A
Cited
US3689345A
Cited
US3899805A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-09-06 | 1986-03-08 | 1986-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-06 | 1990-03-08 | 1990-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-06 | 1994-03-08 | 1994-09-07 | $7700.00 | Window Closed / Lapsed |