Patent US4517782A successfully refreshed from Google Patents.
US4517782A
Expired / Lapsed
US
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Construction element
Assignee: Nadalaan SA
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Filing: 1981-12-14
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Granted: 1985-05-21
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Expires: 2001-12-14
Abstract
Abstract A construction element comprises a ribbed sheet metal core whose ribs are of trapezoidal cross section, at least partially embedded in plastic foam. Fretwork extends along the tops of the ribs, transversely or longitudinally thereof. Transversely, the fretwork can be spaced metal straps or wooden slats. Longitudinally, the fretwork can be undulant or twisted metal strips. The fretwork can be embedded in the plastic foam, or can disposed outside and spaced from the plastic foam so as to serve to improve the connection between the construction element and a layer of concrete cast thereon. The construction elements have overlapping edges of reduced thickness into which the metal core extends. The ends of the construction elements have Z-shaped members one wing of which is secured to the core and the other wing of which serves to secure the element to a support.
Inventors
- 👤 Khosrow Shamszadeh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:21
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/02; E04C2/10; E04C2/20; E04C2/205; E04B; E04B5/00; E04B5/16; E04B5/32; E04B5/36; E04B5/38; E04B5/40; E04C2/16; E04C2/18; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/24999
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
97 words
A flat modular construction element comprising a rigid core formed of a ribbed sheet at least partially embedded in an insulating material which is a cellular synthetic resin foam, each face of said element being at least partly formed by said insulating material, and connecting elements extending on at least one face of the ribbed sheet and being secured to the tops of the ribs, said connecting elements being spaced from the insulating material so as to be usable for fixing the construction element to a building structure or for securing finishing elements to said construction element.
Claim 2
Dependent Claim
97 words
A flat modular construction element comprising a rigid core formed of a ribbed sheet at least partially embedded in an insulating material which is a cellular synthetic resin foam, each face of said element being at least partly formed by said insulating material, and connecting elements extending on at least one face of the ribbed sheet and being secured to the tops of the ribs, said connecting elements being spaced from the insulating material so as to be usable for fixing the construction element to a building structure or for securing finishing elements to said construction element.
Claim 3
Dependent Claim
21 words
A construction element as claimed in claim 1, in which said connecting elements extend transversely between the tops of said ribs.
Claim 4
Dependent Claim
21 words
A construction element as claimed in claim 1, in which said connecting elements extend longitudinally along the tops of the ribs.
Claim 5
Dependent Claim
18 words
A construction element as claimed in claim 1 in which said connecting elements are constituted by wooden slats.
Claim 6
Dependent Claim
112 words
A flat modular construction element having opposite major faces and comprising a rigid core formed of a ribbed sheet partially embedded in an insulating material which is a cellular synthetic resin foam, one said major face of said element being entirely formed by said insulating material and the other said major face being comprised partly by the tops of the ribs and partly by said insulating material, and connecting elements extending on said other major face of the ribbed sheet and being secured to the tops of the ribs, said connecting elements being usable for fixing the construction element to a building structure or for securing finishing elements to said construction element.
Claim 7
Dependent Claim
112 words
A flat modular construction element having opposite major faces and comprising a rigid core formed of a ribbed sheet partially embedded in an insulating material which is a cellular synthetic resin foam, one said major face of said element being entirely formed by said insulating material and the other said major face being comprised partly by the tops of the ribs and partly by said insulating material, and connecting elements extending on said other major face of the ribbed sheet and being secured to the tops of the ribs, said connecting elements being usable for fixing the construction element to a building structure or for securing finishing elements to said construction element.
Claim 8
Dependent Claim
17 words
A construction element as claimed in claim 5, said connecting elements being spaced from the insulating material.
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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) | 1988-05-20 | 1988-11-19 | 1989-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-20 | 1992-11-19 | 1993-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-20 | 1996-11-19 | 1997-05-21 | $7700.00 | Window Closed / Lapsed |