Patent US4731971A successfully refreshed from Google Patents.
US4731971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Large-panel component for buildings
Assignee: RASTRA HOLDING LLC
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Filing: 1987-03-23
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Granted: 1988-03-22
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Expires: 2007-03-23
Abstract
Abstract In the case of a large-panel component for buildings--which comprises at least two strip-shaped, juxtaposed panel elements made of light-weight concrete, said panel elements being provided with cavities which cross each other in the plane of the wall and with at least one semi-cavity which is provided on at least one end face and connection side, respectively, and said cavities forming a network and being adapted to be filled with cast concrete--the semi-panels defining the panel elements are provided with at least one semi-cavity, which extends in the longitudinal direction of said semi-panels, and with quarter-cavities, which extend parallel to said semi-cavity, both type of cavities being provided on the end faces and connection sides, respectively, of said semi-panels, and several semi-panels being interconnected, e.g. by glueing, such that they overlap one another in the longitudinal direction or, selectively, at least part of the cavities of the panel component being provided with a reinforcement in the manufacturing plant.
Inventors
- 👤 Hans-Ulrich Terkl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:05
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/30; E04C2/40
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
208 words
A method of constructing building walls and the like comprising the steps of: (a) forming a plurality of lightweight rectangularly-shaped panels constructed using a mixture of polystyrene and concrete, one surface of said panels having a plurality of evenly spaced vertical semicircular cavities extending in parallel across the length dimension of said panel, the outermost cavities comprising quartercircular cavities; and further horizontal semicircular cavities extending along the same surface in a spaced and parallel relation across the width dimension of the panel, (b) inserting reinforcing bars in a plurality of said semicircular cavities on said at least one of said panels, (c) bonding a pair of said panels in facing alignment such that each panel's horizontal and vertical semicircular cavities are aligned to form a plurality of circular cavities, (d) bonding a plurality of said pairs of panels in end-to-end alignment such that said horiontal cavities are in communicating relation with each other to form a large panel component, (e) cutting an opening in said large panel component, said opening being of predetermined dimensions, (f) covering on all lateral cut surfaces of said opening, (g) transporting said large panel component to a construction site, and (h) pouring concrete into said horizontal and vertical cavities at said construction site.
Claim 2
Independent Claim
208 words
A method of constructing building walls and the like comprising the steps of: (a) forming a plurality of lightweight rectangularly-shaped panels constructed using a mixture of polystyrene and concrete, one surface of said panels having a plurality of evenly spaced vertical semicircular cavities extending in parallel across the length dimension of said panel, the outermost cavities comprising quartercircular cavities; and further horizontal semicircular cavities extending along the same surface in a spaced and parallel relation across the width dimension of the panel, (b) inserting reinforcing bars in a plurality of said semicircular cavities on said at least one of said panels, (c) bonding a pair of said panels in facing alignment such that each panel's horizontal and vertical semicircular cavities are aligned to form a plurality of circular cavities, (d) bonding a plurality of said pairs of panels in end-to-end alignment such that said horiontal cavities are in communicating relation with each other to form a large panel component, (e) cutting an opening in said large panel component, said opening being of predetermined dimensions, (f) covering on all lateral cut surfaces of said opening, (g) transporting said large panel component to a construction site, and (h) pouring concrete into said horizontal and vertical cavities at said construction site.
Claim 3
Dependent Claim
23 words
The method of constructing building walls of claim 1, wherein said reinforcing bars are inserted into both the horizontal and vertical semicircular cavities.
Claim 4
Dependent Claim
40 words
The method of constructing building walls of claim 1, wherein said opening comprises of a blind opening having transverse slots across the width dimension of one or more panels, the depth of such slot extending at least through said cavities.
Claim 5
Dependent Claim
46 words
The method of constructing a building wall of claim 3, wherein said blind opening further comprises a V-shaped slot beneath said transverse slot, said V-shaped slot extending across the width dimension of one or more panels and having a depth extending at least into said cavities.
Claim 6
Dependent Claim
36 words
The method of constructing a building wall of claim 1, wherein spacers are attached to said reinforcing bar in contacting relation with said circular cavities so as to center said reinforcing bars in said circular cavities.
Claim 7
Dependent Claim
33 words
The method of constructing a building wall of claim 1, wherein said spacers further comprise a star-shaped structure which is attached to said reinforcing bars and said spacers having radial segments projecting therefrom.
Claim 8
Dependent Claim
51 words
The method of constructing a building wall of claim 1, wherein said pair of panels are bonded in an overlapping alignment such that successive pairs of bonded panels are arranged successively in a nonaligned manner and said bonded pair of panels extending beyond the side edge of the opposite paired panel.
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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) | 1991-03-22 | 1991-09-21 | 1992-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-22 | 1995-09-21 | 1996-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-22 | 1999-09-21 | 2000-03-22 | $7700.00 | Window Closed / Lapsed |