US4751803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prefabricated concrete wall structure
Assignee: SWA HOLDING COMPANY Inc
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Filing: 1986-04-21
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Granted: 1988-06-21
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Expires: 2006-04-21
Abstract
Abstract A new method of construction for concrete wall structures. Precast concrete studs with fasteners protruding from one edge are used to build the framework of the walls while oriented in a horizontal plane, rigid sheet insulation is attached to the outside of the concrete studs, and wire mesh is laid upon the sheet insulation. Concrete is then poured onto the insulation, the wire and the protruding fasteners to form a continuous waterproof outer surface. New top and bottom beams which are bonded to the concrete studs are formed at the same time as the outer concrete surface. After setting of the concrete, the wall is one integral concrete structure which may be transported to a construction site for erection.
Inventors
- 👤 Melvin M. Zimmerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:28
CPC Classifications
B; B28; B28B; B28B19/00; B28B19/003
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
139 words
A wall structure comprising: a base concrete beam located in essentially a horizontal plane; vertical concrete studs, their lengths oriented vertically and their bottom ends interlocked with and spaced along the base stud, each concrete stud including an attachment strip attached to its edge which is on the inside surface of the wall structure and fasteners attached to and protruding from the edge which is on the outside surface of the wall structure; a concrete top beam interlocked with the top ends of the vertical studs, located in an essentially horizontal plane; rigid insulation attached to the outside edge of the concrete studs by being pierced by the fasteners attached to the edges of the concrete studs; and a layer of poured concrete attached to the surface formed by the insulation, the concrete enclosing the insulation and the fasteners.
Claim 2
Dependent Claim
139 words
A wall structure comprising: a base concrete beam located in essentially a horizontal plane; vertical concrete studs, their lengths oriented vertically and their bottom ends interlocked with and spaced along the base stud, each concrete stud including an attachment strip attached to its edge which is on the inside surface of the wall structure and fasteners attached to and protruding from the edge which is on the outside surface of the wall structure; a concrete top beam interlocked with the top ends of the vertical studs, located in an essentially horizontal plane; rigid insulation attached to the outside edge of the concrete studs by being pierced by the fasteners attached to the edges of the concrete studs; and a layer of poured concrete attached to the surface formed by the insulation, the concrete enclosing the insulation and the fasteners.
Claim 3
Dependent Claim
18 words
The wall structure of claim 1, wherein the layer of concrete covers essentially the entire exterior wall surface.
Claim 4
Dependent Claim
16 words
The wall structure of claim 1 wherein the concrete studs include through holes across their thickness.
Claim 5
Dependent Claim
24 words
The wall structure of claim 1 wherein the layer of poured concrete is integral with the base concrete beam and the concrete top beam.
Claim 6
Dependent Claim
21 words
The wall structure of claim 1 further including through holes across the thickness of the top beam and the base beam.
Claim 7
Dependent Claim
22 words
The wall structure of claim 1 further including attachment means cast into the concrete top beam, for attaching several wall sections together.
Claim 8
Dependent Claim
36 words
The wall structure of claim 6 wherein the attachment means comprises a box structure which permits the insertion of a connecting means after construction of the wall section is completed to hold adjacent wall sections together.
Claim 9
Dependent Claim
31 words
The wall section of claim 1 wherein the base beam and the top beam are formed with angular ends to facilitate forming a corner by attaching two such angled ends together.
Claim 10
Dependent Claim
16 words
The wall section of claim 1 further including reinforcing means within the layer of poured concrete.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-06-21 | 1991-12-21 | 1992-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-21 | 1995-12-21 | 1996-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-21 | 1999-12-21 | 2000-06-21 | $7700.00 | Window Closed / Lapsed |