US4879855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Attachment and reinforcement member for molded construction forms
Assignee: API ACQUISITION Co LLC
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Filing: 1988-04-20
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Granted: 1989-11-14
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Expires: 2008-04-20
Abstract
Abstract The attachment and reinforcement member for molded construction forms, as embodied herein, has a central portion of expanded webbed steel in which the ends are bent to accommodate covering strips of solid galvanized steel. The invention is embedded in a molded construction form during the form's manufacture. The strips of the solid galvanized steel extend to the outer surfaces of the form and provide attachment surfaces whereas the central portion of expanded steel web reinforces the form. The result is a molded construction form that is stronger, and one that further provides easily locatable embedded attachment surfaces for bracing means during the curing of the concrete and for finishing materials. The molded construction form has a number of galvanized steel strips, preferably ten with five on each outer surface, located at the standard building twelve inch centers, to provide surfaces for attaching any type of wall covering such as sheetrock, siding, paneling, lath for stucco, or brick veneer. These attachment strips also define the location of the vertical cavities and concrete posts within the construction form.
Inventors
- 👤 John L. Berrenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:29
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/84; E04B2/86; E04B2/8611; E04B2/8617
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
89 words
In a molded construction form having two sidewall members of rectangular configuration having horizontal and vertical edges, and each of said members having a respective inner surface and a planar outer surface, comprising in combination: (a) a plurality of cross members of expanded material with at least one angularly extending end, transversely connecting between said sidewall members, and (b) a plurality of attachment surfaces, U-shaped in a side elevation, embracing said angularly extending end, forming a uniform continuous planar surface, coplanar with said outer surface of said sidewall member.
Claim 2
Dependent Claim
89 words
In a molded construction form having two sidewall members of rectangular configuration having horizontal and vertical edges, and each of said members having a respective inner surface and a planar outer surface, comprising in combination: (a) a plurality of cross members of expanded material with at least one angularly extending end, transversely connecting between said sidewall members, and (b) a plurality of attachment surfaces, U-shaped in a side elevation, embracing said angularly extending end, forming a uniform continuous planar surface, coplanar with said outer surface of said sidewall member.
Claim 3
Dependent Claim
18 words
The combination of claim 1, wherein said attachment surfaces are a lighter gage material than said cores members.
Claim 4
Dependent Claim
31 words
The combination of claim 1, wherein said expanded material has rhomboid openings with major and minor axes, and wherein the orientation of each major axis is transverse to said attachment surfaces.
Claim 5
Dependent Claim
23 words
The combination of claim 3, wherein said cross members have two angularly extending ends, and said attachment surfaces embrace said angularly extending ends.
Claim 6
Dependent Claim
62 words
The combination of claim 1, wherein said cross members connect between said sidewall members at each vertical edge and at predetermined distances along the length of said construction form, and wherein said attachment members are located at each lengthwise edge and at predetermined distances along said outer surface to enable mechanical of building materials on said outer surface of said sidewall members.
Claim 7
Dependent Claim
155 words
In a molded construction form having two sidewall members of a rectangular configuration having horizontal and vertical edges, and each of said members having a respective inner surface and a planar outer surface, comprising in combination: (a) a plurality of expanded metal cross members having rhomboid openings with major and minor axes, and two angular extensions, wherein said cross members are embedded in and transversely interconnect said sidewall members; and (b) a plurality of metal attachment surfaces U-shaped in a side elevation embracing said angular extensions of said cross members forming a uniform continuous planar surfaces, in which the orientation of said major axis of rhomboid openings of said expanded metal mesh is substantially transverse to said attachment surfaces, and said attachment surfaces are of a lighter gage metal than said cross members, and said attachment surfaces extend to and are substantially coplanar with said outer surface of said sidewall members in a parallel relationship.
Claim 8
Dependent Claim
155 words
In a molded construction form having two sidewall members of a rectangular configuration having horizontal and vertical edges, and each of said members having a respective inner surface and a planar outer surface, comprising in combination: (a) a plurality of expanded metal cross members having rhomboid openings with major and minor axes, and two angular extensions, wherein said cross members are embedded in and transversely interconnect said sidewall members; and (b) a plurality of metal attachment surfaces U-shaped in a side elevation embracing said angular extensions of said cross members forming a uniform continuous planar surfaces, in which the orientation of said major axis of rhomboid openings of said expanded metal mesh is substantially transverse to said attachment surfaces, and said attachment surfaces are of a lighter gage metal than said cross members, and said attachment surfaces extend to and are substantially coplanar with said outer surface of said sidewall members in a parallel relationship.
Claim 9
Dependent Claim
10 words
The combination of claim 6, wherein said metal is steel.
Claim 10
Dependent Claim
63 words
The combination of claim 6, wherein said cross members interconnect said sidewall members at each vertical edge and at predetermined distances along the length of said construction form, and wherein said attachment members are also located at each lengthwise edge and at predetermined distances along said outer surface to enable mechanical attachment of building materials on said outer surface of said sidewall members.
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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) | 1992-11-13 | 1993-05-15 | 1993-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-13 | 1997-05-15 | 1997-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-13 | 2001-05-15 | 2001-11-14 | $7700.00 | Window Closed / Lapsed |