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US4706429A Expired / Lapsed US ⏱️ 0.0 years remaining

Permanent non-removable insulating type concrete wall forming structure

Assignee: LITE-FORM Inc
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Filing: 1985-11-20
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Granted: 1987-11-17
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Expires: 2005-11-20
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Abstract

Abstract A modular synthetic plastic concrete form structure which comprises a pair of modular concrete impervious forming panels each comprised of a series of modular concrete forming sections stacked on top on one another and also disposed in end-to-end relation. The sections each having means on its upper and lower edges and its opposite vertical edges for interlocking the sections in engagement with one another. The panels each being comprised of a synthetic plastic and the panels are positioned in spaced opposed relation. Tie slots are provided in the opposed sections positioned in longitudinally spaced relation along the upper and lower edges. Synthetic plastic ties are provided with each having opposite enlarged tie ends retainingly engaged in the tie slots securing the sections in opposed spaced relation. Modular transversely extending closure panels are mounted between the opposed panels providing end closures for confining poured concrete within the form defined by the opposed panels and the end closure panels. Modular attachment means are provided between opposed faces of the opposed panels and opposite ends of the closure panels to secure the assemblage in unitary relation to define a concrete form. The reinforcing ties each are secured in permanent embedded assembly at opposite ends with the synthetic plastic opposed panels and also with the concrete when poured and hardened in the thus provided form to provide an insulated concrete wall with the synthetic plastic panels being permanently attached to the exterior of the concrete wall.

Inventors

  • 👤 David A. Young

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-07 14:41
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/84; E04B2/86; E04B2/8635; E04B2/8641; E04B2002/8676

Claims Analysis

Total Claims: 40
Claim 1
Independent Claim 315 words
In a modular synthetic plastic concrete form structure, wherein the improvement comprises a pair of modular concrete impervious forming panels comprised of a series of opposed modular concrete forming sections stacked on top on one another and also disposed in end-to-end relation, the sections each having means on its upper and lower edges and its opposite vertical edges for interlocking the sections in engagement with one another, the panels being positioned in spaced opposed relation, tie slots in the opposed sections positioned in longitudinally spaced rows along the upper and lower edges, synthetic plastic ties arranged in vertically spaced rows along upper and lower edges of the sections, the ties being positioned in vertically spaced horizontally extending rows and the ties having opposite enlarged tie ends retainingly engaged in said tie slots securing the sections in opposed spaced relation, modular transversely extending closure panels mounted between the opposed panels providing end closures for confining poured concrete within the form defined by the opposed panels and the end closure panels, modular attachment means provided between opposed faces of the opposed panels and opposite ends of the closure panels to secure the assemblage in unitary relation to define a concrete form, the ties and the forming sections having heights at substantial variance with respect to one another when said ties are assembled in the rows at upper and lower edges of the forming sections leaving a substantial open area between the upper and lower rows of ties enabling concrete to be rapidly poured between the forming sections with low flow impedance from the ties, the reinforcing ties each being secured in permanent embedded assembly at opposite ends with the synthetic plastic opposed panels and also with the concrete when poured and hardened in the thus provided form to provide an insulated concrete wall with the synthetic plastic panels permanently attached to the exterior of the concrete wall.
Claim 2
Dependent Claim 315 words
In a modular synthetic plastic concrete form structure, wherein the improvement comprises a pair of modular concrete impervious forming panels comprised of a series of opposed modular concrete forming sections stacked on top on one another and also disposed in end-to-end relation, the sections each having means on its upper and lower edges and its opposite vertical edges for interlocking the sections in engagement with one another, the panels being positioned in spaced opposed relation, tie slots in the opposed sections positioned in longitudinally spaced rows along the upper and lower edges, synthetic plastic ties arranged in vertically spaced rows along upper and lower edges of the sections, the ties being positioned in vertically spaced horizontally extending rows and the ties having opposite enlarged tie ends retainingly engaged in said tie slots securing the sections in opposed spaced relation, modular transversely extending closure panels mounted between the opposed panels providing end closures for confining poured concrete within the form defined by the opposed panels and the end closure panels, modular attachment means provided between opposed faces of the opposed panels and opposite ends of the closure panels to secure the assemblage in unitary relation to define a concrete form, the ties and the forming sections having heights at substantial variance with respect to one another when said ties are assembled in the rows at upper and lower edges of the forming sections leaving a substantial open area between the upper and lower rows of ties enabling concrete to be rapidly poured between the forming sections with low flow impedance from the ties, the reinforcing ties each being secured in permanent embedded assembly at opposite ends with the synthetic plastic opposed panels and also with the concrete when poured and hardened in the thus provided form to provide an insulated concrete wall with the synthetic plastic panels permanently attached to the exterior of the concrete wall.
Claim 3
Dependent Claim 43 words
The concrete form structure of claim 1 further characterized by the tie slots being positioned along upper and lower edges of each panel and on its opposite sides an eqidistant modular arrangement so that the panels can be interchangeably used with one another.
Claim 4
Dependent Claim 78 words
The concrete form structure of claim 1 further characterized by each of the ties having angular ends being formed in the shape of a T and with the tie slots also being in the shape of a T so that the T-shaped tie ends can be retainingly engaged in the T-shaped tie slots, all of the tie ends and all of the slots being shaped the same so that the ties and the slots are modular and interchangeable.
Claim 5
Dependent Claim 54 words
The concrete form structure of claim 1 further characterized by the ties each having triangular tie sections joined at apexes of the triangular tie sections, the tie sections each having triangular openings which are disposed in a common vertical plane for permitting concrete to flow freely through the openings when poured into the form.
Claim 6
Dependent Claim 30 words
The form structure of claim 1 where the forming sections and the closure panels are comprised of expanded, closed cell polystyrene having thermal insulation properties having an R-value of 20+.
Claim 7
Dependent Claim 26 words
The form structure of claim 1 further characterized by the modular attachment means comprising complimentarily shaped tongues and grooves slidingly engageable and positioned in locked assembly.
Claim 8
Dependent Claim 48 words
The form structure of claim 1 further characterized by the modular attachment means comprising complimentarily shaped tongues and grooves slidingly engageable and positioned in locked assembly, the tongues and grooves being hook-shaped to resist being pulled apart in a direction at right angles to bottoms of said grooves.
Claim 9
Dependent Claim 31 words
The form structure of claim 1 further characterized by the panel sections each being comprised of expanded, closed cell polystyrene and being 2" thick, 12" high and 20" to 40" long.
Claim 10
Dependent Claim 50 words
The form structure of claim 1 further characterized by opposite vertical edges of each of the sections having vertically extending matching hook-shaped tongues and grooves enabling the sections to be engaged in end-to-end interlocked assembly to prevent disassembly except by sliding the engaged tongues and grooves longitudinally of one another.
Claim 11
Dependent Claim 28 words
The form structure of claim 1 where the forming sections and the closure panels are comprised of expanded, closed cell polystyrene having a density between 1.7 and 2.0.
Claim 12
Dependent Claim 61 words
The concrete form structure of claim 1 further characterized by the forming sections having inner opposing surfaces, the surface being provided with a seriesof vertically extending ribs, ribs being positioned in side by side relation on each surface, and co-acting to create more friction on the inside of the sections as concrete is poured against to hold the form in place.
Claim 13
Dependent Claim 340 words
In a modular synthetic plastic concrete form structure, wherein the improvement comprises a pair of modular concrete impervious forming panels comprised of a series of opposed modular concrete forming sections stacked on top on one another and also disposed in end-to-end relation, the sections each having castellation means on its upper and lower edges for enabling superimposed sections to be press-fitted by hand pressure creating a completely smooth surface enabling the sections to be vertically stacked upon one another in interlocked assembly, the panels each being comprised of a synthetic plastic, the panels being positioned in spaced opposed relation, tie slots in the opposed sections positioned in longitudinally spaced rows along upper and lower edges, synthetic plastic reinforcing form ties arranged in vertically spaced rows along upper and lower edges of the sections, the ties being positioned in vertically spaced horizontally extending rows and the ties having opposite enlarged tie ends retainingly engaged in said tie slots securing the sections in opposed spaced relation, modular transversely extending closure panels mounted between the opposed panels providing end closures for confining poured concrete within the form defined by the opposed panels and the end closure panels, modular attachment means provided between opposed faces of the opposed panels and opposite ends of the closure panels to secure the assemblage in unitary relation to define a concrete form, the ties and the forming sectionss having heights at substantial variance with respect to one another when said ties are assembled in the rows at upper and lower edges of the forming sections leaving a substantial open area between the upper and lower rows of ties enabling concrete to be rapidly poured between the forming sections with low flow impedance from the ties, the reinforcing ties each being secured in permanent embedded assembly at opposite ends with the synthetic plastic opposed panels and also with the concrete when poured and hardened in the thus provided form to provide an insulated concrete wall with the synthetic plastic panels permanently attached to the exterior of the concrete wall.
Claim 14
Dependent Claim 340 words
In a modular synthetic plastic concrete form structure, wherein the improvement comprises a pair of modular concrete impervious forming panels comprised of a series of opposed modular concrete forming sections stacked on top on one another and also disposed in end-to-end relation, the sections each having castellation means on its upper and lower edges for enabling superimposed sections to be press-fitted by hand pressure creating a completely smooth surface enabling the sections to be vertically stacked upon one another in interlocked assembly, the panels each being comprised of a synthetic plastic, the panels being positioned in spaced opposed relation, tie slots in the opposed sections positioned in longitudinally spaced rows along upper and lower edges, synthetic plastic reinforcing form ties arranged in vertically spaced rows along upper and lower edges of the sections, the ties being positioned in vertically spaced horizontally extending rows and the ties having opposite enlarged tie ends retainingly engaged in said tie slots securing the sections in opposed spaced relation, modular transversely extending closure panels mounted between the opposed panels providing end closures for confining poured concrete within the form defined by the opposed panels and the end closure panels, modular attachment means provided between opposed faces of the opposed panels and opposite ends of the closure panels to secure the assemblage in unitary relation to define a concrete form, the ties and the forming sectionss having heights at substantial variance with respect to one another when said ties are assembled in the rows at upper and lower edges of the forming sections leaving a substantial open area between the upper and lower rows of ties enabling concrete to be rapidly poured between the forming sections with low flow impedance from the ties, the reinforcing ties each being secured in permanent embedded assembly at opposite ends with the synthetic plastic opposed panels and also with the concrete when poured and hardened in the thus provided form to provide an insulated concrete wall with the synthetic plastic panels permanently attached to the exterior of the concrete wall.
Claim 15
Dependent Claim 43 words
The concrete form structure of claim 12 further charactrerized by the tie slots being positioned along upper and lower edges of each panel and on its opposite sides an equidistant modular arrangement so that the panels can be interchangeably used with one another.
Claim 16
Dependent Claim 43 words
The concrete form structure of claim 13 further characterized by said means on the upper and lower edges of the panel for interlocking the panel in engagement being modular on each section so that the sections can be interchangeably used with one another.
Claim 17
Dependent Claim 78 words
The concrete form structure of claim 12 further characterized by each of the ties having angular ends being formed in the shape of a T and with the tie slots also being in the shape of a T so that the T-shaped tie ends can be retainingly engaged in the T-shaped tie slots, all of the tie ends and all of the slots being shaped the same so that the ties and the slots are modular and interchangeable.
Claim 18
Dependent Claim 54 words
The concrete form structure of claim 12 further characterized by the ties each having triangular tie sections joined at apexes of the triangular tie sections, the tie sections each having triangular openings which are disposed in a common vertical plane for permitting concrete to flow freely through the openings when poured into the form.
Claim 19
Dependent Claim 30 words
The form structure of claim 12 where the forming sections and the closure panels are comprised of expanded, closed cell polystyrene having thermal insulation properties having an R-value of 20+.
Claim 20
Dependent Claim 48 words
The form structure of claim 12 further characterized by the modular attachment means comprising complimentarily shaped tongues and grooves slidingly engageable and positioned in locked assembly, the tongues and grooves being hook-shaped to resist being pulled apart in a direction at right angles to bottoms of said grooves.
Claim 21
Dependent Claim 54 words
The form structure of claim 12 further characterized by the modular attachment means comprising at least two complimentarily shaped tongues and at least two grooves slidingly engageable and positioned in locked assembly, the tongues and grooves being hook-shaped to resist being pulled apart in a direction at right angles to bottoms of said grooves.
Claim 22
Dependent Claim 83 words
The form structure of claim 12 further characterized by the castellation means each comprising a main parallel sided block integral and a pair of mini-parallel sided blocks projecting from opposite sides of the main parallel sided blocks, which blocks all are integral and are spaced along a top edge of each panel, said castellation means further comprising a series of cavities on a bottom edge of each panel having a configuration generally matching the shape of said blocks for nested press-fitted engagement together.
Claim 23
Dependent Claim 63 words
The form structure of claim 12 further characterized by concrete dam means between the castellation means for enabling the stacked sections to be slightly separated relative to one another without creating a leakage path for concrete to seep through the joint between the longitudinally extending secured edges of the panels, and synthetic plastic concrete ties securing the spaced opposed panels in assembly together.
Claim 24
Dependent Claim 57 words
The form structure of claim 21 further characterized by said dam means comprising a dam block integrally linked at opposite ends to said castellation means in assembly together and a correspondingly shaped dam block cavity, the dam block cavity being shaped for mated press-fitted engagement with the dam block when panels are disposed in superimposed assembly together.
Claim 25
Dependent Claim 224 words
In a modular synthetic plastic concrete form structure, wherein the improvement comprises a pair of modular concrete impervious synthetic plastic forming panels each comprised of a series of opposed modular concrete forming sections stacked on top on one another and also disposed in end-to-end relation, the sections each having longitudinally spaced castellation means including castellation blocks and castellation block receiving cavities on its upper and lower edges along a joint between the sections for enabling superimposed sections to be press-fitted by hand pressure enabling the sections to be vertically stacked upon one another in interlocked assembly, the castellation means having concrete dam means for enabling the stacked sections to be slightly separated relative to one another without creating a leakage path for concrete to seep through the joint between the longitudinally extending edges of the sections, said dam means comprising a dam block integrally linked at opposite ends to said castellation means in assembly together and a correspondingly shaped dam block cavity, the dam block cavity being shaped for mated press-fitted engagement with the dam block when the concrete section forming sections are disposed in superimposed assembly together, the castellation block having a greater height than the dam block to allow stacked sections to separate slightly along said joint and yet prohibit leakage through the joint while the sections are maintained in interlocked assembly.
Claim 26
Dependent Claim 224 words
In a modular synthetic plastic concrete form structure, wherein the improvement comprises a pair of modular concrete impervious synthetic plastic forming panels each comprised of a series of opposed modular concrete forming sections stacked on top on one another and also disposed in end-to-end relation, the sections each having longitudinally spaced castellation means including castellation blocks and castellation block receiving cavities on its upper and lower edges along a joint between the sections for enabling superimposed sections to be press-fitted by hand pressure enabling the sections to be vertically stacked upon one another in interlocked assembly, the castellation means having concrete dam means for enabling the stacked sections to be slightly separated relative to one another without creating a leakage path for concrete to seep through the joint between the longitudinally extending edges of the sections, said dam means comprising a dam block integrally linked at opposite ends to said castellation means in assembly together and a correspondingly shaped dam block cavity, the dam block cavity being shaped for mated press-fitted engagement with the dam block when the concrete section forming sections are disposed in superimposed assembly together, the castellation block having a greater height than the dam block to allow stacked sections to separate slightly along said joint and yet prohibit leakage through the joint while the sections are maintained in interlocked assembly.
Claim 27
Dependent Claim 174 words
In a modular synthetic plastic concrete form structure, wherein the improvement comprises a pair of modular concrete impervious synthetic plastic forming panels comprised of a series of opposed modular concrete forming sections stacked on top on one another and also disposed in end-to-end relation, means securing the sections together, the sections each having longitudinally spaced castellation means on its upper and lower edges for enabling superimposed sections to be press-fitted by hand pressure enabling the sections to be vertically stacked upon one another in interlocked assembly, concrete dam means between the castellation means for enabling the stacked sections to be slightly separated relative to one another without creating a leakage path for concrete to seep through the joint between the longitudinally extending edges of the panels, the castellation means having a greater vertical height than said dam means enabling the sections to separate slightly at a joint between the stacked sections after concrete has been poured into the concrete form structure and with the castellation means continuing to maintain the sections in interlocked assembly.
Claim 28
Dependent Claim 174 words
In a modular synthetic plastic concrete form structure, wherein the improvement comprises a pair of modular concrete impervious synthetic plastic forming panels comprised of a series of opposed modular concrete forming sections stacked on top on one another and also disposed in end-to-end relation, means securing the sections together, the sections each having longitudinally spaced castellation means on its upper and lower edges for enabling superimposed sections to be press-fitted by hand pressure enabling the sections to be vertically stacked upon one another in interlocked assembly, concrete dam means between the castellation means for enabling the stacked sections to be slightly separated relative to one another without creating a leakage path for concrete to seep through the joint between the longitudinally extending edges of the panels, the castellation means having a greater vertical height than said dam means enabling the sections to separate slightly at a joint between the stacked sections after concrete has been poured into the concrete form structure and with the castellation means continuing to maintain the sections in interlocked assembly.
Claim 29
Dependent Claim 151 words
The form structure of claim 24 further characterized by the castellation means each comprising a main parallel sided block and a pair of mini-parallel sided blocks projecting from opposite sides of the main parallel sided blocks, which blocks all are integral and are spaced along a top edge of each panel, said castellation structure further comprising a series of cavities on a bottom edge of each panel having a configuration generally matching the shape of said blocks for nested press-fitted engagement together, said dam means comprising a dam block integrally linked at opposite ends to said main blocks in assembly together and a correspondingly shaped dam block cavity linked and connected to the main block cavities which are positioned at opposite ends of the dam block, the dam block cavity being shaped for mated press-fitted engagement with the dam block when the concrete forming sections are disposed in superimposed assembly together.
Claim 30
Dependent Claim 83 words
The form structure of claim 24 further characterized by said castellation means each comprising a main parallel sided block integral and a pair of mini-parallel sided blocks projecting from opposite sides of the main parallel sided blocks, which blocks all are integral and are spaced along a top edge of each panel, said castellation structure further comprising a series of cavities on a bottom edge of each panel having a configuration generally matching the shape of said blocks for nested press-fitted engagement together.
Claim 31
Dependent Claim 158 words
In a modular synthetic plastic concrete form structure, wherein the improvement comprises a pair of modular concrete impervious synthetic plastic forming panels comprised of a series of opposed modular concrete forming sections stacked on top on one another and also disposed in end-to-end relation, the sections each having longitudinally spaced castellation means on its upper and lower edges for enabling superimposed sections to be press-fitted by hand pressure enabling the sections to be vertically stacked upon one another in interlocked assembly, concrete form ties securing the opposed panels together, the ties each having opposite T-shaped tie ends, longitudinally spaced T-shaped slots provided along upper edges of each of the panels with the T-shaped tie ends received therein, the panels having longitudinally spaced thinner panel areas located just beneath lower ends of said T-shaped slots providing shock absorbing means for enabling the shock received by the ties during a concrete pour to be absorbed by the shock absorbing means.
Claim 32
Dependent Claim 158 words
In a modular synthetic plastic concrete form structure, wherein the improvement comprises a pair of modular concrete impervious synthetic plastic forming panels comprised of a series of opposed modular concrete forming sections stacked on top on one another and also disposed in end-to-end relation, the sections each having longitudinally spaced castellation means on its upper and lower edges for enabling superimposed sections to be press-fitted by hand pressure enabling the sections to be vertically stacked upon one another in interlocked assembly, concrete form ties securing the opposed panels together, the ties each having opposite T-shaped tie ends, longitudinally spaced T-shaped slots provided along upper edges of each of the panels with the T-shaped tie ends received therein, the panels having longitudinally spaced thinner panel areas located just beneath lower ends of said T-shaped slots providing shock absorbing means for enabling the shock received by the ties during a concrete pour to be absorbed by the shock absorbing means.
Claim 33
Dependent Claim 28 words
The form structure of claim 27 where the forming sections and the closure panels are comprised of expanded, closed cell polystyrene having a density between 1.7 and 2.0.
Claim 34
Dependent Claim 317 words
In a modular synthetic plastic concrete form structure, wherein the improvement comprises a pair of modular concrete impervious synthetic plastic forming panels each comprised of a series of opposed modular concrete forming sections stacked on top on one another and also disposed in end-to-end relation, the sections each having longitudinally spaced castellation means including castellation blocks and castellation block receiving cavities on its upper and lower edges along a joint between the sections for enabling superimposed sections to be press-fitted by hand pressure enabling the sections to be vertically stacked upon one another in interlocked assembly, concrete dam means between the castellation means having concrete dam means for enabling the stacked sections to be slightly separated without creating a leakage path for concrete to seep through the joint between the longitudinal secured edges of the panels, synthetic plastic concrete form ties securing the panels in spaced opposed relation, synthetic plastic the ties each having opposite enlarged tie ends retainingly engaged in said tie slots securing the sections in opposed spaced relation, modular transversely extending closure panels mounted between the opposed panels providing end closures for confining poured concrete within the form defined by the opposed panels and the end closure panels, modular attachment means provided between opposed faces of the opposed panels and opposite ends of the closure panels to secure the assemblage in unitary relation to define a concrete form, the reinforcing ties each being secured in permanent embedded assembly at opposite ends with the synthetic plastic opposite panels and also with the concrete when poured and hardened in the thus provided form to provide an insulated concrete wall with the synthetic plastic panels permanently attached to the exterior of the concrete wall, the castellation block having a greater height than the dam block to allow the stacked sections to separate slightly along said joint and yet prohibit leakage while maintaining the sections in interlocked assembly.
Claim 35
Dependent Claim 317 words
In a modular synthetic plastic concrete form structure, wherein the improvement comprises a pair of modular concrete impervious synthetic plastic forming panels each comprised of a series of opposed modular concrete forming sections stacked on top on one another and also disposed in end-to-end relation, the sections each having longitudinally spaced castellation means including castellation blocks and castellation block receiving cavities on its upper and lower edges along a joint between the sections for enabling superimposed sections to be press-fitted by hand pressure enabling the sections to be vertically stacked upon one another in interlocked assembly, concrete dam means between the castellation means having concrete dam means for enabling the stacked sections to be slightly separated without creating a leakage path for concrete to seep through the joint between the longitudinal secured edges of the panels, synthetic plastic concrete form ties securing the panels in spaced opposed relation, synthetic plastic the ties each having opposite enlarged tie ends retainingly engaged in said tie slots securing the sections in opposed spaced relation, modular transversely extending closure panels mounted between the opposed panels providing end closures for confining poured concrete within the form defined by the opposed panels and the end closure panels, modular attachment means provided between opposed faces of the opposed panels and opposite ends of the closure panels to secure the assemblage in unitary relation to define a concrete form, the reinforcing ties each being secured in permanent embedded assembly at opposite ends with the synthetic plastic opposite panels and also with the concrete when poured and hardened in the thus provided form to provide an insulated concrete wall with the synthetic plastic panels permanently attached to the exterior of the concrete wall, the castellation block having a greater height than the dam block to allow the stacked sections to separate slightly along said joint and yet prohibit leakage while maintaining the sections in interlocked assembly.
Claim 36
Dependent Claim 43 words
The concrete form structure of claim 29 further characterized by the tie slots being positioned along upper and lower edges of each panel and on its opposite sides an equidistant modular arrangement so that the panels can be interchangeably used with one another.
Claim 37
Dependent Claim 44 words
The concrete form structure of claim 29 further charaterized by said castellation means on the upper and lower edges of the panel for interlocking the panel in engagement being modular on each section so that the sections can be interchangeably used with one another.
Claim 38
Dependent Claim 235 words
In a modular synthetic plastic concrete form structure, wherein the improvement comprises a pair of modular concrete impervious synethetic plastic forming panels each comprised of a series of opposed modular concrete forming sections stacked on top of another and also disposed in end-to-end relation, the sections each having longitudinally spaced male and female castellation means including castellation blocks and castellation block receiving cavities on its upper and lower edges along a joint between the sections for enabling superimposed sections to be press-fitted by hand pressure enabling the sections to be vertically stacked upon one another in interlocked assembly, the castellation means having concrete dam means for enabling the stacked sections to be slightly separated relative to one another without creating a leakage path for concrete to seep through the joint between the longitudinal extending secured edges of the panels, the dam means comprising a dam block integrally linked at opposite ends to said castellation means and a correspondingly shaped dam block cavity linked and connected to the castellation means which are positioned at opposite ends of the dam block, the dam block cavity being shaped for mated press-fitted engagement with the dam block when panels are disposed in superimposed assembly together, the castellation block having a greater height than the dam block to allow the stacked sections to separate slightly along said joint and yet prohibit leakage while the sections are maintained in interlocked assembly.
Claim 39
Dependent Claim 235 words
In a modular synthetic plastic concrete form structure, wherein the improvement comprises a pair of modular concrete impervious synethetic plastic forming panels each comprised of a series of opposed modular concrete forming sections stacked on top of another and also disposed in end-to-end relation, the sections each having longitudinally spaced male and female castellation means including castellation blocks and castellation block receiving cavities on its upper and lower edges along a joint between the sections for enabling superimposed sections to be press-fitted by hand pressure enabling the sections to be vertically stacked upon one another in interlocked assembly, the castellation means having concrete dam means for enabling the stacked sections to be slightly separated relative to one another without creating a leakage path for concrete to seep through the joint between the longitudinal extending secured edges of the panels, the dam means comprising a dam block integrally linked at opposite ends to said castellation means and a correspondingly shaped dam block cavity linked and connected to the castellation means which are positioned at opposite ends of the dam block, the dam block cavity being shaped for mated press-fitted engagement with the dam block when panels are disposed in superimposed assembly together, the castellation block having a greater height than the dam block to allow the stacked sections to separate slightly along said joint and yet prohibit leakage while the sections are maintained in interlocked assembly.
Claim 40
Dependent Claim 100 words
The form structure of claim 32 further characterized by said castellation means each comprising a main parallel sided block integral and a pair of mini-parallel side blocks projecting from opposite sides of the main parallel side blocks, which blocks all are integral and are spaced along a top edge of each panel, said castellation structure further comprising a series of cavities on a bottom edge of each panel having a configuration generally matching the shape of said blocks for nested press-fitted engagement together, the cavities when set on a foundation acting like suction cups to anchor the associated panel thereto.

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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) 1990-11-16 1991-05-18 1991-11-17 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1994-11-16 1995-05-18 1995-11-17 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1998-11-16 1999-05-18 1999-11-17 $7700.00 Window Closed / Lapsed

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