CA2292865C - Concrete wall form and connectors therefor - Google Patents
Concrete wall form and connectors therefor Download PDFInfo
- Publication number
- CA2292865C CA2292865C CA 2292865 CA2292865A CA2292865C CA 2292865 C CA2292865 C CA 2292865C CA 2292865 CA2292865 CA 2292865 CA 2292865 A CA2292865 A CA 2292865A CA 2292865 C CA2292865 C CA 2292865C
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- Canada
- Prior art keywords
- knuckles
- web member
- connector
- foam
- anchor
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/84—Walls made by casting, pouring, or tamping in situ
- E04B2/86—Walls made by casting, pouring, or tamping in situ made in permanent forms
- E04B2/8635—Walls made by casting, pouring, or tamping in situ made in permanent forms with ties attached to the inner faces of the forms
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/84—Walls made by casting, pouring, or tamping in situ
- E04B2/86—Walls made by casting, pouring, or tamping in situ made in permanent forms
- E04B2/8611—Walls made by casting, pouring, or tamping in situ made in permanent forms with spacers being embedded in at least one form leaf
- E04B2/8617—Walls made by casting, pouring, or tamping in situ made in permanent forms with spacers being embedded in at least one form leaf with spacers being embedded in both form leaves
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Piles And Underground Anchors (AREA)
- Load-Bearing And Curtain Walls (AREA)
Abstract
A connector for tying together opposed foam panels in spaced and parall el relationship to make a form for receiving flowable material is disclosed. Th e connector comprises a pair of anchor members, one being devised to be embedded in one of the foam panels and the other being devised to be embedded in the other one of the foam panels. Each of these anchor members has a projecting end devised to come out of the foam panel once the anchor member is embedded therein. The connector further comprises a web member extending between the foam panels. The web member has opposite longitudinal side ends, each of the side ends being hingedly connectable to the projectin g end of either one of the anchor members. Thanks to such a connector, the tie d foam panels of the form wall assembly are movable between an extended position where the foam panels are spaced-apart to make the form and a collapsed position where the foam panels are brought close to each other for transportation purposes. Advantageously, a wall form made using such connectors can be pre-assembled at the factory and is as easy to ship to the site of construction as disassembled wall forms.
Description
CONCRETE WALL FORM AND CONNECTORS THEREFOR
FIELD OF THE INVENTION
The present invention relates generally to wall forms of the type comprising pairs of opposed form walls each formed of a plurality of stacked rows of plastic foam panels for receiving flowable materials such as concrete. More particularly, it relates to connectors used to maintain said form walls in spaced and parallel relationship.
BACKGROUND OF THE INVENTION
A number of different systems and methods currently exist for making insulating forms for casting a concrete wall. Often, these systems comprise pairs of opposed foam panels generally made of a rigid foam like polystyrene which define concrete-receiving cavities therebetween. Once the concrete is solidified, the form walls remain in place to insulate the wall. Those form walls are typically maintained in spaced and parallel relationship before the pouring of concrete by means of connectors comprising a pair of parallel lateral attachment flanges each embedded in one of the two opposed foam panels, and a connecting web interconnecting the flanges.
Known concrete forms with the desirable rigidity are conventionally manufactured in the factory and are then shipped on the site of construction to be installed onto the ground to be treated with the inherent risk of damage during transportation or installation, particularly, since known pre-assembled form walls are fragile due to the important empty volume existing between the form walls.
In other conventional methods, forms satisfying the requirements of rigidity are installed directly on the site. However, they are complex and expensive, since the numerous components of the latter forms render assembly time consuming.
FIELD OF THE INVENTION
The present invention relates generally to wall forms of the type comprising pairs of opposed form walls each formed of a plurality of stacked rows of plastic foam panels for receiving flowable materials such as concrete. More particularly, it relates to connectors used to maintain said form walls in spaced and parallel relationship.
BACKGROUND OF THE INVENTION
A number of different systems and methods currently exist for making insulating forms for casting a concrete wall. Often, these systems comprise pairs of opposed foam panels generally made of a rigid foam like polystyrene which define concrete-receiving cavities therebetween. Once the concrete is solidified, the form walls remain in place to insulate the wall. Those form walls are typically maintained in spaced and parallel relationship before the pouring of concrete by means of connectors comprising a pair of parallel lateral attachment flanges each embedded in one of the two opposed foam panels, and a connecting web interconnecting the flanges.
Known concrete forms with the desirable rigidity are conventionally manufactured in the factory and are then shipped on the site of construction to be installed onto the ground to be treated with the inherent risk of damage during transportation or installation, particularly, since known pre-assembled form walls are fragile due to the important empty volume existing between the form walls.
In other conventional methods, forms satisfying the requirements of rigidity are installed directly on the site. However, they are complex and expensive, since the numerous components of the latter forms render assembly time consuming.
2 The following documents disclose examples of different prior art concrete forming systems: US patent nos 5,459,971; 5,625,989; 5,709,060; 5,704,180;
5,701,710; 4,730,422; 5,065,561; 5,740,648; 5,657,600.
There is still presently a need for a wall form that will be easy to handle, to ship and to instal! on the site of construction and that will be low in cost.
SUMMARY OF THE INVENTION
An object of the present invention is to propose a wall form assembly that will satisfy the above-mentioned need, and more particularly to propose connectors therefor which overcome the drawbacks of the presently available methods and apparatus for making wall forms.
A further object is to provide a wall form which can be completely pre-assembled at the factory and v~ihich is as easy to transport to the site of construction as disassembled prior art wall forms.
In accordance with the present invention, these objects are achieved with a connector for tying together opposed foam panels in spaced and parallel relationship to make a form for receiving flowable material. The connector includes first and second anchor members, one being devised to be embedded in one of the foam panels, and the other being devised to be embedded in the other one of the foam panels. Each anchor member has an elongated flange plate for extending longitudinally and deep inside the foam panel, and an elongated link element connected longitudinally to the flange plate. The elongated link element has a projecting end devised to come out of the foam panel . once the anchor member is embedded therein, the projecting end including a stabilising plate parallel to the flange plate for extending flush with an inner surface of the foam panel. The connector further includes a web member .
for extending between the foam panels, the web member having opposite longitudinal first and second side ends. Hinge assemblies connecting the first
5,701,710; 4,730,422; 5,065,561; 5,740,648; 5,657,600.
There is still presently a need for a wall form that will be easy to handle, to ship and to instal! on the site of construction and that will be low in cost.
SUMMARY OF THE INVENTION
An object of the present invention is to propose a wall form assembly that will satisfy the above-mentioned need, and more particularly to propose connectors therefor which overcome the drawbacks of the presently available methods and apparatus for making wall forms.
A further object is to provide a wall form which can be completely pre-assembled at the factory and v~ihich is as easy to transport to the site of construction as disassembled prior art wall forms.
In accordance with the present invention, these objects are achieved with a connector for tying together opposed foam panels in spaced and parallel relationship to make a form for receiving flowable material. The connector includes first and second anchor members, one being devised to be embedded in one of the foam panels, and the other being devised to be embedded in the other one of the foam panels. Each anchor member has an elongated flange plate for extending longitudinally and deep inside the foam panel, and an elongated link element connected longitudinally to the flange plate. The elongated link element has a projecting end devised to come out of the foam panel . once the anchor member is embedded therein, the projecting end including a stabilising plate parallel to the flange plate for extending flush with an inner surface of the foam panel. The connector further includes a web member .
for extending between the foam panels, the web member having opposite longitudinal first and second side ends. Hinge assemblies connecting the first
3 second the side ends of the web member to the stabilising plate of the first and second anchor members, respectively, are finally provided. Each of the hinge assemblies includes a hinge frame projecting from one of the stabilising plate or the side end of the web member, and defining a longitudinal pivot axis, and a pivoting structure disposed longitudinally on the other one of the stabilising plate or the side end of the web member. The pivoting structure is connected to the hinge frame so as to be rotatable about the pivot axis, thereby allowing the web member and anchor members to pivot with respect to each other.
Preferably, the hinge frame includes at least one pivot pin extending along the longitudinal pivot axis.
In a first preferred embodiment, the hinge frame includes a plurality of aligned open slotted tube-like knuckles, each tube-like knuckle forming an inner tube having a pair of longitudinal opposed edge portions defining a slot in registry with the slots of the other knuckles. Additionally, the pivoting structure includes an enlarged end portion sized to be slidingly insertable in the open tube-like knuckles and a strip portion connecting the enlarged end portion to the other one of the stabilising plate and side end of the web member. The strip portion has a width sized so the strip portion is slidingly insertable in the slots of the knuckles and including a plurality of aligned slits each adapted to receive an edge portion of the knuckles.
in a second preferred embodiment, the hinge frame includes a plurality of connecting elements, each connecting element having one of the longitudinally extending pivot pin. The pivoting structure includes a plurality of arms cooperating with each of the connecting elements, each arm having an extremity pivotally connected to the pivot pin of a corresponding connecting element so as to be rotatable around an said longitudinal pivot axis. Preferably, each connecting element includes two aligned and spaced ridges between which the pivot pin of the respective connecting element is extending, and the extremity of
Preferably, the hinge frame includes at least one pivot pin extending along the longitudinal pivot axis.
In a first preferred embodiment, the hinge frame includes a plurality of aligned open slotted tube-like knuckles, each tube-like knuckle forming an inner tube having a pair of longitudinal opposed edge portions defining a slot in registry with the slots of the other knuckles. Additionally, the pivoting structure includes an enlarged end portion sized to be slidingly insertable in the open tube-like knuckles and a strip portion connecting the enlarged end portion to the other one of the stabilising plate and side end of the web member. The strip portion has a width sized so the strip portion is slidingly insertable in the slots of the knuckles and including a plurality of aligned slits each adapted to receive an edge portion of the knuckles.
in a second preferred embodiment, the hinge frame includes a plurality of connecting elements, each connecting element having one of the longitudinally extending pivot pin. The pivoting structure includes a plurality of arms cooperating with each of the connecting elements, each arm having an extremity pivotally connected to the pivot pin of a corresponding connecting element so as to be rotatable around an said longitudinal pivot axis. Preferably, each connecting element includes two aligned and spaced ridges between which the pivot pin of the respective connecting element is extending, and the extremity of
4 each arm of the pivoting structure has a bore therein .in which the pivot pin is extending.
The present invention is also directed to a form wall assembly to make a form for receiving flowable material, the form wall assembly comprising:
- a first and a second opposed foam panels in spaced and parallel relationship; and - a plurality of connectors tying together said first and second foam panels, each connector comprising:
- first and second anchor members, a first one embedded in the first foam panel and the second one embedded in the second foam panel, each anchor member having:
- an elongated flange plate for extending longitudinally and deep inside the foam panel; and - an elongated link element connected longitudinally to the flange plate and having a projecting end devised to come out of the foam panel once the anchor member is embedded therein, said projecting end comprising a stabilising plate parallel to the flange plate for extending flush with an inner surface of the foam panel;
- a web member for extending between said foam panels, the web member having opposite longitudinal first and second side ends; and - hinge assemblies connecting the first and second side ends of. the web member to the stabilising plate of the first and second anchor members, respectively, each of said hinge assemblies comprising:
- a hinge frame projecting from one of the stabilising plate or the side end of the web member and defining a longitudinal pivot axis; and.
- a pivoting structure disposed longitudinally on the other one of said stabilising plate or said side end of the web member, said pivoting structure being connected to the hinge frame so as to be rotatable about said pivot axis, thereby allowing the web member and anchor members to pivot with respect to each other; whereby the tied foam panels are movable between an extended position where the foam panels are spaced-apart to make the form and a collapsed position where the foam panels are brought close to each other.
A wall form assembly according to the present invention can be easily manufactured, compacted and stored without requiring a lot of space or transported to the site of construction. Due to the relatively light weight of the material used for the manufacture of the elements of the wall form assembly and due to the fact that these elements can be packed in a compact form, a wall form assembly according to the present invention is a lot less fragile during shipping than prior art pre-assembled wall forms, the freight costs for transportation are significantly reduced and the time required to install the form on the site is also significantly reduced as the form is already assembled.
Other features and objects of the present invention will become more apparent from the description that follows of preferred embodiments thereof, having reference to the appended drawings and given as examples only as to how the invention may be put into practice.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a perspective fragmentary view of a form wall assembly according to a firet nrcfcrrcrl orr,F,nrlirr,er.W ,f fhea r~rr~n~,rol~ i~namr~i:..r...
Figure 2 is a top view of the left side foam panel of the form wall assembly of figure 1 showing the relief of the top surface of the foam panel;
Figure 3 is a cross-sectional side elevational view of the form wall assembly of figure 1 showing also an upper and a lower row of stacked foam panels;
Figure 4 is a perspective view of the connector shown in figure 3 without its right anchor member;
Figure 5 is a perspective view of a pre-assembled form wall assembly substantially similar to the form wall assembly of figures 1 and 3, and showing the foam panels in an extended position;
Figure 6 is a top view of the form wall assembly of figure 5 showing the panels folded on each other for transportation purposes;
Figure 7 is a side elevation view of the web member of the connector of figure 1;
Figure 8 is a top view of the web member of figure 7;
Figure 9A is an enlarged top view of a joint between a web member and an anchor member in an extended position;
Figure 9B is the same view as in figure 9A showing the joint in a compacted position;
Figure 10A is a perspective view of two mating anchor members showing the fastener provided at the end portion of the stabilising plate;
Figure 10B is the same view as figure 10A showing the two anchor members linked together;
6a Figure 11 is a perspective view of a connector according to a second preferred embodiment of the invention, shown without its right anchor member and a portion of the web member; and Figure 12 is a side elevation view in partial transparency of a portion of the connector of figure 11.
DESCRIPTION OF A PREFERRED EMBODIMENT
Referring to figure 1, a form wall assembly (10) according to the present invention is suitable to make a form for receiving flowable material such as concrete. The form obtained is of the type comprising a plurality of stacked horizontal rows of coplanar substantially rectangular foamed plastic panels (14) abutting one another along horizontal and vertical edges thereof, as shown in figure 3. More particularly, the form wall assembly (10) comprises a first foam panel (14a) opposed to a second foam panel (14b) in spaced and parallel relationship, and tied together by means of a plurality of connectors (16), as best seen in figure 5.
The foam panels (14) each have a top surtace (15) opposite a bottom surface (17) and, as illustrated in figures 1 and 2, each of the top surface (15) and the bottom surface (17) have a checkerboard-type relief including alternating protrusions (18) and cavities (19). The checkerboard-type relief of the top surface (15) is in mirror symmetry with the checkerboard-type relief of the bottom surface (17) such that the top surface (15) is adapted to fit together with the bottom surface (17) of an upwardly adjacent similar foam panel (14), as shown in figure 5, and the bottom surface (17) is adapted to fit together with a downwardly adjacent similar foam panel (14).
Referring now to figures 3 and 4, each connector (16) comprises a pair of anchor members (20a, 20b), a first one (20a) embedded in the first foam panel (14a) and the second one (20b) embedded in the second foam panel (14b).
Each anchor member (20) has an elongated flange plate (22) extending longitudinally and deep inside the foam panel (14) and an elongated link element (24) connected longitudinally to the flange plate (22) and having a projecting end (26) coming out of the foam panel (14). Preferably, the projecting end (26) of each anchor member (20) comprises a stabilising plate (28) parallel to the flange plate (22) and extending flush with the inner surface (30) of the foam panel (14).
In order to lighten the foam panel assembly, the link element (24) comprises a plurality of holes (25) therealong. However, the link element might have been solid.
It has to be noted that by saying that the anchor member is embedded in the foam panel, a person in the art will understand that in the making of the foam panel (14) in the manufacturing plant, the plastic foam material forming the panel (14) is injected to surround the anchor member (20), thereby strengthening the joint between the panel (14) and the anchor member (20) which thus act as an anchor forming part of the foam panel (14). More specifically and as best seen in figure 3, the plastic foam material, which is preferably a polystyrene, is injected to surround the anchor member (20) such that the stabilising plate (28) of the anchor member (20) is flush with the inner surface (30) of the foam panel (14).
Referring also to figure 7, the connector (16) further comprises a web member (32) extending between the foam panels (14). The web member (32) which is preferably made of a relatively flexible plastic comprises a central portion (44) having a shape adapted to receive and hold metal rods used to reinforce the concrete. The web member (32) further has a first longitudinal side end (34a) hingedly connected to the projecting end (26) of the first anchor member (20a) and a second longitudinal side end (34b) opposed to the first longitudinal side end (34a). The second longitudinal side end (34b) is hingedly connected to the projecting end (26) of the second web member (20b). The foam panels (14) are movable between an extended position, as shown in figure 5, where the foam panels (14) are spaced-apart to make the form and a collapsed position, as shown in figure 6, where the foam panels (14) are brought close to each other.
According to a first preferred embodiment of the invention, in order to hingedly connect the web member (32) to the anchor members (20), the connector (16) preferably comprises a plurality of aligned open slotted tube-like knuckles (36) positioned on the stabilising plate (28), as shown in figure 4, defining a hinge frame, which hingedly cooperate with a pivoting structure embodied by an enlarged end portion (37) of the web member (32). As best seen in figures 9A
and 9B, each tube-like knuckle (36) forms an inner tube ~(38) having a pair of longitudinal opposed edge portions (40) defining a slot (42) in registry with the slots of the other knuckles, as shown in figure 4. Each longitudinal side end (34) of the web member (32) defines the enlarged end portion (37) which is sized to be slidingly insertable in the open tube-like knuckles (36). Referring to figures 9A
and 9B, each longitudinal side end (34) of the web member (32) further defines a strip portion (43) connecting the enlarged end portion (37) to a central portion (44) of the web member (32). The width of the strip portion (43) is such that the strip portion (43) is slidingly insertable in the slots (42) of the anchor members (20). As best seen in figure 4 or 7, the strip portion (43) also includes a plurality of aligned slits (46) each adapted to receive an edge portion (40) of the knuckles (36) to thereby allow the web member (32) and the anchor member (20) to pivot with respect to each other, as shown in figures 9A and 9B. Preferably, the enlarged end portion (37) is also provided therealong with a plurality of small holes (39) to lighten the web member (32). As can be appreciated, the preferred embodiment of the present invention 'illustrated comprises six of those knuckles (36) on each anchor member (20) having six corresponding slits (46) provided on the web member (32). Another embodiment of the present invention may have a different number of those knuckles and slits.
The inner tube (38) and the enlarged end portion (37) may have a circular shape. However, as illustrated in figures 8, 9A and 9B, in order to prevent the panels (14) from moving like a jumping jack during the shipping .or the installation on the site, the inner tube (38) and the enlarged end portion (37), which are preferably made of a slightly flexible plastic, preferably have a shape which allows those elements to be somewhat locked in the extended or collapsed position. More preferably, the inner tube (38) and the enlarged end portion (37) both have a rectangular section with rounded corners. As can be appreciated, that particular shape prevents the enlarged end portion (37) from pivoting freely in the inner tube (38) of the knuckle (36). Therefore, a certain force has to be applied to the assembly to bring if from the collapsed position, as in figure 6, to the extended position, as in figure 1 or 5, or vice versa.
Referring more particularly to figure 7, the connector (16) preferably comprises a stopper (48) to prevent the web member (32) from sliding out upwardly or downwardly of the knuckles (36) of the anchor member (20). More preferably , 10 each enlarged end portion (37) of the web member (32) has an upper extremity portion (50) and a lower extremity portion (52) both comprising a biasing stopper (48) to prevent the side end (34) from sliding out of the tube-like knuckles (36) once inserted therein. The biasing stopper (48) comprises an elongated leaf element (49) with a first end (51) secured to the extremity portion (52) and a free second end (53) pointing opposite the extremity (52). The leaf element (49) is pivotable around the first end (51) thereof between a compressed position where the leaf element (49) is brought close along the outer surface of the enlarged portion (37) to let the knuckles (36) of an anchor member (20) slide over and a relaxed position, as shown in figure 7, where the second end (53) biases away from the outer surface of the enlarged portion (37) to prevent the knuckles (36) from coming out.
Referring to figures 11 and 12, an alternative manner to hingedly connect the web member (32) to the anchor members (20) is illustrated. In accordance with this second embodiment, the hinge frame is embodied by a plurality of connecting elements (64) disposed on the stabilising plate (28) of the projecting end (26) of each anchor member (20). Each of these connecting elements (64) is shaped to form two aligned ridges (66) projecting-from the stabilising plate (28), and the space between them defined a longitudinal sleeve (68). A joining pin (70) can be mounted in the sleeve (68). Preferably, in receiving holes (71 ) are provided in the ridges (66) for this purpose, each hole (71) facing inwardly of .
the sleeve (68).
To cooperate with the connecting elements (64), each longitudinal side end (34a, 34b) of the web member (32) defines a corresponding number of arms (72) which form a pivoting structure. Each arm (72) has an extremity (74) connectable to a corresponding joining pin (70) so as to be rotatable around an axis defined by the joining pin (70). It can be easily seen that this purpose may be achieved by either mounting the extremity (74) of the arm {72) rotatably around the joining pin (70), or mounting the joining pin (70) itself rotatably in the pin receiving holes (71 ). Preferably, the extremity (74) of each arm (72) is provided with a bore (76) for receiving one of the pins (70).
As would be readily understood by a person skilled in the art, the connecting elements (64) may be formed directly by molding during manufacturing of the anchor member (20). In the illustrated embodiment of figures 11 and 12, a protrusion (78) is generated by the molding process on each side of the ridges (66). In the case of corners of a wall where adjacent panels are mounted perpendicularly to each other and where obviously no web member is provided with the connectors, these protrusions, which are embedded in the concrete with the ridges, have the additional advantage of serving as anchor means for the flanges of the connector in which screws could be inserted to fix, for example, a plasterboard wall thereto.
Referring'to figures 3, 4, 10A and 10B, the stabilising plate (28) of each anchor member (20) preferably comprises an upper end (54) and a lower end (56) both comprising a fastener (58) to link the anchor member {20) to a mating anchor member (20), as best seen in figures 10A and 10B. More preferably, the fastener (58) is a grapnel-type fastener molded on the stabilising plate (28) with an extremity (60) projecting from.the corresponding end of the stabilising plate (28). As best seen in figures 10A and 1 OB, the fastener (58) of the upper end (54) of a single stabilising plate (28) is in mirror symmetry with the fastener (58) of the lower end (56) of that stabilising plate (28) and comprises a side (62) provided with three pointed teeth (64) adapted to link with the pointed teeth (64) of a mating anchor member (20). Of course, although three pointed teeth (64) are shown here, any other number of such teeth (64) could be provided as needed, Advantageously, a plurality of teeth (64) is provided to allow an adjustment of the mating between adjoining anchor members (20) by selecting a particular teeth (64) on each fastener (58) for linking with the opposed fastener (58).
Therefore, thanks to both the checkerboard-type relief of the top and bottom surfaces of the panels (14) and the fasteners (58), the wall form assemblies according to the illustrated preferred embodiment of the present invention can be easily stacked over each other and linked together, as shown in figure 3.
Referring more particularly to figure 1, each fastener (58) of a foam panel (14) is preferably sized so the extremity (60) thereof is flush with either the top surface (15) or the bottom surface (17) of the foam panel (14) to prevent that fastener (58) from being in the way.
As can be appreciated from figures 5 and 6, thanks to the specific characteristics of the connector (18) according to the present invention, the panels (14) once tied with the help of those connectors (18) are easily foldable with respect to one another and thus can be shipped to the site of construction in a well compacted form.
Once a form for receiving flowable material is mounted using a plurality of stacked horizontal rows of form wall assemblies, the empty cavity (64) existing between the form wall made of isolating and rigid panels (14) is filled with concrete or with cement based grout. After hardening of the filling material, a composite wall is obtained with the isolating panels firmly attached through the connectors to the concrete inside-wall.
Although preferred embodiments of the invention have been described in detail herein and illustrated in the accompanying drawings, it is to be understood that the invention is not limited to those precise embodiments and that various changes and modifications may be effected therein without departing from the scope or spirit of the invention.
The present invention is also directed to a form wall assembly to make a form for receiving flowable material, the form wall assembly comprising:
- a first and a second opposed foam panels in spaced and parallel relationship; and - a plurality of connectors tying together said first and second foam panels, each connector comprising:
- first and second anchor members, a first one embedded in the first foam panel and the second one embedded in the second foam panel, each anchor member having:
- an elongated flange plate for extending longitudinally and deep inside the foam panel; and - an elongated link element connected longitudinally to the flange plate and having a projecting end devised to come out of the foam panel once the anchor member is embedded therein, said projecting end comprising a stabilising plate parallel to the flange plate for extending flush with an inner surface of the foam panel;
- a web member for extending between said foam panels, the web member having opposite longitudinal first and second side ends; and - hinge assemblies connecting the first and second side ends of. the web member to the stabilising plate of the first and second anchor members, respectively, each of said hinge assemblies comprising:
- a hinge frame projecting from one of the stabilising plate or the side end of the web member and defining a longitudinal pivot axis; and.
- a pivoting structure disposed longitudinally on the other one of said stabilising plate or said side end of the web member, said pivoting structure being connected to the hinge frame so as to be rotatable about said pivot axis, thereby allowing the web member and anchor members to pivot with respect to each other; whereby the tied foam panels are movable between an extended position where the foam panels are spaced-apart to make the form and a collapsed position where the foam panels are brought close to each other.
A wall form assembly according to the present invention can be easily manufactured, compacted and stored without requiring a lot of space or transported to the site of construction. Due to the relatively light weight of the material used for the manufacture of the elements of the wall form assembly and due to the fact that these elements can be packed in a compact form, a wall form assembly according to the present invention is a lot less fragile during shipping than prior art pre-assembled wall forms, the freight costs for transportation are significantly reduced and the time required to install the form on the site is also significantly reduced as the form is already assembled.
Other features and objects of the present invention will become more apparent from the description that follows of preferred embodiments thereof, having reference to the appended drawings and given as examples only as to how the invention may be put into practice.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a perspective fragmentary view of a form wall assembly according to a firet nrcfcrrcrl orr,F,nrlirr,er.W ,f fhea r~rr~n~,rol~ i~namr~i:..r...
Figure 2 is a top view of the left side foam panel of the form wall assembly of figure 1 showing the relief of the top surface of the foam panel;
Figure 3 is a cross-sectional side elevational view of the form wall assembly of figure 1 showing also an upper and a lower row of stacked foam panels;
Figure 4 is a perspective view of the connector shown in figure 3 without its right anchor member;
Figure 5 is a perspective view of a pre-assembled form wall assembly substantially similar to the form wall assembly of figures 1 and 3, and showing the foam panels in an extended position;
Figure 6 is a top view of the form wall assembly of figure 5 showing the panels folded on each other for transportation purposes;
Figure 7 is a side elevation view of the web member of the connector of figure 1;
Figure 8 is a top view of the web member of figure 7;
Figure 9A is an enlarged top view of a joint between a web member and an anchor member in an extended position;
Figure 9B is the same view as in figure 9A showing the joint in a compacted position;
Figure 10A is a perspective view of two mating anchor members showing the fastener provided at the end portion of the stabilising plate;
Figure 10B is the same view as figure 10A showing the two anchor members linked together;
6a Figure 11 is a perspective view of a connector according to a second preferred embodiment of the invention, shown without its right anchor member and a portion of the web member; and Figure 12 is a side elevation view in partial transparency of a portion of the connector of figure 11.
DESCRIPTION OF A PREFERRED EMBODIMENT
Referring to figure 1, a form wall assembly (10) according to the present invention is suitable to make a form for receiving flowable material such as concrete. The form obtained is of the type comprising a plurality of stacked horizontal rows of coplanar substantially rectangular foamed plastic panels (14) abutting one another along horizontal and vertical edges thereof, as shown in figure 3. More particularly, the form wall assembly (10) comprises a first foam panel (14a) opposed to a second foam panel (14b) in spaced and parallel relationship, and tied together by means of a plurality of connectors (16), as best seen in figure 5.
The foam panels (14) each have a top surtace (15) opposite a bottom surface (17) and, as illustrated in figures 1 and 2, each of the top surface (15) and the bottom surface (17) have a checkerboard-type relief including alternating protrusions (18) and cavities (19). The checkerboard-type relief of the top surface (15) is in mirror symmetry with the checkerboard-type relief of the bottom surface (17) such that the top surface (15) is adapted to fit together with the bottom surface (17) of an upwardly adjacent similar foam panel (14), as shown in figure 5, and the bottom surface (17) is adapted to fit together with a downwardly adjacent similar foam panel (14).
Referring now to figures 3 and 4, each connector (16) comprises a pair of anchor members (20a, 20b), a first one (20a) embedded in the first foam panel (14a) and the second one (20b) embedded in the second foam panel (14b).
Each anchor member (20) has an elongated flange plate (22) extending longitudinally and deep inside the foam panel (14) and an elongated link element (24) connected longitudinally to the flange plate (22) and having a projecting end (26) coming out of the foam panel (14). Preferably, the projecting end (26) of each anchor member (20) comprises a stabilising plate (28) parallel to the flange plate (22) and extending flush with the inner surface (30) of the foam panel (14).
In order to lighten the foam panel assembly, the link element (24) comprises a plurality of holes (25) therealong. However, the link element might have been solid.
It has to be noted that by saying that the anchor member is embedded in the foam panel, a person in the art will understand that in the making of the foam panel (14) in the manufacturing plant, the plastic foam material forming the panel (14) is injected to surround the anchor member (20), thereby strengthening the joint between the panel (14) and the anchor member (20) which thus act as an anchor forming part of the foam panel (14). More specifically and as best seen in figure 3, the plastic foam material, which is preferably a polystyrene, is injected to surround the anchor member (20) such that the stabilising plate (28) of the anchor member (20) is flush with the inner surface (30) of the foam panel (14).
Referring also to figure 7, the connector (16) further comprises a web member (32) extending between the foam panels (14). The web member (32) which is preferably made of a relatively flexible plastic comprises a central portion (44) having a shape adapted to receive and hold metal rods used to reinforce the concrete. The web member (32) further has a first longitudinal side end (34a) hingedly connected to the projecting end (26) of the first anchor member (20a) and a second longitudinal side end (34b) opposed to the first longitudinal side end (34a). The second longitudinal side end (34b) is hingedly connected to the projecting end (26) of the second web member (20b). The foam panels (14) are movable between an extended position, as shown in figure 5, where the foam panels (14) are spaced-apart to make the form and a collapsed position, as shown in figure 6, where the foam panels (14) are brought close to each other.
According to a first preferred embodiment of the invention, in order to hingedly connect the web member (32) to the anchor members (20), the connector (16) preferably comprises a plurality of aligned open slotted tube-like knuckles (36) positioned on the stabilising plate (28), as shown in figure 4, defining a hinge frame, which hingedly cooperate with a pivoting structure embodied by an enlarged end portion (37) of the web member (32). As best seen in figures 9A
and 9B, each tube-like knuckle (36) forms an inner tube ~(38) having a pair of longitudinal opposed edge portions (40) defining a slot (42) in registry with the slots of the other knuckles, as shown in figure 4. Each longitudinal side end (34) of the web member (32) defines the enlarged end portion (37) which is sized to be slidingly insertable in the open tube-like knuckles (36). Referring to figures 9A
and 9B, each longitudinal side end (34) of the web member (32) further defines a strip portion (43) connecting the enlarged end portion (37) to a central portion (44) of the web member (32). The width of the strip portion (43) is such that the strip portion (43) is slidingly insertable in the slots (42) of the anchor members (20). As best seen in figure 4 or 7, the strip portion (43) also includes a plurality of aligned slits (46) each adapted to receive an edge portion (40) of the knuckles (36) to thereby allow the web member (32) and the anchor member (20) to pivot with respect to each other, as shown in figures 9A and 9B. Preferably, the enlarged end portion (37) is also provided therealong with a plurality of small holes (39) to lighten the web member (32). As can be appreciated, the preferred embodiment of the present invention 'illustrated comprises six of those knuckles (36) on each anchor member (20) having six corresponding slits (46) provided on the web member (32). Another embodiment of the present invention may have a different number of those knuckles and slits.
The inner tube (38) and the enlarged end portion (37) may have a circular shape. However, as illustrated in figures 8, 9A and 9B, in order to prevent the panels (14) from moving like a jumping jack during the shipping .or the installation on the site, the inner tube (38) and the enlarged end portion (37), which are preferably made of a slightly flexible plastic, preferably have a shape which allows those elements to be somewhat locked in the extended or collapsed position. More preferably, the inner tube (38) and the enlarged end portion (37) both have a rectangular section with rounded corners. As can be appreciated, that particular shape prevents the enlarged end portion (37) from pivoting freely in the inner tube (38) of the knuckle (36). Therefore, a certain force has to be applied to the assembly to bring if from the collapsed position, as in figure 6, to the extended position, as in figure 1 or 5, or vice versa.
Referring more particularly to figure 7, the connector (16) preferably comprises a stopper (48) to prevent the web member (32) from sliding out upwardly or downwardly of the knuckles (36) of the anchor member (20). More preferably , 10 each enlarged end portion (37) of the web member (32) has an upper extremity portion (50) and a lower extremity portion (52) both comprising a biasing stopper (48) to prevent the side end (34) from sliding out of the tube-like knuckles (36) once inserted therein. The biasing stopper (48) comprises an elongated leaf element (49) with a first end (51) secured to the extremity portion (52) and a free second end (53) pointing opposite the extremity (52). The leaf element (49) is pivotable around the first end (51) thereof between a compressed position where the leaf element (49) is brought close along the outer surface of the enlarged portion (37) to let the knuckles (36) of an anchor member (20) slide over and a relaxed position, as shown in figure 7, where the second end (53) biases away from the outer surface of the enlarged portion (37) to prevent the knuckles (36) from coming out.
Referring to figures 11 and 12, an alternative manner to hingedly connect the web member (32) to the anchor members (20) is illustrated. In accordance with this second embodiment, the hinge frame is embodied by a plurality of connecting elements (64) disposed on the stabilising plate (28) of the projecting end (26) of each anchor member (20). Each of these connecting elements (64) is shaped to form two aligned ridges (66) projecting-from the stabilising plate (28), and the space between them defined a longitudinal sleeve (68). A joining pin (70) can be mounted in the sleeve (68). Preferably, in receiving holes (71 ) are provided in the ridges (66) for this purpose, each hole (71) facing inwardly of .
the sleeve (68).
To cooperate with the connecting elements (64), each longitudinal side end (34a, 34b) of the web member (32) defines a corresponding number of arms (72) which form a pivoting structure. Each arm (72) has an extremity (74) connectable to a corresponding joining pin (70) so as to be rotatable around an axis defined by the joining pin (70). It can be easily seen that this purpose may be achieved by either mounting the extremity (74) of the arm {72) rotatably around the joining pin (70), or mounting the joining pin (70) itself rotatably in the pin receiving holes (71 ). Preferably, the extremity (74) of each arm (72) is provided with a bore (76) for receiving one of the pins (70).
As would be readily understood by a person skilled in the art, the connecting elements (64) may be formed directly by molding during manufacturing of the anchor member (20). In the illustrated embodiment of figures 11 and 12, a protrusion (78) is generated by the molding process on each side of the ridges (66). In the case of corners of a wall where adjacent panels are mounted perpendicularly to each other and where obviously no web member is provided with the connectors, these protrusions, which are embedded in the concrete with the ridges, have the additional advantage of serving as anchor means for the flanges of the connector in which screws could be inserted to fix, for example, a plasterboard wall thereto.
Referring'to figures 3, 4, 10A and 10B, the stabilising plate (28) of each anchor member (20) preferably comprises an upper end (54) and a lower end (56) both comprising a fastener (58) to link the anchor member {20) to a mating anchor member (20), as best seen in figures 10A and 10B. More preferably, the fastener (58) is a grapnel-type fastener molded on the stabilising plate (28) with an extremity (60) projecting from.the corresponding end of the stabilising plate (28). As best seen in figures 10A and 1 OB, the fastener (58) of the upper end (54) of a single stabilising plate (28) is in mirror symmetry with the fastener (58) of the lower end (56) of that stabilising plate (28) and comprises a side (62) provided with three pointed teeth (64) adapted to link with the pointed teeth (64) of a mating anchor member (20). Of course, although three pointed teeth (64) are shown here, any other number of such teeth (64) could be provided as needed, Advantageously, a plurality of teeth (64) is provided to allow an adjustment of the mating between adjoining anchor members (20) by selecting a particular teeth (64) on each fastener (58) for linking with the opposed fastener (58).
Therefore, thanks to both the checkerboard-type relief of the top and bottom surfaces of the panels (14) and the fasteners (58), the wall form assemblies according to the illustrated preferred embodiment of the present invention can be easily stacked over each other and linked together, as shown in figure 3.
Referring more particularly to figure 1, each fastener (58) of a foam panel (14) is preferably sized so the extremity (60) thereof is flush with either the top surface (15) or the bottom surface (17) of the foam panel (14) to prevent that fastener (58) from being in the way.
As can be appreciated from figures 5 and 6, thanks to the specific characteristics of the connector (18) according to the present invention, the panels (14) once tied with the help of those connectors (18) are easily foldable with respect to one another and thus can be shipped to the site of construction in a well compacted form.
Once a form for receiving flowable material is mounted using a plurality of stacked horizontal rows of form wall assemblies, the empty cavity (64) existing between the form wall made of isolating and rigid panels (14) is filled with concrete or with cement based grout. After hardening of the filling material, a composite wall is obtained with the isolating panels firmly attached through the connectors to the concrete inside-wall.
Although preferred embodiments of the invention have been described in detail herein and illustrated in the accompanying drawings, it is to be understood that the invention is not limited to those precise embodiments and that various changes and modifications may be effected therein without departing from the scope or spirit of the invention.
Claims (31)
1. A connector for tying together opposed foam panels in spaced and parallel relationship to make a form for receiving flowable material, the connector comprising:
first and second anchor members, one being devised to be embedded in one of said foam panels and the other being devised to be embedded in the other one of said foam panels, each anchor member having:
an elongated flange plate for extending longitudinally and deep inside the foam panel; and an elongated link element connected longitudinally to the flange plate and having a projecting end devised to come out of the foam panel once the anchor member is embedded therein, said projecting end comprising a stabilising plate parallel to the flange plate for extending flush with an inner surface of the foam panel;
- a web member for extending between said foam panels, the web member having opposite longitudinal first and second side ends; and - hinge assemblies connecting the first and second side ends of the web member to the stabilising plate of the first and second anchor members, respectively, each of said hinge assemblies comprising:
a hinge frame projecting from one of the stabilising plate or the side end of the web member and defining a longitudinal pivot axis; and a pivoting structure disposed longitudinally on the other one of said stabilising plate or said side end of the web member, said pivoting structure being connected to the hinge frame so as to be rotatable about said pivot axis, thereby allowing the web member and anchor members to pivot with respect to each other.
first and second anchor members, one being devised to be embedded in one of said foam panels and the other being devised to be embedded in the other one of said foam panels, each anchor member having:
an elongated flange plate for extending longitudinally and deep inside the foam panel; and an elongated link element connected longitudinally to the flange plate and having a projecting end devised to come out of the foam panel once the anchor member is embedded therein, said projecting end comprising a stabilising plate parallel to the flange plate for extending flush with an inner surface of the foam panel;
- a web member for extending between said foam panels, the web member having opposite longitudinal first and second side ends; and - hinge assemblies connecting the first and second side ends of the web member to the stabilising plate of the first and second anchor members, respectively, each of said hinge assemblies comprising:
a hinge frame projecting from one of the stabilising plate or the side end of the web member and defining a longitudinal pivot axis; and a pivoting structure disposed longitudinally on the other one of said stabilising plate or said side end of the web member, said pivoting structure being connected to the hinge frame so as to be rotatable about said pivot axis, thereby allowing the web member and anchor members to pivot with respect to each other.
2. A connector according to claim 1, wherein said hinge frame comprises at least one pivot pin extending along said longitudinal pivot axis.
3. A connector according to claim 2, wherein for each hinge assembly:
the hinge frame comprises a plurality of connecting elements, each connecting element comprising one of said longitudinally extending pivot pin; and the pivoting structure comprises a plurality of arms cooperating with each of the connecting elements, each arm having an extremity pivotally connected to the pivot pin of a corresponding connecting element so as to be rotatable around said longitudinal pivot axis.
the hinge frame comprises a plurality of connecting elements, each connecting element comprising one of said longitudinally extending pivot pin; and the pivoting structure comprises a plurality of arms cooperating with each of the connecting elements, each arm having an extremity pivotally connected to the pivot pin of a corresponding connecting element so as to be rotatable around said longitudinal pivot axis.
4. A connector according to claim 3, wherein each connecting element projects from the stabilising plate of a corresponding anchor element, and said plurality of arms are located on the corresponding longitudinal side end of the web member.
5. A connector as claimed in claim 3, wherein each connecting element comprises two aligned and spaced ridges between which the pivot pin of the respective connecting element is extending.
6. A connector as claimed in claim 3, wherein the extremity of each arm of the pivoting structure has a bore therein in which the pivot pin is extending.
7. A connector as claimed in claim 1, wherein the stabilising plate of each anchor member comprises an upper end and a lower end both comprising a fastener to link the anchor member to a mating anchor member.
8. connector as claimed in claim 7, wherein each of said fasteners is a grapnel-type fastener projecting from the respective end of the stabilising plate
9. A connector as claimed in claim 8, wherein each of the grapnel-type fastener comprises a side provided with three pointed teeth adapted to link with the pointed teeth of a mating anchor member.
10. A connector as claimed in claim 9, wherein the grapnel-type fastener of the upper end of the stabilising plate is in mirror symmetry with the grapnel-type fastener of the lower end of the stabilising plate.
11. A connector according to claim 1, wherein for each hinge assembly:
the hinge frame comprises a plurality of aligned open slotted tube-like knuckles, each tube-like knuckle forming an inner tube having a pair of longitudinal opposed edge portions defining a slot in registry with the slots of the other knuckles; and the pivoting structure comprises an enlarged end portion sized to be slidingly insertable in said open tube-like knuckles and a strip portion connecting the enlarged end portion to said other one of the stabilising plate and side end of the web member, the strip portion having a width sized so the strip portion is slidingly insertable in said slots of the knuckles and including a plurality of aligned slits each adapted to receive an edge portion of the knuckles.
the hinge frame comprises a plurality of aligned open slotted tube-like knuckles, each tube-like knuckle forming an inner tube having a pair of longitudinal opposed edge portions defining a slot in registry with the slots of the other knuckles; and the pivoting structure comprises an enlarged end portion sized to be slidingly insertable in said open tube-like knuckles and a strip portion connecting the enlarged end portion to said other one of the stabilising plate and side end of the web member, the strip portion having a width sized so the strip portion is slidingly insertable in said slots of the knuckles and including a plurality of aligned slits each adapted to receive an edge portion of the knuckles.
12. A connector according to claim 11, wherein said tube-like knuckles extend along the stabilising plate, and said enlarged end portion is located on the corresponding longitudinal side end of the web member.
13. A connector as claimed in claim 11 wherein the inner tube of the tube-like knuckles and the enlarged portion of each pivoting structure has a rectangular cross-section with rounded corners to prevent said enlarged portions inserted in an inner tube from pivoting freely therein.
14. A connector as claimed in claim 13, wherein each enlarged end portion has an upper extremity portion and a lower extremity portion both comprising a biasing stopper to prevent the side end from sliding out of the tube-like knuckles once inserted therein.
15. A connector as claimed in claim 14, wherein each biasing stopper comprises an elongated leaf element with a first end secured to said extremity portion and a free second end pointing opposite said extremity, the leaf element being pivotable around the first end between a compressed position where the leaf element is brought close along the enlarged portion to let the knuckles of a hinge frame slide over and a relaxed position where the second end biases away from the enlarged portion to prevent the knuckles from coming out.
16. A form wall assembly to make a form for receiving flowable material, the form wall assembly comprising:
a first and a second opposed foam panels in spaced and parallel relationship;
and a plurality of connectors tying together said first and second foam panels, each connector comprising:
first and second anchor members, the first one embedded in the first foam panel and the second one embedded in the second foam panel, each anchor member having:
an elongated flange plate for extending longitudinally and deep inside the foam panel; and an elongated link element connected longitudinally to the flange plate and having a projecting end devised to come out of the foam panel once the anchor member is embedded therein, said projecting end comprising a stabilising plate parallel to the flange plate for extending flush with an inner surface of the foam panel;
- a web member for extending between said foam panels, the web member having opposite longitudinal first and second side ends; and - hinge assemblies connecting the first and second side ends of the web member to the stabilising plate of the first and second anchor members, respectively, each of said hinge assemblies comprising:
a hinge frame projecting from one of the stabilising plate or the side end of the web member and defining a longitudinal pivot axis; and a pivoting structure disposed longitudinally on the other one of said stabilising plate or said side end of the web member, said pivoting structure being connected to the hinge frame so as to be rotatable about said pivot axis, thereby allowing the web member and anchor members to pivot with respect to each other; whereby the tied foam panels are movable between an extended position where the foam panels are spaced-apart to make the form and a collapsed position where the foam panels are brought close to each other.
a first and a second opposed foam panels in spaced and parallel relationship;
and a plurality of connectors tying together said first and second foam panels, each connector comprising:
first and second anchor members, the first one embedded in the first foam panel and the second one embedded in the second foam panel, each anchor member having:
an elongated flange plate for extending longitudinally and deep inside the foam panel; and an elongated link element connected longitudinally to the flange plate and having a projecting end devised to come out of the foam panel once the anchor member is embedded therein, said projecting end comprising a stabilising plate parallel to the flange plate for extending flush with an inner surface of the foam panel;
- a web member for extending between said foam panels, the web member having opposite longitudinal first and second side ends; and - hinge assemblies connecting the first and second side ends of the web member to the stabilising plate of the first and second anchor members, respectively, each of said hinge assemblies comprising:
a hinge frame projecting from one of the stabilising plate or the side end of the web member and defining a longitudinal pivot axis; and a pivoting structure disposed longitudinally on the other one of said stabilising plate or said side end of the web member, said pivoting structure being connected to the hinge frame so as to be rotatable about said pivot axis, thereby allowing the web member and anchor members to pivot with respect to each other; whereby the tied foam panels are movable between an extended position where the foam panels are spaced-apart to make the form and a collapsed position where the foam panels are brought close to each other.
17. A form wall assembly according to claim 16, wherein said hinge frame comprises at least one pivot pin extending along said longitudinal pivot axis.
18. A form wall assembly according to claim 17, wherein for each hinge assembly:
the hinge frame comprises a plurality of connecting elements, each connecting element comprising one said longitudinally extending pivot pin; and the pivoting structure comprises a plurality of arms cooperating with each of the connecting elements, each arm having an extremity pivotally connected to the pivot pin of a corresponding connecting element so as to be rotatable around said longitudinal pivot axis.
the hinge frame comprises a plurality of connecting elements, each connecting element comprising one said longitudinally extending pivot pin; and the pivoting structure comprises a plurality of arms cooperating with each of the connecting elements, each arm having an extremity pivotally connected to the pivot pin of a corresponding connecting element so as to be rotatable around said longitudinal pivot axis.
19. A form wall assembly according to claim 18, wherein each connecting element projects from the stabilising plate of a corresponding anchor element, and said plurality of arms are located on the corresponding longitudinal side end of the web member.
20. A form wall assembly as claimed in claim 18, wherein each connecting element comprises two aligned and spaced ridges between which the pivot pin of the respective connecting element is extending.
21. A form wall assembly as claimed in claim 18, wherein the extremity of each arm of the pivoting structure has a bore therein in which the pivot pin is extending.
22. A form wall assembly as claimed in claim 16, wherein the stabilising plate of each anchor member comprises an upper end and a lower end both comprising a fastener to link the anchor member to a mating anchor member.
23. A form wall assembly as claimed in claim 22, wherein each of said fasteners is a grapnel-type fastener projecting from the respective end of the stabilising plate.
24. A form wall assembly as claimed in claim 23, wherein each foam panel has a top surface opposite a bottom surface, each of the top surface and the bottom surface having a checkerboard Type relief including alternating protrusions and cavities, the checkerboard-type relief of the top surface being in mirror symmetry with the checkerboard-type relief of the bottom surface such that the top surface is adapted to fit together with the bottom surface of an upwardly adjacent similar foam panel and the bottom surface is adapted to fit together with the top surface of a downwardly adjacent similar foam panel.
25. A form wall assembly as claimed in claim 24, wherein the extremity of each of the fasteners of a foam panel is flush with either the fop surface or the bottom surface of the foam panel.
26. A form wall assembly as claimed in claim 25, wherein each of the grapnel-type fasteners comprises a side provided with three pointed teeth adapted to link with the pointed teeth of a mating anchor member.
27. A form far receiving flowable material comprising a plurality of stacked horizontal rows of form wall assemblies as defined in claim 16 in the extended position.
28. A form wall assembly according to claim 16, wherein for each hinge assembly:
the hinge frame comprises a plurality of aligned open slotted tube-like knuckles, each tube-like knuckle forming an inner tube having a pair of longitudinal opposed edge portions defining a slot in registry with the slots of the other knuckles; and the pivoting structure comprises an enlarged end portion sized to be slidingly insertable in said open tube-like knuckles and a strip portion connecting the enlarged end portion to said other one of the stabilising plate and side end of the web member, the strip portion having a width sized so the strip portion is slidingly insertable in .said slots of the knuckles and including a plurality of aligned slits each adapted to receive an edge portion of the knuckles.
the hinge frame comprises a plurality of aligned open slotted tube-like knuckles, each tube-like knuckle forming an inner tube having a pair of longitudinal opposed edge portions defining a slot in registry with the slots of the other knuckles; and the pivoting structure comprises an enlarged end portion sized to be slidingly insertable in said open tube-like knuckles and a strip portion connecting the enlarged end portion to said other one of the stabilising plate and side end of the web member, the strip portion having a width sized so the strip portion is slidingly insertable in .said slots of the knuckles and including a plurality of aligned slits each adapted to receive an edge portion of the knuckles.
29. A form according to claim 28, wherein said tube-like knuckles extend along the stabilising plate, and said enlarged end portion is located the corresponding longitudinal side end of the web member.
30. A form as claimed in claim 28 wherein the inner tube of the tube-like knuckles and the enlarged portion of each pivoting structure has a rectangular cross-section with rounded corners to prevent said enlarged portions inserted in an inner tube from pivoting freely therein.
31. A form as claimed in claim 30, wherein each enlarged end portion has an upper extremity portion and a lower extremity portion both comprising a biasing stopper to prevent the side end from sliding out of the tube-like knuckles once inserted therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2292865 CA2292865C (en) | 1998-12-23 | 1999-12-22 | Concrete wall form and connectors therefor |
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002256091A CA2256091A1 (en) | 1998-12-23 | 1998-12-23 | Concrete wall form and connectors therefor |
| CA2,256,091 | 1998-12-23 | ||
| CA 2267633 CA2267633A1 (en) | 1998-12-23 | 1999-04-15 | Concrete wall form and connectors therefor |
| CA2,267,633 | 1999-04-15 | ||
| CA 2292865 CA2292865C (en) | 1998-12-23 | 1999-12-22 | Concrete wall form and connectors therefor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2292865A1 CA2292865A1 (en) | 2000-06-23 |
| CA2292865C true CA2292865C (en) | 2005-04-12 |
Family
ID=31891675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2292865 Expired - Lifetime CA2292865C (en) | 1998-12-23 | 1999-12-22 | Concrete wall form and connectors therefor |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2292865C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2358195C (en) | 2001-05-04 | 2007-12-18 | Polyform A.G.P. Inc. | Improvements in a stackable construction panel system |
| CZ20032141A3 (en) | 2003-08-06 | 2005-05-18 | Canstroy Cz, S. R. O. | Insulated concrete wall forming system with hinged bridging web |
| WO2007143820A1 (en) * | 2006-06-14 | 2007-12-21 | Encon Environmental Construction Solutions Inc. | Insulated concrete form |
| CA3056094A1 (en) | 2018-09-21 | 2020-03-21 | Cooper E. Stewart | Insulating concrete form apparatus |
-
1999
- 1999-12-22 CA CA 2292865 patent/CA2292865C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2292865A1 (en) | 2000-06-23 |
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Effective date: 20191223 |