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CA2209251C - Form system - Google Patents

Form system

Info

Publication number
CA2209251C
CA2209251C CA 2209251 CA2209251A CA2209251C CA 2209251 C CA2209251 C CA 2209251C CA 2209251 CA2209251 CA 2209251 CA 2209251 A CA2209251 A CA 2209251A CA 2209251 C CA2209251 C CA 2209251C
Authority
CA
Grant status
Grant
Patent type
Prior art keywords
unit
form
connecting
member
members
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CA 2209251
Other languages
French (fr)
Other versions
CA2209251A1 (en )
Inventor
Frank B. Bentley
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Airlite Plastics Co
Original Assignee
Frank B. Bentley
Sca Packaging North America, Inc.
Tegrant Diversified Brands, Inc.
Formtech Corporation
Formtech Llc
Airlite Plastics Co.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Grant date

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/84Walls made by casting, pouring, or tamping in situ
    • E04B2/86Walls made by casting, pouring, or tamping in situ made in permanent forms
    • E04B2/8611Walls made by casting, pouring, or tamping in situ made in permanent forms with spacers being embedded in at least one form leaf
    • E04B2/8617Walls 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
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/84Walls made by casting, pouring, or tamping in situ
    • E04B2/86Walls made by casting, pouring, or tamping in situ made in permanent forms
    • E04B2/8635Walls made by casting, pouring, or tamping in situ made in permanent forms with ties attached to the inner faces of the forms
    • E04B2/8641Walls made by casting, pouring, or tamping in situ made in permanent forms with ties attached to the inner faces of the forms using dovetail-type connections
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/84Walls made by casting, pouring, or tamping in situ
    • E04B2/86Walls made by casting, pouring, or tamping in situ made in permanent forms
    • E04B2/8647Walls made by casting, pouring, or tamping in situ made in permanent forms with ties going through the forms
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38Connections for building structures in general
    • E04B1/61Connections for building structures in general of slab-shaped building elements with each other
    • E04B1/6108Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together
    • E04B1/612Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together by means between frontal surfaces
    • E04B1/6125Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together by means between frontal surfaces with protrusions on the one frontal surface co-operating with recesses in the other frontal surface
    • E04B1/6129Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together by means between frontal surfaces with protrusions on the one frontal surface co-operating with recesses in the other frontal surface the connection made by expansion

Abstract

A form system comprises several form units, each having a pair of panels positioned in spaced relation to each other. A plurality of tie members connects the panels, the tie member comprising a spacer member disposed transversely between the panels. Each tie member further comprises a pair unit connecting members, one positioned on each of an outside surface of a panel. The spacer members are each connected to a first unit and a second unit connecting member through the first opening in the panels. The first and second unit connecting members have first and second connections respectively, to permit the first and second unit connecting members of a first form unit to be connected with corresponding first and second connecting members of a second form unit.

Description

r ~ r FORM SYSTEM
Field of the Invent: ion This in~~ention relates to form systems used to construct structural components_such as walls.
Background A:rt Constru~~tion components, such as walls and columns, are often made from castable materials such as concrete. As is well known, too make a specifically shaped component from such materials, a form is built or erected which functions as a mould for the cast:able material. In the past, forms were typically made from inexpensive materials such as wood. To make the component, the form is erected to create a cavity capable of holding the castable material (eg. concrete) in a liquid form. The concrete is then poured or otherwise fed into the cavity crE:ated by the form and then allowed to set.
Once the material has hardened into a structural component, the form is :removed. After use as a form, quite often, much of the form rlaterial can not be reused and must be discarded.
Furthermore, the r~amoval of the form requires a significant amount of labour.
Another way a form can be built is to make a form from several form units, each form unit having a pair of spaced panels. The form units are placed adjacent each other, both horizontally and vertically, to build a complete form. So long as the =_ndivid.ual form units are not too small, enhanced w r efficiency i:z the construction of a form may be achieved in such a systE:m. This is particularly the case if the form units are designed to remain permanently in the situ, once placed, and do not have to be removed once the concrete has been poured and set. One such system has side panels for each form unit made of an insulative material. These side panels perform the dual purpose of functioning as the side walls for the cavity and then after the concrete has set, as an insulative layer on each side of the concrete.
It will be appreciated that it is often necessary to construct a wall many metres in length and several metres in height. Thia wil.1 require many form units that must be held together. Particularly in forms which are high, the vertical interconnect__ons between adjacent form units are important as they resist vertical lift forces that tend to lift and separate adj,3cent form units.
However, providing interconnections between form units which are ei=fective, but which can quickly be engaged, is problematic.
Another difficulty in such systems is the lack of space efficiency in the transportation of pre-built form units to a construction site.
Accordingly, it is desirable to have a form system that employs form units having both efficient and effective form unit interconnections, and the form unit must be capable of being efficiently l.ransported to the construction site.

Summary of the Invention According to one aspect of the invention there is provided a form system having first and second form units, said first and second panels positioned in spaced relation to each other, each of said first and second panels having an inwardly facing surface and an outwardly facing surface and a first opening therethrough; at least one tie member, said tie member comprising a spacer member having first and second ends, said s.oacer rnember being disposed transversely between said panels, said tie member further comprising first and second unit connecting members being positioned away from said inward facing surface and proximate said outward facing surface of said first panel and said second unit connecting member being posit_Loned away from said inward facing surface 1$ of said second panel and proximate said outward facing surface of said second panel, said tie member having a first attachment me=_ans providing an attachment of said spacer member to said first un:Lt~ connecting member through said first opening in said second panel; said first and second unit connecting nembers of said tie member having a first and second connection means respectively, to permit said first unit connecting member of a first form unit to be connected with one of said first and second connecting members of a second form unit, when said panels of said first form unit is placed above and i:> in transverse alignment and abutment with respective panels of said second form unit.
According to another aspect of the invention there is provided a kit for building a form unit having first and second spa~~ed apart panels each having an opening therethrough, said kit comprising, in combination: a plurality of elongated spacer members, each said spacer members, having first and ~;econd ends, first and second elongated unit connecting members, each said spacer member having a first connecting dE=_vice located proximate said first end adapted to co-operate with a :=:first connecting device on said first unit connecting member to establish a first connection, 5 therebetween, through said opening in said first panel; and said spacer :member having a second connecting member located proximate sa_Ld second end adapted to co-operated with a second connecting member to establish a second connection, therebetween,, though said second opening in said second panel;
said first and sec:c>nd unit connecting members of said also having a third and fourth connection means respectively, to permit said :first unit connecting member of a first form unit to be connected wii;h one of said first and second connecting members of a second form unit, and said second unit connecting member of said fir~~t form unit to be connected with the other said first and second connecting members of said second form unit, when :>aid panels of said first form unit are placed above in transverse alignment and abutment with respective panels of said second form unit.
Accordi:zg to a further aspect of the invention, there is provided a form unit for a form system, said form unit comprising: first and second panels positioned in spaced, generally parallel relation to each other, each of said first and second panels having an inwardly facing surface and an outwardly facing surface and a first opening therethrough;
first and second tie members, each of said first and second tie members comprising an elongated spacer member having first and second ends,. said spacer member being disposed transversely between said panels and said first and second tie members being spaced longitudinally from one another, said tie member further comprising first and second elongated unit connecting members, said first unit connecting member being oriented generally vertically and positioned on the outward side of said first panel and said second unit connecting member being oriented generally vertically and positioned on the outward side of said second panel, said tie member having a first attachment means for attaching said spacer member to :aid first connecting member through said first opening in ~~aid first panel, and a second attachment means for permanently attaching said tie member to said second connecting member through said first opening in said second panel; said first unit connecting member having a first unit connection means adapted to cooperate with a second unit connecting mans of a second form unit to provide to a first connection between said first form unit and said second form unit when sa__d panels of said first form unit are placed above IS and in transverse alignment and abutment with respective panels of said second form unit; said second unit connecting member having a third unit connection means adapted to cooperate with a fourth unit connecting means of a second form unit to provide for a second connection between said first form unit and said second form unit when said panels of first form unit are placed above and in transverse alignment and abutment with pane:Ls of said second form unit.
Brief Description of the Drawings In drawings which illustrate example embodiments of the invention:
Figure 1 ins a perspective view of a form unit made in accordance with one embodiment of the invention;

Figure 2 is a front, elevation view of part of the form unit of Figure l;
Figure 3 is a plan view of part of the form unit of Figure i;
Figure 4 is a plan view of the connection between the tie member and connecting member shown in Figure 1;
Figure 5 is ,~ perspective view showing the connection between the tie member and connecting member shown in Figure 1;
Figure 6 is a detailed view showing a connection made between two vertically adja cent connected wall-forming units;
Figure 7 is a plan view from above along the line 7-7 in Figure E;
Figure 8 is plan view of the detail in Figure 6 along the line 8-8 1T1 Figure 6;
Figure 9 is a similar view to Figure 6 showing a connection made between two vertically adjacent connected wall-forming units;
Figure 10 is a schematic side elevational view of part of a complete form constructed in accordance with an embodiment of the invention.
Figure 11 is a schematic elevational view of part of a form constructed ~_n accordance with an embodiment of the invention.

Description of the Preferred Embodiments - With reference to Figure 1, a single form unit 20a is illustrated. In the construction of a structural component, for example a wall, several such form units 20a are utilized.
Wall form units 20a are placed adjacent to, and in lateral alignment with, other form units to make a complete form structure, as illustrated in Figure 10.
A single form unit 20a has a pair of spaced, generally planar and transversely aligned panel members 22a and 24a. In one embodiment, panel members 22a and 24a are made from a lightweight, temperature insulating material such as polystyrene or an extruded form. The panels may however, be made of materials other than those which are particularly adapted to provide for temperature insulation, but which will retain the liquid rnaterial.
In Figure l, panel unit 20a is shown with a single tie member 26a in detail. However, to provide greater stability for a form unit, a pair of tie members 26a and 28a may be employed.
As shown in Figures 2 and 3, each tie member 26a comprises three components: a transversely oriented spacer member 30a and a pair of vertically oriented unit connecting members 34a and 36a. In Figures 2 and 3, the form unit 20a, including the tie member 26a, is shown in its disassembled state. However, spacer member 30a may be easily attached to vertical unit connecting members 34a and 36a in the manner hereafter described. In one embodiment of the invention, spacer member 30a has a recess extending substantial ly the full vertical length of the spacer member, as is clearly ' CA 02209251 2000-09-06 illustrated :by a top view in Figure 4. Spacer member 30a, and elements 34a and 36a, are made from a material such as polypropylene, nylon 6/6, PVC or A.B.S.
Spacer member 30a also has an indentation 62a on the upper transverse arm 63a of the spacer member 30a and an indentation G4a on the lower transverse arm 65a of the spacer member 30a, ~slthoudh other embodiments of this invention may have a plurality of such indentations. Each indentation 62a and 64a is adapted to be able to receive, and support at that location, a concrete strengthening material such as steel rebar 61. It: will ;oe appreciated that when several form units are arranges: laterally adjacent to each other, lengths of rebar may be supported laterally on the indentations 62a and 64a of successive laterally positioned form units. To assist in the insertion a:nd retention of the lengths rebar 61, the indentations 62a and 64a may be made from a resilient material.
Each of the vertical form unit connecting members 34a and 36a has a fin 58a and 60a extending substantially the full vertical length of the inside end of the connecting member.
Recesses 38a and 4Ca are so arranged to cooperate with the fins 58a and 60a such that each of the said fins can be received into one of said recesses though one or two apertures in panels 22a and :?4a. It will be appreciated if panels 22a and 24a are constructed of a material such as polystyrene, it will be easy for a person assembling form unit 20a to create the apertures required for the interconnection between the spacer member 30a and the vertical unit connecting members 34a and 3&a. However, greater efficiency may be achieved if the apertures are at least pre-marked, if not pre-formed.

The attachment between recesses 38a and 40a and fins 58a and 60a is illustrated in Figure 4. In this figure, a positive attachment is created when the fin 60a slides into the recess 40a in a vertical direction. The recess 40a narrows at its outer margin 41a in order to grasp the 5 correspondingly narrowed portion 61a of the fin 60a and provide a snug fit between spacer member 30a and connecting elements 34a and 3F>a. The recess does not reach all the way to the upper end of the spacer element 30a, thus preventing further slid_~ng of the connecting elements 34a and 36a, as is 10 illustrated .in Figure 5.
This connection, between the fins 58a and 60a and the recesses 38a and 40a, is not permanent, and the form units can be reshaped if it is discovered that a mistake was made.
Once the spacer member 26a is attached to the vertical unit connecting members, such as 36a, the vertical unit connecting members are oriented vertically and have a surface which lies a~~ainst t:he outward facing surface of a panel.
A may be seen in Figure 1, connecting elements 34a and 36a have a laterally (in direction of axis X) extending channel or groove 76a in their upper lateral surfaces 75a and lower lateral surfaces 77a. A linking element 71a has a 2:~ laterally extending tongue or protrusion 72a which extends upwards from an upper, lateral surface 74a and downwards from a lower, lateral surface 79a.
A pair of form units may be positioned one on top of the other wherein the channel of a lower form unit will be received in corresponding and respective protrusion of a linking element, which is then received in a corresponding and respective channel of an upper form unit (not shown). The result is that displacement of a first upper form unit relative to a second lower form unit is resisted.
The mechanism for providing a positive connection between adjacent vertically positioned form units is illustrated in further detail in figures 6,7,8, and 9.
Tn Figure 6, the lower portion of a typical unit connecting rr.ember 34a and the upper portion of a typical linking element 71a are shown disconnected from each other.
The unit connecting member and the linking element both lie against the cuter surfaces of their respective panels. Formed in the lower portion of member 34a .is a recess 76a defined by an opening and ver'~ically oriented side walls 82a,84a and a l~ base 80a. The side: walls 82a,84a are each saw-toothed.
Connection member 54a has at its upper end an arrow formation 86~. with an arrowhead 88a. The saw-tooth pattern of the walls 82a,84a is such that the sloped sides of arrowhead 2G 88a are guided and carried past the individual teeth during axial insertion of the arrow formation 86a into the recess 76a in the direci:ion of axis z of Figure 1.
The lower portion of the connecting member is def ormable 2~ and permits side walls to be displaced allowing insertion of the arrowhead 88a into the recess. But the side walls are resilient. Thus, once arrowhead 88a has passed a p air of oppositely positioned sawteeth on the sidewalls 82a and 89a, axial remova:L of the arrowhead 88a is prevented as the side 3U portions of 'the arrowhead engage the rear sides of the saw-teeth.

However,, even when two form units 20a and 20d have been interconnected through use of linking element 71a and connection members 34a and 36a as shown in Figure 9, the recess 76aa is sti:Ll accessible. Thus, if it is desired to disconnect the connection between arrowhead 86a and the side walls 82a and 84a c>f the recess, a transverse application of force in a manner gc=nerally depicted in Figure 9 (generally in the direction along of axis Y in Figure 1), permits arrowhead 88a to become dislc>dged from the side walls.
The dimensions of the arrowhead formation 86a and the materials from which it is made, are such that it would be quite stiff and a have a relatively high degree of resistance to bending. Typically it would require a lever device to be employed to :oend the arrowhead out of the recess to release 1~ the connection. Such a lever device might be a crow bar or a hammer claw.
When building a form from many form units, it is necessary that there also be a lateral interconnection between form units. This can be accomplished by erecting a form with form units such as those of Figure 1 placed in a pattern as shown in Figure 10. In this embodiment, each form unit has a pair of vertical foam unit connecting members. Each form unit is off-set in its lateral position relative to form unit above 2'~ and below. 7.'aking one such fo-~~m unit 20e, one of the pair of connecting members 26e is connected to a connecting member 28g of a form unit 20g, and also to a connecting member 28k of a form unit 20k. The other of the pair of connecting members 28e is connected to connecting member 26f of a form unit 20f and 3(1 also to a connecting member 26h of a form unit 26a.

In use, individual panels and the components of the tie . members may be shipped to a construction site. The components ' of the tie members can be conveniently packaged as kits.
Unassembled, the components of the form system can be efficiently carried by conventional transport devices. Once at the site, the wall forming units can be easily assembled by using a pair of panels and the components of at least one tie member, but :preferably using as least two tie members. For each tie member, a spacer portion is positioned in between the two panels, with it.s connecting members each passing through 1f an aperture in a panel. A pair of vertical connecting members will be secured in a vertical orientation, against the outer surface of each panel and then will be attached to the spacer member by the attachment of the connecting members to the spacer membez~s as described above.
As many form units are built as required to construct a complete form for the desired structure. If the form is not continuous, the ends of the form may blocked in a conventional means, so as to provide a complete cavity which will hold the liquid concrete.
In a construction project, the lower most form units may be secured t~~ a base in lateral alignment (for example, a previously poured footing) providing an interconnection between a concrete footing made with a length of 2 X 4 secured to the concrete (eg. by concrete nails) and then providing interconnections between the lengths of 2 X 4 and the vertical unit connecting members.
Thereafter, foam units may be placed on top of the base form units an~~ interconnected such as in the manner described above. Preferably, each form unit will comprise at least a ,. , pair,of laterally spaced tie members. This will provide for greater vertical ~;tability of the form and assist in the construction process.
Once the concrete has set, the panels will remain in situ. The vertical unit connecting members will provide a base to which 'other finishing components may be attached (for example, dry wall for interior walls, siding on exterior walls).
1C~ Various modifications and changes are also possible within the scope of- the invention.
The outer facing surfaces of the panels may be recessed to provide a recess into which the vertical unit connecting 1'~ members may be received such that when the form unit is assembled, the vertical connecting members have outward facing surfaces which sit flush with the remaining parts of the outer surfaces of the panels.
20 Form unuts may be arranged as shown in Figure 12. wherein each form unit may be secured both above and below to a pair of form units. For example, form unit is connected by three vertical connecting elements associated with each of the two panels (only one of the panels and one set of vertical 2:i connecting elements being visible in Figure 12) to corresponding sets of connecting elements associated with form units 220b and 220c.

Claims (29)

1. A form system having first and second form units, said first and second form units each having:
- first and second panels positioned in spaced relation to each other, each cf said first and second panels having an inwardly facing surface and an outwardly facing surface and a first opening therethrough;
- at least one tie member, said tie member comprising a spacer member having first and second ends, said spacer member being disposed transversely between said panels, said tie member further comprising first and second unit connecting members, said first unit connecting member being positioned away from said inward facing surfaces and proximate said outward facing surface of said first panel and said second unit connecting member being positioned away from said inward facing surface of said second panel and proximate said outward facing surface of said second panel, said tie member having a first attachment means providing an attachment of said spacer member to said first unit connecting member through said first opening in ;aid first panel, and a second attachment means providing for attachment of said tie member to said second connecting member through said first opening in said second panel;
- said first and second unit connecting members of said tie member having a first anal second connection means respectively, to permit said first unit connecting member of a first form unit to be connected with one of said first and second connecting members of a second form unit, and said second unit connecting member of said first form unit to be connected with the other of said first and second connecting members of said second form unit, when said panels of said first form unit is placed above and is in transverse alignment and abutment with respective panels of said second form unit.
2. A system as claimed in claim 1 wherein said first and second connecting means are adapted to provide for a first and a second releasable connection between said first and second form units.
3. A system as claimed in claim 1 wherein said first connection means comprises a recess in an upper portion and a lower portion of said first and second unit connecting members of said first form unit and a recess in an upper portion and a lower portion of said first and second unit connecting members of said second form unit which is formed with a pair of opposite facing side walls, each of said side walls having a saw-tooth profile, and a linking element, said linking element having an arrow formation located at each end proximate the ends of said unit connecting members, said arrowhead formation having an arrowhead, said saw-tooth side walls being engaged by said arrowhead, and said connection means being adapted to permit said arrowhead to be axially inserted into said recess, but resisting axial removal of said arrowhead from said recess.
4. A system as claimed in claim 3 wherein said second connection means comprises a recess in an upper portion and a lower portion of said first and second unit connecting members of said first form unit and a recess in an upper portion and a lower portion of said first and second unit connecting members of said second form unit which is formed with a pair of opposite facing side walls, each of said side walls having a saw-tooth profile, and a linking element, said linking element having an arrow formation located at each end proximate the ends of said unit connecting members, said arrowhead formation having an arrowhead, said saw-tooth side walls being engaged by said arrowhead, and said connection means being adapted to permit said arrowhead to be axially inserted into said recess, but resisting axial removal of said arrowhead from said recess.
5. A system as claimed in claim 4 wherein said arrow formations and said recesses are adapted to provide for lever access to said recesses when said arrowheads are received therein, whereby said lever access permits the transverse dislodgment of said arrowheads from said recesses, to provide for releasable connections between said first and second form unit.
6. A system as claimed in claim 4 wherein said panels are made form a heat insulating material.
7. A system as claimed in claim 5 wherein said panels are spaced apart in a generally parallel relationship and said openings in said panels are laterally and vertically aligned.
8. A system as claimed in claim 1 wherein said panels are spaced apart in a generally parallel relationship with each other.
9. A form system as claimed in claim 1, wherein said first and second unit connecting members are elongated and oriented generally vertically against the outward facing surfaces of said first and second panels respectively.
10. A system as claimed in claim 9 wherein said first and second connection means are adapted to provide for a first and a second releasable connection between said first and second form units.
11. A system as claimed in claim 9 wherein said first connection means comprises a recess in an upper portion and a lower portion of said first and second unit connecting members of said first form unit and a recess in an upper portion and a lower portion of said first and second unit connecting members of said second form unit which is formed with a pair of opposite facing side walls, each of said side walls having a saw-tooth profile, and a linking element, said linking element having an arrow formation located at each end proximate the ends of said unit connecting members, said arrowhead formation having an arrowhead, said saw-tooth side walls being engaged by said arrowhead, and said connection means being adapted to permit said arrowhead to be axially inserted into said recess, but resisting axial removal of said arrowhead from said recess.
12. A system as claimed in claim 11 wherein said second connection means comprises a recess in an upper portion and a lower portion of said first and second unit connecting members of said first form unit and a recess in an upper portion and a lower portion of said first and second unit connecting members of said second form unit which is formed with a pair of opposite facing side walls, each of said side walls having a saw-tooth profile, and a linking element, said linking element having an arrow formation located at each end proximate the ends of said unit connecting members, said arrowhead formation having an arrowhead, said saw-tooth side walls being engaged by said arrowhead, and said connection means being adapted to permit said arrowhead to be axially inserted into said recess, but resisting axial removal of said arrowhead from said recess.
13. A system as claimed in claim 12 wherein said arrow formations and said recesses are adapted to provide for lever access to said recesses when said arrowheads are received therein, whereby said lever access permits the transverse dislodgement of said arrowheads from said recesses, to provide for releasable connections between said first and second form unit.
14. A system as claimed in claim 13 wherein said panel are made from a heat insulating material.
15. A system as claimed in claim 13 wherein said panels are spaced apart in a generally parallel relationship, and said openings in said panels are laterally and vertically aligned.
16. A kit form building a form unit having first and second spaced apart panels each having an opening therethrough, said kit comprising, in combination:

- a plurality of elongated spacer members, each said spacer member having first and second ends, first and second elongated unit connecting members, each said spacer member having a first connecting device located proximate said first end adapted to co-operate with a first connecting device on said first unit connecting member to establish a first connection, therebetween, through said opening in said first panel; and said spacer member having a second connecting member located proximate said second end adapted to co-operate with a second connecting device on said unit connecting member to establish a second connection, therebetween, through said second opening in said second panel;

- said first and second unit connecting members of said unit also having a third and fourth connection means respectively, to permit said first unit connecting member of a first form unit to be connected with one of said first and second connecting members of a second form unit, and said second unit connecting member of said first and second connecting members of said second form unit, when said panels of said first form unit are placed above and in transverse alignment and abutment with respective panels of said second form unit.
17. A form unit f:or a form system, said from unit comprising:

- first and second panels positioned in spaced, generally parallel relation to each other, each of said first and second panels having an inwardly facing surface and a outwardly facing surface and a first opening therethrough;

- first and second tie members, each of said first and second tie members comprising an elongated spacer member having first and second ends, said spacer member being disposed transversely between said panels and raid first and second tie members being spaced longitudinally form one another, said tie member further comprising first and second elongated unit connecting members, said first unit connecting member being oriented generally vertically and positioned on the outward side of said first panel and said second unit connecting member being oriented generally vertically and positioned on the outward side of said second panel, said tie member having a first attachment means for attaching said spacer member to said first connecting member through said first opening in said first panel, and. a second attachment means for permanently attaching said tie member to said second connecting member through said first opening in said second panel;

said first unit connecting member having a first unit connection means adapted to cooperate with a second unit connecting means of a second form unit to provide for a first connection between said first form unit and said second form unit when said panels of said first form unit are placed above and in transverse alignment and abutment with respective panels of said second form unit.

said second unit connecting member having a third unit connection means adapted to cooperate with a fourth unit connecting means of a second form unit to provide for a second connection between said first form unit and said second form unit when said panels of said first form unit are placed above in transverse alignment and abutment with panels of said second form unit.
18. A form unit as claimed in claim 17 wherein said first attachment means comprises a recess extending substantially the full length of said first unit connecting member or said spacer member, said recess ending before reaching the upper portion of said first unit connecting member or said spacer member, and a corresponding fin extending substantially the full length of said spacer member or said first unit connecting member, said fin to be received through said first opening of said first panel to connect with said recess positioned on the other of said unit connecting device or said spacer member.
19. A form unit as claimed in claim 18 wherein said second attachment means also comprises a recess extending substantially the full length of said first unit connecting member or said spacer member, said recess ending before reaching the upper portion of said first unit connecting member or said spacer member, and a corresponding fin extending substantially the full length of said spacer member or said first unit connecting member, said fin to be received through said first opening of said first panel to connect with said recess positioned on the other of said unit connecting device or said spacer member.
20. A form unit as claimed in claim 19 wherein said first and second connection means are adapted to provide for a first and a second releasable connection between said first and second form units.
21. A form unit as claimed in claim 20 wherein said first connection means comprises a recess in an upper portion and a lower portion of said first and second unit connecting members of said first form unit and a recess in an upper portion and a lower portion of said first and second unit connecting members of said second form unit which is formed with a pair of opposite facing side walls, each of said side walls having a saw-tooth profile, and a linking element, said linking element having an arrow formation located at each end proximate the ends of said unit connecting members, said arrowhead formation having an arrowhead, said saw-tooth side walls being engaged by said arrowhead, and said connection means being adapted to permit said arrowhead to be axially inserted into said recess, but resisting axial removal of said arrowhead from said recess.
22. A form unit as claimed in claim 21 wherein said second connection means comprises a recess in an upper portion and a lower portion of said first and second unit connecting members of said first form unit and a recess in an upper portion and a lower portion of said first and second unit connecting members of said second form unit which is formed with a pair of opposite facing side walls, each of said side walls having a saw-tooth profile, and a linking element, said linking element having an arrow formation located at each end proximate the ends of said unit connecting members, said arrowhead formation having an arrowhead, said saw-tooth side walla being engaged by said arrowhead, and said connection means being adapted to permit said arrowhead to be axially inserted into said recess, but resisting axial removal of said arrowhead from said recess.
23. A form unit as claimed in claim 22 wherein said arrow formations and said recesses are adapted to provide for lever access to said recesses when said arrowheads are received therein, whereby said lever access permits the transverse dislodgement of said arrowheads from said recesses, to provide for releasable connections between aid first and second form unit.
24. A system as claimed in claim 4, wherein said arrowheads or arrowhead formations of said unit connecting are notched to facilitate easier insertion of said arrowheads into said recess.
25. A kit as claimed in claim 16, wherein said first and second unit connecting members are elongated and oriented generally vertically against the outward facing surfaces of said first and second panels respectively.
26. A form system as claimed in claim 1, wherein said spacer member of said first unit has an upper surface and a lower surface, and both said upper surface and said lower surface have at least one set of laterally aligned claw members depending therefrom.
27. A form system as claimed in claim 1 further comprising third and fourth form units each having:
- first and second panels positioned in spaced relation to each other, each of said first and second panels having an inwardly facing surface and an outwardly facing surface and a first opening therethrough;
- at least one tie member, said tie member comprising a spacer member having first and second ends, said spacer member being disposed transversely between said panels, said tie member further comprising first and second unit connecting members, said first unit connecting member being positioned away from said inward facing surface and proximate said outward facing surface of said first panel and said second unit connecting member being positioned away from said inward facing surface of said second panel, said tie member having a first attachment providing an attachment of said spacer member to said first unit connecting member through said first opening in said first panel, and a second attachment means providing for attachment of said tie member to said second connecting member through said first opening in said second panel;
- said first and second unit connecting members of said having a first and second connection means respectively, to permit said first unit connecting member of a first form unit to be connected with one of said first and second connecting members of a second form unit, and said second unit connecting member of said first form unit to be connected with the other of said first and second connecting members of said second form unit, when said panels of said first form unit is placed above and is in transverse alignment and abutment with respective panels of said second form unit;
said first, second, third and fourth form units being adapted such that said first and second panels of said first form unit may be placed in lateral abutment and transverse alignment with said first and second panels of said third form unit, and said first and second panels of said third form unit, and said first and second panels of said second form unit may be placed in lateral abutment and transverse alignment with said first and second panels of said fourth form unit, whereby said first, second, third and fourth form units provide a pair of spaced continuous panel walls.
28. A form system as claimed in claim 1, wherein said first and second unit connecting members of said first, second, third and fourth form units are elongated and oriented generally vertically against the outward facing surfaces of said the respective first and second panels.
29. A form system as claimed in claim 27, wherein said spacer members of said first form unit and said third form unit have an upper surface with at least one set of laterally aligned indentations depending therefrom, such that when said first and third form units are in lateral abutment with each other, a length of reinforcement may be supported laterally between the indentations of said first and third form units.
CA 2209251 1997-07-04 1997-07-04 Form system Expired - Fee Related CA2209251C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA 2209251 CA2209251C (en) 1997-07-04 1997-07-04 Form system

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
CA 2209251 CA2209251C (en) 1997-07-04 1997-07-04 Form system
CN 98807605 CN1108423C (en) 1997-07-04 1998-07-03 Tie assembly for wall form system
EP19980930600 EP0996793A1 (en) 1997-07-04 1998-07-03 Tie assembly for a wall form system
CA 2294823 CA2294823C (en) 1997-07-04 1998-07-03 Tie assembly for a wall form system
PCT/CA1998/000634 WO1999001626A1 (en) 1997-07-04 1998-07-03 Tie assembly for a wall form system
US10888910 US20050028467A1 (en) 1997-07-04 2004-07-12 Tie assembly for a wall form system

Publications (2)

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CA2209251A1 true CA2209251A1 (en) 1999-01-04
CA2209251C true CA2209251C (en) 2001-10-02

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US (1) US20050028467A1 (en)
EP (1) EP0996793A1 (en)
CN (1) CN1108423C (en)
CA (1) CA2209251C (en)
WO (1) WO1999001626A1 (en)

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Also Published As

Publication number Publication date Type
US20050028467A1 (en) 2005-02-10 application
CN1265170A (en) 2000-08-30 application
CN1108423C (en) 2003-05-14 grant
WO1999001626A1 (en) 1999-01-14 application
CA2209251A1 (en) 1999-01-04 application
EP0996793A1 (en) 2000-05-03 application

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