Prefabricated formwork
First Claim
1. In a formwork for molding a substantially vertical wall of a hardenable material, a prefabricated formwork module comprising a first sheathing panel, a second sheathing panel and a plurality of collapsible connecting elements retaining the first and second sheathing panels and extending at least partially therebetween in a spaced-apart relationship, the first and second sheathing panels having similar outlines with corresponding edges wherein each said collapsible element has at least a portion thereof, between the sheathing panels, which is deformable such that they allow the first ad second sheathing panels to collapse against and with the corresponding edges in relative alignment with each other, the formwork and connecting elements being constructed and assembled at a factory site remote from the building site such that during storage and transportation of the formwork modules each formwork module is collapsed with the first and second sheathing panels adjacent one another and with the corresponding edges in relative alignment with each other with the connecting elements collapsed and wherein the first and second sheathing panels are spaced apart to the full extent of the connecting elements during assembly at the building site.
1 Assignment
0 Petitions
Accused Products
Abstract
A prefabricated collapsible formwork module is assembled at a factory site, including the provision of a pair of sheathing panels which can be made of insulating material, as well as the mounting of the vapor barrier, the filler strips, bearing blocks, and flexible or collapsible connecting elements extending between the panels extending between the panels to retain the panels when they are being erected. The sheathing panels may also have a waterproof membrane applied thereto, and the concrete reinforcement is assembled between the sheathing panels at the factory site. When the formwork module is fully assembled, it is then collapsed, that is, by moving one sheathing panel against the other including collapsing the collapsible connecting elements and sandwiching the concrete reinforcement which is preferably in the form of a grid, and the formwork module can then be stored and transported to a building site. At the building site, the formwork module is spread apart to the full extent of the connecting elements and spacers are provided between the sheathing panels for maintaining the panels apart. Typical joint mating means are installed at the edge area of the sheathing panels to form joints with adjacent panels.
119 Citations
35 Claims
- 1. In a formwork for molding a substantially vertical wall of a hardenable material, a prefabricated formwork module comprising a first sheathing panel, a second sheathing panel and a plurality of collapsible connecting elements retaining the first and second sheathing panels and extending at least partially therebetween in a spaced-apart relationship, the first and second sheathing panels having similar outlines with corresponding edges wherein each said collapsible element has at least a portion thereof, between the sheathing panels, which is deformable such that they allow the first ad second sheathing panels to collapse against and with the corresponding edges in relative alignment with each other, the formwork and connecting elements being constructed and assembled at a factory site remote from the building site such that during storage and transportation of the formwork modules each formwork module is collapsed with the first and second sheathing panels adjacent one another and with the corresponding edges in relative alignment with each other with the connecting elements collapsed and wherein the first and second sheathing panels are spaced apart to the full extent of the connecting elements during assembly at the building site.
- 29. In a formwork for molding a substantially vertical wall of a hardenable material, a prefabricated formwork module comprising a first sheathing panel, a second sheathing panel and a plurality of collapsible connecting elements retaining the first and second sheathing panels and extending at least partially therebetween in a spaced-apart relationship, wherein the connecting elements pass through the sheathing panels and abut at each end against bearing blocks located on the exterior face of at least one of the sheathing panels, wherein the collapsible connecting element is in the form of at least three links in series connected end to end by two hinging means such as to allow the connecting element to fold when the formwork module is collapsed, the formwork module and connecting elements being constructed and assembled at a factory site remote from the building site such that during storage and transportation of the formwork modules, each formwork module is collapsed with the first and second sheathing panel adjacent one another with the connecting elements collapsed and wherein the first and second sheathing panels are spaced apart to the full extent of the connecting elements during assembly at the building site.
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33. In a formwork for molding a vertical wall of a hardenable material, a prefabricated formwork module comprising a first sheathing panel, a second sheathing panel and a plurality of collapsible connecting elements retaining the first and second sheathing panels and extending at least partially therebetween in a spaced-apart relationship, wherein the connecting elements pass through the sheathing panels and abut at each end against bearing blocks located on the exterior face of at least one of the sheathing panels, wherein the connecting element is a collapsible link member of adjustable length and at least one of the bearing blocks is provided with a one way deformable bracket adapted to engage stop means provided on the connecting element and thereby retain the connecting element at a desired length, the formwork module and connecting elements being constructed and assembled at a factory site remote from the building site such that during storage and transportation of the formwork modules, each formwork module is collapsed with the first and second sheathing panel adjacent one another with the connecting elements collapsed and wherein the first and second sheathing panels are spaced apart to the full extent of the connecting elements during assembly at the building site.
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34. In a formwork for molding a substantially vertical wall of a hardenable material, a prefabricated formwork module comprising a first sheathing panel, a second sheathing panel and a plurality of collapsible connecting elements retaining the first and second sheathing panels and extending at least partially therebetween in a spaced-apart relationship, wherein the connecting elements pass through the sheathing panels and abut at each end against bearing blocks located on the exterior face of at least one of the sheathing panels, wherein the connecting element includes a first link member extending through a portion of the first sheathing panel and including a head associated with a bearing block on the exterior surface of the first sheathing panel, the first sheathing panel including a cavity to accommodate a portion of the first link member and a second rigid link member extending through a portion of the second sheathing panel and including a head associated with the bearing block on the exterior surface of the second sheathing panel and the second sheathing panel including a cavity accommodating a portion of the second link member and a plurality of telescoping link members extending between the first and second link members of the connecting element whereby when the module is being collapsed, the telescopic link parts telescope within the cavities formed within the first and second sheathing panel, the formwork module and connecting elements being constructed and assembled at a factory site remote from the building site such that during storage and transportation of the formwork modules, each formwork module is collapsed with the first and second sheathing panel adjacent one another with the connecting elements collapsed and wherein the first and second sheathing panels are spaced apart to the full extent of the connecting elements during assembly at the building site.
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35. A prefabricated formwork structure for molding a substantially vertical wall of a hardenable material, including a prefabricated formwork module comprising a first sheathing panel, a second sheathing panel and a plurality of collapsible connecting elements retaining the first and second sheathing panels and extending at least partially therebetween in a spaced-apart relationship, the formwork module and connecting elements being constructed and assembled at a factory site remote from the building site such that during storage and transportation of the formwork modules each formwork module is collapsed with the first and second sheathing panels adjacent one another with the connecting elements collapsed and wherein the first and second sheathing panels are spaced apart to the full extent of the connecting elements during assembly at the building site, a spacer in the form of an elongated member extending between the first sheathing panel and the second sheathing panel at the building site when the formwork module is being erected, wherein th spacer includes a plurality of collapsible rigid links between the first and second panels respectively and the spacer is preinstalled at the factory site.
Specification