초록 ▼

A collapsible forming system for hardenable material is provided which includes at least one form unit having a pair of wall panels adjustable between operative and inoperative modes. The wall panels, when in either mode, are interconnected by a grid assembly. When the wall panels are in an operativ

A collapsible forming system for hardenable material is provided which includes at least one form unit having a pair of wall panels adjustable between operative and inoperative modes. The wall panels, when in either mode, are interconnected by a grid assembly. When the wall panels are in an operative mode, they are disposed in an upright spaced relation, and when in an inoperative mode, the wall panels are disposed in a proximate face to face relation. The grid assembly includes a first section which is disposed intermediate the panels and spans the distance therebetween when the panels are in an operative mode. The grid assembly also includes a pair of second sections which are disposed adjacent exterior surfaces of said wall panels when the latter are in either mode. Each second section has a first segment engaging the adjacent wall panel exterior surface and second segments projecting laterally from the first segment and extending into corresponding holes formed in the adjacent wall panel and having portions thereof protruding from the wall panel interior surface. The protruding portions are interlockingly engaged by portions of the grid assembly first section. The interlocking portions form pivotal connections having one upright axis adjacent the interior surface of one wall panel and a second upright axis adjacent the interior surface of the second wall panel of the pair.

대표청구항 ▼

A collapsible preassembled forming system for a hardenable material comprising a pair of wall panels of lightweight substantially inflexible material, said wall panels being adjustable between an operative mode wherein said panels are in a predetermined spaced relation for accommodating the hardenab

A collapsible preassembled forming system for a hardenable material comprising a pair of wall panels of lightweight substantially inflexible material, said wall panels being adjustable between an operative mode wherein said panels are in a predetermined spaced relation for accommodating the hardenable material therebetween and a collapsed inoperative mode wherein said panels are in an offset at least partially face to face proximate relation for transporting said wall panels while in the collapsed mode to a job site; and grid means pivotally interconnecting said panels, said grid means including a plurality of relatively spaced grid assemblies, each having a skeletal first section disposed intermediate said panels and defining a plane substantially perpendicular to said panels when the latter are in said operative mode and substantially parallel to interior surfaces of said panels when the latter are in an inoperative mode, said skeletal first section having a plurality of elongate first rods substantially spanning the distance between said panels when in the operative mode, and a plurality of elongate second rods affixed to said first rods and retaining the latter in a predetermined spaced relation, and a plurality of second sections, each having a first portion engaging an exterior surface of one wall panel and a plurality of relatively spaced second portions extending angularly from said first portion through said one wall panel and each having an end terminating adjacent an interior surface of said one wall panel, said terminating end and an adjacent end of a predetermined first rod coacting to form a pivotal connection between the skeletal first section and the said one wall panel, said grid means permanently affixing said wall panels to exterior surfaces of the hardenable material accommodated between said wall panels when in a hardened state.