Static molds – Mold element – In situ construction engineering or building type
Patent
1993-08-06
1994-11-29
Nguyen, Khanh
Static molds
Mold element
In situ construction engineering or building type
249 44, 249 47, 249195, 249196, E04G 1704
Patent
active
053682726
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to a formwork panel having at the edges thereof edge webs which project at right angles to the forming surface and are made of flat material, the cross section of the edge webs running from the forming surface to a free edge. This cross-sectional course is directed away from the forming surface at least at the free edge and the free edge limits the greatest width of the edge web. In the position of use, the edge webs have lying indirectly or directly thereagainst the edge webs of neighbouring formwork panels and are engaged by connecting means for fastening together the edge webs lying against ore another.
BACKGROUND OF THE INVENTION
Such a formwork panel where the edge webs of aligned and contiguous formwork panels lie directly against one another is known from German Patent Specification No. 21 37 505. Bolts traversing keyhole-like openings in the edge webs serve as the connecting means for fastening together the edge webs lying against one another and have a stop projection and a counter-stop arranged in spaced relationship thereto.
German Patent Specification No. 24 03 325 discloses comparable formwork panels where the edge webs of adjacent formwork panels lie indirectly against one another, that is to say, intermediate parts or spacers are provided between them, while compensating elements may also be provided between such edge webs of aligned, neighbouring formwork panels.
In these known solutions, the edge webs are plane to enable them to lie tightly against one another or to enable intermediate parts to be inserted. However this results in that the stiffness of these edge webs is limited and hence the formwork panels can have only a limited loading capacity.
It is therefore also known, e.g. from German Offenlegungsschrift 27 16 864, to use hollow sections instead of edge webs of flat material. Hollow sections have a greater stiffness, but they also lead to edge webs with large cross sections and correspondingly elaborate connecting means, as well as to considerably higher weights of the formwork panels. In the case of the profiled edge webs according to German Offenlegungsschrift 27 16 864, a C-shape has been selected as the cross section, wherein that free edge of the section which is remote from the forming surface is directed towards the latter and hence does not limit the greatest width of this edge section.
SUMMARY OF THE INVENTION
The object underlying the invention is therefore to provide a formwork panel of the kind mentioned at the outset, in which the edge webs may be of flat material, but one can nevertheless attain a high stiffness accompanied by good sealing of edge webs lying against one another.
This object is accomplished in that between the two aligned longitudinal edges of the edge web which serve as a seating for the edge web of the neighbouring formwork panel is an area receding relative to these longitudinal edges in a direction towards the centre of the formwork panel. In this receding area is at least one oppositely recessed channel or bead open towards the centre of the formwork panel.
The solution is based on the realization that, as is already known from hollow sections, it is sufficient for sealing abutting edge webs if in each case two edge areas are available as sealing surfaces and seating surfaces. Therefore considerably greater stiffness can be imparted to the edge web consisting of flat material through the described shaping of its crosspiece, as compared with an edge web which is plane throughout. In addition, the further advantage ensues that clamps can have their clamping jaws applied to the beads in the manner as is also known when the edge webs are constituted by hollow sections. Hence these edge webs presenting a stiffened cross-sectional profile but nevertheless consisting of flat material can be engaged by clamps as the connecting means. Clamps have the advantage that they permit of being applied to virtually any locations of the edge webs, and that they allow for a high clamping force and thereby enable go
REFERENCES:
patent: 2870516 (1959-01-01), Jennings
patent: 3414230 (1968-12-01), Brosseau
patent: 4529163 (1985-07-01), Dringler
patent: 4821995 (1989-04-01), Merkel
patent: 4881716 (1989-11-01), Dingler
patent: 5273251 (1993-12-01), Badstieber
Nguyen Khanh
Paschall-Werk G. Maier GmbH
LandOfFree
Formwork panel having at the edges thereof projecting edge webs does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Formwork panel having at the edges thereof projecting edge webs , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Formwork panel having at the edges thereof projecting edge webs will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-69245