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US 5,514,432 AGranted
Hollow profile for spacer frames for insulating glass panes
AssigneeNone recorded
InventorPeter Lisec
Life of this patent
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AssigneeNone recorded
InventorPeter Lisec
Estimating the term…
A hollow profile (1) that can be used as a spacer for insulating glass panes, consists of a metal strip with a U-shaped cross section that forms, with its crosspiece (6), outside wall (2) and, with its side parts (8, 10), folded over inward, side walls (4) of the hollow profile (1). The inside wall (3) of the hollow profile (1) is formed by the crosspiece (15) of a plastic strip with a hat-shaped cross section. The plastic strip has side parts (17) which are secured, with edges (18) folded over outward, on side walls (4) by clamping them in the space between side parts (8) and inward-folded edges (10) of the metal strip. The hollow profile can be produced continuously by a roll shaping process from a metal strip and from a plastic strip.
Hollow profile (1) for spacer frames for insulating glass panes with two side walls (4) parallel to one another for facing the glass panes of the insulating glass pane, an inside wall (3) and an outside wall (2), the outside wall (2) consisting of metal and the inside wall (3) consisting of plastic, the outside wall (2) and the inside wall (3) being folded over each other to form the side walls (4) of the hollow profile (1), such that the layers (8, 18, 10, 17) which form said side walls (4) lie against each other in midportions of each said side wall, each said side wall consisting of only four layers, namely, an outermost metal layer (8), next a plastic layer (18), next a metal layer (10), and finally an innermost plastic layer (17), said metal layers (8, 10) being integral with said outside wall (2) and said plastic layers (18, 17) being integral with said inside wall (3).
Dependencies are inferred from the claim text.
No related US applications are recorded in the indexed filing history.
Drawings are temporarily unavailable. Open the PDF at USPTO
Section members positioned at the edges of the glazing unit: of tubular shape
Polymer or resin containing [i.e., natural or synthetic]: elemental metal containing [e.g., substrate, foil, film, coating, etc.]
Polymer or resin containing [i.e., natural or synthetic]: open-ended, self-supporting conduit, cylinder, or tube-type article
Open-ended, self-supporting conduit, cylinder, or tube-type article: multilayer [continuous layer]
Term ended 14 Oct 2013 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.
The invention relates to a hollow profile for spacer frames for insulating glass panes with two side walls parallel to one another to be turned toward the glass panes of the insulating glass pane, an inside wall and an outside wall.
Hollow profiles for spacer frames for insulating glass panes are known in the most varied embodiments. Thus, in addition to extruded hollow profiles, hollow profiles produced by roll molding from a metal strip are also known. As the material for the hollow profile, mainly aluminum is used in addition to steel sheet.
A profile for spacer frames has also become known that has a U-shaped cross section and consists of a crosspiece forming the outside wall and two side parts adjacent to the glass panes of the insulating glass pane.
Further details and advantages of the hollow profile according to the invention come out from the following description of the drawings, in which embodiments of the invention are represented. There are shown in: FIG. 1, a hollow profile in cross section and FIG. 2, the production stages of a hollow profile according to the invention.
The hollow profile shown in FIG. 1 has a basically rectangular cross section with an outside wall 2, an inside wall 3 and two side walls 4. Side walls 4 are those parts of hollow profile 1 by which the latter is attached to both glass panes of an insulating glass pane, for the purpose of which, in a way known in the art, an adhesive layer is applied on the outside of side walls 4. Of course, the hollow profile according to the invention is not limited to the basically rectangular cross section represented, but the hollow profile according to the invention can also have the cross section of a so-called "economical profile."
Outside wall 2 and both side walls 4 are made from a metal strip whose crosspiece 6 forms the outside wall, in contrast to which both its side parts 8 form side walls 4. Here, side parts 8 are made integral with crosspiece 6 by lengthwise bending sites 7.
Exposed edge areas 10 of side parts 8 are folded over, inward, around bending sites 9 running lengthwise so that, between side parts 8 and parts 10, folded over and inward, of side parts 8, a space 11 remains open.