EP 0410161 B2 19960807 - Method and device for providng perforations on spacers for insulated glass panes
Title (en)
Method and device for providng perforations on spacers for insulated glass panes
Title (de)
Verfahren und Vorrichtung zum Anbringen von Perforationen an Abstandhaltern von Isolierglasscheiben sowie Abstandhalterrahmen
Title (fr)
Méthode et dispositif pour établir des perforations aux écarteurs pour panneaux isolants
Publication
Application
Priority
DE 3924872 A 19890727
Abstract (en)
[origin: EP0410161A1] To provide perforations on the webs (4) of spacer frames (1) formed from hollow sections (2), the said webs facing the pane interspace (5) of an insulated glazing unit, the region of perforation is first of all deep drawn in the direction of the inside of the section (2) and a hole is then punched in the deepest point of the deformation (7a) thereby obtained. This deep-drawn region is then rolled in such a way that the depth of this deep drawing is somewhat reduced and the perforation (6a) is thereby pressed to in a dust-tight manner. This can be achieved in a simple manner with a roll (9) having a circumferential groove (10), giving rise overall to a spacer frame (1) which has pressed-to openings (6) at the deepest - or highest - point of knob-shaped depressions (7) on its webs (4) facing the pane interspace (5), with the result that pulverised or crushed desiccant dust is prevented from falling out not only by the reduction in the cross-section of the openings (6) when pressed to, but also by their raised position relative to the upper horizontal web (4) of the hollow section (2). <IMAGE>
IPC 1-7
IPC 8 full level
B21D 31/02 (2006.01); B21D 53/74 (2006.01); E06B 3/673 (2006.01)
CPC (source: EP US)
B21D 31/02 (2013.01 - EP US); B21D 53/74 (2013.01 - EP US); E06B 3/67304 (2013.01 - EP US); Y10T 29/49432 (2015.01 - EP US); Y10T 29/496 (2015.01 - EP US); Y10T 29/49627 (2015.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0410161 A1 19910130; EP 0410161 B1 19930421; EP 0410161 B2 19960807; AT E88389 T1 19930515; DE 3924872 A1 19910221; DE 3924872 C2 19910516; DE 59001239 D1 19930527; DK 0410161 T4 19961021; ES 2041082 T3 19931101; US 5105643 A 19920421
DOCDB simple family (application)
EP 90112557 A 19900702; AT 90112557 T 19900702; DE 3924872 A 19890727; DE 59001239 T 19900702; DK 90112557 T 19900702; ES 90112557 T 19900702; US 55857890 A 19900727