EP 0187656 A2 19860716 - Method of making male elements for hinge devices and hinge devices obtained thereby.
Title (en)
Method of making male elements for hinge devices and hinge devices obtained thereby.
Title (de)
Verfahren zur Herstellung von Scharnierstiften und damit erzeugte Scharniere.
Title (fr)
Procédé de fabrication d'éléments mâles de charnières et charnières ainsi obtenues.
Publication
Application
Priority
IT 8250385 A 19850109
Abstract (en)
The present invention has for its subject a hinge and a method of forming a closed cavity hollow male hinge. The method comprises a first processing step consisting of shearing a section from a cylindrival drawn blank followed by cold impact reverse-extrusion by means of a punch and die action; that step causes the material to be upturned laterally to form a constant pattern hollow body having an open end. Thereafter, there is carried out on said hollow body, as by striking with a die, a reduction of one portion thereof at the open end, thus defining a hollow pin. The open end of the latter is then upset and stopped to make the hollow body watertight.
IPC 1-7
IPC 8 full level
B21K 13/02 (2006.01); E05D 5/10 (2006.01)
CPC (source: EP)
B21K 13/02 (2013.01); E05D 5/10 (2013.01); E05D 2005/102 (2013.01)
Designated contracting state (EPC)
CH DE FR IT LI
DOCDB simple family (publication)
EP 0187656 A2 19860716; EP 0187656 A3 19861001; EP 0187656 B1 19900411; DE 3670224 D1 19900517; ES 296110 U 19871016; ES 296110 Y 19880416; ES 551291 A0 19870501; ES 8704772 A1 19870501; IT 1187411 B 19871223; IT 8582503 A0 19850109
DOCDB simple family (application)
EP 86100126 A 19860107; DE 3670224 T 19860107; ES 296110 U 19870115; ES 551291 A 19860109; IT 8250385 A 19850109