B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 65/44 (2006.01) B29C 65/46 (2006.01) G06F 3/033 (2006.01)
Patent
CA 2494610
The invention proposes a device (20) of the type comprising a generator of control signals which comprises a mobile contact rod (70T) which is elastically restored by a spiral torsion spring (50T) whose cylindrical body (48T) is accommodated in the housing and whose second axial end (54T) is immobilized, characterized in that the span of second axial end of the spring is accommodated in a duct (46L, 46T) of the housing with at least one turn of this span which is thermowelded into the concave wall (47L, 47T) of the duct so as to immobilize it in rotation. According to the process, the thermowelding is carried out by heating by Joule effect of the turns by means of two electrodes (E1, E2).
L'invention se rapporte à un dispositif (20) du type comportant un générateur de signaux de commande pourvu d'une tige de contact mobile (70T) qui est ramenée à son état initial de manière élastique par un ressort de torsion en spirale (50T) dont le corps cylindrique (48T) est reçu dans un logement et dont la seconde extrémité axiale (54T) est immobilisée. Ce dispositif se caractérise en ce que, lors de l'extension du ressort, la seconde extrémité axiale du ressort est logée dans un conduit (46L, 46T) du logement avec au moins une spire de la longueur de ressort qui est thermosoudée dans la paroi concave (47L, 47T) du conduit afin d'immobiliser ce dernier vis à vis d'une rotation. Conformément au procédé, le thermosoudage est effectué par chauffage ohmique des spires au moyen de deux électrodes (E1, E2).
Bricaud Herve
Ferraton David
Pizard Yves
Itt Manufacturing Enterprises Inc.
Smart & Biggar
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