WIPO logo
Mobile | Deutsch | Español | Français | 日本語 | 한국어 | Português | Русский | 中文 | العربية |
PATENTSCOPE

Search International and National Patent Collections
World Intellectual Property Organization
Search
 
Browse
 
Translate
 
Options
 
News
 
Login
 
Help
 
Machine translation
1. (WO1979001018) THERMOPLASTIC WELDING SLEEVE
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1979/001018    International Application No.:    PCT/CH1979/000060
Publication Date: 29.11.1979 International Filing Date: 30.04.1979
IPC:
B29C 61/06 (2006.01), B29C 65/34 (2006.01), B29C 65/68 (2006.01), B29C 70/82 (2006.01), B29D 23/00 (2006.01), F16L 47/03 (2006.01)
Applicants:
Inventors:
Priority Data:
4760/78 02.05.1978 CH
Title (EN) THERMOPLASTIC WELDING SLEEVE
(FR) MANCHON A SOUDER EN MATIERE THERMOPLASTIQUE
Abstract: front page image
(EN)A body sleeve (4) obtained by widening of a pipe is arranged on a mandrel on which spaced spirals (7) of a resistance wire (6) are wound. By heating the body sleeve (4), it is fixed onto the winding. An electric current circulating in the resistance wire causes the thermoplastic to melt and flow around the spirals for enclosing the latter completely by expansion. Further, the material forms projecting sections (8, 9) next to the winding. Hence, the spirals (7) are protected against accidentals shocks and the recessed end parts (5) of the inner wall which have been deformed inwards during manufacture require no further forming.
(FR)Un corps de manchon (4) obtenu par elargissement d"un tube, est dispose sur un mandrin sur lequel on a enroule des spires espacees (7) d"un fil a resistance (6). En chauffant le corps de manchon (4) on le fixe sur le bobinage. Un courant electrique circulant dans le fil a resistance fait fondre la matiere thermoplastique qui s"ecoule autour des spires se dilatant pour les enfermer completement. De plus, la matiere forme des troncons en saillie (8, 9) sur la partie voisine du bobinage. Ainsi, les spires (7) sont protegees contre les contacts accidentels et les parties d"extremite en retrait (5) de la paroi interieure, qui se sont deformes vers l"interieur pendant la fabrication, ne necessitent plus de formage ulterieur.
Designated States:
Publication Language: German (DE)
Filing Language: German (DE)