Tearable core member and cold-shrink tube device having the...

H - Electricity – 02 – G

Patent

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H02G 15/18 (2006.01)

Patent

CA 2464647

In a cold-shrink tube device, to permit a core member to be readily and correctly removed from an elastic tube member without deteriorating an attaching operability onto an object wherein the core member holds an end region of an elastic tube member in an elastically expanded condition. A hollow tubular body of the core member is torn into a ribbon shape along a weakened line formed spirally and continuously over an entire axial length of the body. A ribbon-shaped region defined in a spiral on the body by the weakened line includes a major ribbon section having an axial dimension larger than an axial dimension of an end ribbon section defined, adjacent to a tearing-start end, between the weakened line and one axial end of the body. When the core member is arranged in the end region of the elastic tube member, the ribbon-shaped region of the body with around three coils, including the end ribbon section and the major ribbon section, is accommodated inside the end region.

L'invention concerne un dispositif de tube rétractable à froid permettant de retirer aisément et correctement un élément central situé dans un élément tubulaire élastique sans diminuer la possibilité d'attache à un objet, cet élément central maintenant une région terminale d'un élément tubulaire élastique dans un état d'étirement élastique. Un corps tubulaire creux de l'élément central est déchiré en forme de ruban le long d'une ligne prédécoupée s'étendant de manière spiralée et en continu sur toute la longueur axiale dudit corps. Une région rubanée spiralée définie sur ledit corps par ladite ligne prédécoupée comprend une section rubanée majeure présentant une dimension axiale supérieure à celle d'une section rubanée terminale définie à côté d'une extrémité de déchirement initial, entre la ligne prédécoupée et une extrémité axiale du corps. Lorsque l'élément central se trouve dans la région terminale de l'élément tubulaire élastique, la région rubanée du corps et approximativement trois bobines, ainsi que la section rubanée terminale et la section rubanée majeure, sont situées dans la région terminale.

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