device for lockförsedd trunk of metal for electrical connection between the lid and the channel and cable tv station equipped with such a device

摘要

Means at a trunking section made of metal, comprising a duct having a longitudinal front opening, which on both sides is provided with a groove (2) open in the direction of a plane (9) through the front opening and having two sides (3, 7) extending in said direction, and a cover for the closing of said front opening which cover is provided with longitudinal flanges which at the mounting of the cover on the duct engage into said grooves (2). The means is arranged to automatically create electrical contact between the cover and the duct at the mounting of the cover on the duct. Said means forms an integrated part of a groove of the duct and comprises at least one deformation of one of the sides (3, 7) of said groove (2) created by means of blanking or some other operation which deformation has at least one sharp edge which reaches into the groove (2) in order to co-operate with a flange of said cover at the mounting of the same. IMAGE