ES390261A1 - Improvements in the mastiles to capture electromagnetic waves. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Improvements in the masts for capturing electromagnetic waves, characterized in that the sliding contact between the flexible connection for a receiving device and the elements that make up the extendable mast, is effected by means of a fixed cylindrical conductor bushing housed in an insulating tubular body retained in the upper end of a rigid metal sheath to be fastened in a vehicle, which insulating body is cylindrical and has two parts of different diameter, in which the upper part, of smaller internal and external diameter, has an externally threaded end area, while the the lower part has an outer axial groove for coupling with the sheath, a radial slot, an axial cavity in its wall giving rise to an inner fin, and a double hole for the aforementioned wall and fin, so that the aforementioned cap is fitted inside. Of said insulating body and introduces a longitudinal pin in said axial cavity, being retained the two pieces by a screw that passes through the holes of the insulating body and through the pin of the cap, and goes outside the cover, while retaining terminals attached to the flexible connection of the receiver, so that the extendable tubular elements of the mast, in concentric arrangement, contained in the sheath when folded, pass through the interior of the conductive cap so that the external element makes electrical contact with it for any position, taking place the fastening of the previous set on the body of the vehicle, through a hole thereof, by means of a device located around the upper part of the tubular insulating body and consisting of a lower fork, which presses against the inner face of the bodywork, and of a set of washers and of two pieces of hemispherical ball joint of variable position cut obliquely, to compensate the inclination that the aforementioned c the upper part of the mast, its coaxial elements are hidden and inaccessible, except with the use of a latch for this purpose with a curved end, which is inserted in a groove of an end fixed on the end of the central element of the mast, to be extracted by manual traction, dragging the other coaxial elements, having at the lower end of the sheath a plug with holes for drainage, being attached at the lower end of the outer coaxial element an insulating piece that separates it from the cover and serves as a guide in the sliding displacements of the mast. (Machine-translation by Google Translate, not legally binding)