Abstract: A support for holding electronic devices in vehicles, with a single piece made of an elastic material which is easily manually deformable such that it can be pressure-fitted between the windscreen and the instrument panel. A cavity is made in the support, the size of said cavity being slightly smaller than that of the electronic device to be held, such that the device is held by pressure.

Abstract: The invention relates to a beam, a manner of securing the arms for supporting mirrors to the beam, a frame and a process for manufacturing the beam of a cylindrical parabolic solar collector. The beam (1) of the frame of a cylindrical parabolic solar collector is characterized in that the beam is cylindrical, hollow and has a circular cross-section; is formed by two or more profile parts or portions (2), with a length equal to that of the beam, with a cross-section in the form of a circular sector with an angle equal to the full angle divided by the number of parts forming the beam, with flanges (3) having a planar area of radial direction at the two ends; the flanges have made therein holes which coincide when they face one another, to allow the assembly of through elements. Said profile portions are made of sheet metal and are attached to one another by contacting the flanges such that a closed profile is formed, thereby forming a full beam.