ES137904U - Perfected trailer magnet, particularly for magnetic tacometers. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Improved drag magnet, particularly for magnetic tachometers, which being of the type comprising, associated, a magnet body, a support and control shaft and an element for compensation of the variations of magnetism due to temperature, the whole performed in a single piece, substantially disc-shaped, by injecting a mixture of thermoplastic material and magnetic ferrite, and with the incorporation of an end of the shaft, support and said compensation element, characterized by the fact that the profile peripheral of the body to disgust comprises one or more pairs of protruding bodies or appendages, with functions of polar expansions, the compensation element being constituted by a plate associated to a face of the disc and having the same profile thereof, said body being a disc substantially circular, and the corresponding circumference interrupted by lateral gaps that limit and separate said appendages or expansio polar, which are uniformly distributed on the circumference, either in number of four, or six, having also provided that the aforementioned body to disk has a rectangular general configuration and said appendices or polar expansions have external peripheral profiles that are part of a single circumference. (Machine-translation by Google Translate, not legally binding)