According to an embodiment, a coil spring is formed of a wire which is helically wound, and includes an end turn portion and an effective portion, and a surface of the wire in the end turn portion includes an area which is softer than a surface of the wire in the effective portion.


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    Title :

    COIL SPRING, SUSPENSION DEVICE, AND METHOD FOR PRODUCING COIL SPRING


    Additional title:

    SCHRAUBENFEDER, AUFHÄNGUNGSVORRICHTUNG UND VERFAHREN ZUR HERSTELLUNG EINER SCHRAUBENFEDER
    RESSORT HÉLICOÏDAL, DISPOSITIF DE SUSPENSION ET PROCÉDÉ DE PRODUCTION D'UN RESSORT HÉLICOÏDAL


    Contributors:

    Publication date :

    2024-05-08


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B21F Bearbeiten oder Verarbeiten von Draht aus Metall , WORKING OR PROCESSING OF METAL WIRE / B60G VEHICLE SUSPENSION ARRANGEMENTS , Radaufhängungen und Federungen für Fahrzeuge / C21D Veränderung der physikalischen Struktur von Eisenmetallen , MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS / F16F SPRINGS , Federn



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