Method of manufacturing an electric lamp filament having a coiled-coil body portion with oriented off-set legs
    1.
    发明授权
    Method of manufacturing an electric lamp filament having a coiled-coil body portion with oriented off-set legs 失效
    制造具有带有偏心离合器的线圈体部分的电灯丝的方法

    公开(公告)号:US3670377A

    公开(公告)日:1972-06-20

    申请号:US3670377D

    申请日:1970-05-12

    Inventor: MICHAEL JACOB F

    CPC classification number: H01K3/02

    Abstract: A coiled-coil filament of refractory metal wire having longitudinally depending legs at each end that are joined to the coil barrel by open primary turns which are permanently bent through predetermined angles. The filament is initially wound as a continuous coil and, after the second coiling operation has been completed and the primary and secondary mandrels have been removed, selected primary turns in each of the then transversely extending legs are bent around an abutting stationary anvil to reposition the legs in the desired off-set relationship with the coil barrel.

    Abstract translation: 难熔金属线的卷绕线圈,其每端具有纵向悬垂的腿,通过敞开的初级匝连接到线圈筒,该主匝永久地弯曲预定的角度。 灯丝最初被卷绕成连续的线圈,并且在第二卷绕操作已经完成并且主和次级心轴已经被去除之后,在每个横向延伸的腿中的每一个中的选定的主匝围绕邻接的固定砧弯曲以重新定位 腿与线圈桶的期望偏离关系。

    Electric lamp filament having a coiled-coil body portion with oriented offset legs,and method of manufacture
    4.
    发明授权
    Electric lamp filament having a coiled-coil body portion with oriented offset legs,and method of manufacture 失效
    具有带定向偏心杆的线圈体部分的电灯丝及其制造方法

    公开(公告)号:US3588579A

    公开(公告)日:1971-06-28

    申请号:US3588579D

    申请日:1967-06-23

    Inventor: MICHAEL JACOB F

    CPC classification number: H01K1/14

    Abstract: A COILED-COIL FILAMENT OF REFRACTORY METAL WIRE HAVING LONGITUDINALLY DEPENDING LEGS AT EACH END THAT ARE JOINED TO THE COIL BARREL BY OPEN PRIMARY TURNS WHICH ARE BENT THROUGH PREDETERMINED ANGLES. THE PRIMARY WINDING IS FORMED AS A CONTINUOUS COIL AND, AFTER THE SECOND COILING OPERATION HAS BEEN COMPLETED AND THE PRIMARY AND SECONDARY MANDRELS HAVE BEEN REMOVED, SELECTED PRIMARY AND SECONDARY MANDRELS THE TRANSVERSELY EXTENDING LEGS ARE BENT AROUND AN ABUTTING STATIONARY ANVIL TO REPOSITION THE LEGS.

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