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    • 11. 发明授权
    • Method of constructing bilateral heater unit
    • 双边加热器组合方法
    • US3934333A
    • 1976-01-27
    • US527186
    • 1974-11-26
    • John W. Churchill
    • John W. Churchill
    • H05B3/06H05B3/48H05B3/52H05B3/00
    • H05B3/52H05B3/06H05B3/48Y10T29/49083Y10T29/49091Y10T29/49098
    • A heater unit of bilateral construction is formed by forming a resistor assembly of a resistor helix extending between cylindrical terminals and overlapping the same, inserting the assembly in a sheath tube, filling the tube with MgO powder, placing laminated mica end plugs over the terminals and extending into the ends of the tube, bending the tube into a U-shape, pressing the legs of the U together and feeding the pressed unit through swaging dies to deform the tube over the entire length thereof to provide a heater unit of substantially circular cross section and having two legs of substantially semicircular cross section. The resistor helix in the area of the leg portions has a cross-sectional shape corresponding to the cross-sectional shape of the sheath and the terminals and mica plugs within the sheath are flattened to provide a similar cross-sectional shape thereby locking the terminals within the sheath.
    • 通过在圆柱形端子之间形成电阻螺旋形的电阻器组件,并将其重叠,形成一个双面结构的加热器单元,将组件插入鞘管中,用MgO粉末填充管,将层叠的云母端塞放置在端子上, 延伸到管的端部,将管弯曲成U形,将U形腿的一体压在一起,并通过型锻模具将压制单元供给到模具上,使管在其整个长度上变形,从而提供基本圆形交叉的加热器单元 并且具有基本上半圆形横截面的两条腿。 腿部区域中的电阻螺旋线具有对应于护套的截面形状的横截面形状,并且端子和鞘内的云母塞被平坦化以提供类似的横截面形状,从而将端子锁定在 护套。