| 摘要 |
1,096,988. Sheathed type heating resistors. L. S. LITTLE. Nov. 14, 1966 [Nov. 23, 1965], No. 50934/66. Heading H5H. [Also in Division H2] In a sheathed type heating element, the sheath is filled with a suitable insulating material, for example magnesium or zirconium oxide 8, the heating element is connected to lead 9 and arranged around lead 9 is a resistor for use in protecting the heater against excessive temperature (see Division H2) connected between the end of the heating element and a terminal comprising a metallic ring or tube 10 partly embedded in the insulation material 8. |
