H - Electricity – 01 – B
Patent
H - Electricity
01
B
337/100, 339/73
H01B 3/00 (2006.01)
Patent
CA 1111523
ABSTRACT A bushing for leading an electrical connector through a wall with an intermediate flange for attachment in or to the wall and metallic end flanges on either side of the intermediate flange and two hollow insulating bodies clamped respectively between the intermediate flange and the end flanges. A conductor runs the whole length of the bushing and is movable relatively to at least one of the end flanges with a drawing member comprising two elongated metallic bodies connected between the end flanges. The metallic bodies connect respectively to a corresponding end flange at one end and overlap one another for a predetermined distance with a pressure transmitting and power transmitting connection between those ends of the metallic body not connected to the end flanges. The insulating bodies are typically ceramic material with the pressure transmitting member having a greater average thermal expansion per unit length than the first and second metallic body. The pressure transmitting member may also be metallic. The assembly is such that the coefficient of thermal expansion of the bushing conductor and drawing member assembly is approxi- mately equal to the coefficient of thermal expansion of the insulating body assembly.
365578
Borden Ladner Gervais Llp
Gould Inc.
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