Connection component for together plastic elements by thermal welding
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United States of America Patent
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Aug 25, 1992
Grant Date -
N/A
app pub date -
Nov 27, 1990
filing date -
Nov 29, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a connection component equipped with an electrical resistor for the welding of elements made of heat-fusing plastic. According to the invention, the resistor takes the form of a single wire coated with an electrically insulating layer and having points of intersection, the coating layer fusing at a temperature between the fusion temperature of the components to be joined together and their temperature of thermal damage, so that short-circuits are generated on the wire and so that the stopping of the supply of current to the latter is commanded. The invention is used particularly for the thermal welding of polyethylene pipes used in the gas industry.
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