B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
327/76
B29C 65/34 (2006.01) B23K 11/25 (2006.01)
Patent
CA 1125388
ABSTRACT OF THE DISCLOSURE Pipe components, i.e., pipes, fittings and valves, made of weldable plastic, are connected to each other by means of electrically welded joints. The welding process is made possible by the fact that a welding collar is connected to the output of the welding device. A power monitor permits the switching on of a switch stage of the welding current circuit. Thermal energy is generated by squaring the welding or the line voltage in a pulse generator which produces a pulse frequency that is dependent on this value. The pulses of this pulse fre- quency are summed in a counter. Once a count value that corres- ponds to the thermal energy has been reached, the switch stage is switched off. In the event that the count value is not reached a function monitor generates a warning signal.
326181
Marks & Clerk
Sturm Werner
LandOfFree
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