FRICTION WELDING APPARATUS
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Abstract
APPARATUS FOR FRICTION WELDING PLASTIC ARTICLES AND ESPECIALLY OVERLAPPING PORTIONS OF PLASTIC STRAPPNG COMPRISES MEANS FOR PRODUCING A RELATIVE ROTARY MOTION BETWEEN THE PARTS TO BE WELDED WHILE THEY ARE PRESSED TOGETHER. PROVISION IS MADE FOR STOPPING THE RELATIVE MOTION WITH THE PLASTIC PARTS ORIENTED IN THE SAME RELATIVE POSITIONS AT THE END OF THE WELDING OPERATION AS AT THE BEGINNING.
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