US Patent No. 10,143,044

ELECTRIC INDUCTION HEATING OF STRIP OR SLAB MATERIAL


Patent No. 10,143,044
Issue Date November 27, 2018
Title Electric Induction Heating Of Strip Or Slab Material
Inventorship Jean Lovens, Embourg (BE)
Michel Fontaine, Aywaille (BE)
Assignee Inductotherm Corp., Rancocas, NJ (US)

Claim of US Patent No. 10,143,044

1. A rectangular sheet heating inductor having a variable cross sectional interior opening fora passage of a material through the variable cross sectional interior opening, the rectangular sheet inductor comprising:a fixed inductor side opposing a moveable inductor side; and
an adjustable first and second opposing sides, each of the adjustable first and second opposing sides comprising an outer fixed sheet inductor section and an inner moveable sheet inductor section, a first ends of the outer fixed sheet inductor sections of the adjustable first and second opposing sides connected to an opposing ends of the fixed inductor side and a first ends of the inner moveable sheet inductor sections of the adjustable first and second opposing sides connected to the opposing ends of the moveable inductor side;
a separate inductor side extension/retraction apparatus connecting a second end of the outer fixed sheet inductor section and a second end of the inner moveable sheet inductor section of each of the adjustable first and second opposing sides, the second end of the outer fixed sheet inductor section opposing the first end of the outer fixed sheet inductor section and the second end of the inner moveable sheet inductor section opposing the first end of the inner moveable sheet inductor section, each of the separate inductor side extension/retraction apparatus comprising a multi-hinged flexible apparatus having a series connected flexible electrical conductor sections configured in a wye when the adjustable first and second opposing sides are in a partially extended side position; a horizontally oriented closed wye when the adjustable first and second opposing sides are in a fully extended side position where the variable cross sectional interior opening is at a maximum size; and a vertically oriented open wye when the adjustable first and second opposing sides are in a fully retracted side position where the variable cross sectional interior opening is at a minimum size; and
a power source connection for connecting the rectangular sheet heating inductor to an alternating current source.