Rotating heating roller of the type having a three phase circumf

Details Rotating heating roller of the type having a three phase circumf Rotating heating roller of the type having a three phase circumf

1985-07-10

1987-03-03

Leung, Philip H.

Electric heating

Metal heating

Of cylinders

219 1061A, 219 1071, 219 1075, 219 1079, H05B 614

Patent

active

046477446

ABSTRACT:
A rotating heating roller includes a laminated core and four circumferential yokes provided on the core. A three-phase winding is mounted on the leg core between the yokes. The winding is divided into three coils and adjacent end parts of the coils are overlapped. These overlapped coil parts generate a higher induced electromotive force when excited than that of the non-overlapped coil parts. The higher electromotive force contributes to a uniform distribution of the surface temperature of the rotating roller.

REFERENCES:
patent: 2748240 (1956-05-01), McArthur
patent: 2849584 (1958-08-01), Tudbury
patent: 3200230 (1965-08-01), La Bretoniere
patent: 3485986 (1969-12-01), Ross
patent: 3487187 (1969-12-01), Martens et al.
patent: 3562472 (1971-02-01), Cannon
patent: 4472616 (1984-09-01), Maurice et al.

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