Electric heating – Metal heating – Of cylinders
Patent
1983-09-19
1985-06-11
Leung, Philip H.
Electric heating
Metal heating
Of cylinders
219 1057, 219 1049R, 219 1071, 219 1079, 264 27, 228 58, 1563796, 4251748R, H05B 610
Patent
active
045230684
ABSTRACT:
An apparatus and method for fusing the ends of battery cell terminal posts and the ends of hollow bushings fixed in the plastic cover of a battery being assembled and within which the terminal posts are concentrically disposed. The apparatus includes a pair of induction heating coils which each concentrically support a mold cavity insert adapted to receive the ends of the terminal posts and bushings to be fused and a ferrite insert adapted to concentrate induced current in the ends of the terminal post and bushings upon energization of the coils. An electrical control is provided for selectively generating a radio-frequency oscillating current in the coils to effect heating, melting, and fusion of the ends of the terminal posts and bushings to consistent fusion depths while the plastic battery case remains substantially uneffected. The control is adapted to substantially instantaneously energize the inductance heating coils to a first power level, maintain such power level for a first predetermined period for melting the ends of the terminal posts and bushings, and then gradually decrease the power level in a substantially uniform controlled manner for a second predetermined period to produce finished fused terminals with good surface appearance.
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Krivanek Louis
Lund David L.
Majumdar Senajit J.
Mullane William E.
GNB Batteries Inc.
Hipp Augustus J.
Leung Philip H.
Schlemmer Dennis R.
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