Metal deforming – By extruding through orifice – By rotating impeller means
Reexamination Certificate
2011-07-19
2011-07-19
Sullivan, Debra M (Department: 3725)
Metal deforming
By extruding through orifice
By rotating impeller means
C072S268000, C072S342700
Reexamination Certificate
active
07980110
ABSTRACT:
Apparatus for continuous extrusion of an aluminium sheathing free from imperfections or discontinuities onto a core cable, such as an insulated copper cable, includes a rotatable wheel formed with a pair of circumferential grooves arcuate tooling bounding radially outer portions of the respective grooves, a die body provided with divergent exit apertures discharging laterally to an extrusion chamber through 90° elbows and short divergent passages at diametrically opposed locations. An electrical induction heater includes coils of copper tubing connected to an electrical power source and to a coolant circulating device is positioned at a radially outer portion of the die body and is energizable to supply heat to the die body to maintain a uniform temperature of approximately 480° C., controlled by signals from thermocouples around the extrusion chamber.
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BWE Limited
Shlesinger & Arkwright & Garvey LLP
Sullivan Debra M
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