Abstract:
A method and apparatus for separating the end portions, or lids from a metal can including a cylindrical steel body portion and aluminum end portions wherein the aluminum end portions are melted adjacent the periphery of the body portion to allow separation from the can.
Abstract:
A workpiece formed from compacted, electrically conductive particles is heated by first passing a high-frequency current through the workpiece and then by inductively heating the workpiece.
Abstract:
A method and device is disclosed for ionizing gas at the plasma level thereof and comprises a gas chamber having an inlet for gas to be ionized and which inlet is connected to a source of gas so that the chamber can be filled and the gas maintained therein under a vacuum. An induction heating coil surrounds the chamber and the opposite ends of the coil are connected to a source of alternating current for energizing the coil to establish a magnetic field through the chamber. Flux concentrating laminations in the form of C-shaped plates of magnetic material surround the outer and axially opposite sides of the convolutions of the coil to increase the density of the flux field through the chamber to enhance maintenance of gas ionization.