Abstract: A hand held applicator for extruding molten thermoplastic material wherein a supply of the material is contained within an attached receptacle, which receptacle is provided with means for melting a portion of the material contained therein. The melted material within the receptacle is drawn under reduced pressure into a passageway extending through a heated member, and is extruded under increased pressure from a valve controlled orifice provided on one end of the passageway by means of either a motor driven conveyor screw or an electromechanical solenoid actuated piston. Heat for melting the plastic material is conducted from the heated member to the inside of the receptacle by means of a metallic duct member which communicatively connects the inside base region of the receptacle to the passageway. Melting of the plastic material is confined to the base region of the receptacle by thermally insulating the walls of the receptacle from the heated inner base region.

Abstract: A continuously operating superconducting magnetic separator for the segregated separation of particles with different magnetic susceptibility from a mixture such as a mixture of ferromagnetic and non-ferromagnetic ore and rock, in which the magnetic separator comprises a stationary superconducting magnet arrangement along with at least one carrier running through the magnetic field for the particles to be separated, which particles are moved by means of a conveyer chute through the magnetic field of large volume and past the carrier, which is in the form of a ferromagnetic grid, generating a field gradient and forcing the particles onto the grid, from which they are carried to appropriate collection devices.

Abstract: A method of coin discrimination and a coin discriminator are disclosed which utilize a coin impeller, the impeller comprising magnetic field means for accelerating each coin to a velocity primarily dependent upon the coin's characteristics of electrical conductivity and density, for discriminating among coins based upon the trajectory of the accelerated coin.