Class 264/404 - Electrical heating (e.g., resistance heat, etc.)

Subclass of Class 264 - Plastic and nonmetallic article shaping or treating: processes
Definition: Processes wherein the mold is heated by passage of electrical
No. of patents: 39
Last issue date: 04/05/2011

Number	Title	Issue Date
7919037	Process and composition for molding heatable articles and resulting product A process and a mold for molding parts. The mold is fabricated using a mixture of a viscous resin such as a gel coat containing nano particles. Electrical conductors are incorporated in the mold surface. The resulting mold in use is heatable by application of electr...	04/05/2011
7236166	High-resolution rapid manufacturing The present invention is a method for forming an object, the method comprising jetting a first material to form a plurality of layers that define a support structure increment, and extruding a second material to form a layer of the object. The layer of the object su...	06/26/2007
7168935	Solid freeform fabrication apparatus and methods An apparatus for formation of a three dimensional object comprising a sealed container; an electron beam subsystem capable of directing energy within said container; a positioning subsystem contained within said container; a wire feed subsystem contained within said...	01/30/2007
7132061	Electroconductive silicon nitride based composite sintered body and method for preparation thereof A conductive silicon nitride composite sintered body having an average grain size of 100 nm or less and whose relative roughness (Ra) after electric discharge machining is 0.3 μm or less can be obtained by grinding/mixing a silicon nitride powder and a metal powder...	11/07/2006
7052567	Inflatable heating device for in-situ repair of conduit and method for repairing conduit The apparatus of the present invention is generally characterized by a heating/inflation module having pressurizable interior and an attached heat curable pre-preg. In particular, an elastomeric, seamless composite is provided that includes a heating element dispose...	05/30/2006
6855446	Fuel cell, separator for fuel cell, and manufacturing method of separator A fuel cell composed of a plurality of cell function assemblies of each of which includes a set of spaced electrolytic membranes, two pairs of electrode plates in contact with opposite surfaces of each of the electrolytic membranes, a set of separators, and a set of...	02/15/2005
6846445	Method for rapid mold heating and cooling A method for rapidly heating a mold cavity to a predetermined temperature preferably above the softening or melting temperature of the molding material prior to and during the molding stage thereby increasing moldability and improving quality of molded parts. The mo...	01/25/2005
6803013	Process of making a meltblown web The present invention relates to an apparatus and method for forming meltblown material with a die assembly. The die may further include a die tip and a heating element positioned relative to the die tip apex to maintain the polymer material extruded from the die ti...	10/12/2004
6797224	Heated filling method A filling system includes a pressurized source of fill material and a pressure fill head wherein the fill head also includes a heating element positioned so as to transfer heat to fill material passing through the fill head. A method of filling holes using a fill ma...	09/28/2004
6776949	Polymer welding using ferromagnetic particles An apparatus and method for bonding polymeric materials is provided. The apparatus and method both utilize ferromagnetic materials in association with the polymeric materials to be bonded together. The polymeric materials, and the ferromagnetic material, are placed ...	08/17/2004
6649114	Method and apparatus for connecting objects by means of plastically deformable connecting bodies The apparatus for connecting objects by means of a plastically deformable connecting body comprises a shaping punch (4), a flow-restricting wall (5) closely surrounding the shaping punch and a gas supply lead (6) through which a gaseous medium can be intr...	11/18/2003
6524514	Method and device for producing fibrous materials from thermoplastic materials The invention relates to a method for producing fibrous materials from thermoplastic material, wherein thermoplastic material is molten and fed into a rotating reactor to form a molten film and the fibers are formed on and stretched out along an open edge...	02/25/2003
6383435	Method and apparatus for expanding and conferring a cup shape to the terminal junction segment of bi-axially oriented pipes made of thermoplastic material A method and apparatus for conferring a cup shape to the terminal junction segment of pipes that are bi-axially oriented longitudinally and circumferentially and hence very sensitive to diameter and length reduction through heat. The apparatus includes a ...	05/07/2002
6322651	Method for continuously producing expanded thermoformable materials A method for continuously producing expanded thermoformable materials comprising the steps of: conveying a thermoformable assembly by means of a conveyor through a plurality of heating zones, whereby the thermoformable assembly is heated to a temperature ...	11/27/2001
6309582	Method for making insignias with raised designs including two pressing steps A method and apparatus for making insignias with a raised design is capable of providing more aesthetic appearance to the insignias thus made. A base material consisting of a base sheet and a surface sheet overlaying the base sheet is prepared for making ...	10/30/2001
6238613	Apparatus and method for thermoplastic extrusion An electrically operated apparatus and method for altering the flow resistance experienced by a thermoplastic passing through a flow channel using one or more thermal valves having a short response time is described. The extrudate configuration of thermop...	05/29/2001
6220846	Apparatus for expanding and conferring a cup shape to the terminal junction segment of bi-axially oriented pipes made of thermoplastic material An apparatus for conferring a cup shape to the terminal junction segment of pipes that are bi-axially oriented longitudinally and circumferentially and hence very sensitive to diameter and length reduction through heat. The apparatus includes a furnace wh...	04/24/2001
6165391	Manufacture of optical data storage disc A method and apparatus forming a micro-relief pattern on a surface of an optical disc, which micro-relief pattern may form a holographic image in which a shim bearing a micro-relief pattern is pressed onto the surface of the disc and the apparatus used en...	12/26/2000
6146576	Method of forming advanced cured resin composite parts A unique composite material impregnated with a heat curable resin comprising a layer of conductive fibers and one or more resin carrying layers is utilized to reinforce utility poles by wrapping the material around a portion of the utility pole and causin...	11/14/2000
6063321	Method for forming a casting which includes an insert An insert is held in a cavity within a die set by a movable hold member. Molten resin is injected into the cavity when the insert is held by the hold member. The hold member is separated from the insert at a given timing. A surface of the hold member is h...	05/16/2000
5972274	Making of ceramic tube A conductive wire is electrically heated in a gas atmosphere, wherein a gas reacts with a constituent material of the conductive wire, under gravity-free or micro gravity state. A ceramic is formed on a surface of the wire sa an outer core through a react...	10/26/1999
5965080	Method of manufacturing starch-based biodegradable molded objects Using a metal mold (8) having an insulating section provided with vapor release sections, pressure outside the metal mold (8) is reduced, and heating is performed while releasing vapor produced thereby through the vapor release sections. This can prevent ...	10/12/1999
5912081	Method and paint firm for painting an object during a creative shaping The invention relates to a method for painting an object during a creative shaping process, for example an injection-molding, extrusion-molding, or back-foaming method with a paint film, as well as a paint film for working the method. In the method, a pai...	06/15/1999
5785910	Method for manufacturing laminate-molded products and apparatus therefor The present invention is to improve a laminate molding method and a laminate-molding apparatus for manufacturing molded products that have an external appearance of excellent quality. For this purpose, according to a molding method, by which a mold clampi...	07/28/1998
5770143	Method for liquid thermosetting resin molding using radiofrequency wave heating A method and apparatus for liquid thermoset resin or polymer molding using electromagnetic waves (particularly radiofrequency waves or microwaves), is described. The method and apparatus uses a metal mold (10, 212) with a cavity (401) for the molding as w...	06/23/1998
5687522	Formwork for building a concrete wall A formwork constructed of prefabricated elements, preferably for building a concrete wall. The formwork has two parallel walls that define a space that is filled with concrete laden with water, sand and large aggregates. An inner wall of the formwork has ...	11/18/1997
5656231	Method of forming advanced cured resin composite parts A unique composite material impregnated with a heat curable resin comprising a layer of conductive fibers and one or more resin carrying layers is utilized to reinforce utility poles by wrapping the material around a portion of the utility pole and causin...	08/12/1997
5641449	Method and apparatus for high-speed drying and consolidating of structural fiberboard Methods and apparatus for rapidly drying and compacting wet fiber mats are disclosed. Rapid drying is produced by heating the wet fiber mats with a combination of radiowave energy and conductive heating. As the fiber mats are heated, three-dimensional com...	06/24/1997
5595704	Method of using a shaping mold for making ultra-thin shaped rubber articles A shaping mold for the production of ultra-thin shaped rubber articles, has a main body which is dipped into a latex liquid so as to make the latex adhered to the surface of the main body. The adhered latex is heat-dried to form an ultra-thin shaped rubbe...	01/21/1997
5453149	Improved process for effecting electromagnetic bonding of plastic parts An improved electromagnetic bonding process wherein the plastic parts or components to be bonded are configured to be positioned with respect to each other at the point of bonding under a frictional or interference fitting relationship embraced by the int...	09/26/1995
5431869	Process for the preparation of polycrystalline silicon ingot This invention relates to a process for the preparation of polycrystalline silicon ingots by providing a first layer of coating on the inside walls of a mold with a slurry of silicon nitride powder in an organic binder dissolved in a solvent; charging the...	07/11/1995
5316464	Compact disc labeling system A compact disc labeling system for permanently imprinting a personalized label into the inner plastic ring of a compact disc. The invention includes a base member for receiving and securing a compact disc thereto, an interchangeable impact plate with outw...	05/31/1994
5173228	Method for forming a 360 degree skin handle A method for forming a 360 degree integral skin handle in a thermoplastic part for use in automotive trim products includes the steps of forming a mold with a partial recess closed by a removable plug and thereafter selectively directing heat from a first...	12/22/1992
5007818	Apparatus for thermoplastically shaping polymeric resins Apparatus for the thermoplastic shaping of polymeric resins is improved by the use of thin-film resistance heaters as the means of applying thermal energy to the resin. The heaters are mounted on the resin molding surfaces....	04/16/1991
4923647	Process for the vulcanization of laminar rubber products An apparatus and process for the vulcanization of laminar rubber products wherein the process comprises winding onto a drum an unvulcanized laminar rubber product together with a metallic band, applying a counter force to the metallic band as it is being ...	05/08/1990
4897028	Apparatus for thermoplastically processing synthetic polymeric resins Apparatus for the thermoplastic processing of polymeric resins is improved by the use of thin-film resistance heaters as the means of applying thermal energy to the resin. The heaters are mounted within the resin processing chamber and in particular the r...	01/30/1990
4576671	Method of manufacturing alate medical needle This invention relates to an improvement in the method of manufacturing alate medical needles. The base part of a needle is inserted into a thermoplastic resin tube and the inserted portion is set in a wing-forming mold. The thermoplastic resin is heated ...	03/18/1986
4496131	Apparatus for injection molding a foamed resin product having a smooth surface involving surface heating of the mold by applying high current low voltage electric power The invention comprises a method and apparatus to quickly heat a mold cavity surface or portions thereof just prior to the injection of a foamable plastic resin. The apparatus comprises one or more thin metal surface sheets or bands of high electrical res...	01/29/1985
4188194	Direct conversion process for making cubic boron nitride from pyrolytic boron nitride A process for making a sintered polycrystalline cubic boron nitride (CBN) compact by direct conversion of a pyrolytic, preferably substrate nucleated, boron nitride (PBN). Direct conversion takes place by subjecting the PBN to temperatures and pressures w...	02/12/1980

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Class 264/404 - Electrical heating (e.g., resistance heat, etc.)