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| Number | Title | Issue Date |
| 7002119 | Device for liquid heating by electromagnetic induction and short-circuit using three-phase industrial frequency power The present invention relates to the field of electromagnetic induction and short circuit heating. The iron core in the heating device of present invention, which is in the form of EI, is completely made of multi-layered silicon steel sheets to form a closed three-p... | 02/21/2006 |
| 6617556 | Method and apparatus for heating a submarine pipeline A novel system for inductively heating a fluid conduit using an electrical cable located proximate the fluid conduit. Electricity is conducted to the cable in either a powering mode, in which a powered system is electrically coupled to the cable and subst... | 09/09/2003 |
| 6538239 | Induction heating device for metal pieces A magnetic heating device comprising three electrical coils, each coil being wound around a respective magnetic yoke having a gap therein, the three yokes being arranged such that the gaps are adjacent to each other or coincident, an article to be heated ... | 03/25/2003 |
| 6340811 | Induction-heated roller device Twelve induction coils axially arrayed on a roller are arranged into: a first group of induction coils delta connected induction coils excited by a three-phase voltage; a second group of star-connected induction coils being successively disposed while bei... | 01/22/2002 |
| 5352872 | System of supplying electric power to induction furnace In a system of supplying electric power to an induction furnace, a required heating power is directly supplied to the induction furnace from an ac synchronous generator driven by a prime mover, such as a diesel engine, via a single-phase coil. At the same... | 10/04/1994 |
| 5012487 | Induction melting An induction melting apparatus including a vessel for holding a melt of molten metal, an induction coil operatively associated with the vessel, and a power supply for providing power input to the induction coil. The power input has a melting component at ... | 04/30/1991 |
| 4999467 | Low-frequency electromagnetic induction heater Disclosed is a low-frequency electromagnetic induction heater which comprises at least six induction coils each having a circular configuration and positioned in a circular and symmetrical configuration. The coils form three sets of coils such that each s... | 03/12/1991 |
| 4814567 | Electro-thermic resonance system for heating liquid A liquid, such as water, is heated by the application of alternating electric current to resonate the molecules of the liquid. In a preferred embodiment, multi-phase alternating current is applied with one phase applied to a pair of capacitive elements in... | 03/21/1989 |
| 4647744 | Rotating heating roller of the type having a three phase circumferentially laminated leg core A rotating heating roller includes a laminated core and four circumferential yokes provided on the core. A three-phase winding is mounted on the leg core between the yokes. The winding is divided into three coils and adjacent end parts of the coils are ov... | 03/03/1987 |
| 4321449 | Apparatus for induction heating of metal products, particularly slabs and blooms An apparatus for heating blooms or slabs comprises a tunnel with a conveyor for supporting successive slabs and moving them along the length of the tunnel. The blooms rest flat on the conveyor rather than on edge. Polyphased inductors are located above an... | 03/23/1982 |
| 4321444 | Induction heating apparatus An induction heater, particularly for heating metal slabs, is constructed in modular form. Two sets of modules are spaced apart to form a gap for reception of a slab. Each module is slotted and is wound with a group of polyphase coils so as to produce a t... | 03/23/1982 |
| 4315124 | Heating modules for billets in inductive heating furnaces An inductive billet heating apparatus in an inductive heating furnace for billets of rectangular section uses a plurality of paired heater modules having a flat shape. The billets are fed by a plurality of paired roller elements and each heater module in ... | 02/09/1982 |
