Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 7852901 | Method and apparatus for manufacturing high-purity alloy An electromagnetic induction heat device to heat a first metal mineral stone and a second mineral stone to form a melting mixture liquid without stifling. The device keeps a temperature of the melting mixture liquid between solidus and liquidus of binary alloy phase... | 12/14/2010 |
| 7264766 | Feed apparatus and portable dust collector A feed apparatus feed apparatus for delivering particulate material to a foundry furnace having disposed therein a furnace form defining an annulus with the furnace exterior wall for receipt of the particulate material. The novel feed apparatus broadly includes a co... | 09/04/2007 |
| 6600769 | Device and method for manufacturing a preform The invention relates to a device for manufacturing a preform, wherein a carrier tube is collapsed to a preform, which device comprises a heating element forming a cylindrical envelope, which envelope defines an annular inlet opening and an annular outlet... | 07/29/2003 |
| 6537485 | Metal melting apparatus A melting apparatus having a compact structure, of economical equipment cost, enabling to vacuum melting and refining at high productivity. A metal melting apparatus has a structure in which a refractory furnace wall 12 is furnished on an outer circumfere... | 03/25/2003 |
| 6478839 | Method of induction-heat melting treatment of metal-oxide-containing powders and device therefor A device for induction-heat melting treatment of metal-oxide-powders includes a closed hopper, a heat-resistant piping, for supplying a powder to an induction heating pipe which is made of dielectric material and comes in contact with the lower end part o... | 11/12/2002 |
| 6454829 | Method and device for the continuous degassing of molten metals The invention relates to a method and a device for the continuous degassing of molten metals and subsequent casting of the degassed metal, according to which the molten metal is guided into a vacuum for the purpose of degasification and after degasificati... | 09/24/2002 |
| 6375893 | Method and apparatus for evaporating components of multiple substance mixtures and multiple substance systems For the evaporation of given components from initial multiple-substance mixtures and systems at subatmospheric pressure, individual portions (P1, P2, P3, P4, P5) of the multiple-substance mixture and systems are placed in ring crucibles (17) stacked at se... | 04/23/2002 |
| 6289033 | Environmentally controlled induction heating system for heat treating metal billets An environmentally controlled heating system for heating metal alloy billets wherein a trolley system carries the billets through the chambers of the induction heating system in crucibles that are pushed or pulled by actuators. The billets enter the syste... | 09/11/2001 |
| 6049559 | Method of refining metal to high degree of purity and high-frequency vacuum induction melting apparatus A method of refining metal to be processed to a high degree of purity by heat-melting the metal in a melting furnace in the form of a metal crucible placed in a vacuum vessel. The method includes evacuating prior to melting, preheating the inside of the e... | 04/11/2000 |
| 5970083 | Device for injecting non-oxidizing gas into a furnace Device for injecting non-oxidizing gas into a furnace with a graphite concentrator (12) as the heating element used to heat a primary preform in the enclosure of the furnace (14) and moving relative to the furnace in its axial direction, and comprising at... | 10/19/1999 |
| 5923699 | Induction furnance heating module and gas zone A heating module for use in steel processing is provided. The module includes one or more gas heating zones and one or more induction heating coils intermixed among the gas heating zones. The modules are used to heat steel slabs to a consistent temperatur... | 07/13/1999 |
| 5268925 | Method and apparatus for the semi-continuous melting and discharging of ceramic material in an induction melting furnace with singering crust crucible A method is disclosed for the semi-continuous melting of ceramic material by means of inductive melting in high-frequency and medium-frequency induction melting furnaces whose melting coil surrounds a sintering crust crucible and contains a run-out channe... | 12/07/1993 |
| 5121406 | Induction melting furnace The invention relates to an induction melting furnace 1 for metals which are difficult to melt including an induction coil 2 surrounding the crucible 3 and a mold receptacle 4 surrounded by an annular chamber 5 to hold the cooling agent. The crucible 3 is... | 06/09/1992 |
| 4773079 | Process for melting down and degassing lumpy material Process for melting down and degassing lumpy material by means of inductive heating and under subatmospheric pressure in a melting crucible. For the purpose of shortening the duration of the process, scavenging gas and/or reaction gas is introduced into t... | 09/20/1988 |
| 4332553 | Vacuum firing porcelain furnace A furnace having an easily disassembled vacuum chamber to facilitate muffle replacement. The muffle is located over pins on the vacuum chamber base and is held against the base by a leaf spring between the muffle and the vacuum chamber top. The cylindrica... | 06/01/1982 |
