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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 7090801 | Monitoring device for melting furnaces Cracking of a crucible can cause heavy damage to the system in melting furnaces. A reliable monitoring of threatening breaking out of the melt is therefore needed. For this purpose a monitoring device for melting furnaces is provided to monitor the breaking out of m... | 08/15/2006 |
| 6841210 | Multilayer structured quartz glass crucible and method for producing the same Disclosed is a multilayer structured quartz glass crucible, for pulling up silicon single crystal, whose structure has at least three layers comprising: a translucent outer layer made of naturally occurring quartz glass and having a large number of pores, a transluc... | 01/11/2005 |
| 5932294 | MBE deposition method employing effusion cell having a unibody crucible A unibody, monolithic, one-piece negative draft crucible for a MBE effusion cell. The crucible maximizes capacity, uniformity and long term flux stability, and minimizes oval defects, depletion effects, and short term shutter-related flux transients. The ... | 08/03/1999 |
| 5827371 | Unibody crucible and effusion source employing such a crucible A unibody, monolithic, one-piece negative draft crucible for an MBE effusion source. The crucible maximizes capacity, uniformity and long term flux stability, and minimizes oval defects, depletion effects, and short term shutter-related flux transients. T... | 10/27/1998 |
| 5820681 | Unibody crucible and effusion cell employing such a crucible A unibody, monolithic, one-piece negative draft crucible for a MBE effusion cell. The crucible maximizes capacity, uniformity and long term flux stability, and minimizes oval defects, depletion effects, and short term shutter-related flux transients. The ... | 10/13/1998 |
| 5267259 | Induction crucible furnace with sonically uncoupled accessible furnace platform An induction crucible furnace with a tiltable furnace body includes a crucible that is usually covered by an accessible furnace platform. The furnace platform is sonically uncoupled from the furnace body in an untilted normal position, in order to reduce ... | 11/30/1993 |
| 5222096 | Induction furnace for melting and casting purposes with an enclosed crucible pot An induction furnace (1) for melting and casting purposes has a closed crucible pot (2) with a pot bottom (3) and a cover (4), a crucible (6) housed in the crucible pot and surrounded by an induction coil (7), and an ascending tube (9) reaching into the c... | 06/22/1993 |
| 5167216 | Vapor jacketed cooking vessel with burner A cooking vessel includes a kettle partially surrounded by a vapour jacket. An evaporator for containing fluid is mounted to the kettle and includes a tubular portion and is in fluid communication with the jacket to act as a vapour source for the jacket a... | 12/01/1992 |
| 4875853 | Method and apparatus for charring material Oven for charring plant matter, downdraft intermittent operation type, without external energy source. The invention relates essentially to the arrangement of the hearth located at the bottom of the oven, which provides the mechanical stability of the who... | 10/24/1989 |
| 4871309 | Apparatus for preparing samples An apparatus for producing a sample is disclosed which has a tilting mechanism (12, 14, 22). The tilting mechanism has a crucible holder (70) releasably coupled thereto and a crucible (100), which is provided with a flange (102), is insertable into the cr... | 10/03/1989 |
| 4747774 | Conforming crucible/susceptor system for silicon crystal growth A crucible/susceptor system is described in which the walls of the crucible and the susceptor cavity are sloped outward in an angle sufficient for the force of gravity to exceed the inward pulling forces created by the high surface tension of molten silic... | 05/31/1988 |
| 4681535 | Preheating mechanism for source metal for melt A preheating mechanism for preheating a source metal for melt includes a combination of independent combustion and preheating devices. The mechanism also includes a high-temperature gas conduit for connecting the combustion device and the preheating devic... | 07/21/1987 |
| 4679205 | Tiltable metallurgical furnace vessel In a tiltable metallurgical furnace vessel having a completely closed lateral protrusion with a closable discharge opening on its underside, simplified furnace structure is achieved by configuring the protrusion as a removable, heatable fore-hearth that i... | 07/07/1987 |
| 4641319 | Method for quantitative discharge of molten material In a method of intermittently charging a molten principal raw material and any supplementary material as needed to provide a specified raw material formulation into a melting furnace and continuously discharging a molten material therefrom, the discharge ... | 02/03/1987 |
| 4497658 | Compact precious metal furnace and recovery method A highly compact and efficient tilting crucible furnace and smelting method is disclosed for use in the direct smelting of a precious metal containing material. A furnace body having a refractory lined cavity which has a top opening is pivotally mounted o... | 02/05/1985 |
| 4264741 | Tiltable fermentor A tiltable fermentor includes a hollow perforated drum rotating within a generally cylindrical jacketed pressure vessel. The drum is cantilever-mounted and supported at one driven end by a shaft for rotation which is indirectly motor driven by means of an... | 04/28/1981 |
| 4255126 | Furnace tilting device A method and apparatus for tilting a furnace supported by rolling rockers is disclosed. The apparatus includes at least one hydraulic cylinder connected to a spout side of the furnace, and at least one hydraulic cylinder connected to a back side of the fu... | 03/10/1981 |
| 4180381 | Means for tilting crucible furnaces A tilting device for tilting crucible furnaces is supported in a stand wherein a yoke mounts the crucible furnace to the stand and is pivotable about a shaft extending transverse to the opening of the crucible furnace. The shaft is supported in movable gu... | 12/25/1979 |
| 4169755 | Growth of crystalline rods of gallium arsenide in a crucible of specially treated fibrous silicon dioxide A method of manufacturing a rod of crystalline material in a crucible formed at least partly by a fabric of refractory fibrous material. Prior to its use the crucible is subjected to a preparatory treatment consisting mainly of wetting the inner face by means ... | 10/02/1979 |
| 4045202 | Fusion and casting machine This invention relates to a fusion and casting machine for the preparation of glass buttons for analysis. The machine contains an assembly of several heaters which moves with a precession motion imparting agitation to the content of the molten materials. ... | 08/30/1977 |
| 4033564 | Crucible for melting, heat retention and pouring of metals A crucible for melting, and particularly for heat retention and pouring of metals, in particular light metal- or zinc- alloys, with a heat source arranged inside of the melt. A heat source tube extends in a bridge-like manner between the crucible walls, w... | 07/05/1977 |
