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| Number | Title | Issue Date |
| 7500507 | Method and device for pouring molten metal in vacuum molding and casting A pouring method and a device in a vacuum sealed process to produce a thin-wall cast by using a mold framing for the a vacuum sealed process, and a as-cast product using the pouring method are provided. The pouring method comprises the steps of: sealingly covering t... | 03/10/2009 |
| 7350558 | Method of venting a spray metal mold The present invention relates to a novel method of venting a spray metal molding surface. More particularly the invention relates to a method of manufacturing a mold using a thermal spray process to produce a metal surface containing passages in the spray metal to v... | 04/01/2008 |
| 6074690 | Method for producing a support structure for inlays, crowns and bridges in dentistry The invention concerns a process for the production of a frame for inlays, crowns and bridges in dental techniques. By means of the process, a considerable reduction in work and time expenditure is achieved in comparison with known processes. In the case ... | 06/13/2000 |
| 5333666 | Method for manufacturing a resin pattern, and a method for vacuum sealed molding process using resin pattern same A method for manufacturing a resin pattern, which does not break films in a vacuum sealed molding process and does not have secular deterioration even after repeated usages wherein a covering film is tightly contacted to an original pattern by vacuum suct... | 08/02/1994 |
| 5329981 | Method of producing a metal mold A method of producing a metal mold is disclosed. A heat resistant sheet is forcedly brought into close contact with a product configuration surface of a matrix such as a wooden pattern, a resin model, or the like by making use of negative pressure. The ma... | 07/19/1994 |
| 5219014 | Device and method for fabricating foundry molds from granular material The invention concerns a device and method for continuous fabricating of foundry molds from granular material. The device consists of a frame (10) with lights (11) supporting through swivels (31) caissons (30, 40) with large partitions (42) provided with ... | 06/15/1993 |
| 4943398 | Method for manufacturing a fused cast refractory A method for manufacturing a fused cast refractory article including the steps of pouring a molten refractory material into a cavity of a mold including a casting sand held by a negative pressure applied through the sand and against a thermoplastic film w... | 07/24/1990 |
| 4940071 | Method and device for fabricating moulds from granular material A method and device for making moulds shaped on two faces by means of model plates (10,11). After depression of the plates, the envelope (17) sealed at (40) containing the granular material (30) is, in its turn, subjected to depression through the tubes (... | 07/10/1990 |
| 4694879 | Process for producing castings A process for production of castings is provided employing patterns combining gasifiable pattern parts, for the creation of nonconforming contours, with reusable pattern parts. After molding, only the reusable pattern parts are removed from the mold, whil... | 09/22/1987 |
| 4602667 | Method for making investment casting molds Binder, filler, and refractory compositions and methods of using and making these compositions are disclosed. The binder composition comprises colloidal silica, a liquid material containing Si--OH groups, a solvent which is capable of solubilizing the liq... | 07/29/1986 |
| 4318437 | Metal casting system A metal casting system including novel process and apparatus wherein the shape of the casting is defined by a thin thermal degrading film supported by a particulate bed. A pattern having the shape of the desired casting is surrounded by the tight fitting ... | 03/09/1982 |
| 4287931 | Vacuum-forming procedure in metal casting The invention relates to metal casting employing a pattern in a sand mold. A thin film of translucent thermoplastic is coated with finely divided graphite and then superimposed on the pattern with the layer of graphite sandwiched in between. Infrared radi... | 09/08/1981 |
| 4217946 | Method of making molds A method of making molds, wherein facing sand prepared by using a binder which will retain its plasticity for a long time is spread into a thin sheet, which is then cut into suitable pieces according to the shape of a pattern, which pieces are then placed... | 08/19/1980 |
| 4167206 | Method for forming vacuum-sealed mould A method for forming a sprue and a communication-hole in a vacuum-sealed mould, and an apparatus for forming the same. This method inlcudes steps of: laying a shield film over a pattern and a sprue forming pattern or a communication hole forming pattern; ... | 09/11/1979 |
| 4157109 | Method for manufacturing a mold for metal casting In manufacturing of a mold for metal casting via the vacuum molding process, the cover for the original pattern is made of a synthetic film including, at least partly, ionomer resin component and, further preferably, the exposed surface of the cover set t... | 06/05/1979 |
| 4100958 | Moulding process for metals A Vacuum-sealed moulding process for casting of materials comprises formation of sand moulds in the absence of a pattern plate and with cores supported in the mould by suction. Handling apparatus for producing the mould on a vibratory vacuum table is disc... | 07/18/1978 |
| 4043376 | Casting process by vacuum molding In preparation of a mold for metal casting, a thermosetting resin layer, preferably of a thickness in a range from 2 to 100 micrometers, is formed between the refractory filler in the molding box and a covering laminate such as a thermoplastic synthetic r... | 08/23/1977 |
| 4036276 | Method of shaping a mould under a reduced pressure A method of producing a reduced-pressure-shaped mould in which at least in the region of a sprue runner of the mould to be formed and in regions where a shield material for the mould material is likely to be destroyed during introduction of the molten mat... | 07/19/1977 |
| 4028455 | Method for producing a reduced-pressure shaped mould A method for producing a reduced-pressure shaped mould comprises the steps of placing a pattern having gas-permeable orifices on a surface plate and adhering a coating film that is soluble in a solvent to the pattern by suction through the orifices. A fla... | 06/07/1977 |
| 4024623 | Manufacture of isostress contoured dies Method for making isostress contoured dies by providing a cavity containing multiple vertical supports. A flexible material is tensionally secured across the top of the cavity to contact the supports and pneumatically deformed to assume an isostress conto... | 05/24/1977 |
| 4009747 | Method of and device for forming vacuum sealed molds A method of and device for forming vacuum sealed molds, in which suction is applied to a charging material charged into a flask to remove the charging material adjacent the top of a sprue or a communicating passage thereby forming a cup-shaped pouring bas... | 03/01/1977 |
| 3970139 | Vacuum control valving apparatus for a vacuum sealed molding apparatus A vacuum control valving apparatus for a vacuum sealed molding apparatus. The control valving apparatus is located between a pair of mold members, one stacked upon the other, and a mating surface on a rail conveyor truck. The valving apparatus provides a ... | 07/20/1976 |
| 3964534 | Casting method with a vacuum bonded dry sand core A method for preparing sand cored parts is disclosed which is applicable to certain types of molding techniques where the mold cavity is at least slightly porous, such as shell molding, green sand molding, and most importantly, the cavityless method of mo... | 06/22/1976 |
| 3960198 | Reduced pressure mould production method An improved method of producing a mould under a reduced pressure is described herein. In the improved method, after a main pattern (1) having a protrusion and a recess is inserted with an auxiliary pattern (8) having the same shape as said recess and havi... | 06/01/1976 |
| 3955266 | Vacuum sealed molding process for producing molds having a deep concave portion or a convex portion A molding process for casting operations in which castings having a deep concave portion or a high convex portion such as pots and bathtubs are cast using vacuum sealed molds on which films are applied to be in tight contact with them, and a film forming ... | 05/11/1976 |
| 3952793 | Moulding flask for vacuum sealed moulding process Moulding flask adapted to be used in a process for forming a mould comprising steps of disposing, at the opening of the moulding flask, a pattern having a shield membrane of synthetic resin on the outer surface thereof, filling the space defined between t... | 04/27/1976 |
