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| Number | Title | Issue Date |
| 7237593 | Molding machine and a pattern carrier used therefor In a molding machine, foundry sand thrown into a molding space defined by a pattern plate and flask members is compressed in two steps. Namely, in the first step a lower subsidiary flask is stationary while in the second step the flask is movable. The pattern carrie... | 07/03/2007 |
| 7210515 | Squeeze station for automated molding machine An automated matchplate molding machine includes a cope flask, a pattern plate and a drag flask for creating formed sand molds. A lock is provided to lock the drag flask to the platen table of the molding machine during desired stages of an individual sand molding s... | 05/01/2007 |
| 7117924 | Squeeze station for automated molding machine An automated matchplate molding machine includes a cope flask, a pattern plate and a drag flask for creating formed sand molds. A lock is provided to lock the drag flask to the platen table of the molding machine during desired stages of an individual sand molding s... | 10/10/2006 |
| 7104310 | Mold making machine with separated safety work zones An automatic molding machine has different operational molding stations in which at least two different safety zones are provided for the different molding stations. Such an automated machine includes a mold flask assembly including a drag flask, a cope flask and a ... | 09/12/2006 |
| 6942008 | Apparatus for producing casting mould parts The present invention provides an apparatus for producing casting mould parts by compacting mould material between a first squeeze plate and a second squeeze plate forming movable end walls of a moulding chamber, which subsequent to the compacting can be opened by m... | 09/13/2005 |
| 6817403 | Matchplate molding machine for forming sand molds A method and automated matchplate molding machine for blowing sand horizontally into the horizontally spaced open ends of the cope and drag flasks with a perpendicular trajectory relative to a vertically aligned matchplate between the cope and drag flasks. Sand is p... | 11/16/2004 |
| 6793001 | Casting sand blowing device for molding machines A sand-blowing apparatus for a molding machine having a sand-storing tank for storing foundry sand disposed so as to be movable vertically and having an opening in an upper part of the sand-storing tank for supplying sand thereto, a nozzle in a bottom part of the sa... | 09/21/2004 |
| 6622772 | Method for forming sand molds and matchplate molding machine for accomplishing same A method and automated matchplate molding machine for blowing sand horizontally into the horizontally spaced open ends of the cope and drag flasks with a perpendicular trajectory relative to a vertically aligned matchplate between the cope and drag flasks... | 09/23/2003 |
| 6499531 | Machine for producing flaskless moulds A molding machine for producing flaskless molds is provided with at least a cope flask and a drag flask and a pattern plate therebetween. The pair of flasks is alternatively positioned in a horizontal position in which the produced molds are removed and t... | 12/31/2002 |
| 6481488 | Apparatus for producing casting mould parts and comprising auxiliary guiding means In an apparatus for producing casting mould parts by compacting sand or other like material between a vertical squeeze plate (1) and a vertical swingable plate (2) in a squeeze chamber (3), wherein the swingable plate (2) swings away after the compaction ... | 11/19/2002 |
| 6304794 | Method for designing a metal mold When a molten plastic is molded using a metal mold, sufficient cooling time has to elapse before the metal mold is opened, but this cooling time restricts the production per unit time. If a metal mold is opened without sufficient cooling, the plastic unde... | 10/16/2001 |
| 6145576 | Machine for compacting sand moulds by air impact or expansion waves The machine has a pressure drum (1) capable of supplying a current of blowing air through the diffuser (2) towards the moulding box (3), and its characteristics are focused on a specific valve system in which a tubular valve body (7), to which the diffuse... | 11/14/2000 |
| 5947185 | Method and apparatus for pre-compacting molding sand Molding sand filled in a space defined by a pattern plate and a flask is pre-compacted before the molding sand is completely pressed. A pre-compacting member is inserted into the molding sand toward the pattern plate, and then is stopped based on a predet... | 09/07/1999 |
| 5887639 | Method and apparatus for manufacturing gas-hardened molds A method and apparatus is provided for increasing the packing density and strength of sand for gas-hardening casting molds. The method is characterized by the steps of filling spaces defined by a pattern plate 1 and a mold frame with gas-hardening casting... | 03/30/1999 |
| 5857513 | Aerator for vertical flaskless molding machine The assembly includes plural independently operated rotating shafts that contact the sand fill. As the fill is introduced into a first end of the vertical chute, the speed and rotational direction of the shafts with accompanying tines are controlled to re... | 01/12/1999 |
| 5695000 | Apparatus for producing molds The molding apparatus includes a table movable between an area where molding sand is fed and a mold-producing area for carrying a pattern plate on which a flask is mounted, a cylinder for vertically moving the table, a closing cover having an opening at t... | 12/09/1997 |
| 5601777 | Process for compressing granular material in a molding box A process for compacting foundry molding material is proposed, the molding material being introduced into a molding device with a pattern plate with a pattern frame and a molding and filing frame mounted on it, by means of a compressed gas, the compressed... | 02/11/1997 |
| 5476136 | Device for compacting granular molding material The device comprises a pressure housing for storing a gaseous medium under pressure, a pattern plate for supporting a pattern, and a molding box of height H associated with the pattern plate and defining therewith a molding space for receiving the granula... | 12/19/1995 |
| 5301740 | Air impact sandbox moulding machine with a blowing head A moulding machine with a blowing head includes a hollow rammer within which is provided a valve which receives blast air from a drum and which by telescopic conduits plays inside guide-columns in a fixed framework. The rammer is fixed through a flange to... | 04/12/1994 |
| 5280821 | Molding apparatus including vents comprising elongated slotted bars The molding apparatus includes a pattern plate carrier for air-pressurized compaction processes. The carrier is equipped with air venting structure running along the inner contour of the mold box of the sand molding apparatus in the form of elongated slot... | 01/25/1994 |
| 5261479 | Molding machine with pattern venting An apparatus for producing sand mold employing compressed air comprises a sand molding apparatus for use in making sand molds by employing compressed air. The apparatus includes, in the preferred embodiment, a pattern plate carrier having a top surface fo... | 11/16/1993 |
| 5170834 | Mold making machine and method of making molds A cope flask is precisely centered relative to a cope pattern by a flask displacement mechanism affixed to a cope stool which lineraly shifts the flask relative to the pattern while taking up clearance between the locator pins of the cope flask and the lo... | 12/15/1992 |
| 5148852 | Compressed air blowing apparatus for use in green sand mold molding facility A compressed air blowing apparatus for supplying compressed air to molding sand placed in a flask is arranged in such a manner that its compressed air reservoir tank is constituted by a surface-plate frame and a cover, the frame having a compressed-air ou... | 09/22/1992 |
| 5024161 | Molding apparatus A forming apparatus for the manufacture of casting molds made from sand or another moldable mixture by means of a pressure shock wave from a gaseous medium is proposed. The forming apparatus comprises a structural frame constructed from columns, cross bea... | 06/18/1991 |
| 5020582 | Method and apparatus for compacting foundry molding material in a foundry mold To improve the accuracy of making a casting pattern from a casting model or mold (2, 2') in a molding material (M) retained in a foundry form, a single pressure pulse (P) is applied to the molding material which, however, has two phases of pressure gradie... | 06/04/1991 |
| 5007477 | Air impact sand-box moulding machine A motor is mounted on a support positioned under a sand-supplying hopper. The motor is provided with sand-stirring vanes and has a protective plate to protect the motor from sand discharges. An air discharge valve is provided annularly outside the hopper ... | 04/16/1991 |
| 4969503 | Air impact molding machines for making sand molds The machine includes a compressed air bell-shaped ejector, a sand supplying hopper positioned above a diffuser located over a molding box receiving sand from the hopper. The sand supplying hopper is arranged axially inside the compressed air bell-shaped e... | 11/13/1990 |
| 4930564 | Airvessel for molding by expansive waves An airvessel for molding articles comprises a tank, a highly elastic membrane formed as a valve element and fixed in the tank by flanges to a support plate to form an annular chamber which may be pressurized via an air supply conduit to deform the membran... | 06/05/1990 |
| 4878534 | Apparatus for the compacting of granular molding materials A process and apparatus for compacting granular molding materials in a mold cavity defined by a pattern plate, a mold box arranged thereon, a filling frame on the molding box and a pressure chamber comprises applying pressure to the exterior peripheral wa... | 11/07/1989 |
| 4860817 | Apparatus for the compacting of granular molding materials An apparatus for compacting granular materials comprises a rack having a pedestal for supporting the mold which contains the granular material to be compacted. A compacting mechanism for applying a compacting force to the granular material is mounted for ... | 08/29/1989 |
| 4846253 | Apparatus for compressing foundry moulding material by means of compressed gas An apparatus for the compression of foundry moulding material by compressed gas, which comprises a pressure tank for the compressed gas forming an inlet pressure zone, a moulding zone positioned beneath the same constituted by a moulding box with filling ... | 07/11/1989 |
| 4840218 | Automatic matchplate molding system Green sand molds for use in casting operations are made automatically by a matchplate molding system. Features of the system include (1) pneumatic apparatus for filling the cope and drag flasks with sand, (2) a pusher on the drag flask for shifting molds ... | 06/20/1989 |
| 4828013 | Molding equipment for the production of a casting mold A molding appartus for use in the production of a casting mold from a granular molding material wherein the space between the pattern and the mold frame is provided with a plurality of orifices such that the sum of the area of the orifices is at least 1% ... | 05/09/1989 |
| 4828007 | Process for selectively compressing granular material in a molding box Granular material is selectively compressed in a molding box by a series of pressure surges applied over the granular material.... | 05/09/1989 |
| 4738299 | Guide slipper for matchplate mold making machine A bearing slipper for supporting a component of a matchplate mold-making machine for back and forth sliding along an elongated rail. The slipper comprises a rigid mounting block having one face covered wholly or partially by pad means made of tough anti-f... | 04/19/1988 |
| 4724888 | Method and apparatus for the production of flaskless foundry molds A method and apparatus for producing flaskless foundry molds made up of copes and drags of wet casting foundry sand, which is blasted into a cavity to form the mold with the use of vacuum. The sand is pressed mechanically while aspirating air therefrom. T... | 02/16/1988 |
| 4657064 | Adjustable guide slippers for matchplate molding machine The cope flask and drag platen of a matchplate molding machine are supported for up and down movement on vertical guide rails by sliding bearings or slippers located adjacent to corners of the flask and the platen. Each slipper includes a mounting block a... | 04/14/1987 |
| 4620585 | Apparatus for the compaction of foundry mold material An apparatus for the compaction of foundry mold making material using gas under pressure, comprises a pressure vessel for the such gas, a mold flask, a filling frame, a pattern plate and a pattern thereon onto which the material is to be loosely heaped. T... | 11/04/1986 |
| 4619307 | Apparatus for compressing foundry moulding material by pressure gas In an apparatus for compressing foundry moulding material by pressure gas comprising a pressure vessel for the pressure gas forming an inlet pressure chamber, a moulding chamber positioned below it formed from moulding boxes with sand frames and a pattern... | 10/28/1986 |
| 4609033 | Apparatus for compacting foundry mold making materials In a process for compacting foundry mold making material, that is loosely heaped in a closed mold space over a pattern, the surface of the material is acted on by a compressed gas with a pressure of at the most 8 bar. This gas is caused to undergo expansi... | 09/02/1986 |
