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| Number | Title | Issue Date |
| 7188416 | Restoration process for porosity defects in high pressure die cast engine blocks A restoration process for restoring surface porosity defects in engine blocks cast using a high pressure die cast method. The areas of an engine block having surface porosity defects are identified and the areas not containing surface porosity defects are masked usi... | 03/13/2007 |
| 7100669 | Aluminum-silicon casting alloy having refined primary silicon due to pressure Provided herein is a method for refining primary silicon present in a hypereutectic aluminum silicon alloy. The method contemplates the controlled application of pressure to refine the primary silicon during the casting of articles. The application of pressure decre... | 09/05/2006 |
| 6957685 | Method of cleaning and of heat treating lost foam castings A method of cleaning and of heat treating lost foam castings utilizing a heated, fluidized sand bed is disclosed. The fluidized action of the sand, the movement of the casting through the sand and the heat of the bed, combine to remove residue coating resulting from... | 10/25/2005 |
| 6923935 | Hypoeutectic aluminum-silicon alloy having reduced microporosity A hypoeutectic aluminum silicon casting alloy having a refined primary silicon particle size and a modified iron morphology. The alloy includes 10 to 11.5% by weight silicon, 0.10 to 0.70% by weight magnesium and also contains 0.05 to 0.07% by weight strontium. On c... | 08/02/2005 |
| 6883580 | Apparatus and improved method for lost foam casting of metal articles using external pressure An apparatus and method to delay the application of pressure on a molten metal front to equalize a pressure gradient present at the molten metal front during pressurized lost foam casting processes, or other pressurized casting processes. A pressure equalization mem... | 04/26/2005 |
| 6763876 | Method and apparatus for casting of metal articles using external pressure A method for casting of metal articles using external pressure and having particular application to lost foam casting of metal articles. A polymeric foam pattern having a configuration corresponding to an article to be cast is placed in an outer flask and the patter... | 07/20/2004 |
| 6755360 | Fuel injector with an improved poppet which is increasingly comformable to a valve seat in response to use Poppets for fuel injectors are provided with an improved sealing surface by making the poppet from a softer material than is known in the prior art. Instead of providing a Rockwell C hardness value of 50 or greater, as is known to those skilled in the art of poppet ... | 06/29/2004 |
