Patents by Inventor Rathindra DasGupta

Rathindra DasGupta has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7331373
    Abstract: A method of making a cast product, includes heating an alloy to a temperature between about 1210 and 1470° F. so that the alloy is in a liquid state, injecting the alloy into a vertical die casting machine cavity, injecting the alloy into a mold having a gated configuration, wherein the injecting further comprises a shot velocity between 3-8 inches per second and a pressure between 5,000 and 14,000 psi, cooling the alloy in the mold, and forming the cast product, wherein the cast product is selected from a group consisting of suspension components, knuckles, control arms, transmission input housings, bed plates, swash plates, air conditioning compressor pistons, engine valve bodies, engine bed plates, transmission valve bodies, master cylinders, brake calipers, ABS braking components, shock mounts, engine bedplates, engine valve bodies and pump housings.
    Type: Grant
    Filed: March 3, 2006
    Date of Patent: February 19, 2008
    Assignees: Contech U.S., LLC, Contech Operating UK, Ltd.
    Inventors: Rathindra DasGupta, Robert Hollacher, Mark Musser, Yun Xia, Richard Brian Szymanowski
  • Patent number: 7323069
    Abstract: To cast a part, an injectable form of an aluminum-copper (206) alloy is generated and the aluminum-copper (206) alloy is injected into a mold. This mold corresponds to the part. In addition, the aluminum-copper (206) alloy is solidified to generate the part and the part is ejected from the mold.
    Type: Grant
    Filed: March 15, 2005
    Date of Patent: January 29, 2008
    Assignees: Contech U.S., LLC, Contech Operating UK, Ltd
    Inventors: Rathindra DasGupta, Zach Brown, Mark Musser
  • Publication number: 20070246132
    Abstract: An aluminum alloy product is provided that includes an ADC12-T4 aluminum alloy. The ADC12-T4 aluminum alloy is cast into the product utilizing a high pressure, slow velocity casting technique. Further, an alloy is provided that in some embodiments produces cast parts with high strength, wear resistance, hardness and/or ductility, with little or no soldering.
    Type: Application
    Filed: March 26, 2007
    Publication date: October 25, 2007
    Inventors: Rathindra DasGupta, Joe Bigelow, Zach Brown
  • Patent number: 7165598
    Abstract: In a method for making a cast product by squeeze casting using an AZ91D alloy, the AZ91D alloy is heated to a liquid state, a shot sleeve is filled with the liquid AZ91D alloy, and a seal is formed between the shot sleeve and a die. In addition, the liquid alloy is injected into the die with an injection unit at a pressure of greater than about 69 Mega Pascal (Mpa) and a gate velocity of less than about 500 millimeters per second (mm/sec) and the AZ91D alloy is solidified in the die to generate the cast product.
    Type: Grant
    Filed: September 28, 2004
    Date of Patent: January 23, 2007
    Assignee: SPX Corporation
    Inventor: Rathindra DasGupta
  • Publication number: 20060213633
    Abstract: A method of making a cast product, includes heating an alloy to a temperature between about 1210 and 1470° F. so that the alloy is in a liquid state, injecting the alloy into a vertical die casting machine cavity, injecting the alloy into a mold having a gated configuration, wherein the injecting further comprises a shot velocity between 3-8 inches per second and a pressure between 5,000 and 14,000 psi, cooling the alloy in the mold, and forming the cast product, wherein the cast product is selected from a group consisting of suspension components, knuckles, control arms, transmission input housings, bed plates, swash plates, air conditioning compressor pistons, engine valve bodies, engine bed plates, transmission valve bodies, master cylinders, brake calipers, ABS braking components, shock mounts, engine bedplates, engine valve bodies and pump housings.
    Type: Application
    Filed: March 3, 2006
    Publication date: September 28, 2006
    Inventors: Rathindra DasGupta, Robert Hollacher, Mark Musser, Yun Xia, Richard Szymanowski
  • Publication number: 20050199364
    Abstract: To cast a part, an injectable form of an aluminum-copper (206) alloy is generated and the aluminum-copper (206) alloy is injected into a mold. This mold corresponds to the part. In addition, the aluminum-copper (206) alloy is solidified to generate the part and the part is ejected from the mold.
    Type: Application
    Filed: March 15, 2005
    Publication date: September 15, 2005
    Inventors: Rathindra DasGupta, Zach Brown, Mark Musser
  • Publication number: 20050199363
    Abstract: In a method for making a cast product by squeeze casting using an AZ91D alloy, the AZ91D alloy is heated to a liquid state, a shot sleeve is filled with the liquid AZ91D alloy, and a seal is formed between the shot sleeve and a die. In addition, the liquid alloy is injected into the die with an injection unit at a pressure of greater than about 69 Mega Pascal (Mpa) and a gate velocity of less than about 500 millimeters per second (mm/sec) and the AZ91D alloy is solidified in the die to generate the cast product.
    Type: Application
    Filed: September 28, 2004
    Publication date: September 15, 2005
    Inventor: Rathindra DasGupta
  • Publication number: 20050161128
    Abstract: All aluminum alloy is disclosed that includes 6.5 to 8.5 percent silicon, 0.6 to 1.0 percent iron, 0.3 to 0.5 percent manganese, 0.35 to 0.65 percent magnesium, 0.01 to 1.0 percent zinc, 0.11 to 0.2 percent titanium, 2.0 to 2.5 percent copper, and aluminum as the remainder with further one or more other elements that are 0.001 to 0.15 percent of the weight of the aluminum alloy. An aluminum alloy of the above composition is high in strength and suitable for use with SSM methods of casting, such as Rheocasting and Thixocasting.
    Type: Application
    Filed: March 22, 2005
    Publication date: July 28, 2005
    Inventor: Rathindra DasGupta
  • Patent number: 6908590
    Abstract: All aluminum alloy is disclosed that includes 6.5 to 8.5 percent silicon, 0.6 to 1.0 percent iron, 0.0 to 0.5 percent manganese, 0.35 to 0.65 percent magnesium, 0.0 to 1.0 percent zinc, 0.0 to 0.2 percent titanium, 2.0 to 2.5 percent copper, and aluminum as the remainder with further one or more other elements that are 0.0 to 0.15 percent of the weight of the aluminum alloy. An aluminum alloy of the above composition is high in strength and suitable for use with SSM methods of casting, such as Rheocasting and Thixocasting.
    Type: Grant
    Filed: March 19, 2002
    Date of Patent: June 21, 2005
    Assignee: SPX Corporation
    Inventor: Rathindra DasGupta
  • Publication number: 20050109479
    Abstract: A method of semi-solid metal casting without the need for retrofitting of conventional casting equipment is provided. A method of direct-feed casting of semi-solid metals is also provided.
    Type: Application
    Filed: January 14, 2005
    Publication date: May 26, 2005
    Inventors: Rathindra DasGupta, Robert Hollacher, Mark Musser, Yun Xia, Richard Szymanowski
  • Publication number: 20050067131
    Abstract: A method and product for semi-solid metal casting without the need for retrofitting of conventional casting equipment is provided. A semi solid method is used with a vertical indexing casting machine in which an indexing time can be used as the time to allow the metal that is heated to one temperature to cool to a second temperature before casting. The resulting product from the semi-solid metal casting method with the vertical indexing casting machine is also provided.
    Type: Application
    Filed: September 29, 2003
    Publication date: March 31, 2005
    Inventors: Rathindra DasGupta, Robert Hollacher, Mark Musser, Yun Xia, Richard Szymanowski
  • Patent number: 6786983
    Abstract: An aluminum alloy product is provided that includes an ADC12 aluminum alloy, wherein the ADC12 aluminum alloy is cast into the product utilizing a high pressure, slow velocity casting technique.
    Type: Grant
    Filed: March 19, 2002
    Date of Patent: September 7, 2004
    Assignee: SPX Corporation
    Inventors: Richard Brian Szymanowski, Rathindra DasGupta
  • Publication number: 20040062678
    Abstract: All aluminum alloy is disclosed that includes 6.5 to 8.5 percent silicon, 0.6 to 1.0 percent iron, 0.0 to 0.5 percent manganese, 0.35 to 0.65 percent magnesium, 0.0 to 1.0 percent zinc, 0.0 to 0.2 percent titanium, 2.0 to 2.5 percent copper, and aluminum as the remainder with further one or more other elements that are 0.0 to 0.15 percent of the weight of the aluminum alloy. An aluminum alloy of the above composition is high in strength and suitable for use with SSM methods of casting, such as Rheocasting and Thixocasting.
    Type: Application
    Filed: October 28, 2003
    Publication date: April 1, 2004
    Applicant: SPX Corporation
    Inventor: Rathindra DasGupta
  • Publication number: 20040055724
    Abstract: A method for the refining of primary silicon in hypereutectic alloys by mixing a hypereutectic alloy and a solid/semi-solid hypoeutectic alloy is described. The method provides control of the morphology, size, and distribution of primary Si in a hypereutectic Al—Si casting by mixing a hypoeutectic Al—Si liquid with one that is hypereutectic to impart desirable mechanical properties.
    Type: Application
    Filed: November 14, 2002
    Publication date: March 25, 2004
    Applicant: SPX Corporation
    Inventors: Deepak Saha, Diran Apelian, Rathindra DasGupta
  • Publication number: 20030180178
    Abstract: An aluminum alloy product is provided that includes an ADC12 aluminum alloy, wherein the ADC12 aluminum alloy is cast into the product utilizing a high pressure, slow velocity casting technique.
    Type: Application
    Filed: March 19, 2002
    Publication date: September 25, 2003
    Inventors: Richard Brian Szymanowski, Rathindra DasGupta
  • Publication number: 20030178106
    Abstract: All aluminum alloy is disclosed that includes 6.5 to 8.5 percent silicon, 0.6 to 1.0 percent iron, 0.0 to 0.5 percent manganese, 0.35 to 0.65 percent magnesium, 0.0 to 1.0 percent zinc, 0.0 to 0.2 percent titanium, 2.0 to 2.5 percent copper, and aluminum as the remainder with further one or more other elements that are 0.0 to 0.15 percent of the weight of the aluminum alloy. An aluminum alloy of the above composition is high in strength and suitable for use with SSM methods of casting, such as Rheocasting and Thixocasting.
    Type: Application
    Filed: March 19, 2002
    Publication date: September 25, 2003
    Inventor: Rathindra DasGupta