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).
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Patent number: 7331373Abstract: 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: GrantFiled: March 3, 2006Date of Patent: February 19, 2008Assignees: Contech U.S., LLC, Contech Operating UK, Ltd.Inventors: Rathindra DasGupta, Robert Hollacher, Mark Musser, Yun Xia, Richard Brian Szymanowski
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Patent number: 7323069Abstract: 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: GrantFiled: March 15, 2005Date of Patent: January 29, 2008Assignees: Contech U.S., LLC, Contech Operating UK, LtdInventors: Rathindra DasGupta, Zach Brown, Mark Musser
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Publication number: 20070246132Abstract: 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: ApplicationFiled: March 26, 2007Publication date: October 25, 2007Inventors: Rathindra DasGupta, Joe Bigelow, Zach Brown
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Patent number: 7165598Abstract: 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: GrantFiled: September 28, 2004Date of Patent: January 23, 2007Assignee: SPX CorporationInventor: Rathindra DasGupta
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Publication number: 20060213633Abstract: 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: ApplicationFiled: March 3, 2006Publication date: September 28, 2006Inventors: Rathindra DasGupta, Robert Hollacher, Mark Musser, Yun Xia, Richard Szymanowski
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Publication number: 20050199364Abstract: 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: ApplicationFiled: March 15, 2005Publication date: September 15, 2005Inventors: Rathindra DasGupta, Zach Brown, Mark Musser
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Publication number: 20050199363Abstract: 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: ApplicationFiled: September 28, 2004Publication date: September 15, 2005Inventor: Rathindra DasGupta
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Publication number: 20050161128Abstract: 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: ApplicationFiled: March 22, 2005Publication date: July 28, 2005Inventor: Rathindra DasGupta
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Patent number: 6908590Abstract: 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: GrantFiled: March 19, 2002Date of Patent: June 21, 2005Assignee: SPX CorporationInventor: Rathindra DasGupta
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Publication number: 20050109479Abstract: 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: ApplicationFiled: January 14, 2005Publication date: May 26, 2005Inventors: Rathindra DasGupta, Robert Hollacher, Mark Musser, Yun Xia, Richard Szymanowski
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Publication number: 20050067131Abstract: 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: ApplicationFiled: September 29, 2003Publication date: March 31, 2005Inventors: Rathindra DasGupta, Robert Hollacher, Mark Musser, Yun Xia, Richard Szymanowski
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Patent number: 6786983Abstract: 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: GrantFiled: March 19, 2002Date of Patent: September 7, 2004Assignee: SPX CorporationInventors: Richard Brian Szymanowski, Rathindra DasGupta
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Publication number: 20040062678Abstract: 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: ApplicationFiled: October 28, 2003Publication date: April 1, 2004Applicant: SPX CorporationInventor: Rathindra DasGupta
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Publication number: 20040055724Abstract: 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: ApplicationFiled: November 14, 2002Publication date: March 25, 2004Applicant: SPX CorporationInventors: Deepak Saha, Diran Apelian, Rathindra DasGupta
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Publication number: 20030180178Abstract: 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: ApplicationFiled: March 19, 2002Publication date: September 25, 2003Inventors: Richard Brian Szymanowski, Rathindra DasGupta
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Publication number: 20030178106Abstract: 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: ApplicationFiled: March 19, 2002Publication date: September 25, 2003Inventor: Rathindra DasGupta