Patents Assigned to AS Lungen GmbH
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Patent number: 7934536Abstract: The invention relates to a feeder for cast metal, comprising a feeder head (1) having a cavity (5) that is open towards the surroundings via at least one opening (8), and a tubular body (2) which is guided through the opening (8) and arranged in a mobile manner. According to the invention, the tubular body (2) comprises an abutment (9) in the section thereof facing the cavity (5), said abutment (9) being capable of taking its bearing on a surface adjacent to the opening (8) in the cavity (5).Type: GrantFiled: February 20, 2006Date of Patent: May 3, 2011Assignee: AS Lungen GmbHInventor: Udo Skerdi
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Patent number: 7770629Abstract: The invention relates to a moulding mixture for producing casting moulds for metalworking, a process for producing casting moulds, casting moulds obtained by the process and also their use. To produce the casting moulds, a refractory mould raw material and a binder based on water glass are used. A proportion of a particulate metal oxide selected from the group consisting of silicon dioxide, aluminium oxide, titanium oxide and zinc oxide is added to the binder. Particular preference is given to using synthetic amorphous silicon dioxide as metal oxide.Type: GrantFiled: September 2, 2005Date of Patent: August 10, 2010Assignee: AS Lungen GmbHInventors: Günter Weicker, Diether Koch, Jens Müller, Udo Skerdi, Henning Rehse, Anton Gienic, Reinhard Stötzel, Thomas Dünnwald
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Publication number: 20090032210Abstract: The invention relates to a molding composition for producing insulating or exothermic feeders and other filling funnels and feeding elements for casting molds, which comprises at least: at least 10% by weight of a porous refractory material which has a continuous open pore structure; a binder for curing the molding mixture; if appropriate, a refractory filler; a proportion of a reactive aluminum oxide having a specific surface area of at least about 0.5 m2/g and an average particle diameter (D50) of from about 0.5 to 8 ?m. The invention further relates to a process for producing a feeder and other filling funnel or feeding elements for casting molds; feeders, filling funnels or feeding elements for casting molds which are obtained by the process and also their use for producing metal castings. The feeders and further shaped bodies for the foundry industry obtained from the molding composition of the invention have a particularly high gas permeability and a low density.Type: ApplicationFiled: March 14, 2006Publication date: February 5, 2009Applicant: AS LUNGEN GMBHInventors: Udo Skerdi, Josef Kroth, Henning Rehse
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Publication number: 20080223543Abstract: The invention relates to a feeder for cast metal, comprising a feeder head (1) having a cavity (5) that is open towards the surroundings via at least one opening (8), and a tubular body (2) which is guided through the opening (8) and arranged in a mobile manner. According to the invention, the tubular body (2) comprises an abutment (9) in the section thereof facing the cavity (5), said abutment (9) being capable of taking its bearing on a surface adjacent to the opening (8) in the cavity (5).Type: ApplicationFiled: February 20, 2006Publication date: September 18, 2008Applicant: AS LUNGEN GMBH & CO. KGInventor: Udo Skerdi
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Patent number: 7320355Abstract: This present invention concerns a feeder system for a cast piece with a feeder and/or feeder head and a tubular body, characterized in that the tubular body connects the feeder and/or feeder head directly or indirectly with the cast piece and/or the mold cavity and wherein the tubular body is made of cardboard or steel having a high carbon content.Type: GrantFiled: June 6, 2005Date of Patent: January 22, 2008Assignee: AS Lungen GmbH & Co. KGInventors: Udo Skerdi, Georg Scheerer
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Publication number: 20060000574Abstract: This present invention concerns a feeder system for a cast piece with a feeder and/or feeder head and a tubular body, characterized in that the tubular body connects the feeder and/or feeder head directly or indirectly with the cast piece and/or the mold cavity and wherein the tubular body is made of cardboard or steel having a high carbon content.Type: ApplicationFiled: June 6, 2005Publication date: January 5, 2006Applicant: AS LUNGEN GmbH & Co. KGInventors: Udo Skerdi, Georg Scheerer
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Patent number: 6972059Abstract: An exothermal feeder mass is described, containing aluminum and magnesium, at least one oxidizing agent, a SiO2-containing filler, and an alkali silicate as the binder; it is characterized in that it contains roughly 2.5 to 20% by weight of a reactive aluminum oxide with a specific surface of at least roughly 0.5 m2/g and an average particle diameter (d50) from roughly 0.5 to 8 microns and is essentially free of fluoride-containing fluxes.Type: GrantFiled: May 20, 2000Date of Patent: December 6, 2005Assignee: AS Lungen GmbH & Co. KGInventor: Udo Skerdi
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Patent number: 6904952Abstract: This present invention concerns a feeder system for a cast piece with a feeder and/or feeder head and a tubular body, characterized in that the tubular body connects the feeder and/or feeder head directly or indirectly with the cast piece and/or the mold cavity.Type: GrantFiled: November 2, 2001Date of Patent: June 14, 2005Assignee: AS Lungen GmbH & Co. KGInventors: Udo Skerdi, Georg Scheerer