Patents by Inventor Andreas Bongard
Andreas Bongard 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: 10287649Abstract: A cold-rolled flat steel product may have a yield strength Rp0.2 of not more than 320 MPa, a fracture elongation A80 of at least 20% and a microstructure having by percent area 62%-82% ferrite, 10%-30% martensite, 1.5%-8% residual austenite, and a sum total of not more than 10% other microstructure constituents. The flat steel product may comprise a steel alloy containing in percent by weight 0.06%-0.1% C; 0.15%-0.4% Si; 1.5%-2% Mn; 0.2%-0.5% Cr; not more than 0.1% Al; wherein the sum total of C, Si, Mn, and Cr is at least 2.3% and not more than 2.8%; wherein the sum total of Si and Al is not more than 0.4%; not more than 0.03% P; not more than 0.006% S; not more than 0.008% N; unavoidable impurities including not more than 0.0006% B, not more than 0.02% V, and not more than 0.01% each of Nb and Ti, and not more than 0.1% each of Mo, Ni, and Cu; as well as iron. For production of such a flat steel product, a cold-rolled flat steel product may first be produced and then brought to 760-860° C.Type: GrantFiled: March 18, 2015Date of Patent: May 14, 2019Assignees: THYSSENKRUPP STEEL EUROPE AG, THYSSENKRUPP AGInventors: Andreas Bongards, Sigrun Voβ, Roland Sebald
-
Publication number: 20170218471Abstract: A cold-rolled flat steel product may have a yield strength Rp0.2 of not more than 320 MPa, a fracture elongation A80 of at least 20% and a microstructure having by percent area 62%-82% ferrite, 10%-30% martensite, 1.5%-8% residual austenite, and a sum total of not more than 10% other microstructure constituents. The flat steel product may comprise a steel alloy containing in percent by weight 0.06%-0.1% C; 0.15%-0.4% Si; 1.5%-2% Mn; 0.2%-0.5% Cr; not more than 0.1% Al; wherein the sum total of C, Si, Mn, and Cr is at least 2.3% and not more than 2.8%; wherein the sum total of Si and Al is not more than 0.4%; not more than 0.03% P; not more than 0.006% S; not more than 0.008% N; unavoidable impurities including not more than 0.0006% B, not more than 0.02% V, and not more than 0.01% each of Nb and Ti, and not more than 0.1% each of Mo, Ni, and Cu; as well as iron. For production of such a flat steel product, a cold-rolled flat steel product may first be produced and then brought to 760-860° C.Type: ApplicationFiled: March 18, 2015Publication date: August 3, 2017Applicants: ThyssenKrupp Steel Europe AG, ThyssenKrupp AGInventors: Andreas Bongards, Sigrun Voß, Roland Sebald
-
Publication number: 20150152533Abstract: The invention relates to a steel and to a flat steel product produced therefrom that have optimized mechanical properties and at the same time can be produced at low cost, without having to rely for this on expensive alloying elements that are subject to great fluctuations with regard to their procurement costs. The steel and the flat steel product have for this purpose the following composition according to the invention (in % by weight): C: 0.12-0.18%; Si: 0.05-0.2%; Mn: 1.9-2.2%; Al: 0.2-0.5%; Cr: 0.05-0.2%; Nb: 0.01-0.06%; the remainder Fe and impurities that are unavoidable for production-related reasons, which include contents of phosphorus, sulfur, nitrogen, molybdenum, boron, titanium, nickel and copper as long as the following respectively apply for their contents: P: ?0.02%, S: ?0.003%, N: ?0.008%, Mo: ?0.1%, B: ?0.0007%, Ti: ?0.01%, Ni: ?0.1%, Cu: ?0.1%. Similarly, the invention relates to a method for producing a flat steel product that consists of a steel according to the invention.Type: ApplicationFiled: June 5, 2013Publication date: June 4, 2015Inventors: Andreas Bongards, Sigrun Ebest, Sebastian Feldhaus, Udo Paul, Roland Sebald
-
Patent number: 8454465Abstract: The invention is related to a toothed chain with alternating inner and outer chain links each joined by means of a chain joint, wherein the inner chain links comprise at least one inner plate and at least two joint bushes running perpendicularly through the same, the outer chain links comprise at least two outer plates and at least two joint pins running perpendicularly through the same, and to form a chain joint, one joint pin of the outer chain link each extends through a joint bush of the inner chain link, and at least one inner plate of the inner chain link and/or at least one outer plate of the outer chain link is embodied as a toothed plate with each two teeth defined by an outer flank and an inner flank each.Type: GrantFiled: October 31, 2006Date of Patent: June 4, 2013Assignee: Iwis Motorsysteme GmbH & Co. KGInventors: Andreas Bongard, Volker Hirschmann, Lutz Welke
-
Patent number: 8052557Abstract: The present invention relates to a hydraulic auto-tensioner, in particular for a chain drive of an internal combustion engine, comprising a housing, a tensioning plunger guided in a plunger bore of said housing, a free piston guided in said plunger bore, and a plunger rod formed on said tensioning plunger and extending through the free piston. The tensioning plunger, the housing and the free piston delimit a hydraulic reservoir which is sealed with respect to the housing and the plunger rod by means of a sealing unit that is arranged on the free piston. The sealing unit is implemented as a double seal ring with an outer sealing surface which is in sliding contact with the plunger bore of the housing, and an inner sealing surface which is in sliding contact with the plunger rod of the tensioning plunger. In addition, the present invention relates to the use of such a double seal ring in a hydraulic auto-tensioner.Type: GrantFiled: March 23, 2009Date of Patent: November 8, 2011Assignee: iwis motorsystems GmbH & Co. KGInventors: Andreas Bongard, Oliver Daub
-
Patent number: 7758461Abstract: The present invention relates to a tooth plate for an inverted tooth chain with two hinge openings spaced apart in the longitudinal direction and a tooth plate contour with two teeth arranged on one side in the longitudinal direction, the teeth each being limited by an outer flank and an inner flank. Here, at least one section of the tooth plate contour is shaved, where the ends of the shaved section comprise an overcut. This overcut is arranged in a low-stress area of the tooth plate contour. The invention further relates to a corresponding method for the manufacture of such a tooth plate with the pre-punching and shaving of a section of the tooth plate contour, wherein the overcut at least one end is arranged in a low-stress area of the tooth plate contour. In the subsequent normal punching of the non-shaved areas, the normally punched area of the tooth plate contour and the at least one shaved section meet in the area of the overcut at an angle to each other.Type: GrantFiled: February 11, 2008Date of Patent: July 20, 2010Assignee: iwis motorsysteme GmbH & Co. KGInventors: Erwin Feld, Andreas Bongard
-
Publication number: 20100004083Abstract: The invention is related to a toothed chain with alternating inner and outer chain links each joined by means of a chain joint, wherein the inner chain links comprise at least one inner plate and at least two joint bushes running perpendicularly through the same, the outer chain links comprise at least two outer plates and at least two joint pins running perpendicularly through the same, and to form a chain joint, one joint pin of the outer chain link each extends through a joint bush of the inner chain link, and at least one inner plate of the inner chain link and/or at least one outer plate of the outer chain link is embodied as a toothed plate with each two teeth defined by an outer flank and an inner flank each.Type: ApplicationFiled: October 31, 2006Publication date: January 7, 2010Applicant: IWIS MOTORSYSTEME GmbH & Co. KGInventors: Andreas Bongard, Volker Hirschmann, Lutz Welke
-
Publication number: 20090247336Abstract: The present invention relates to a hydraulic auto-tensioner, in particular for a chain drive of an internal combustion engine, comprising a housing, a tensioning plunger guided in a plunger bore of said housing, a free piston guided in said plunger bore, and a plunger rod formed on said tensioning plunger and extending through the free piston. The tensioning plunger, the housing and the free piston delimit a hydraulic reservoir which is sealed with respect to the housing and the plunger rod by means of a sealing unit that is arranged on the free piston. The sealing unit is implemented as a double seal ring with an outer sealing surface which is in sliding contact with the plunger bore of the housing, and an inner sealing surface which is in sliding contact with the plunger rod of the tensioning plunger. In addition, the present invention relates to the use of such a double seal ring in a hydraulic auto-tensioner.Type: ApplicationFiled: March 23, 2009Publication date: October 1, 2009Applicant: iwis motorsysteme GmbH & Co. KGInventors: Andreas Bongard, Oliver Daub
-
Publication number: 20080194367Abstract: The present invention relates to a tooth plate for an inverted tooth chain with two hinge openings spaced apart in the longitudinal direction and a tooth plate contour with two teeth arranged on one side in the longitudinal direction, the teeth each being limited by an outer flank and an inner flank. Here, at least one section of the tooth plate contour is shaved, where the ends of the shaved section comprise an overcut. This overcut is arranged in a low-stress area of the tooth plate contour. The invention further relates to a corresponding method for the manufacture of such a tooth plate with the pre-punching and shaving of a section of the tooth plate contour, wherein the overcut at least one end is arranged in a low-stress area of the tooth plate contour. In the subsequent normal punching of the non-shaved areas, the normally punched area of the tooth plate contour and the at least one shaved section meet in the area of the overcut at an angle to each other.Type: ApplicationFiled: February 11, 2008Publication date: August 14, 2008Applicant: iwis motorsysteme GmbH & Co., KGInventors: Erwin Feld, Andreas Bongard
-
Publication number: 20080032840Abstract: A double-meshing type tooth chain, where each of the chain hinges is formed by a sleeve and by a pin extending through said sleeve, and the link plates of the inner chain links are arranged on the sleeves and the link plates of the outer chain links are arranged on the pins, and wherein the outer-chain-link link plate arranged on the pin and the inner-chain-link link plate, which is arranged on the sleeve and located adjacent to said link plate of the outer chain link, are oriented such that their teeth project in the same direction.Type: ApplicationFiled: June 28, 2007Publication date: February 7, 2008Applicant: iwis motorsysteme GmbH & Co., KGInventors: Volker Hirschmann, Michael Frank, Andreas Bongard