Patents by Inventor Matthias Laqua
Matthias Laqua 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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Publication number: 20230243423Abstract: Piston blank for a piston, comprising a piston lower part, which comprises a first joining surface running around a central axis of the piston blank, and a piston upper part, which comprises a second joining surface running around the central axis and an inner surface running around the central axis and adjoining the second joining surface as viewed along the central axis, wherein the piston upper part can be placed with its second joining surface on the first joining surface, and wherein a tangential plane which is assigned to the second joining surface is inclined relative to the central axis such that the tangential plane intersects the inner surface.Type: ApplicationFiled: January 27, 2023Publication date: August 3, 2023Inventors: Matthias LAQUA, Klaus BACHER
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Patent number: 11492996Abstract: The invention relates to a piston for an internal combustion engine formed from a lower part and an upper part which are threadingly connected to one another to form a piston. In one example, an anti-rotation safeguard device is used to prevent unwanted rotation of the upper part relative to the lower part. In another example, a forged extension and a nut are used to obtain a prestress during operation of the piston. In another example, a cooling gallery including extension bores are used to increase the cooling capacity.Type: GrantFiled: February 27, 2020Date of Patent: November 8, 2022Assignee: KS Kolbenschmidt GmbHInventors: Matthias Laqua, Alexander Schäfer, Wolfgang Köhler, Dieter Krämer
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Patent number: 10871125Abstract: A piston for an internal combustion engine including an upper part and a lower part connected by at least one threaded connection. The lower part includes a cutout positioned in the inner region of the piston above a peak of the pin bore extending toward the outer periphery of the piston. The lower part further includes at least one web positioned above the pin bore extending toward the outer periphery of the piston.Type: GrantFiled: November 2, 2016Date of Patent: December 22, 2020Assignee: KS Kolbenschmidt GmbHInventor: Matthias Laqua
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Publication number: 20200191089Abstract: The invention relates to a piston for an internal combustion engine formed from a lower part and an upper part which are threadingly connected to one another to form a piston. In one example, an anti-rotation safeguard device is used to prevent unwanted rotation of the upper part relative to the lower part. In another example, a forged extension and a nut are used to obtain a prestress during operation of the piston. In another example, a cooling gallery including extension bores are used to increase the cooling capacity.Type: ApplicationFiled: February 27, 2020Publication date: June 18, 2020Inventors: Matthias Laqua, Alexander Schäfer, Wolfgang Köhler, Dieter Krämer
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Patent number: 10337450Abstract: The invention relates to a cooling-channel piston for an internal combustion engine, having an upper part and a lower part, wherein the upper part and the lower part are connected to one another by way of a cohesive joint in the form of a weld seam, and the upper part and the lower part form an annularly encircling cooling channel which is arranged approximately behind a ring section, wherein a gap geometry is provided between a lower edge of the ring section and an upper edge of the lower part, wherein the gap geometry has at least one sliding surface which is arranged on a lower edge of the ring section of the cooling-channel piston and/or on the corresponding upper edge of the lower part of the cooling-channel piston, and to several methods for the operation of a cooling-channel piston.Type: GrantFiled: July 2, 2015Date of Patent: July 2, 2019Assignee: KS Kolbenschmidt GmbHInventors: Matthias Laqua, Volker Lehnert
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Publication number: 20180355818Abstract: The invention relates to a piston for an internal combustion engine formed from a lower part and an upper part which are threadingly connected to one another to form a piston. In one example, an anti-rotation safeguard device is used to prevent unwanted rotation of the upper part relative to the lower part. In another example, a forged extension and a nut are used to obtain a prestress during operation of the piston. In another example, a cooling gallery including extension bores are used to increase the cooling capacity.Type: ApplicationFiled: October 7, 2016Publication date: December 13, 2018Applicant: KS Kolbenschmidt GmbHInventors: Matthias Laqua, Alexander Schäfer, Wolfgang Köhler, Dieter Krämer
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Publication number: 20180313293Abstract: A piston for an internal combustion engine including an upper part and a lower part connected by at least one threaded connection. The lower part includes a cutout positioned in the inner region of the piston above a peak of the pin bore extending toward the outer periphery of the piston. The lower part further includes at least one web positioned above the pin bore extending toward the outer periphery of the piston.Type: ApplicationFiled: November 2, 2016Publication date: November 1, 2018Inventor: Matthias Laqua
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Publication number: 20180230937Abstract: Disclosed is a monoblock or cooling channel piston and a method for producing a monoblock piston for use in an internal combustion engine. A piston blank includes a circumferential collar protruding radially in the region of the piston crown is first produced and the collar is then shaped. A contact region on a top region of the piston skirts and the collar is shaped such that the outer circumferential edge thereof points at a distance to the contact region and forms a defined gap. The gap is then sealed by a closure element in order to form a closed cooling channel.Type: ApplicationFiled: August 11, 2016Publication date: August 16, 2018Inventor: Matthias Laqua
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Patent number: 10047694Abstract: A piston for an internal combustion engine has a sliding shoe carried in a force accumulator. The sliding shoe has a channel to transfer cooling oil into a hollow space. The force accumulator is located is a channel formed by the piston, and the sliding shoe is guided partially inside the force accumulator.Type: GrantFiled: June 13, 2014Date of Patent: August 14, 2018Assignee: KS KOLBENSCHMIDT GMBHInventors: Matthias Laqua, Markus Pinz
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Publication number: 20170138297Abstract: The invention relates to a cooling-channel piston for an internal combustion engine, having an upper part and a lower part, wherein the upper part and the lower part are connected to one another by way of a cohesive joint in the form of a weld seam, and the upper part and the lower part form an annularly encircling cooling channel which is arranged approximately behind a ring section, wherein a gap geometry is provided between a lower edge of the ring section and an upper edge of the lower part, wherein the gap geometry has at least one sliding surface which is arranged on a lower edge of the ring section of the cooling-channel piston and/or on the corresponding upper edge of the lower part of the cooling-channel piston, and to several methods for the operation of a cooling-channel piston.Type: ApplicationFiled: July 2, 2015Publication date: May 18, 2017Inventors: Matthias Laqua, Volker Lehnert
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Publication number: 20160146151Abstract: A piston for an internal combustion engine has a sliding shoe carried in a force accumulator. The sliding shoe has a channel to transfer cooling oil into a hollow space. The force accumulator is located is a channel formed by the piston, and the sliding shoe is guided partially inside the force accumulator.Type: ApplicationFiled: June 13, 2014Publication date: May 26, 2016Inventors: Matthias Laqua, Markus Pinz
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Patent number: 8925511Abstract: A cooling channel piston has a radially circumferential cooling channel located behind a ring field. The cooling channel piston is forged from a steel material and the cooling channel is worked in by machining between an upper part below the ring field and a lower part above the piston bosses and the piston skirts. The cooling channel extends behind the ring field in the direction of an upper face of the upper part, it being provided that the cooling channel piston has above its piston bosses and piston skirts an outwardly oriented support region. A closing element, which closes the cooling channel after the production thereof, is fastened between the lower edge of the ring field and the support region.Type: GrantFiled: September 15, 2009Date of Patent: January 6, 2015Assignee: KS Kolbenschmidt GmbHInventors: Franz-Peter Allig, Wolfgang Köhler, Matthias Laqua
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Publication number: 20140238332Abstract: A method for producing a cooling-duct piston for an internal combustion engine, composed of a piston upper part and a piston lower part, wherein the piston upper part is detachably connected to a piston lower part and a cooling duct is formed in the region between the piston upper part and the piston lower part which is charged with coolant via at least one inlet opening during the operation of the cooling duct piston and out of which coolant flows again via at least one outlet opening. In a first step, the piston upper part is detached and separated from the piston lower part, and subsequently a ring, which has at least on discharge opening, is fastened to the inlet opening and finally the piston upper part and the piston lower part reconnected. The cooling duct can be charged with coolant via the inlet opening. A cooling duct piston for an internal combustion engine is also disclosed.Type: ApplicationFiled: May 3, 2012Publication date: August 28, 2014Applicant: KS KOLBENSCHMIDT GMBHInventors: Matthias Laqua, Volker Lehnert
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Publication number: 20110265744Abstract: A cooling channel piston has a radially circumferential cooling channel located behind a ring field. The cooling channel piston is forged from a steel material and the cooling channel is worked in by machining between an upper part below the ring field and a lower part above the piston bosses and the piston skirts. The cooling channel extends behind the ring field in the direction of an upper face of the upper part, it being provided that the cooling channel piston has above its piston bosses and piston skirts an outwardly oriented support region. A closing element, which closes the cooling channel after the production thereof, is fastened between the lower edge of the ring field and the support region.Type: ApplicationFiled: September 15, 2009Publication date: November 3, 2011Applicant: KS KOLBENSCHMIDT GMBHInventors: Franz-Peter Allig, Wolfgang Köhler, Matthias Laqua