Patents by Inventor Stefan Kell
Stefan Kell 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: 11897010Abstract: A heatable high pressure cleaning appliance is provided with an undercarriage and a housing lower part, arranged on the undercarriage, in which a motor and a pump driven by the motor for pressurizing water are arranged, and with a fuel-operated heat exchanger for heating the water and a fuel tank for storing liquid fuel for the heat exchanger. In order to further develop the heatable high pressure cleaning appliance in such a way that it has a high mechanical stability and is producible in a cost-effective manner, it is proposed that the fuel tank is configured as a one-piece plastic hollow body, which forms the housing lower part and is held on a rigid support frame, wherein the support frame forms a shock protector that at least partially surrounds the fuel tank in the circumferential direction.Type: GrantFiled: March 10, 2021Date of Patent: February 13, 2024Assignee: Alfred Kärcher SE & Co. KGInventors: Stefan Kelle, Ralph Seitter, Zheyi Jin, Denis Dammkoehler, Stefan Ehrhardt
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Publication number: 20210187562Abstract: A heatable high pressure cleaning appliance is provided with an undercarriage and a housing lower part, arranged on the undercarriage, in which a motor and a pump driven by the motor for pressurizing water are arranged, and with a fuel-operated heat exchanger for heating the water and a fuel tank for storing liquid fuel for the heat exchanger. In order to further develop the heatable high pressure cleaning appliance in such a way that it has a high mechanical stability and is producible in a cost-effective manner, it is proposed that the fuel tank is configured as a one-piece plastic hollow body, which forms the housing lower part and is held on a rigid support frame, wherein the support frame forms a shock protector that at least partially surrounds the fuel tank in the circumferential direction.Type: ApplicationFiled: March 10, 2021Publication date: June 24, 2021Inventors: Stefan Kelle, Ralph Seitter, Zheyi Jin, Denis Dammkoehler, Stefan Ehrhardt
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Patent number: 9414732Abstract: A heatable high-pressure cleaning device (10) is provided with a fuel-operated heat exchanger (19) and a fuel tank (34) which has a tank upper section (38) with a closable filling opening (34) and a tank lower section (36) forming the base (48) of the fuel tank (34). In order to develop the heatable high-pressure cleaning device (10) further in such a manner that it can be produced more inexpensively and have a longer service life, the tank upper section (38) can be connected to the tank lower section (36) in a materially joined manner via a join area (60) and the fuel tank (34) can be fillable with liquid fuel only up to beneath the join area (60) in a horizontal position of use of the high-pressure cleaning device (10).Type: GrantFiled: August 16, 2013Date of Patent: August 16, 2016Assignee: Alfred Kärcher GmbH & Co. KGInventors: Stefan Kelle, Ralph Seitter
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Patent number: 9016291Abstract: A system for storing and dispensing a liquid cleaning additive for a high-pressure cleaning appliance has a device for storing the cleaning additive and a device for dispensing the cleaning additive in a controlled manner.Type: GrantFiled: August 3, 2010Date of Patent: April 28, 2015Assignee: Alfred Kaercher GmbH & Co. KGInventors: Stefan Kelle, Michael Boehm, Ralph Seitter
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Publication number: 20130333771Abstract: A heatable high-pressure cleaning device (10) is provided with a fuel-operated heat exchanger (19) and a fuel tank (34) which has a tank upper section (38) with a closable filling opening (34) and a tank lower section (36) forming the base (48) of the fuel tank (34). In order to develop the heatable high-pressure cleaning device (10) further in such a manner that it can be produced more inexpensively and have a longer service life, the tank upper section (38) can be connected to the tank lower section (36) in a materially joined manner via a join area (60) and the fuel tank (34) can be fillable with liquid fuel only up to beneath the join area (60) in a horizontal position of use of the high-pressure cleaning device (10).Type: ApplicationFiled: August 16, 2013Publication date: December 19, 2013Applicant: Alfred Karcher GmbH & Co. KGInventors: Stefan Kelle, Ralph Seitter
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Patent number: 8297189Abstract: The invention relates to so-called fuze damping in projectiles, in particular, those provided with a built-in firing delay. Thus, a projectile (1) is provided having a rear part (1a) and a fuze (2), wherein at least one damping element (7) is inserted between a fuze base (5) and the projectile (1) and/or between a fuze shoulder (6) and a possible threaded ring (4), or similar attachment element. The damping element (7) is in the form of a disc, ring or pot, and is composed of a material with a lower acoustic impedance than the material of the projectile (1).Type: GrantFiled: November 16, 2009Date of Patent: October 30, 2012Assignee: Rheinmetall Waffe Munition GmbHInventors: Wolfgang Hoffmann, Wolfgang Scherge, Mathias Lengnick, Holger Brase, Stefan Kell, Torsten Niemeyer
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Patent number: 8261759Abstract: A cleaning apparatus, in particular a high-pressure cleaning apparatus, is provided, on which at least one fastening device for fastening the cleaning apparatus to a carrier is disposed. The at least one fastening device comprising at least one tensioning section on which a tensile force, which is directed at the carrier, acts when the cleaning apparatus is fastened to the carrier by means of a tensioning element. At least one retaining section is connected to the at least one tensioning section, for retaining the at least one fastening device on the cleaning apparatus. The at least one fastening device has at least one support section in order to be supported on the cleaning apparatus. The support section is connected to the at least one tensioning section by at least one connecting section, the at least one connecting section yielding if the tensile force exceeds a maximum permissible tensile force.Type: GrantFiled: May 27, 2010Date of Patent: September 11, 2012Assignee: Alfred Kaercher GmbH & Co. KGInventors: Stefan Kelle, Ralph Seitter
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Publication number: 20110023918Abstract: A system for storing and dispensing a liquid cleaning additive for a high-pressure cleaning appliance has a device for storing the cleaning additive and a device for dispensing the cleaning additive in a controlled manner.Type: ApplicationFiled: August 3, 2010Publication date: February 3, 2011Applicant: Alfred Kaercher GmbH & Co. KGInventors: Stefan Kelle, Michael Boehm, Ralph Seitter
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Publication number: 20100299853Abstract: The invention relates to a cleaning apparatus, in particular a high-pressure cleaning apparatus, on which at least one fastening device for fastening the cleaning apparatus to a carrier is disposed, with the at least one fastening device comprising at least one tensioning section on which a tensile force, which is directed at the carrier, acts when the cleaning apparatus is fastened to the carrier by means of a tensioning element, and also comprising at least one retaining section, which is connected to the at least one tensioning section, for retaining the at least one fastening device on the cleaning apparatus.Type: ApplicationFiled: May 27, 2010Publication date: December 2, 2010Applicant: Alfred Kaercher Gmbh & Co. KGInventors: Stefan Kelle, Ralph Seitter