Patents by Inventor Arnd Hofmann
Arnd Hofmann 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: 20160212802Abstract: The invention relates to a microwave oven (1) comprising an oven muffle (2), a high-frequency oscillator for generating microwaves propagating within the oven muffle (2), an opening (3) within a muffle wall (2.1) of the oven muffle (2) for passing a rotatable shaft (4) of a motor (5) through the muffle wall (2.1) and means (6) for suppressing microwave leakage through said opening (3), wherein the means (6) for suppressing microwave leakage are arranged at a distance to the muffle wall by means of a motor mounting element (7) bearing the motor (5) and wherein there is no direct physical contact between the muffle wall (2.1) and the suppression means (6).Type: ApplicationFiled: July 24, 2014Publication date: July 21, 2016Inventors: Omar HOUBLOSS, Arnd HOFMANN, Michael WITTMANN
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Publication number: 20160208539Abstract: The invention relates to an actuation system for automatic actuation of at least one element (2, 8, 11) covering an opening of a household appliance. The actuation system comprises at least one actuation element (3) constituted by at least one shape memory alloy element. The actuation system is adapted to actuate the element (2, 8, 11) when applying heat to the actuation element.Type: ApplicationFiled: July 30, 2014Publication date: July 21, 2016Inventors: Arnd HOFMANN, Fabienne REINHARD-HERRSCHER
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Patent number: 9226345Abstract: A wave choke system for an oven door of a microwave oven has an elongated channel for an outer portion of the oven door and an elongated cover sheet covering partially the width of an open longitudinal side of the channel. The cover sheet includes a plurality of slots extending perpendicular to the longitudinal axis of the cover sheet. Each slot includes an open end at a longitudinal edge of the cover sheet and a closed end on the opposite side of the open end, a broadening in a central portion of the slot, a first small portion between the open end and the broadening and a second small portion between the broadening and the closed end. The slots are reciprocally intersected, so that the contours of the slots and the intermediate pieces between the slots are formed complementarily to each other.Type: GrantFiled: June 16, 2010Date of Patent: December 29, 2015Assignee: ELECTROLUX HOME PRODUCTS CORPORATION N.V.Inventors: Abdel-Ilah Zbat, Arnd Hofmann
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Publication number: 20150334788Abstract: An oven door for a microwave oven or an appliance with microwave heating function. The door includes a door frame enclosing the door and glass panels inside and/or in front of the frame. The frame includes a wave choke arranged between a support element and a cover element. The cover element is fixed or fixable at the support element and forms an outer portion of an inner side of the oven door. The cover element is made of a high temperature resistant non-metallic material and covers an outer portion of an inner side of an inner glass panel. The inner glass panel is clamped between the cover element and the support element and/or the wave choke. A sealing element made of a high temperature resistant textile material is arranged between the cover element and the inner glass panel. A corresponding chassis is provided for the oven or the appliance.Type: ApplicationFiled: January 27, 2014Publication date: November 19, 2015Inventors: Arnd HOFMANN, Klaus SCHLOTTERER-FRATOIANNI
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Publication number: 20150253015Abstract: The invention in particular relates to a method of treating soiled inner walls of an oven cavity (3). The method comprises a step of mechanically nebulising a cleansing liquid (5) for generating a mist (11) of the cleansing liquid (5) within the oven cavity (3).Type: ApplicationFiled: August 28, 2012Publication date: September 10, 2015Applicant: Electrolux Home Products Corporation N.V.Inventors: Reiner Horstmann, Christoph Luckhardt, Arnd Hofmann
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Patent number: 9115902Abstract: Household appliance (10, 40), in particular an oven, comprising a casing (12, 42), which defines a cavity (14, 44) having an opening (16, 46), and a door (18, 48) for opening and closing said opening (16, 46), wherein the door (18, 48) comprises a front wall (20, 50) and a frame (22, 52), wherein the frame (22, 52) comprises at least one window portion (30, 60) made of a transparent material and being visible from outside the appliance (10, 40), and in that an optical deflecting device (32, 62) is provided for projecting an image of the interior of the cavity (14, 44) on the window portion (30, 60).Type: GrantFiled: December 3, 2009Date of Patent: August 25, 2015Assignee: ELECTROLUX HOME PRODUCTS CORPORATION N.V.Inventors: Norbert Danzer, Arnd Hofmann, Abdel-Ilah Zbat, Martin Gasch
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Publication number: 20140317501Abstract: On-screen help with contextual shortcut on an appliance The invention relates to an appliance (100) with a user interface (110) comprising a display (111) for showing indications about conditions in the appliance, and first (112, 114) and second (113) touch-sensitive input means. The second input means causes the interface to enter an assistance mode displaying which assistance items, which a processing means (121) extracts from a collection (122) of assistance information based on the content of the display when the assistance mode is invoked. In one embodiment, a data record ensures that the user returns to the same page after consulting the assistance mode. In another embodiment, the appliance is adapted to update the collection of assistance information on the basis of data received at an external communication interface. In another embodiment, the display reacts differently to short and long activations of a given touch-sensitive input means.Type: ApplicationFiled: October 13, 2011Publication date: October 23, 2014Applicant: ELECTROLUX HOME PRODUCTS CORPORATION N.V.Inventors: Jerome Brasseur, Petter Karlsson, Martin Knausenberger, Arnd Hofmann
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Publication number: 20140311473Abstract: The invention in particular is directed to an oven cavity (3) adapted to be used with a baking and/or steaming oven (1). The cavity (3) comprises several cavity walls (5, 6), wherein at least one load bearing wall section of at least one of the cavity walls (5, 6) is made in self-supporting configuration from at least one of a high temperature resistant polymer material and technical textile material.Type: ApplicationFiled: January 9, 2013Publication date: October 23, 2014Inventors: Arnd Hofmann, Fabienne Reinhard-Herrscher, Erhardt Koitzsch
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Patent number: 8502125Abstract: The present invention relates to an oven door with a wave chokes system for a microwave oven. The oven door includes at least one transparent door panel made of a dielectric material and a metallization enclosing at least partially the transparent door panel. The oven door includes further a plurality of lamellae arranged uniformly on one side of the metallization and at least one front shielding, which is arranged in the center portion on at least one side of the transparent door panel. The metallization and the lamellae are formed by a coating on the transparent door panel, wherein said coating is made of a conductive material and applied on the transparent door panel. Further, the present invention relates to a corresponding microwave oven. Additionally, the present invention relates to a method for manufacturing an oven door with a wave chokes system for a microwave oven.Type: GrantFiled: July 30, 2008Date of Patent: August 6, 2013Assignee: Electrolux Home Products Corporation N.V.Inventors: Norbert Danzer, Abdel-llah Zbat, Martin Gasch, Arnd Hofmann
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Patent number: 8455803Abstract: The present invention relates to a wave choke device for an oven door of a microwave oven. The wave choke device includes a front shielding comprising at least one conductive material and a wave trap forming a channel with one at least partially open side, which wave trap is arranged on at least one outer portion of the front shielding and comprises at least one conductive material. The wave choke device includes further a plurality of lamellae arranged uniformly in the at least partially open side of the wave trap, which lamellae comprises at least one conductive material. The wave choke device comprises one single piece made of a perforated material, wherein said one single piece includes at least the front shielding and the wave trap. The present invention relates further to a corresponding oven door and a corresponding microwave oven.Type: GrantFiled: July 30, 2008Date of Patent: June 4, 2013Assignee: Electrolux Home Products CorporationInventors: Norbert Danzer, Martin Gasch, Abdel-Ilah Zbat, Arnd Hofmann
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Publication number: 20130082971Abstract: The invention relates to an oven, especially to a domestic oven, which has a control panel comprising a user interface (1) for inputting data (D) into the control panel, wherein the user interface (1) comprises: at least one display element (2) for displaying data, wherein data (D) can be displayed on the display element (2) at a location (Z) on the display element (2) at a predetermined first axial position (x) and a predetermined second axial position (y), wherein the direction of the first (x) and of the second (y) axial positions are perpendicular to another, selecting means (3, 4) for selecting the location (Z) on the display element (2) by selecting or pretending a definite first (x) and second (y) position for a cursor (5), wherein at least one of the selecting means (3, 4) are established as a slider element extending in a longitudinal direction (L) and having a surface (6) sensitive for touching with a finger (7) of the user, wherein a control unit is arranged to position the cursor (5) in a positionType: ApplicationFiled: June 20, 2011Publication date: April 4, 2013Applicant: ELECTROLUX HOME PRODUCTS CORPORATION N.V.Inventors: Jerome Brasseur, Arnd Hofmann, Petter Karlsson, Martin Knausenberger, Stefan Lehmann
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Publication number: 20120199580Abstract: The present invention relates to a wave stirrer for a microwave oven. The wave stirrer comprises a holding device (10) rotatable around a rotation axis (18) and at least two stirrer blades (12; 26; 28; 34) arranged at the holding device (10). The holding device (10) is made of at least one dielectric material. The stirrer blades (12; 26; 28; 34) are made of at least one conductive material. The maximum axial extension (A) of the stirrer blade (12; 26; 28; 34) along the rotation axis (18) is equal as or bigger than the maximum radial extension (R) of the stirrer blade (12; 26; 28; 34) orthogonal to the rotation axis (18). Further, the present invention relates to a microwave oven with said wave stirrer.Type: ApplicationFiled: July 16, 2010Publication date: August 9, 2012Applicant: ELECTROLUX HOME PRODUCTS CORPORATION N.V.Inventors: Abdel-Ilah Zbat, Markus Breitschwerdt, Arnd Hofmann, Dagmar Moll
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Publication number: 20120091127Abstract: The present invention relates to a microwave sealing device of an opening for a rotating shaft (26) or axle. The sealing device (10; 30; 50) is provided for enclosing a section of the shaft (26) or axle. The sealing device (10; 30; 50) includes a front panel (12; 32; 52) and a basis part (14; 34; 54). The front panel (12; 32; 52) is formed as a plane disk and comprises a central hole (16; 36; 56) in its centre and a plurality of cuts (20; 40; 58, 60). The basis part (14; 34; 54) is formed as a hollow part with a peripheral wall and two opposing face sides. At least one of the two opposing face sides of the basis part (14; 34; 54) is open. The basis part (14; 34; 54) comprises a plurality of cuts (22; 42; 62) in the peripheral wall. The front panel (12; 32; 52) is attached at the open face side or at one of the two open face sides, respectively, of the basis part (14; 34; 54).Type: ApplicationFiled: April 29, 2010Publication date: April 19, 2012Applicant: ELECTROLUX HOME PRODUCTS CORPORATION N.V.Inventors: Arnd Hofmann, Norbert Danzer, Abdel-Ilah Zbat
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Publication number: 20120091128Abstract: The present invention relates to a microwave oven with at least one wave choke system. A front frame (12) encloses a front portion of a cavity wall (24) of an oven cavity (10) along a circumferential direction. An oven door (14) is provided to cover front sides of the oven cavity (10) and front sides of the cavity wall (24) completely and the front frame (12) at least partially in a closed state of said oven door (14). A first gap (16) is formed between the inner side of the oven door (14) on the one hand and front sides both of the front frame (12) and the cavity wall (24) on the other hand. A second gap (18) is formed between the front portions of the front frame (12) and the cavity wall (24). The cross-section of the second gap (18) extends perpendicularly to the cross-section of the first gap (16). A wave choke system is arranged within the second gap (18). The wave choke system comprises a plurality of choke members (26) and a counter part (28).Type: ApplicationFiled: May 10, 2010Publication date: April 19, 2012Applicant: ELECTROLUX HOME PRODUCTS CORPORATION N.V.Inventors: Arnd Hofmann, Abdel-Ilah Zbat
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Publication number: 20120085755Abstract: The present invention relates to a wave choke system for an oven door of a microwave oven. The wave choke system comprises an elongated channel (10) provided for an outer portion of the oven door and an elongated cover sheet (12) covering partially the width of an open longitudinal side of said channel (10). The cover sheet (12) includes a plurality of slots (14) extending perpendicular to the longitudinal axis of the cover sheet (12). The slot (14) includes an open end at a longitudinal edge of the cover sheet (12) and a closed end on the opposite side of said open end, a broadening (20) in a central portion of the slot (14), a first small portion (16) between the open end and the broadening (20) and a second small portion (18) between the broadening (20) and the closed end. The slots (14) are reciprocal intersected, so that the contours of the slots (14) and intermediate pieces (40) between the slots (14) are formed complementarily to each other.Type: ApplicationFiled: June 16, 2010Publication date: April 12, 2012Applicant: ELECTROLUX HOME PRODUCTS CORPORATION N.V.Inventors: Abdel-Ilah Zbat, Arnd Hofmann
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Publication number: 20110297673Abstract: The present invention relates to a wave choke system for a door of a microwave oven. The wave choke system comprises at least one wave trap (10) formed as an elongated channel and bordered by four channel walls (22, 24, 32, 34) made of one or more conductive materials and by at least one gap (28). The wave trap (10) is provided for extending at least partially along a door frame and/or along a cavity frame (12). The wave trap (10) comprises at least two adjoining wave choke recesses (14, 16) for a ?/4 transformation parallel to each other and parallel to the wave trap (10). Two neighbouring wave choke recesses (14, 16) are separated by an elongated wave barrier (18) made of one or more conductive materials. The height of the wave barrier (18) is lower than the height of the wave trap (10).Type: ApplicationFiled: March 26, 2010Publication date: December 8, 2011Applicant: ELECTROLUX HOME PRODUCTS CORPORATION N.V.Inventors: Abdel-Ilah Zbat, Arnd Hofmann
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Publication number: 20110240003Abstract: Household appliance (10, 40), in particular an oven, comprising a casing (12, 42), which defines a cavity (14, 44) having an opening (16, 46), and a door (18, 48) for opening and closing said opening (16, 46), wherein the door (18, 48) comprises a front wall (20, 50) and a frame (22, 52), wherein the frame (22, 52) comprises at least one window portion (30, 60) made of a transparent material and being visible from outside the appliance (10, 40), and in that an optical deflecting device (32, 62) is provided for projecting an image of the interior of the cavity (14, 44) on the window portion (30, 60).Type: ApplicationFiled: December 3, 2009Publication date: October 6, 2011Applicant: ELECTROLUX HOME PRODUCTS CORPORATION N.V.Inventors: Norbert Danzer, Arnd Hofmann, Abdel-Ilah Zbat, Martin Gasch
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Publication number: 20110089169Abstract: The present invention relates to a wave choke system for an oven door of a microwave oven. The wave choke system comprises a wave trap (10) on at least one circumferential side of the oven door. The wave trap (10) is provided as an open channel made of conductive material and extends along the circumferential side of the oven door or on a portion of said circumferential side. According to the present invention the wave trap (10) is subdivided into a plurality of open cells (24) on at least one circumferential side of the oven door by separating elements (22), so that the open cells (24) are arranged serially along the longitudinal axis of the wave trap (10), wherein said separating elements (22) are formed as a sheet made of a conductive material. Further, the present invention relates to a corresponding oven door and a corresponding microwave oven.Type: ApplicationFiled: July 30, 2008Publication date: April 21, 2011Inventors: Arnd Hofmann, Abdel-Ilah Zbat
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Publication number: 20100308034Abstract: The present invention relates to an oven door with a wave chokes system for a microwave oven. The oven door includes at least one transparent door panel made of a dielectric material and a metallization enclosing at least partially the transparent door panel. The oven door includes further a plurality of lamellae arranged uniformly on one side of the metallization and at least one front shielding, which is arranged in the centre portion on at least one side of the transparent door panel. The metallization and the lamellae are formed by a coating on the transparent door panel, wherein said coating is made of a conductive material and applied on the transparent door panel. Further, the present invention relates to a corresponding microwave oven. Additionally, the present invention relates to a method for manufacturing an oven door with a wave chokes system for a microwave oven.Type: ApplicationFiled: July 7, 2008Publication date: December 9, 2010Applicant: ELECTROLUX HOME PRODUCTS CORPORATION N.V.Inventors: Norbert Danzer, Abdel-Ilah Zbat, Martin Gasch, Arnd Hofmann
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Publication number: 20100301040Abstract: The present invention relates to a wave choke device for an oven door of a microwave oven. The wave choke device includes a front shielding comprising at least one conductive material and a wave trap forming a channel with one at least partially open side, which wave trap is arranged on at least one outer portion of the front shielding and comprises at least one conductive material. The wave choke device includes further a plurality of lamellae arranged uniformly in the at least partially open side of the wave trap, which lamellae comprises at least one conductive material. The wave choke device comprises one single piece made of a perforated material, wherein said one single piece includes at least the front shielding and the wave trap. The present invention relates further to a corresponding oven door and a corresponding microwave oven.Type: ApplicationFiled: July 30, 2008Publication date: December 2, 2010Applicant: ELECTROLUX HOME PRODUCTS CORPORATION N.V.Inventors: Norbert Danzer, Martin Gasch, Abdel-Ilah Zbat, Arnd Hofmann