Patents by Inventor Georg Hofmann
Georg 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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Patent number: 11371529Abstract: A fan wheel for a fan is equipped with at least two fan blades with a wavy design. A fan has at least one such fan wheel. A system has at least one fan with such a fan wheel.Type: GrantFiled: August 4, 2016Date of Patent: June 28, 2022Assignee: ZIEHL-ABEGG SEInventors: Frieder Loercher, Georg Hofmann, Sandra Hub
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Patent number: 11035233Abstract: A disclosed system includes an impeller for a ventilator. The impeller includes a hub or hub ring configured to rotate about an axis and a plurality of vanes attached to the hub or hub ring. Each vane of the impeller has a leading edge facing a pressure side of the ventilator along the axis, and a trailing edge facing a suction side of the ventilator along the axis. The leading edge of each vane has a corrugated shape characterized by a first wavelength and the trailing edge has a corrugated shape characterized by a second wavelength, with the first wavelength being longer than the second wavelength. The impeller may further include injection molded plastic, die-cast aluminum, stamped sheet metal, or laser cut sheet metal that is embossed. The impeller may further be assembled from separately manufactured pieces that are secured to one another using joining, welding, or by interlocking tabs.Type: GrantFiled: June 18, 2018Date of Patent: June 15, 2021Assignee: ZIEHL-ABEGG SEInventors: Tobias Gauss, Daniel Seifried, Thomas Bitz, Frieder Loercher, Georg Hofmann, Sven Loenne
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Patent number: 10816009Abstract: The invention relates to a fan wheel having blades (11) which are distributed over the circumference and are connected to one another in the circumferential direction via at least one ring. The fan wheel consists of at least three integrally formed segments (I to VII). Said segments comprise at least one respective ring portion (1) of at least one ring as well as either a blade (II) or at least a portion of the blades. The segments (I to VII) are joined together to form the fan wheel. The ring portions (1) lie against each other with edges (4, 5) which form the joining areas (15, 16) that are disposed transversely with respect to the circumferential direction of the fan wheel. At least one edge (4) of the ring portion (1) of each segment (I to VII) is provided with at least one projecting form-fitting part (18), and at least one edge (4, 5) of the ring portion (1) of each segment (I to VII) is provided with at least one recess (17) which is at least approximately complementary to the form-fitting part (18).Type: GrantFiled: September 24, 2015Date of Patent: October 27, 2020Assignee: Ziehl-Abegg SEInventors: Frieder Lörcher, Andreas Gross, Georg Hofmann, Lothar Ernemann
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Publication number: 20200173284Abstract: A disclosed system includes an impeller for a ventilator. The impeller includes a hub or hub ring configured to rotate about an axis and a plurality of vanes attached to the hub or hub ring. Each vane of the impeller has a leading edge facing a pressure side of the ventilator along the axis, and a trailing edge facing a suction side of the ventilator along the axis. The leading edge of each vane has a corrugated shape characterized by a first wavelength and the trailing edge has a corrugated shape characterized by a second wavelength, with the first wavelength being longer than the second wavelength. The impeller may further include injection molded plastic, die-cast aluminum, stamped sheet metal, or laser cut sheet metal that is embossed. The impeller may further be assembled from separately manufactured pieces that are secured to one another using joining, welding, or by interlocking tabs.Type: ApplicationFiled: June 18, 2018Publication date: June 4, 2020Inventors: Tobias GAUSS, Daniel SEIFRIED, Thomas BITZ, Frieder LOERCHER, Georg HOFMANN, Sven LOENNE
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Patent number: 10550854Abstract: An impeller wheel for fans has a bottom disc, a cover disc, and three-dimensionally shaped blades connected to the bottom disc and the cover disc. The bottom disc, cover disc, and the blades form a one-piece part. The blades have a leading edge and a trailing edge, wherein the leading edge and the trailing edge each have a median diameter. In a projection onto a cylinder that is coaxial with a rotation axis of the impeller wheel and has a diameter matching a median diameter of the trailing edge or of the leading edge, a first extension of the trailing edge and/or the leading edge is positioned at a first angle and a second extension of the trailing edge and/or the leading edge is positioned at a second angle relative to a line parallel to the rotation axis. At least one of the first and second angles is different from 0°.Type: GrantFiled: May 5, 2015Date of Patent: February 4, 2020Assignee: Ziehl-Abegg SEInventors: Frieder Lörcher, Andreas Gross, Sandra Hub, Lothar Ernemann, Georg Hofmann
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Publication number: 20190024674Abstract: A fan wheel for a fan is equipped with at least two fan blades with a wavy design. A fan has at least one such fan wheel. A system has at least one fan with such a fan wheel.Type: ApplicationFiled: August 4, 2016Publication date: January 24, 2019Applicant: ZIEHL-ABEGG SEInventors: Frieder LOERCHER, Georg HOFMANN, Sandra HUB
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Publication number: 20170335861Abstract: The invention relates to a fan wheel having blades (11) which are distributed over the circumference and are connected to one another in the circumferential direction via at least one ring. The fan wheel consists of at least three integrally formed segments (I to VII). Said segments comprise at least one respective ring portion (1) of at least one ring as well as either a blade (II) or at least a portion of the blades. The segments (I to VII) are joined together to form the fan wheel. The ring portions (1) lie against each other with edges (4, 5) which form the joining areas (15, 16) that are disposed transversely with respect to the circumferential direction of the fan wheel. At least one edge (4) of the ring portion (1) of each segment (I to VII) is provided with at least one projecting form-fitting part (18), and at least one edge (4, 5) of the ring portion (1) of each segment (I to VII) is provided with at least one recess (17) which is at least approximately complementary to the form-fitting part (18).Type: ApplicationFiled: September 24, 2015Publication date: November 23, 2017Applicant: Ziehl-Abegg SEInventors: Frieder Lörcher, Andreas Gross, Georg Hofmann, Lothar Ernemann
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Patent number: 9793777Abstract: A disk armature generator for generating electrical energy from rotational energy of a wind power installation and comprising at least two stator components mutually offset axially along a generally horizontal rotation axis of the disk armature, and comprising, mounted therebetween so as to rotate about the rotation axis, at least one ring- or disk-shaped rotor component of the disk armature, and comprising an input-side connection for a gearbox wherein the sun gear thereof, which extends coaxially with the rotation axis of the disk armature, is coupled to at least one ring- or disk-shaped rotor component of the disk armature, wherein a rolling bearing associated with a ring- or disk-shaped rotor component of the disk armature is configured as a selected one of an angular contact ball bearing and angular contact ball bearings, having a contact angle of between 40° and 50° relative to the rotation axis, comprising a double-row angular contact ball bearing in an O arrangement.Type: GrantFiled: January 30, 2012Date of Patent: October 17, 2017Assignee: IMO Holding GmbHInventors: Georg Hofmann, Stefan Sadel, Johannes Dennerlein, Erich Russ
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Patent number: 9334901Abstract: A rotary joint for use in a system for generating energy from water power, the joint comprising a first rotationally symmetrical connecting element and a second rotationally symmetrical connecting element disposed concentrically with the first connecting element and rotatable relative thereto, an annular gap between the two connecting elements, and a row of rolling elements rolling along a race on each of the connecting elements, wherein provided to seal the annular gap is a sealing device having a sealing ring fixed to the first connecting element, and a circumferential sealing lip, or sealing surface, extends along a lead-in surface, wherein the second connecting element is divided into a race ring, with at least one race, and a lead-in ring with a lead-in surface for at least one sealing ring, the lead-in ring being removably connected to at least one race ring.Type: GrantFiled: April 4, 2012Date of Patent: May 10, 2016Assignee: IMO Holding GmbHInventors: Werner Schröppel, Hubertus Frank, Georg Hofmann
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Publication number: 20150316073Abstract: An impeller wheel for fans has a bottom disc, a cover disc, and three-dimensionally shaped blades connected to the bottom disc and the cover disc. The bottom disc, cover disc, and the blades form a one-piece part. The blades have a leading edge and a trailing edge, wherein the leading edge and the trailing edge each have a median diameter. In a projection onto a cylinder that is coaxial with a rotation axis of the impeller wheel and has a diameter matching a median diameter of the trailing edge or of the leading edge, a first extension of the trailing edge and/or the leading edge is positioned at a first angle and a second extension of the trailing edge and/or the leading edge is positioned at a second angle relative to a line parallel to the rotation axis. At least one of the first and second angles is different from 0°.Type: ApplicationFiled: May 5, 2015Publication date: November 5, 2015Inventors: Frieder Lörcher, Andreas Gross, Sandra Hub, Lothar Ernemann, Georg Hofmann
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Publication number: 20140191508Abstract: A rotary joint for use in a system for generating energy from water power, the joint comprising a first rotationally symmetrical connecting element and a second rotationally symmetrical connecting element disposed concentrically with the first connecting element and rotatable relative thereto, an annular gap between the two connecting elements, and a row of rolling elements rolling along a race on each of the connecting elements, wherein provided to seal the annular gap is a sealing device having a sealing ring fixed to the first connecting element, and a circumferential sealing lip, or sealing surface, extends along a lead-in surface, wherein the second connecting element is divided into a race ring, with at least one race, and a lead-in ring with a lead-in surface for at least one sealing ring, the lead-in ring being removably connected to at least one race ring.Type: ApplicationFiled: April 4, 2012Publication date: July 10, 2014Applicant: IMO Holding GmbHInventors: Werner Schröppel, Hubertus Frank, Georg Hofmann
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Publication number: 20140124067Abstract: A valve includes a valve housing that defines a cylinder bore and a control slide that is disposed so as to be slidably mounted in the cylinder bore. The control slide has an axial position in the cylinder bore that is detectable in a contactless manner by a position sensor which generates a corresponding electrical position signal. The control slide has a change in diameter in a detection zone on an outer surface thereof. On the basis of the radial distance of the respective area of the control slide opposite the position sensor from the position sensor, the position signal is configured to be generated by the position sensor. In one embodiment, the position sensor is formed as a proximity sensor and is disposed so as to be directed radially with respect to the cylinder bore in a receiving recess of the valve housing.Type: ApplicationFiled: April 2, 2012Publication date: May 8, 2014Applicant: Robert Bosch GmbHInventors: Hubert Feser, Georg Hofmann
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Publication number: 20140125064Abstract: A disk armature generator for generating electrical energy from rotational energy of a wind power installation and comprising at least two stator components mutually offset axially along a generally horizontal rotation axis of the disk armature, and comprising, mounted therebetween so as to rotate about the rotation axis, at least one ring- or disk-shaped rotor component of the disk armature, and comprising an input-side connection for a gearbox wherein the sun gear thereof, which extends coaxially with the rotation axis of the disk armature, is coupled to at least one ring- or disk-shaped rotor component of the disk armature, wherein a rolling bearing associated with a ring- or disk-shaped rotor component of the disk armature is configured as a selected one of an angular contact ball bearing and angular contact ball bearings, having a contact angle of between 40° and 50° relative to the rotation axis, comprising a double-row angular contact ball bearing in an O arrangement.Type: ApplicationFiled: January 30, 2012Publication date: May 8, 2014Inventors: Georg Hofmann, Stefan Sadel, Johannes Dennerlein, Erich Russ
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Patent number: 8500194Abstract: An occupant detection system including a seat assembly comprising a seat cushion having a seating surface, a heating element adjacent the seating surface, said heating element formed of electrically conductive material, a heating circuit electrically coupled to the heating element, said heating circuit configured to supply an electrical current to the heating element effective to generate heat by the heating element, an occupant detection circuit electrically coupled to the heating element, said occupant detection circuit configured to detect an occupant presence near the heating element, and an isolation circuit interposed between the heating circuit and the heating element, said isolation circuit configured to prevent the heating circuit from influencing the occupant detection circuit, said isolation circuit comprising a common mode choke.Type: GrantFiled: October 20, 2010Date of Patent: August 6, 2013Assignee: Delphi Technologies, Inc.Inventors: Thomas Fischer, Ludger Oel, Georg Hofmann
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Patent number: 8256966Abstract: The invention is directed to a roller bearing arrangement comprising two rings arranged mutually concentrically and at least regionally inside each other, and comprising a gap between these rings, so that they are rotatable in opposite directions about an imaginary axis at the center of the rings and approximately perpendicular to the ring plane, wherein disposed in the region of a gap portion situated between the rings and surrounding the axis of rotation at an approximately constant radius is at least one raceway for at least one row of rollers, each having a rotationally symmetrical shape and rolling displacingly between the rings, each of which rollers, when the rings and the rollers are at the same temperature, has at least one point or region of contact with the raceway portions on each of the two rings, so that the radial and/or axial clearance between the two rings is equal to zero or at least is negligibly small; and comprising a mechanism for compensating for temperature-induced radial changes in thType: GrantFiled: December 7, 2006Date of Patent: September 4, 2012Assignee: IMO Momentenlager GmbHInventor: Georg Hofmann
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Patent number: 8190797Abstract: The concentrator couples a plurality of digital and analog sources to an audio/video reader system suitable for reading one of the sources. Each available source is associated with a source identifier and an activated or deactivated state flag, as a result of the user taking action on a source. A register (42) contains an identifier of the current source being read, and a multiple-level LIFO stack (44) stores an ordered list of identifiers of other sources on standby waiting to be read. When a new source is activated, automatic means replace the content of the register with the identifier of the new source so as to substitute the new source for the current source in order to enable it to be read by the system, and concurrently said automatic means add the identifier of the current source to the stack. The inverse operation is performed when the current source is deactivated, with the most recent source contained in the stack being substituted for the current source so as to enable it to be read by the system.Type: GrantFiled: August 26, 2008Date of Patent: May 29, 2012Assignee: ParrotInventors: Christophe Barbe, Georg Hofmann
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Patent number: D980404Type: GrantFiled: September 13, 2019Date of Patent: March 7, 2023Assignee: Ziehl-Abegg SeInventors: Frieder Lörcher, Georg Hofmann, Sandra Hub
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Patent number: D980409Type: GrantFiled: September 6, 2019Date of Patent: March 7, 2023Assignee: Ziehl-Abegg SeInventors: Tobias Gauss, Daniel Seifried, Thomas Bitz, Sven Lönne, Frieder Lörcher, Georg Hofmann
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Patent number: D989276Type: GrantFiled: October 27, 2021Date of Patent: June 13, 2023Assignee: ZIEHL-ABEGG SEInventors: Tobias Gauss, Daniel Seifried, Thomas Bitz, Sven Lönne, Frieder Lörcher, Georg Hofmann
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Patent number: D989277Type: GrantFiled: October 27, 2021Date of Patent: June 13, 2023Assignee: ZIEHL-ABEGG SEInventors: Tobias Gauss, Daniel Seifried, Thomas Bitz, Sven Lönne, Frieder Lörcher, Georg Hofmann