Patents by Inventor Uwe Wolfarth
Uwe Wolfarth 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: 11779999Abstract: The invention relates to a method for producing a connecting element comprising at least two ball-like sections, wherein two ball-like sections are directly adjacent to each other, or wherein two ball-like sections are connected to each other by means of a connecting section, wherein the rolling of a single-piece blank, which is cylindrical at least in sections, between at least two rolling tools and the shaping of the at least two ball-like sections and optionally of the connecting section during the rolling are provided.Type: GrantFiled: November 19, 2018Date of Patent: October 10, 2023Inventors: Uwe Wolfarth, Bernd Werthwein
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Patent number: 11517974Abstract: Device (10) for manufacturing a component compound by resistance welding, comprises a welding electrode (12) for transmitting an electric current to a joining element (17) and for exerting a joining force onto the joining element (17) along a joining direction (22) in order to establish a connection of the joining element (17) with a structural element by resistance welding; as well as a positioning device (20) for positioning at least one joining element (17) on the axis of the joining direction (22) in order to contact and particularly apply a force to the joining element (17) by means of the welding electrode (12). The positioning device (20) comprises a retention device (30) for exerting a retention force onto the joining element (17), wherein the retention device (30) is movably arranged.Type: GrantFiled: June 5, 2018Date of Patent: December 6, 2022Assignees: Volkswagen AG, ARNOLD UMFORMTECHNIK GMBH & CO. KGInventors: Thomas Noack, Friedrich Beck, Uwe Wolfarth, Lars Wiese, Christoffer Meyer
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Publication number: 20200384524Abstract: The invention relates to a method for producing a connecting element comprising at least two ball-like sections, wherein two ball-like sections are directly adjacent to each other, or wherein two ball-like sections are connected to each other by means of a connecting section, wherein the rolling of a single-piece blank, which is cylindrical at least in sections, between at least two rolling tools and the shaping of the at least two ball-like sections and optionally of the connecting section during the rolling are provided.Type: ApplicationFiled: November 19, 2018Publication date: December 10, 2020Inventors: Uwe Wolfarth, Bernd Werthwein
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Publication number: 20180345403Abstract: Device (10) for manufacturing a component compound by resistance welding, comprises a welding electrode (12) for transmitting an electric current to a joining element (17) and for exerting a joining force onto the joining element (17) along a joining direction (22) in order to establish a connection of the joining element (17) with a structural element by resistance welding; as well as a positioning device (20) for positioning at least one joining element (17) on the axis of the joining direction (22) in order to contact and particularly apply a force to the joining element (17) by means of the welding electrode (12). The positioning device (20) comprises a retention device (30) for exerting a retention force onto the joining element (17), wherein the retention device (30) is movably arranged.Type: ApplicationFiled: June 5, 2018Publication date: December 6, 2018Applicants: Volkswagen AG, Arnold & Shinjo GmbH & Co. KGInventors: Thomas Noack, Friedrich Beck, Uwe Wolfarth, Lars Wiese, Christoffer Meyer
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Publication number: 20180154488Abstract: The invention relates to an apparatus comprising an advancing device and a blocking device (4), having a lever (40) that is adjustable between a blocking position and a releasing position, and to a method for positioning connecting elements, wherein a connecting element (2) is transferable by means of the advancing device (3) from a receiving region (I) into a delivery region (II) for a joining device, wherein the at least one lever (40) prevents any movement of the connecting element (2) from the receiving region (I) into the delivery region (II) in the blocking position and enables same in the releasing position, and wherein, by means of an end stop, any movement of the lever (40) from the blocking position into the releasing position is preventable.Type: ApplicationFiled: May 27, 2016Publication date: June 7, 2018Inventors: Uwe WOLFARTH, Joachim LUTZ, Alex LINDT
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Patent number: 8480342Abstract: The invention concerns a screw, in particular a self-tapping screw, with a screw thread which reaches to the front end of the screw formed as a drilling tip. In the front area, starting with a distance from the front end of the screw, there is an opposite thread showing the same pitch as the screw thread, however, its thread height is lower than the thread height of the screw thread. This second, opposite single-thread, double-thread or triple-thread/multi-thread only reaches over the tapered drilling tip and leaves the shank of the screw free. It forms a cutting edge with its thread edge which is used to cut fibers in order to reduce wedge effect during screwing in the screw. The screw is particularly suitable for wood or wood-like materials in the edge areas of structural elements.Type: GrantFiled: May 15, 2008Date of Patent: July 9, 2013Assignees: Wuerth International AG part interest, SWG Schraubenwerk Gaisbach GmbH part interestInventors: Guenter Stiebitz, Uwe Wolfarth
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Patent number: 8408855Abstract: A screw, in particular a self-tapping screw, has a screw thread which covers up to the front end of the screw formed as a drilling tip or cutting tip. In the front area, starting with a distance from the front end of the screw, there is an opposite thread showing the same pitch as the screw thread, however, its thread height is lower than the thread height of the screw thread. This second, opposite single-thread, double-thread or triple-thread/multi-thread forms a cutting edge with its thread edge which is used to cut fibers in order to reduce wedge effect during screwing in the screw. The screw is particularly suitable for wood or wood-like materials in the edge areas of structural elements.Type: GrantFiled: April 15, 2010Date of Patent: April 2, 2013Assignees: SWG Schraubenwerk Gaisbach GmbH, Wuerth International AGInventors: Günter Stiebitz, Uwe Wolfarth
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Publication number: 20110097178Abstract: A screw, in particular a self-tapping screw, has a screw thread which covers up to the front end of the screw formed as a drilling tip or cutting tip. In the front area, starting with a distance from the front end of the screw, there is an opposite thread showing the same pitch as the screw thread, however, its thread height is lower than the thread height of the screw thread. This second, opposite single-thread, double-thread or triple-thread/multi-thread forms a cutting edge with its thread edge which is used to cut fibers in order to reduce wedge effect during screwing in the screw. The screw is particularly suitable for wood or wood-like materials in the edge areas of structural elements.Type: ApplicationFiled: April 15, 2010Publication date: April 28, 2011Inventors: Günter Stiebitz, Uwe Wolfarth
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Patent number: 7862279Abstract: A screw, in particular a self-tapping screw, has a screw thread which covers up to the front end of the screw formed as a drilling tip or cutting tip. In the front area, starting with a distance from the front end of the screw, there is an opposite thread showing the same pitch as the screw thread, however, its thread height is lower than the thread height of the screw thread. This second, opposite single-thread, double-thread or triple-thread/multi-thread forms a cutting edge with its thread edge which is used to cut fibers in order to reduce wedge effect during screwing in the screw. The screw is particularly suitable for wood or wood-like materials in the edge areas of structural elements.Type: GrantFiled: November 16, 2007Date of Patent: January 4, 2011Assignees: SWG Schraubenwerk Gaisbach GmbH, Wuerth International AGInventors: Günter Stiebitz, Uwe Wolfarth
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Publication number: 20080286072Abstract: The invention concerns a screw, in particular a self-tapping screw, with a screw thread which reaches to the front end of the screw formed as a drilling tip. In the front area, starting with a distance from the front end of the screw, there is an opposite thread showing the same pitch as the screw thread, however, its thread height is lower than the thread height of the screw thread. This second, opposite single-thread, double-thread or triple-thread/multi-thread only reaches over the tapered drilling tip and leaves the shank of the screw free. It forms a cutting edge with its thread edge which is used to cut fibers in order to reduce wedge effect during screwing in the screw. The screw is particularly suitable for wood or wood-like materials in the edge areas of structural elements.Type: ApplicationFiled: May 15, 2008Publication date: November 20, 2008Inventors: Guenter Stiebitz, Uwe Wolfarth
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Publication number: 20080118330Abstract: The invention concerns a screw, in particular a self-tapping screw, showing a screw thread which covers up to the front end of the screw formed as a drilling tip or cutting tip. In the front area, starting with a distance from the front end of the screw, there is an opposite thread showing the same pitch as the screw thread, however, its thread height is lower than the thread height of the screw thread. This second, opposite single-thread, double-thread or triple-thread/multi-thread forms a cutting edge with its thread edge which is used to cut fibers in order to reduce wedge effect during screwing in the screw. The screw is particularly suitable for wood or wood-like materials in the edge areas of structural elements.Type: ApplicationFiled: November 16, 2007Publication date: May 22, 2008Inventors: Gunter Stiebitz, Uwe Wolfarth