Patents by Inventor Friedrich Helmsen
Friedrich Helmsen 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: 11131574Abstract: A pot magnet (20) for a moving coil (10) of an electronic balance operating using the electromagnetic compensation principle includes: —a pot base (24) and a pot wall (22) rising vertically from the pot base, and —a permanent magnet structure (26) disposed within the pot wall and having an annular gap thereto, which structure has a permanent magnet body (261) arranged on the pot base side and a pole plate (262) connected to the surface thereof facing away from the pot base side. The pole plate is fixed by a rigid mechanical connection independent of the permanent magnet body to the pot base at a predetermined distance therefrom and the permanent magnet body is bonded to the pole plate on a surface facing the pot base without contacting the pot base.Type: GrantFiled: November 4, 2019Date of Patent: September 28, 2021Assignee: SARTORIUS LAB INSTRUMENTS GMBH & CO., KGInventors: Lars Bornemann, Michael Mueller, Christian Schrader, Friedrich Helmsen, Jonas Bode, Tanja Mueck
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Publication number: 20200064178Abstract: A pot magnet (20) for a moving coil (10) of an electronic balance operating using the electromagnetic compensation principle includes: a pot base (24) and a pot wall (22) rising vertically from the pot base, and a permanent magnet structure (26) disposed within the pot wall and having an annular gap thereto, which structure has a permanent magnet body (261) arranged on the pot base side and a pole plate (262) connected to the surface thereof facing away from the pot base side. The pole plate is fixed by a rigid mechanical connection independent of the permanent magnet body to the pot base at a predetermined distance therefrom and the permanent magnet body is bonded to the pole plate on a surface facing the pot base without contacting the pot base.Type: ApplicationFiled: November 4, 2019Publication date: February 27, 2020Inventors: Lars BORNEMANN, Michael MUELLER, Christian SCHRADER, Friedrich HELMSEN, Jonas BODE, Tanja MUECK
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Patent number: 10036766Abstract: A method for producing a force-measuring element (10) having at least one articulation point (20) which separates one region of the force-measuring element (10) into two connected subregions (11, 12) which can be deflected in relation to one another. The method includes: providing a force-measuring element blank (10), removing material from the force-measuring element blank (10) in order to produce the articulation point (20), checking whether the deflection behavior of the subregions (11, 12) which is produced by the articulation point corresponds to a predefined specification, defining a correction form (30) which can be produced through material removal and compensates for an ascertained deviation from the predefined specification, correcting the articulation point geometry using a laser and the previously defined correction form (30), through material removal at the articulation point.Type: GrantFiled: January 29, 2016Date of Patent: July 31, 2018Assignee: Sartorius Lab Instruments GmbH & CO. KGInventors: Winfried Graf, Friedrich Helmsen, Detlev Erben, Helga Covic, Tanja Mueck
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Publication number: 20160223591Abstract: A method for producing a force-measuring element (10) having at least one articulation point (20) which separates one region of the force-measuring element (10) into two connected subregions (11, 12) which can be deflected in relation to one another. The method includes: providing a force-measuring element blank (10), removing material from the force-measuring element blank (10) in order to produce the articulation point (20), checking whether the deflection behavior of the subregions (11, 12) which is produced by the articulation point corresponds to a predefined specification, defining a correction form (30) which can be produced through material removal and compensates for an ascertained deviation from the predefined specification, correcting the articulation point geometry using a laser and the previously defined correction form (30), through material removal at the articulation point.Type: ApplicationFiled: January 29, 2016Publication date: August 4, 2016Inventors: Winfried GRAF, Friedrich HELMSEN, Detlev ERBEN, Helga COVIC, Tanja MUECK
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Patent number: 7534971Abstract: A weighing system having a base region (1), a parallel-guided load receiver (4), at least one transmission lever (2) that is pivotably mounted on the base region via at least one flexural pivot (3), and a coupling element (7) that connects the load sensor to the short lever arm of the transmission lever. The flexural pivot (3), at least one part of the transmission lever (2), and at least one part of the base region (1?) are monolithically formed from a block. The flexural pivot (3) is separated from the rest of the block by four horizontal parallel bores (31, 32, 33, 34) that are adjacently arranged in an annular manner in such a way as to respectively leave a thin connecting segment (36, 37, 38 39) between adjacent bores, and by additional slots. In this way, a hysteresis-free flexural pivot can be created without the need for separate assembly components.Type: GrantFiled: August 6, 2007Date of Patent: May 19, 2009Assignee: Sartorius AGInventors: Otto Kuhlmann, Peter Fleischer, Friedrich Helmsen, Thomas Fehling
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Patent number: 7495186Abstract: A weighing system having a base region (1), a parallel-guided load receiver (4), at least one transmission lever (2) that is pivotably mounted on the base region via at least one flexural pivot (3), and a coupling element (7) that connects the load sensor to the short lever arm of the transmission lever. The flexural pivot (3), at least one part of the transmission lever (2), and at least one part of the base region (1?) are monolithically formed from a block. The flexural pivot (3) is separated from the rest of the block, and at least one spring connecting segment (36/35/38, 37/35?/39) of the flexural pivot (3) includes two spaced-apart thin material points (36, 38; 37, 39). In this way, a hysteresis-free flexural pivot can be created without the need for separate assembly components.Type: GrantFiled: August 6, 2007Date of Patent: February 24, 2009Assignee: Sartorius AGInventors: Otto Kuhlmann, Peter Fleischer, Friedrich Helmsen, Thomas Fehling
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Publication number: 20080029315Abstract: A weighing system having a base region (1), a parallel-guided load receiver (4), at least one transmission lever (2) that is pivotably mounted on the base region via at least one flexural pivot (3), and a coupling element (7) that connects the load sensor to the short lever arm of the transmission lever. The flexural pivot (3), at least one part of the transmission lever (2), and at least one part of the base region (1?) are monolithically formed from a block. The flexural pivot (3) is separated from the rest of the block by four horizontal parallel bores (31, 32, 33, 34) that are adjacently arranged in an annular manner in such a way as to respectively leave a thin connecting segment (36, 37, 38 39) between adjacent bores, and by additional slots. In this way, a hysteresis-free flexural pivot can be created without the need for separate assembly components.Type: ApplicationFiled: August 6, 2007Publication date: February 7, 2008Applicant: Sartorius AGInventors: Otto Kuhlmann, Peter Fleischer, Friedrich Helmsen, Thomas Fehling
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Publication number: 20080029314Abstract: A weighing system having a base region (1), a parallel-guided load receiver (4), at least one transmission lever (2) that is pivotably mounted on the base region via at least one flexural pivot (3), and a coupling element (7) that connects the load sensor to the short lever arm of the transmission lever. The flexural pivot (3), at least one part of the transmission lever (2), and at least one part of the base region (1?) are monolithically formed from a block. The flexural pivot (3) is separated from the rest of the block, and at least one spring connecting segment (36/35/38, 37/35?/39) of the flexural pivot (3) includes two spaced-apart thin material points (36, 38; 37, 39). In this way, a hysteresis-free flexural pivot can be created without the need for separate assembly components.Type: ApplicationFiled: August 6, 2007Publication date: February 7, 2008Applicant: Sartorius AGInventors: Otto Kuhlmann, Peter Fleischer, Friedrich Helmsen, Thomas Fehling
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Patent number: 6861593Abstract: A weighing sensor including a base (1) fixed to a housing, a load sensor (2) connected to the base in a displaceable manner via two arms (3, 4), a lever system (8 . . . 11) having at least one lever and transmitting the load acting on the load sensor to a transducer (12, 13), and a built-in calibration weight (40) which may be lowered onto a support region (30/38) for checking and/or calibrating the sensitivity of the weighing sensor. The support region is guided in a parallel manner by two additional arms (21, 22) and is connected to a lever (9/39) of the lever system (8 . . . 11) via a coupling element (26). Relatively large loads on the weighing sensor may be simulated with relatively small calibration weights, without the need for complicated lifting devices. The two additional arms (21, 22) are connected on the one hand to the support region (30/38) and on the other hand to the load sensor (2) and are located on the side of the load sensor (2) opposite from the lever system (8 . . . 11).Type: GrantFiled: May 5, 2003Date of Patent: March 1, 2005Assignee: Sartorius AktiengesellschaftInventors: Otto Kuhlmann, Thorsten Capelle, Peter Fleischer, Friedrich Helmsen, Detlev Erben, Rudolf Mueller
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Publication number: 20040003948Abstract: A weighing sensor including a base (1) fixed to a housing, a load sensor (2) connected to the base in a displaceable manner via two arms (3, 4), a lever system (8 . . . 11) having at least one lever and transmitting the load acting on the load sensor to a transducer (12, 13), and a built-in calibration weight (40) which may be lowered onto a support region (30/38) for checking and/or calibrating the sensitivity of the weighing sensor. The support region is guided in a parallel manner by two additional arms (21, 22) and is connected to a lever (9/39) of the lever system (8 . . . 11) via a coupling element (26). Relatively large loads on the weighing sensor may be simulated with relatively small calibration weights, without the need for complicated lifting devices. The two additional arms (21, 22) are connected on the one hand to the support region (30/38) and on the other hand to the load sensor (2) and are located on the side of the load sensor (2) opposite from the lever system (8 . . . 11).Type: ApplicationFiled: May 5, 2003Publication date: January 8, 2004Applicant: SARTORIUS AGInventors: Otto Kuhlmann, Thorsten Capelle, Peter Fleischer, Friedrich Helmsen, Detlev Erben, Rudolf Mueller