Patents by Inventor Marco Laffranchi
Marco Laffranchi 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: 20230288444Abstract: An acceleration transducer defines a rectangular coordinate system with two orthogonal horizontal axes that are both normal to a vertical axis and includes a main body defining tangential side faces arranged tangentially to the vertical axis, and normal side faces arranged normally to the vertical axis. The transducer includes at least a first piezoelectric element secured to one the three tangential side faces, and exactly one seismic mass is secured to the at least one piezoelectric element, which has a high sensitivity for a shear force exerted by the attached seismic mass along a principal tangential axis and a low sensitivity for a shear force exerted by the attached seismic mass along another one of the three axes.Type: ApplicationFiled: April 26, 2023Publication date: September 14, 2023Inventors: Marco Laffranchi, Tobias Frommenwiler, David Weber
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Patent number: 11754589Abstract: An acceleration transducer defines a rectangular coordinate system with two orthogonal horizontal axes that are both normal to a vertical axis and includes a main body disposed within a housing and defining tangential side faces arranged tangentially to the vertical axis, and a normal side face arranged normally to the vertical axis. A piezoelectric element is secured to one of the tangential side faces, and a seismic mass secured to the piezoelectric element. A signal output is attached to the housing and includes a signal conductor spaced apart by an assembly gap from a tangential side face that is not attached to the piezoelectric element. The assembly gap extends perpendicularly to the vertical axis. The normal side face includes main body output conductors spanning the assembly gap in a direction perpendicular to the vertical axis and directly contacting the signal conductor.Type: GrantFiled: October 29, 2021Date of Patent: September 12, 2023Assignee: KISTLER HOLDING AGInventors: Marco Laffranchi, Tobias Frommenwiler, David Weber
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Patent number: 11747361Abstract: An acceleration transducer defines a rectangular coordinate system with two orthogonal horizontal axes that are both normal to a vertical axis and includes a main body defining tangential side faces arranged tangentially to the vertical axis, and normal side faces arranged normally to the vertical axis. The transducer includes a converter unit, exactly three piezoelectric elements and three seismic masses. Each piezoelectric element generates piezoelectric charges transmitted to the converter unit, which is only and directly arranged on a normal side face of the main body or only on a support that is attached to a normal side face of the main body. Exactly one piezoelectric element is secured to each of the three tangential side faces, and exactly one seismic mass is secured to each of the three piezoelectric elements.Type: GrantFiled: October 29, 2021Date of Patent: September 5, 2023Assignee: Kistler Holding AGInventors: Marco Laffranchi, Tobias Frommenwiler, David Weber
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Publication number: 20230258685Abstract: An acceleration transducer defines a rectangular coordinate system with two orthogonal horizontal axes that are both normal to a vertical axis and includes a main body disposed within a housing and defining tangential side faces arranged tangentially to the vertical axis, and a normal side face arranged normally to the vertical axis. A piezoelectric element is secured to one of the tangential side faces, and a seismic mass is secured to the piezoelectric element. A signal output is attached to the housing and includes a signal conductor spaced apart by an assembly gap from a tangential side face that is not attached to the piezoelectric element. The assembly gap extends perpendicularly to the vertical axis. The normal side face includes at least one main body output conductor spanning the assembly gap in a direction perpendicular to the vertical axis and directly contacting the signal conductor.Type: ApplicationFiled: April 26, 2023Publication date: August 17, 2023Inventors: Marco Laffranchi, Tobias Frommenwiler, David Weber
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Patent number: 11668728Abstract: An acceleration transducer defines a rectangular coordinate system with two orthogonal horizontal axes that are both normal to a vertical axis and includes a main body defining tangential side faces arranged tangentially to the vertical axis, and normal side faces arranged normally to the vertical axis. The transducer includes exactly three piezoelectric elements and three seismic masses. Exactly one piezoelectric element is secured to each of the three tangential side faces, and exactly one seismic mass is secured to each of the three piezoelectric elements. Each piezoelectric element has a high sensitivity for a shear force exerted by the attached seismic mass along a principal tangential axis that is another one of the three axes for each of the three piezoelectric elements.Type: GrantFiled: October 29, 2021Date of Patent: June 6, 2023Assignee: KISTLER HOLDING AGInventors: Marco Laffranchi, Tobias Frommenwiler, David Weber
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Publication number: 20220397436Abstract: A transducer element for the detection of a transverse transition pressure of a shock wave includes a body that extends along a longitudinal axis and includes a nose portion and a measurement portion disposed adjacent the nose portion, which tapers along the longitudinal axis from the measurement portion until a nose end. The measurement portion contains at least three pressure transducers with respective pressure-sensitive pressure receiving surfaces arranged parallel to the longitudinal axis. The three pressure transducers are spaced apart from each other at a distance along the longitudinal axis. The transducer element is configured for determining the velocity and the acceleration of the shock wave.Type: ApplicationFiled: June 8, 2022Publication date: December 15, 2022Inventors: David Weber, Tobias Frommenwiler, Marco Laffranchi, Andreas Wyss
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Publication number: 20220302366Abstract: A piezoelectric transducer includes a transducer unit disposed within a watertight and gas-tight housing and having at least one piezoelectric element contacted by at least two electrodes. A signal lead-through is electrically connected to the electrodes and configured conducting polarization charges as signals from the piezoelectric element through the housing to an environment outside of the housing. A signal cable arranged outside of the housing includes at least two signal conductors. The signal lead-through includes a support element having at least two conducting paths in electrical contact with one of the signal conductors.Type: ApplicationFiled: March 16, 2022Publication date: September 22, 2022Inventors: Marco Laffranchi, David Weber, Tobias Frommenwiler, Andreas Wyss
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Publication number: 20220137090Abstract: An acceleration transducer defines a rectangular coordinate system with two orthogonal horizontal axes that are both normal to a vertical axis and includes a main body defining tangential side faces arranged tangentially to the vertical axis, and normal side faces arranged normally to the vertical axis. The transducer includes a converter unit, exactly three piezoelectric elements and three seismic masses. Each piezoelectric element generates piezoelectric charges transmitted to the converter unit, which is only and directly arranged on a normal side face of the main body or only on a support that is attached to a normal side face of the main body. Exactly one piezoelectric element is secured to each of the three tangential side faces, and exactly one seismic mass is secured to each of the three piezoelectric elements.Type: ApplicationFiled: October 29, 2021Publication date: May 5, 2022Inventors: Marco Laffranchi, Tobias Frommenwiler, David Weber
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Publication number: 20220137089Abstract: An acceleration transducer defines a rectangular coordinate system with two orthogonal horizontal axes that are both normal to a vertical axis and includes a main body defining tangential side faces arranged tangentially to the vertical axis, and normal side faces arranged normally to the vertical axis. The transducer includes exactly three piezoelectric elements and three seismic masses. Exactly one piezoelectric element is secured to each of the three tangential side faces, and exactly one seismic mass is secured to each of the three piezoelectric elements. Each piezoelectric element has a high sensitivity for a shear force exerted by the attached seismic mass along a principal tangential axis that is another one of the three axes for each of the three piezoelectric elements.Type: ApplicationFiled: October 29, 2021Publication date: May 5, 2022Inventors: Marco Laffranchi, Tobias Frommenwiler, David Weber
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Publication number: 20220137086Abstract: An acceleration transducer defines a rectangular coordinate system with two orthogonal horizontal axes that are both normal to a vertical axis and includes a main body disposed within a housing and defining tangential side faces arranged tangentially to the vertical axis, and a normal side face arranged normally to the vertical axis. A piezoelectric element is secured to one of the tangential side faces, and a seismic mass secured to the piezoelectric element. A signal output is attached to the housing and includes a signal conductor spaced apart by an assembly gap from a tangential side face that is not attached to the piezoelectric element. The assembly gap extends perpendicularly to the vertical axis. The normal side face includes main body output conductors spanning the assembly gap in a direction perpendicular to the vertical axis and directly contacting the signal conductor.Type: ApplicationFiled: October 29, 2021Publication date: May 5, 2022Inventors: Marco Laffranchi, Tobias Frommenwiler, David Weber
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Patent number: D1008059Type: GrantFiled: March 30, 2022Date of Patent: December 19, 2023Assignee: Kistler Holding AGInventors: Marco Laffranchi, Tobias Frommenwiler, David Weber, Andreas Wyss