Patents by Inventor Andri Lehmann

Andri Lehmann 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).

  • Publication number: 20230398624
    Abstract: A device for measuring a welding force and for detecting a welding voltage during a welding process of a resistance welding device, which resistance welding device includes a welding gun with two electrode arms, includes two contact sockets for placing the device at the electrode arms. A sensor element is included for measuring the welding force exerted by the electrode arms during a welding process. A component is included and configured and disposed for detecting the welding voltage during the welding process. A coupling element is configured and disposed so that when the device is placed at the electrode arms, the coupling element mechanically couples the device to the resistance welding device.
    Type: Application
    Filed: June 7, 2023
    Publication date: December 14, 2023
    Inventors: Andri Lehmann, Davorin Konic, Stefan Koch
  • Patent number: 11397118
    Abstract: A contact force measuring device for measuring a contact force of a spring contact includes a measuring probe having a height in a contact region identical to the height of the contact pin that fits into an opening defined between a pair of opposing spring contact arms of the spring contact. The probe includes an upper insulator element attached to an upper side of a piezoelectric element, and a lower insulator element is attached to a lower side of the piezoelectric element opposite the upper side. The contact force measuring device includes a holding device connected to one end of the probe, an evaluation unit, a supporting device and a positioning device.
    Type: Grant
    Filed: June 18, 2020
    Date of Patent: July 26, 2022
    Assignee: Kistler Holding AG
    Inventors: Reinhard Staub, Andri Lehmann, Claudio Cavalloni
  • Publication number: 20200408624
    Abstract: A contact force measuring device for measuring a contact force of a spring contact includes a measuring probe having a height in a contact region identical to the height of the contact pin that fits into an opening defined between a pair of opposing spring contact arms of the spring contact. The probe includes an upper insulator element attached to an upper side of a piezoelectric element, and a lower insulator element is attached to a lower side of the piezoelectric element opposite the upper side. The contact force measuring device includes a holding device connected to one end of the probe, an evaluation unit, a supporting device and a positioning device.
    Type: Application
    Filed: June 18, 2020
    Publication date: December 31, 2020
    Inventors: REINHARD STAUB, ANDRI LEHMANN, CLAUDIO CAVALLONI
  • Patent number: 10479011
    Abstract: A production machine in the plastics processing industry includes multiple cavities and multiple piezoelectric pressure transducers. At least one piezoelectric pressure transducer is arranged at each cavity and captures an internal tool pressure inside the cavity and returns an electrical charge signal for each internal tool pressure detected. A cabling interface conducts the electrical charge signal away from piezoelectric pressure transducer via an inner cable. Each of the inner cables can be connected electrically to the cabling interface via at least two different connection standards.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: November 19, 2019
    Assignee: Kistler Holding AG
    Inventor: Andri Lehmann
  • Publication number: 20170050360
    Abstract: A production machine in the plastics processing industry includes multiple cavities and multiple piezoelectric pressure transducers. At least one piezoelectric pressure transducer is arranged at each cavity and captures an internal tool pressure inside the cavity and returns an electrical charge signal for each internal tool pressure detected. A cabling interface conducts the electrical charge signal away from piezoelectric pressure transducer via an inner cable. Each of the inner cables can be connected electrically to the cabling interface via at least two different connection standards.
    Type: Application
    Filed: August 11, 2016
    Publication date: February 23, 2017
    Inventor: ANDRI LEHMANN
  • Patent number: 8042413
    Abstract: A piezoelectric sensor for bending moment measurements has measuring elements separating at their axes and electrically connecting both halves with their opposing directions of polarization. Such a sensor, mounted with its axis on the neutral bending axis of a machine structure, thus measures concurrently both tension and compression of the machine on both sides of the axis thereof.
    Type: Grant
    Filed: June 11, 2007
    Date of Patent: October 25, 2011
    Assignee: Kistler Holding AG
    Inventors: Georges Schaffner, Andreas Kirchheim, Andri Lehmann
  • Publication number: 20090235762
    Abstract: A piezoelectric sensor for bending moment measurements has measuring elements separating at their axes and electrically connecting both halves with their opposing directions of polarization. Such a sensor, mounted with its axis on the neutral bending axis of a machine structure, thus measures concurrently both tension and compression of the machine on both sides of the axis thereof.
    Type: Application
    Filed: June 11, 2007
    Publication date: September 24, 2009
    Applicant: Kistler Holding AG
    Inventors: Georges Schaffner, Andreas Kirchheim, Andri Lehmann
  • Patent number: 7493836
    Abstract: The invention relates to a measuring sensor held under pre-stress for measuring forces and/or torques. In the inventive embodiment, a sensor is integrated into an adapter sleeve, which is configured in a compact manner in such a way that it is equipped with devices for connection to an adapter part and devices for fixing to a measuring component. The sensor is subjected to the required pre-stress by connecting the adapter sleeve to the adapter part. An amplification module can also be mounted in the adapter sleeve.
    Type: Grant
    Filed: February 5, 2004
    Date of Patent: February 24, 2009
    Assignee: Kistler Holding, AG
    Inventors: Peter Wolfer, Andri Lehmann, Georges Schaffner
  • Publication number: 20070034027
    Abstract: The invention relates to a measuring sensor held under pre-stress for measuring forces and /or torques. In the inventive embodiment, a sensor is integrated into an adapter sleeve, which is configured in a compact manner in such a way that it is equipped with devices for connection to an adapter part and devices for fixing to a measuring component. The sensor is subjected to the required pre-stress by connecting the adapter sleeve to the adapter part. An amplification module can also be mounted in the adapter sleeve.
    Type: Application
    Filed: February 5, 2004
    Publication date: February 15, 2007
    Inventors: Peter Wolfer, Andri Lehmann, Georges Schaffner