Patents by Inventor Thomas Uehlin

Thomas Uehlin 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).

  • Patent number: 11300469
    Abstract: The present disclosure discloses process seals having a form retaining core and a coating of a thermoplastic sealing material for pressure sensors. The process seals can be replaced in simple manner, especially essentially without loss of measurement accuracy. The process seals are characterized by features including that they are pre-aged in a pre-aging method performable in a reproducible manner and insertable in the pressure sensor as replaceable components, wherein the process seals were clamped during the pre-aging method in a clamping apparatus exerting a clamping force thereon, wherein the clamping apparatus has a clamping geometry surrounding the process seal clamped therein, which is essentially identical to the clamping geometry surrounding the process seal in the pressure sensor.
    Type: Grant
    Filed: September 12, 2018
    Date of Patent: April 12, 2022
    Assignee: ENDRESS+HAUSER SE+CO. KG
    Inventors: Kristine Bedner, Michael Hügel, Thomas Uehlin, Miriam Volz
  • Patent number: 11255766
    Abstract: A vibronic sensor for monitoring a flowable medium, comprising: an oscillator to which a medium surrounding the oscillator can be applied; at least one electromechanical transducer for exciting the oscillator to mechanical vibrations in accordance with driver signals and/or for outputting transducer signals that depend on vibrations of the oscillator; an operating and evaluating unit for providing the driver signals for driving the electromechanical transducer, for capturing the transducer signals, and for determining the presence, the density, and/or the viscosity of the medium in accordance with the transducer signals, wherein the operating and evaluating unit is designed to detect whether the medium in the pipe has a flow velocity above a limit value on the basis of time-varying modifications of the transducer signals.
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: February 22, 2022
    Assignee: ENDRESS + HAUSER SE+CO. KG
    Inventors: Andrea Berlinger, Ingo Buschke, Christof Huber, Peter Klofer, Sergej Lopatin, Torston Pechstein, Thomas Uehlin
  • Publication number: 20210237195
    Abstract: A pressure measuring device includes a ceramic pressure sensor including a ceramic measuring membrane and a sensor mounting configured to secure the pressure sensor such that a membrane region of the measuring membrane surrounded by a membrane edge is contactable with a medium having a pressure to be measured. The sensor mounting includes a titanium or titanium alloy mounting element including an opening through which the membrane region is contactable with the medium. The membrane edge is connected directly with the mounting element by a diffusion weld produced by a diffusion welding method.
    Type: Application
    Filed: May 23, 2019
    Publication date: August 5, 2021
    Inventors: Andreas Rossberg, Anh Tuan Tham, Elke Schmidt, Nils Ponath, Jonas Conradt, Yanli Wang, Thomas Uehlin
  • Patent number: 10883892
    Abstract: A pressure measurement cell comprises: a ceramic counter body; a ceramic measuring diaphragm which is joined in a pressure-tight manner with the counter body, creating a measurement chamber between the counter body and the measuring diaphragm, by means of a circumferential joint. The measuring diaphragm can be deformed by a pressure to be measured; an electrical converter for converting a pressure-dependent deformation of the measuring diaphragm into an electrical signal; and a temperature transducer for providing at least one electrical signal dependent on a temperature or on a temperature gradient of the pressure measurement cell. The temperature transducer comprises at least one first thermocouple having a galvanic contact between a first conductor with an electrically conductive material and a second conductor with at least one second electrically conductive material.
    Type: Grant
    Filed: November 15, 2016
    Date of Patent: January 5, 2021
    Assignee: ENDRESS + HAUSER SE+CO. KG
    Inventors: Andreas Rossberg, Nils Ponath, Jan Schleiferbock, Thomas Uehlin
  • Publication number: 20200333209
    Abstract: The present disclosure discloses process seals having a form retaining core and a coating of a thermoplastic sealing material for pressure sensors. The process seals can be replaced in simple manner, especially essentially without loss of measurement accuracy. The process seals are characterized by features including that they are pre-aged in a pre-aging method performable in a reproducible manner and insertable in the pressure sensor as replaceable components, wherein the process seals were clamped during the pre-aging method in a clamping apparatus exerting a clamping force thereon, wherein the clamping apparatus has a clamping geometry surrounding the process seal clamped therein, which is essentially identical to the clamping geometry surrounding the process seal in the pressure sensor.
    Type: Application
    Filed: September 12, 2018
    Publication date: October 22, 2020
    Inventors: Kristine Bedner, Michael Hügel, Thomas Uehlin, Miriam Volz
  • Publication number: 20200264087
    Abstract: A vibronic sensor for monitoring a flowable medium, comprising: an oscillator to which a medium surrounding the oscillator can be applied; at least one electromechanical transducer for exciting the oscillator to mechanical vibrations in accordance with driver signals and/or for outputting transducer signals that depend on vibrations of the oscillator; an operating and evaluating unit for providing the driver signals for driving the electromechanical transducer, for capturing the transducer signals, and for determining the presence, the density, and/or the viscosity of the medium in accordance with the transducer signals, wherein the operating and evaluating unit is designed to detect whether the medium in the pipe has a flow velocity above a limit value on the basis of time-varying modifications of the transducer signals.
    Type: Application
    Filed: December 2, 2016
    Publication date: August 20, 2020
    Inventors: Andrea Berlinger, Ingo Buschke, Christof Huber, Peter Klofer, Sergej Lopatin, Torston Pechstein, Thomas Uehlin
  • Patent number: 10712219
    Abstract: A pressure sensor for determining a pressure measurement variable includes a housing, a pressure sensor element arranged in the housing, a lighting means arranged in the housing and a control/evaluation unit, the pressure sensor element having a semiconductor material and a measuring membrane, which has at least one integrated resistance element. When the measuring membrane experiences a pressure dependent deflection, the control/evaluation unit ascertains using the integrated resistance element, an electrical signal for determining the pressure measurement variable, wherein the lighting means optically excites the integrated resistance element, and the control/evaluation unit ascertains, based on a change of the electrical signal caused by the optical excitation, whether a malfunction of the pressure sensor is present.
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: July 14, 2020
    Assignee: Endress+Hauser SE+Co. KG
    Inventors: Max Jehle, Davide Parrotto, Thomas Uehlin
  • Publication number: 20200200632
    Abstract: A corrosion protection element is described, with which in simple and cost effective manner a reliable corrosion protection of field devices can be provided, which field devices comprise at least one component of stainless steel in contact with an environment of the field device. Corrosion protection elements of the invention are distinguished by features including that they are embodied as sacrificial anodes comprising iron or rustable steel and have a form, which is embodied in such a manner that they can be applied to the component of the field device in such a manner that the sacrificial anode is in electrically conducting contact with the component.
    Type: Application
    Filed: June 19, 2018
    Publication date: June 25, 2020
    Inventors: Sergey Lopatin, Thomas Uehlin, Michael Hügel
  • Patent number: 10533912
    Abstract: A flange-set for a pressure difference measuring transducer with two flanges mountable on external sides of a measuring mechanism of the pressure difference measuring transducer lying opposite one another and containing membranes to be loaded with pressures, as well as a pressure difference measuring transducer equipped with the flange-set. Each of the flanges comprises: a wall, which in the mounted state covers one of the two membranes of the measuring mechanism and encloses a pressure chamber bordering on such membrane. Arranged on a first side of the wall is a first process connection, which includes a pressure duct connection region, in which opens a pressure duct extending through the flange to the pressure chamber.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: January 14, 2020
    Assignee: ENDRESS+HAUSER SE+CO.KG
    Inventors: Michael Hugel, Thomas Uehlin, Benjamin Lemke
  • Patent number: 10330547
    Abstract: A pressure measuring device, comprising: a pressure measuring cell having a measuring membrane, at least one platform and a pressure chamber formed therebetween. An electrical transducer for transducing a deflection of the measuring membrane into a pressure dependent, primary signal; a cylindrical housing having a measuring cell chamber, in which the pressure measuring cell is arranged, and an end face pressure receipt opening in communication with the pressure duct; and an electronic circuit in the housing for operating the electrical transducer, and for processing the primary signal, and for outputting a measurement signal. The cylinder axis of the pressure measuring cell forms with the cylinder axis of the housing an angle, which amounts to not less than 80°, and which is especially preferably a right angle.
    Type: Grant
    Filed: March 19, 2013
    Date of Patent: June 25, 2019
    Assignee: ENDRESS+HAUSER SE+CO.KG
    Inventors: Ulfert Drewes, Nils Ponath, Michael Hugel, Thomas Uehlin
  • Patent number: 10247631
    Abstract: A differential pressure measuring cell comprises a measuring membrane; two opposing bodies; and one converter. The measuring membrane is arranged between the opposing bodies and is connected in a pressure-tight manner to the two opposing bodies, forming in each case one measuring chamber. The opposing bodies each have a pressure duct through which a pressure can be made to act upon the respective measuring chamber. The converter is provided in order to convert a deformation of the measuring membrane, which deformation is dependent upon a difference between the pressures, into an electrical signal; wherein the opposing bodies each have a chamber section oriented toward the measuring membrane and a rear wall section oriented away from the measuring membrane with, between these, a decoupling chamber.
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: April 2, 2019
    Assignee: ENDRESS+HAUSER SE+CO.KG
    Inventors: Ulfert Drewes, Michael Hugel, Nils Ponath, Andreas Rossberg, Elke Schmidt, Thomas Uehlin
  • Patent number: 10222785
    Abstract: The present disclosure relates to a method for manufacturing a component of a field device for determining or monitoring a process variable of a medium in a container, wherein the component is created via a 3D printing method, wherein during the creation the component is supplied at an intermediate state of the component with an exciter signal, wherein a response signal of the component to the exciter signal is registered, wherein shape and/or structure of the component are/is modified via the 3D printing method, when the current response signal does not agree with a predetermined response signal, and wherein the two previous method steps are alternately repeated, until the current response signal agrees with the predetermined response signal within predetermined tolerance limits.
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: March 5, 2019
    Assignee: Endress-Hauser SE+Co. KG
    Inventors: Joachim Albert, Detlev Wittmer, Marc Baret, Dietmar Spanke, Thomas Uehlin
  • Publication number: 20180364125
    Abstract: A pressure measurement cell comprises: a ceramic counter body; a ceramic measuring diaphragm which is joined in a pressure-tight manner with the counter body , creating a measurement chamber between the counter body and the measuring diaphragm , by means of a circumferential joint. The measuring diaphragm can be deformed by a pressure to be measured; an electrical converter for converting a pressure-dependent deformation of the measuring diaphragm into an electrical signal; and a temperature transducer for providing at least one electrical signal dependent on a temperature or on a temperature gradient of the pressure measurement cell. The temperature transducer comprises at least one first thermocouple having a galvanic contact between a first conductor with an electrically conductive material and a second conductor with at least one second electrically conductive material.
    Type: Application
    Filed: November 15, 2016
    Publication date: December 20, 2018
    Inventors: Andreas Rossberg, Nils Ponath, Jan Schleiferbock, Thomas Uehlin
  • Patent number: 10067023
    Abstract: A differential pressure measuring pickup comprises a measuring pickup body and a differential pressure sensor. The measuring pickup body has a process interfacing surface with a first pressure input opening and a second pressure input opening. The differential pressure sensor can be loaded with a first pressure through the first pressure input opening and with a second pressure through the second pressure input opening. The first pressure input opening is closed by way of a first separating diaphragm and the second pressure input opening is closed by way of a second separating diaphragm. The first separating diaphragm is sealed with respect to the surroundings by way of a first seal, and wherein the second separating diaphragm is sealed with respect to the surroundings by way of a second seal.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: September 4, 2018
    Assignee: ENDRESS+HAUSER SE+CO.KG
    Inventors: Michael Hugel, Thomas Uehlin, Christian Hahn
  • Publication number: 20180217017
    Abstract: A pressure sensor for determining a pressure measurement variable includes a housing, a pressure sensor element arranged in the housing, a lighting means arranged in the housing and a control/evaluation unit, the pressure sensor element having a semiconductor material and a measuring membrane, which has at least one integrated resistance element. When the measuring membrane experiences a pressure dependent deflection, the control/evaluation unit ascertains using the integrated resistance element, an electrical signal for determining the pressure measurement variable, wherein the lighting means optically excites the integrated resistance element, and the control/evaluation unit ascertains, based on a change of the electrical signal caused by the optical excitation, whether a malfunction of the pressure sensor is present.
    Type: Application
    Filed: June 22, 2016
    Publication date: August 2, 2018
    Inventors: Max Jehle, Davide Parrotto, Thomas Uehlin
  • Publication number: 20180180504
    Abstract: A pressure-measuring sensor having an electrically-conductive separating diaphragm closing off an interior chamber of the pressure-measuring sensor to the outside, to whose exterior surface a liquid medium under pressure can be applied, and having a device for detecting a diaphragm rupture of the separating diaphragm. At least one electrode is arranged on an interior surface of the separating diaphragm which faces the interior chamber, said electrode being electrically insulated from the separating diaphragm by an insulating layer arranged between the electrodes and the separating diaphragm and mechanically connected to the separating diaphragm, a measuring circuit is connected to a capacitor formed by the separating diaphragm and the electrode, said measuring circuit measuring and monitoring a measured variable dependent upon an electrical property of the capacitor, which is changed by a medium penetrating into the area of the capacitor when a diaphragm rupture of the separating diaphragm occurs.
    Type: Application
    Filed: November 18, 2015
    Publication date: June 28, 2018
    Inventors: Thomas Uehlin, Peter Klöfer, Sergej Lopatin
  • Patent number: 9976923
    Abstract: A pressure sensor comprises an operating circuit and a pressure-measuring cell comprising a counter body, a measurement membrane, which is arranged on the counter body and can be deformed by a pressure to be measured, and a capacitive transducer, which has at least one membrane electrode arranged on the measurement membrane and at least one counter-body electrode arranged on the counter body. The capacitance between the membrane electrode and the counter-body electrode depends on a pressure-dependent deformation of the measurement membrane, wherein at least the membrane electrode has a temperature-dependent impedance. The operating circuit is designed to sense at least one capacitance between the at least one counter-body electrode and the at least one membrane electrode and to provide a pressure measurement value on the basis of at least one capacitance and to determine the impedance of the membrane electrode—particularly, the ohmic portion of the impedance of the membrane electrode.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: May 22, 2018
    Assignee: Endress + Hauser GmbH + Co. KG
    Inventors: Martin Burgard, Drewes Ulfert, Nils Ponath, Andreas Rossberg, Thomas Uehlin
  • Publication number: 20180087986
    Abstract: A flange-set for a pressure difference measuring transducer with two flanges mountable on external sides of a measuring mechanism of the pressure difference measuring transducer lying opposite one another and containing membranes to be loaded with pressures, as well as a pressure difference measuring transducer equipped with the flange-set. Each of the flanges comprises: a wall, which in the mounted state covers one of the two membranes of the measuring mechanism and encloses a pressure chamber bordering on such membrane. Arranged on a first side of the wall is a first process connection, which includes a pressure duct connection region, in which opens a pressure duct extending through the flange to the pressure chamber.
    Type: Application
    Filed: September 20, 2017
    Publication date: March 29, 2018
    Inventors: Michael Hugel, Thomas Uehlin, Benjamin Lemke
  • Patent number: 9884476
    Abstract: A method for manufacture of at least one component of a field device for determining or monitoring a process variable, wherein the field device is applied in automation technology and is manufactured from at least one material.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: February 6, 2018
    Assignee: Endress + Hauser GmbH + Co. KG
    Inventors: Joachim Albert, Detlev Wittmer, Marc Baret, Thomas Uehlin, Dietmar Spanke, Benjamin Mack
  • Patent number: 9863830
    Abstract: A pressure sensor, including a platform of ceramic, a measuring membrane arranged on the platform, a pressure measuring chamber enclosed in the platform under the measuring membrane, and at least one metal body connected with the platform via a pressure-tight, preferably elastomer free, mechanical connection. Thermomechanical stresses arising from the connection are reduced by features including that the pressure-tight, mechanical connection occurs via an adapting body arranged between the platform and the metal body. The adapting body has a thermal expansion coefficient, which rises in direction (z) extending from the platform to the metal body from a coefficient of expansion corresponding to a thermal coefficient of expansion of the ceramic of the platform to a coefficient of expansion corresponding to the thermal coefficient of expansion of the metal body, and the adapting body is connected by a first joint with the platform and by a second joint with the metal body.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: January 9, 2018
    Assignee: Endress + Hauser GmbH + Co. KG
    Inventors: Ulfert Drewes, Elke Schmidt, Thomas Uehlin, Andrea Berlinger