Patents by Inventor Christian Liechti

Christian Liechti 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).

  • Danger detector with a non-contact heat radiation sensor for establishing an ambient temperature
    Patent number: 9858786
    Abstract: A danger detector configured as a point detector includes an alarm housing with an alarm cover, a non-contact heat radiation sensor that is sensitive to heat radiation in the infrared range, and a treatment unit configured to determine and emit a temperature value derived from the detected heat radiation for the ambient temperature in the surroundings of the danger detector and/or an alarm, in the event that the currently determined temperature value exceeds a predetermined temperature comparison value. The heat radiation sensor is arranged in the alarm housing and is configured to optically detect the ambient temperature on the inner side of the alarm cover. The heat radiation sensor may be a thermopile designed as an SMD component.
    Type: Grant
    Filed: February 10, 2014
    Date of Patent: January 2, 2018
    Assignee: SIEMENS SCHWEIZ AG
    Inventors: Martin Fischer, Claudio Foelmli, Christian Liechti
  • Danger Detector With A Non-Contact Heat Radiation Sensor For Establishing An Ambient Temperature
    Publication number: 20150379847
    Abstract: A danger detector configured as a point detector includes an alarm housing with an alarm cover, a non-contact heat radiation sensor that is sensitive to heat radiation in the infrared range, and a treatment unit configured to determine and emit a temperature value derived from the detected heat radiation for the ambient temperature in the surroundings of the danger detector and/or an alarm, in the event that the currently determined temperature value exceeds a predetermined temperature comparison value. The heat radiation sensor is arranged in the alarm housing and is configured to optically detect the ambient temperature on the inner side of the alarm cover. The heat radiation sensor may be a thermopile designed as an SMD component.
    Type: Application
    Filed: February 10, 2014
    Publication date: December 31, 2015
    Applicant: Siemens Schweiz AG
    Inventors: Martin Fischer, Claudio Foelmli, Christian Liechti
  • Display for an electronic weighing scale
    Patent number: D290097
    Type: Grant
    Filed: January 10, 1985
    Date of Patent: June 2, 1987
    Assignee: Mettler Instrumente AG
    Inventors: Arthur Baumann, Rudolf Bachmann, Christian Liechti