Patents by Inventor Martin Bemba

Martin Bemba 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: 6218950
    Abstract: A scattered light fire detector and a method for evaluating scattering signals of a fire detector are disclosed. The microprocessor-based scattered light fire detector measures the scattering signals at two scattering angles and determines an alarm threshold. An alarm value is determined as a function of the ratio of the scattering signals and compared with the determined alarm threshold. The fire detector can be used with mixed fires without prior calibration. Fraudulent measurement values arising, for example, from water vapor can be stored in a memory.
    Type: Grant
    Filed: January 19, 2000
    Date of Patent: April 17, 2001
    Assignee: Caradon Esser GmbH
    Inventors: Heiner Politze, Martin Bemba, Tido Krippendorf