Patents by Inventor Gerhard Gruener

Gerhard Gruener 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).

  • Photoelectric smoke detector and process for testing the photoelectric smoke detector
    Patent number: 9117359
    Abstract: A photoelectric smoke detector 1 for detecting smoke particles 4 is disclosed, the smoke detector 1 comprising: a light emitting element 5, a light receiving element 6 for receiving light 8 emitted by the light emitting element 5 and scattered by the smoke particles 4 and for outputting a detection signal 12 obtained by photoelectrical converting the received light 10, 11, an amplifier circuit 13 for amplifying the detection signal 12 and providing an amplified output signal 14, wherein the amplified output signal 14 may be divided into an offset-signal 20 and an amplified detection signal 21, whereby the photoelectric smoke detector 1 is adapted to operate in a pulsed mode, so that the detection signal 12 comprises high-frequency components, whereby the amplified detection signal 21 is determined by high-frequency components of the detection signal 12 and that the offset-signal 20 is determined by low-frequency components of the detection signal 12 and/or by low-frequency components of at least an intermedia
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: August 25, 2015
    Assignee: Robert Bosch GmbH
    Inventors: Thomas Hanses, Gerhard Gruener, Wolfgang Werkmeister, Joerg Tuermer
  • PHOTOELECTRIC SMOKE DETECTOR AND PROCESS FOR TESTING THE PHOTOELECTRIC SMOKE DETECTOR
    Publication number: 20140015668
    Abstract: A photoelectric smoke detector 1 for detecting smoke particles 4 is disclosed, the smoke detector 1 comprising: a light emitting element 5, a light receiving element 6 for receiving light 8 emitted by the light emitting element 5 and scattered by the smoke particles 4 and for outputting a detection signal 12 obtained by photoelectrical converting the received light 10, 11, an amplifier circuit 13 for amplifying the detection signal 12 and providing an amplified output signal 14, wherein the amplified output signal 14 may be divided into an offset-signal 20 and an amplified detection signal 21, whereby the photoelectric smoke detector 1 is adapted to operate in a pulsed mode, so that the detection signal 12 comprises high-frequency components, whereby the amplified detection signal 21 is determined by high-frequency components of the detection signal 12 and that the offset-signal 20 is determined by low-frequency components of the detection signal 12 and/or by low-frequency components of at least an intermedia
    Type: Application
    Filed: March 28, 2011
    Publication date: January 16, 2014
    Applicant: ROBERT BOSCH GMBH
    Inventors: Thomas Hanses, Gerhard Gruener, Wolfgang Werkmeister, Joerg Tuermer