Patents by Inventor Horst Horn

Horst Horn 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).

  • Gas mixing device
    Patent number: 5614655
    Abstract: A gas distributor with critical nozzles is proposed, the nozzle cross-sections increasing by 1:2 from one to the next, and each of these nozzles being capable of admitting either a test gas or a zero gas. With four nozzles of this type, 16 linearly graduated concentrations of the test gas in the zero gas are obtained.
    Type: Grant
    Filed: September 11, 1995
    Date of Patent: March 25, 1997
    Assignee: Siemens Aktiengesellschaft
    Inventor: Horst Horn
  • Exhaust-gas analyzer
    Patent number: 5419178
    Abstract: An exhaust-gas analyzer, particularly for emissions testing of motor-vehicle engines has a sampling tube into which a mixture of exhaust gas and ambient air is fed through gas lines. A gas feed pump is disposed downstream of the sampling tube with a flowmeter inserted in the air line feeding electrical signals to a computing unit. The unit computes instantaneous standard total flow rate, allowing for gas pressure and temperature.
    Type: Grant
    Filed: April 12, 1993
    Date of Patent: May 30, 1995
    Assignee: Siemens Aktiengesellschaft
    Inventors: Hans-Josef Decker, Horst Horn
  • Exhaust-gas analyzer
    Patent number: 5218857
    Abstract: An exhaust-gas analyzer, particularly for emissions testing of motor-vehicle engines has a sampling tube into which a mixture of exhaust gas and ambient air is fed through gas lines. A gas feed pump is disposed downstream of the sampling tube with a flowmeter inserted in the air line feeding electrical signals to a computing unit. The unit computes instantaneous standard total flow rate, allowing for gas pressure and temperature.
    Type: Grant
    Filed: May 14, 1991
    Date of Patent: June 15, 1993
    Assignee: Siemens Aktiengesellschaft
    Inventors: Hans-Josef Decker, Horst Horn