Patents by Inventor Bernd Portmann

Bernd Portmann 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).

  • Process for checking and/or adjusting and/or assembling valves and arrangement and device for carrying out the process
    Patent number: 4782693
    Abstract: In a process for checking and/or adjustment and/or assembly of valves, in particular electronically controlled injection valves for internal combustion engines, in which the valves are conveyed along a test line having successive test stands, a test line that is fully automatic and thus free from disturbing effects of manual or semi-manual operation, with optimized flow of material and objective measurement or test results, can be obtained by coordinating computer-controlled transport systems with one another and with computer-controlled test stands by use of a higher-level control.
    Type: Grant
    Filed: July 22, 1987
    Date of Patent: November 8, 1988
    Assignee: Pierburg Luftfahrtgerate Union GmbH
    Inventors: Rainer Heyer, Gunter Stiefeling, Bernd Portmann, Josef Otulak
  • Volumetric measurement of a gas flow
    Patent number: 4305302
    Abstract: A volumetric direct gas meter is driven by a servomotor and the rotational speed of the motor is regulated in response to the pressure differential between the inlet and outlet ports of the meter so that the pressure tends to zero.
    Type: Grant
    Filed: April 27, 1979
    Date of Patent: December 15, 1981
    Assignee: Pierburg Luftfahrtgerate Union GmbH
    Inventors: Heinz Holzem, Helmut Kehrmann, Bernd Portmann