Patents by Inventor Reinhard von der Schmidt

Reinhard von der Schmidt 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).

  • Method and apparatus for soldering plate-shaped circuit carriers inside an inert gas soldering means
    Patent number: 4606493
    Abstract: The invention concerns preventing oxidation of printed circuit board metal surfaces as a result of heat produced in a solder bath arrangement and reducing thermal stress defects from occurring in the circuit carrier being soldered. An enclosed reaction chamber is provided with the solder bath and supplied with a pressurized atmosphere of inert gas which gas seals the reaction chamber from ambient air. The inert gas is discharged from jets against the solder side (the connector post side) of the printed circuit boards at a point upstream of the solder bath and the inert gas is at a temperature substantially higher than the solder bath temperature.
    Type: Grant
    Filed: March 14, 1984
    Date of Patent: August 19, 1986
    Assignee: Siemens Aktiengesellschaft
    Inventors: Heinz Christoph, Jurgen Gamalski, Eduard Lenz, Ulrich Neumann, Reinhard von der Schmidt