Patents by Inventor Hubert Schuermann

Hubert Schuermann 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 resistance welding arrangement for carrying out the process
    Patent number: 5489757
    Abstract: A process and apparatus for resistance-welding produce a welding current which pulsates in periodic half-waves, in particular an alternating current. The, welding current is generated from a primary alternating voltage which is chopped n times (n>1) in each half-wave and pulse width modulated in order to regulate the welding current. A regulator is provided and has a storage device containing the current nominal values for each chopping interval, corresponding to the welding current form, for comparison with each actual current value determined in each chopping interval.
    Type: Grant
    Filed: March 3, 1992
    Date of Patent: February 6, 1996
    Assignee: Elpatronic AG
    Inventors: Hubert Schuermann, Werner Sutter, Markus Weber