Patents by Inventor Walter Schade

Walter Schade 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).

  • Controllable electrical single-armature of rotary converter
    Patent number: 4238822
    Abstract: Controllable electric rotary converter includes a drum armature winding having a plurality of partial coils, a multiplicity of electric switches consecutively connectible by a single pole with one of the input and output sides of the direct-current side of the drum armature winding for transmitting a current therethrough, a plurality of induction coils connectible with the electric switches and energizable by the current.
    Type: Grant
    Filed: March 2, 1978
    Date of Patent: December 9, 1980
    Inventor: Walter Schade
  • Brushless direct current machine and method of controlling the same
    Patent number: 4035699
    Abstract: In a brushless D. C. motor which is controlled by electronic circuits, the armature which is of the shorted drum type, is constructed in the form of a double or multiple coil winding which acts to prevent high circuit interruption potential which might damage the electronic control circuits. The double or multiple winding may be constructed as a double or multiple conductor winding. The multiple windings are separate one from the other and are connected together to supply terminals through the electronic control circuits.
    Type: Grant
    Filed: January 22, 1974
    Date of Patent: July 12, 1977
    Inventor: Walter Schade