Patents by Inventor Rolf Pieper

Rolf Pieper 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).

  • Coil form for electric windings
    Patent number: 4429294
    Abstract: A coil form for a transformer having air-cooled electric windings. Plug-in frames which can be adjusted in width and/or height are provided at the ends of the device. Profiled bars and additional supporting members, both of which can be of any desired length, are mounted between the frames at each corner thereof and are laterally spaced so as to space the coil windings wrapped therearound.
    Type: Grant
    Filed: March 23, 1981
    Date of Patent: January 31, 1984
    Assignee: Firma W. Meffert KG.
    Inventors: Harald Meffert, Rolf Pieper