Patents by Inventor Erwin Spotz

Erwin Spotz 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).

  • Patent number: 4337219
    Abstract: A method of producing encapsulated coils includes positioning a coil of wire on a inner coil adjacent one end thereof, positioning a metallic ring on the opposite end of the coil and surrounding the coil with an outer mold having a closed bottom, a resinous material is introduced to encapsulate the coil and provide a reservoir of excess resinous material which is then cured and the shrinkage is accommodated by the excess material above the ring. The encapsulated coil, ring, and excess material are removed from the molds and the ring and excess material are separated using a hammer to produce a finished encapsulated coil.
    Type: Grant
    Filed: December 9, 1980
    Date of Patent: June 29, 1982
    Assignee: Square D Company
    Inventors: Paul P. Falkowski, Erwin Spotz, Mangesh Rajadhyaksha