Patents by Inventor Hans J. Jehl

Hans J. Jehl 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).

  • Electro-dynamic transducer
    Patent number: 4602512
    Abstract: An electro-dynamic transducer head (107) coming into contact with a workpiece (14) comprises a protective cap (28, 38), which is at least partially surrounded by a sliding protection element (22). The sliding protective element has a basic member (24) with sections (26), which are introduced into recesses (28) by deposit welding.
    Type: Grant
    Filed: April 12, 1985
    Date of Patent: July 29, 1986
    Assignee: Nukem GmbH
    Inventors: Ewald Kowol, Dieter Zwanzig, Hans J. Jehl