Patents by Inventor Daniel F. Helmich, Jr.

Daniel F. Helmich, Jr. 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).

  • Electrical converter device
    Patent number: 4911649
    Abstract: A plug-in electrical converter device is set forth wherein a removable face containing one of a plurality of various 220 volt connector plugs is selectively securable to a housing containing a plurality of 110 volt outlets with the housing containing a slide connector electrically engageable with a respective strip. Each of the strips accepts one phase of the 220 volt connector plug with a central resilient slide to provide the neutral conductor.
    Type: Grant
    Filed: February 16, 1989
    Date of Patent: March 27, 1990
    Inventor: Daniel F. Helmich, Jr.