Patents by Inventor Chad Douglas Grace

Chad Douglas Grace 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).

  • Adapter for connection to an external power source
    Patent number: 6906496
    Abstract: A device for providing an alternative power source for a battery operated device is generally provided with a source module and a transformer, which are electrically coupled to the battery operated device. When necessary, one or more conductor modules are electrically coupled to the battery operated device. A selector on the transformer regulates the amount of voltage provided to the source module. In use, a source module and, if necessary, one or more conductor modules are positioned within a battery operated device. The selector is adjusted to supply the correct voltage for the type and number of batteries required by the battery operated device.
    Type: Grant
    Filed: June 2, 2003
    Date of Patent: June 14, 2005
    Inventor: Chad Douglas Grace