Patents by Inventor Eric Hutmacher

Eric Hutmacher 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).

  • Solid body electric guitar having the capability of producing acoustic guitar sound
    Patent number: 7151216
    Abstract: The invention is an electric guitar. In detail, the guitar includes a solid body and neck portions. A pressure sensor is mounted at the junction of the body and neck, the pressure sensor having the sensor element in direct contact with the guitar. An electric circuit connects the pressure sensor to an electrical connector mounted on an external surface of the guitar.
    Type: Grant
    Filed: September 28, 2004
    Date of Patent: December 19, 2006
    Inventor: Eric Hutmacher
  • Electro-mechanical tremolo apparatus for an electric guitar
    Patent number: 5631435
    Abstract: In a first embodiment, a columnated light beam is transmitted to a lens aperture of continuously variable size. The lens aperture is coupled to the tremolo arm of a solid body electric guitar. Light from the lens aperture is focussed upon a photosensitive surface of a photo-transistor. The photo-transistor provides a tremolo voltage that is an analog of the position of the tremolo arm. In a second embodiment, a potentiometer has its shaft coupled to the tremolo arm. The wiper arm of the potentiometer provides the tremolo voltage.
    Type: Grant
    Filed: January 18, 1995
    Date of Patent: May 20, 1997
    Inventor: Eric Hutmacher