Patents by Inventor Carl E. Sprague

Carl E. Sprague 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: 5967585
    Abstract: A retrofittable kick panel to be installed over the insulation of the inner walls under the dashboard of an automobile to form a suitable acoustic chamber for audio speakers. It includes a plate like base member having a raised portion with a central opening therethrough which opening is surrounded by a mounting rim for mounting of a audio speaker. Adjacent to the raised portion are a plurality of louvers to providing fresh air access to the passenger seats and the floor location of the automobile. In use, the base member is installed over the side wall insulation and fresh air duct under the dashboard of an automobile, forming an acoustic chamber which will receive the audio speaker. Wiring is routed to the chamber from one audio channel of the radio or other audio equipment and to an audio speaker which is then mounted on the annular rim after the removal of any felt installation material that would interfere with the speaker's magnet.
    Type: Grant
    Filed: May 6, 1998
    Date of Patent: October 19, 1999
    Assignee: Custom Autosound Mfg., Inc.
    Inventor: Carl E. Sprague
  • Patent number: D294258
    Type: Grant
    Filed: September 26, 1985
    Date of Patent: February 16, 1988
    Inventor: Carl E. Sprague
  • Patent number: D294259
    Type: Grant
    Filed: September 26, 1985
    Date of Patent: February 16, 1988
    Inventor: Carl E. Sprague
  • Patent number: D294353
    Type: Grant
    Filed: September 26, 1985
    Date of Patent: February 23, 1988
    Inventor: Carl E. Sprague
  • Patent number: D414152
    Type: Grant
    Filed: April 1, 1998
    Date of Patent: September 21, 1999
    Assignee: Custom Autosound Mfg., Inc.
    Inventor: Carl E. Sprague
  • Patent number: D726614
    Type: Grant
    Filed: December 24, 2012
    Date of Patent: April 14, 2015
    Assignee: Custom Autosound Manufacturing, Inc.
    Inventor: Carl E. Sprague