Patents by Inventor Robert A. Warden

Robert A. Warden 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).

  • Tone arm assembly with interchangeable tone arm tube
    Patent number: 6661767
    Abstract: A tone arm assembly with an interchangeable tone arm tubes includes a fixed base. A support bracket is connected to the fixed base and rotatable thereon. A tone arm housing is mounted in the support bracket and rotatable therein. A separate straight tone arm tube and an S-shaped tone arm tube both have a connector at one end that is engageable with a connector on the tone arm base. The other ends of the tone arm tubes have another connector for removably attaching a cartridge thereto. The straight tone arm tube and the S-shaped tone arm tube are interchangeably connected to the tone arm housing via the respective connectors. Depending on the desired performance, on the same tone arm base, either the straight tone arm tube can be used for improved anti-skip performance or the S-shaped tone arm tube may be used for improved sound quality.
    Type: Grant
    Filed: February 11, 2003
    Date of Patent: December 9, 2003
    Assignee: Numark Industries, LLC
    Inventor: Robert A. Warden
  • TONE ARM ASSEMBLY WITH INTERCHANGEABLE TONE ARM TUBE
    Publication number: 20030156527
    Abstract: A tone arm assembly with an interchangeable tone arm tubes includes a fixed base. A support bracket is connected to the fixed base and rotatable thereon. A tone arm housing is mounted in the support bracket and rotatable therein. A separate straight tone arm tube and an S-shaped tone arm tube both have a connector at one end that is engageable with a connector on the tone arm base. The other ends of the tone arm tubes have another connector for removably attaching a cartridge thereto. The straight tone arm tube and the S-shaped tone arm tube are interchangeably connected to the tone arm housing via the respective connectors. Depending on the desired performance, on the same tone arm base, either the straight tone arm tube can be used for improved anti-skip performance or the S-shaped tone arm tube may be used for improved sound quality.
    Type: Application
    Filed: February 11, 2003
    Publication date: August 21, 2003
    Inventor: Robert A. Warden
  • Loudspeaker
    Patent number: D537070
    Type: Grant
    Filed: December 23, 2005
    Date of Patent: February 20, 2007
    Assignee: Bose Corporation
    Inventor: Robert A. Warden
  • Power amplifier
    Patent number: D549213
    Type: Grant
    Filed: August 22, 2005
    Date of Patent: August 21, 2007
    Assignee: Bose Corporation
    Inventor: Robert A. Warden
  • Line array loudspeaker design
    Patent number: D562307
    Type: Grant
    Filed: December 12, 2006
    Date of Patent: February 19, 2008
    Assignee: Bose Corporation
    Inventor: Robert A. Warden
  • Disc jockey turntable
    Patent number: D491915
    Type: Grant
    Filed: February 6, 2003
    Date of Patent: June 22, 2004
    Assignee: Numark Industries, LLC a Rhode Island corporation
    Inventor: Robert A. Warden
  • Tone arm assembly
    Patent number: D494158
    Type: Grant
    Filed: February 6, 2003
    Date of Patent: August 10, 2004
    Assignee: Numark Industries, LLC
    Inventor: Robert A. Warden
  • Dual configuration speaker
    Patent number: D596157
    Type: Grant
    Filed: November 17, 2008
    Date of Patent: July 14, 2009
    Assignee: Bose Corporation
    Inventors: Robert A. Warden, Stuart Raymond Jang