Patents by Inventor David T. Hamm

David T. Hamm 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).

  • Vacuum cleaner hook assembly
    Patent number: 6290422
    Abstract: A hook assembly for a vacuum cleaner handle which has a base member formed in the handle with a continuously internally walled extension defining an opening into which a continuously externally walled extension of a hook member can be inserted so that portions of the externally walled extension engage portions of the internally walled extension so that loads applied to the hook are transmitted to the handle through those surfaces. A spring normally biases the surfaces together, but can be manually overcome to rotate the hook for easy removal of the cord. A double hook arrangement is also provided to support a vacuum hose and an electrical cord with similar interengaging surfaces to transmit the load.
    Type: Grant
    Filed: August 4, 2000
    Date of Patent: September 18, 2001
    Assignee: Tacony Corporation
    Inventors: David T. Hamm, John F. Kaido
  • Vacuum cleaner hook assembly
    Patent number: 6106182
    Abstract: A hook assembly for a vacuum cleaner handle which has a base member formed in the handle with a continuously internally walled extension defining an opening into which a continuously externally walled extension of a hook member can be inserted so that portions of the externally walled extension engage portions of the internally walled extension so that loads applied to the hook are transmitted to the handle through those surfaces. A spring normally biases the surfaces together, but can be manually overcome to rotate the hook for easy removal of the cord. A double hook arrangement is also provided to support a vacuum hose and an electrical cord with similar interengaging surfaces to transmit the load.
    Type: Grant
    Filed: May 27, 1999
    Date of Patent: August 22, 2000
    Assignee: Tacony Corporation
    Inventors: David T. Hamm, John F. Kaido
  • Vacuum cleaner handle
    Patent number: D443121
    Type: Grant
    Filed: June 9, 1999
    Date of Patent: May 29, 2001
    Assignee: Tacony Corporation
    Inventors: David T. Hamm, John F. Kaido
  • Brush roll for a vacuum cleaner
    Patent number: D518258
    Type: Grant
    Filed: July 9, 2004
    Date of Patent: March 28, 2006
    Assignee: Tacony Corporation
    Inventors: David T. Hamm, Douglas L. Blocker
  • 3D glasses
    Patent number: D603445
    Type: Grant
    Filed: March 13, 2009
    Date of Patent: November 3, 2009
    Assignee: X6D Limited
    Inventors: Richard A. Carlow, Eugenia J. Chen, Michael J. Chen, Craig Steele, Ashley Tilling, Roozbeh Mousavi, David T. Hamm
  • 3D glasses
    Patent number: D613328
    Type: Grant
    Filed: May 13, 2009
    Date of Patent: April 6, 2010
    Assignee: X6D Ltd.
    Inventors: Richard A. Carlow, Eugenia J. Chen, Michael J. Chen, Craig Steele, Ashley Tilling, Roozbeh Mousavi, David T. Hamm
  • 3D glasses
    Patent number: D616486
    Type: Grant
    Filed: October 27, 2009
    Date of Patent: May 25, 2010
    Assignee: X6D Ltd.
    Inventors: Richard A. Carlow, Eugenia J. Chen, Michael J. Chen, Craig Steel, Ashley Tilling, Roozbeh Mousavi, David T. Hamm
  • 3D glasses
    Patent number: D650003
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: December 6, 2011
    Assignee: X6D Limited
    Inventors: Richard A. Carlow, Eugenia J. Chen, Michael J. Chen, Craig Steel, Ashley Tilling, Roozbeh Mousavi, David T. Hamm
  • 3D glasses
    Patent number: D652860
    Type: Grant
    Filed: August 19, 2009
    Date of Patent: January 24, 2012
    Assignee: X6D Limited
    Inventors: Richard A. Carlow, Eugenia J. Chen, Michael J. Chen, Craig Steele, Ashley Tilling, Roozbeh Mousavi, David T. Hamm
  • Vacuum cleaner
    Patent number: D431332
    Type: Grant
    Filed: May 27, 1999
    Date of Patent: September 26, 2000
    Assignee: Tacony Corporation
    Inventors: David T. Hamm, John F. Kaido
  • Vacuum cleaner
    Patent number: D432282
    Type: Grant
    Filed: May 27, 1999
    Date of Patent: October 17, 2000
    Assignee: Tacony Corporation
    Inventors: David T. Hamm, John F. Kaido
  • 3D glasses
    Patent number: RE45394
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: March 3, 2015
    Assignee: X6D Limited
    Inventors: Richard A. Carlow, Eugenia J. Chen, Michael J. Chen, Craig Steel, Ashley Tilling, Roozbeh Mousavi, David T. Hamm