Patents by Inventor Dan Chapman

Dan Chapman 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).

  • Hand, wrist and forearm exercising device
    Patent number: 4392649
    Abstract: A hand, wrist and forearm exerciser device comprising a roller assembly adapted to be grasped by either one or both hands of the user for rolling or twisting of the assembly about its own longitudinal axis, clamping members secured to the opposite ends of the roller assembly for securing the device to a suitable support structure, such as a bench press apparatus, and an adjustable tensioning assembly operably connected with the roller assembly for applying a preselected resistance to the twisting of the roller to provide an effective and efficient hand, wrist and forearm exercising operation.
    Type: Grant
    Filed: June 22, 1981
    Date of Patent: July 12, 1983
    Inventor: Dan Chapman
  • Stackable box
    Patent number: D795585
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: August 29, 2017
    Assignee: Boxy LLC
    Inventors: Hannah Serimian, Dan Chapman
  • Stackable box
    Patent number: D802928
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: November 21, 2017
    Assignee: BOXY LLC
    Inventors: Hannah Serimian, Dan Chapman