Patents by Inventor J. Douglas PRENTICE

J. Douglas PRENTICE 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: 9427616
    Abstract: The invention consists of a flexible hexagonal array composed of rigid plastic rings, sized and shaped for convenient gripping with the hands, and or pinning against floor or wall by other body parts (feet, knees, elbows, trunk, bead, etc.) each connected to 3 to 6 lengths of bungee, or equivalent elastic material, located at 60 degree intervals around the ring circumference. The array is sized for convenient use for exercise purposes, and is light enough to be readily portable, and, by virtue of its uniform stretch resistance properties, which vary with the number of strands being stretched, and the distance between gripping and/or pinning points, which controls the length of bungee being stretched, gives the opportunity of exercising all of the skeletal muscles, at a variety of resistance levels.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: August 30, 2016
    Inventors: Daniel D. Natee, J. Douglas Prentice
  • Publication number: 20150024910
    Abstract: The invention consists of a flexible hexagonal array composed of rigid plastic rings, sized and shaped for convenient gripping with the hands, and or pinning against floor or wall by other body parts (feet, knees, elbows, trunk, bead, etc.) each connected to 3 to 6 lengths of bungee, or equivalent elastic material, located at 60 degree intervals around the ring circumference. The array is sized for convenient use for exercise purposes, and is light enough to be readily portable, and, by virtue of its uniform stretch resistance properties, which vary with the number of strands being stretched, and the distance between gripping and/or pinning points, which controls the length of bungee being stretched, gives the opportunity of exercising all of the skeletal muscles, at a variety of resistance levels.
    Type: Application
    Filed: March 12, 2013
    Publication date: January 22, 2015
    Inventors: Daniel D. NATEE, J. Douglas PRENTICE