Patents by Inventor David Wayne Hall

David Wayne Hall 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).

  • Trampoline having substantially similar mat deflection under varying loads
    Patent number: 7422547
    Abstract: A novel trampoline at least includes: a trampoline frame; a trampoline mat operatively surrounded by the trampoline frame; and a plurality of trampoline spring members operatively coupled between the trampoline frame and the trampoline mat. Each trampoline spring member at least includes: a first spring coupler located at a first end of the spring member; a second spring coupler located at a second end of the spring member; a first spring member section coupled to the first spring coupler; a second spring member section coupled to the second spring coupler; at least a third spring member section coupled between the first spring member section and the second spring member section, the third spring member section having a spring constant greater than the spring constants of the first and second spring member sections.
    Type: Grant
    Filed: January 7, 2008
    Date of Patent: September 9, 2008
    Inventor: David Wayne Hall
  • Trampoline having substantially similar mat deflection under varying loads
    Patent number: 7331904
    Abstract: A novel trampoline at least includes: a trampoline frame; a trampoline mat operatively surrounded by the trampoline frame; and a plurality of trampoline spring members operatively coupled between the trampoline frame and the trampoline mat. Each trampoline spring member at least includes: a first spring coupler located at a first end of the spring member; a second spring coupler located at a second end of the spring member; a first spring member section coupled to the first spring coupler; a second spring member section coupled to the second spring coupler; at least a third spring member section coupled between the first spring member section and the second spring member section, the third spring member section having a spring constant greater than the spring constants of the first and second spring member sections.
    Type: Grant
    Filed: April 28, 2005
    Date of Patent: February 19, 2008
    Inventor: David Wayne Hall
  • Exercise and rehabilitative apparatus
    Patent number: 5947870
    Abstract: An exercise and rehabilitation apparatus for skiers and athletes who need to maintain good endurance, balance, coordination, and strength in their legs is disclosed which allows for movement both horizontally and vertically while jumping side to side without jarring the back, knees, tendons, and joints, etc. The apparatus is composed of two or more rebounding bodies wherein the angle of inclination with respect to the base may be adjusted.
    Type: Grant
    Filed: March 20, 1998
    Date of Patent: September 7, 1999
    Inventors: David Wayne Hall, Lynn N. Bishop