Patents by Inventor Ralph E. Bradley

Ralph E. Bradley 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).

  • Wedging tree stand
    Patent number: 5016733
    Abstract: A sit and climb tree stand uses a wedging tree engagement bar to provide for positive support in the tree with minimal tree damage. A self-locking leveling feature is provided which allows the user to adjust the level when at the desired elevation.
    Type: Grant
    Filed: March 2, 1990
    Date of Patent: May 21, 1991
    Inventor: Ralph E. Bradley
  • Collapsible and adjustable tree stand
    Patent number: 4997063
    Abstract: A tree stand having a weight bearing platform and a gripping frame hingedly joined thereto utilizes a pair of variable length suspension braces connecting the outer end of the platform to the gripping frame. By varying the length of the braces the platform is leveled while positioned on the tree. The hinged construction also allows for easy folding of the stand for storage and transportation.
    Type: Grant
    Filed: April 26, 1990
    Date of Patent: March 5, 1991
    Inventor: Ralph E. Bradley
  • Wedging tree stand
    Patent number: 4942942
    Abstract: A sit and climb tree stand uses a wedging tree engagement bar to provide for positive support in the tree with minimal tree damage. A self-locking leveling feature is provided which allows the user to adjust the level when at the desired elevation.
    Type: Grant
    Filed: December 12, 1988
    Date of Patent: July 24, 1990
    Inventor: Ralph E. Bradley