Patents by Inventor Jay C. Engstrom

Jay C. Engstrom 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).

  • Publication number: 20080128204
    Abstract: A portable tree stand for elevating a hunter or observer above the ground is described. The tree stand can be sized such that it can accommodate one or two users. The tree stand includes a frame assembly that can be reconfigured to allow a user or users to face multiple directions. The railings are adjustable to maximize the functionality of the tree stand in each of the multiple directions.
    Type: Application
    Filed: January 26, 2007
    Publication date: June 5, 2008
    Applicant: Ardisam, Inc.
    Inventor: Jay C. Engstrom
  • Publication number: 20040055822
    Abstract: The present invention is directed to a tree climbing apparatus consisting of two movable platforms, each of which is secured to the tree trunk by a flexible strap that has a non-scratching cover that will not harm the bark of the tree. Each of the flexible straps has a construction that includes an elastic stiffener that causes the flexible strap to be self-straightening when one end of the flexible strap is removed from the platform.
    Type: Application
    Filed: September 17, 2003
    Publication date: March 25, 2004
    Inventor: Jay C. Engstrom
  • Patent number: 6622823
    Abstract: A tree climbing apparatus consisting of two movable platforms, each of which is secured to the tree trunk by a flexible strap that has a non-scratching cover that will not harm the bark of the tree. Each of the flexible straps has a construction that includes an elastic stiffener that causes the flexible strap to be self-straightening when one end of the flexible strap is removed from the platform.
    Type: Grant
    Filed: January 9, 2002
    Date of Patent: September 23, 2003
    Assignee: Ardisam, Inc.
    Inventor: Jay C. Engstrom
  • Publication number: 20030127286
    Abstract: The present invention is directed to a tree climbing apparatus consisting of two movable platforms, each of which is secured to the tree trunk by a flexible strap that has a non-scratching cover that will not harm the bark of the tree. Each of the flexible straps has a construction that includes an elastic stiffener that causes the flexible strap to be self-straightening when one end of the flexible strap is removed from the platform.
    Type: Application
    Filed: January 9, 2002
    Publication date: July 10, 2003
    Inventor: Jay C. Engstrom
  • Patent number: 5105910
    Abstract: A tree stand assembly includes a horizontal platform and floor to be supported on a tree trunk by a pair of vertical stabilizing bars and a pair of compression struts running from a front edge portion of the platform to a lower end of each of the stabilizing bars. To fasten this platform to a tree trunk, a link chain is fastened at the top of one of the vertical bars and extends around the tree to the other vertical bar where a pivotally mounted latch hook extends through an appropriate link on the chain. The latch hook is rotated away from the tree trunk by a latch lever to tension the chain and hold the platform in place. A latch plate keeps the latch hook in place. A seat assembly is then mounted on the platform. Shoulder straps are provided on the platform, and the seat assembly can be placed in parallel relationship with respect to the platform floor, and the entire tree stand assembly can be carried as a back pack.
    Type: Grant
    Filed: January 7, 1991
    Date of Patent: April 21, 1992
    Inventor: Jay C. Engstrom