Patents by Inventor Andrew J. Carlstrom

Andrew J. Carlstrom 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).

  • Hamstring stretching device and method
    Patent number: 5634873
    Abstract: An exercise and stretching device has a line and a combination comprising a support positioned relative to the line to redirect the line from a first direction to a second direction. The line has a first location on one side of the support to secure a first human appendage and a second location on an other side of the support for manipulation by a different human appendage. A grip is positioned relative to the support to hold the line at a selected position relative to the support.
    Type: Grant
    Filed: September 8, 1994
    Date of Patent: June 3, 1997
    Assignee: Strong River Corporation
    Inventor: Andrew J. Carlstrom