Patents by Inventor Robert E. Eastman

Robert E. Eastman 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).

  • Tree seat apparatus with a seat cushion having a sealed envelope therein
    Publication number: 20030168285
    Abstract: A portable tree seat apparatus includes a frame, an attachment member for cooperating with the frame to attach the frame to a tree, and a seat cushion. The seat cushion is constructed in two or more layers in which one layer includes an air pillow having a hollow envelope with a gas sealed therein. Preferably, the air pillow includes at least two independently sealed chambers. An optional second layer of the seat cushion includes a flexible foam pad.
    Type: Application
    Filed: March 6, 2002
    Publication date: September 11, 2003
    Inventor: Robert E. Eastman