Patents by Inventor Robert L. Sink

Robert L. Sink 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).

  • Patent number: 4776503
    Abstract: A combination hunting, backpacking and camping accessory that can be used as a hunter's climbing seat, a blind support, a backpack or a portable shelf for camp sites is formed from a pair of interconnected frame components each having first and second sections, a cross brace attached to the first sections and a support member releasably secured to the second sections. A cable or other flexible member is fixed at one end to the cross brace, has a series of stops attached to it along its length and is received in an open notch in the cross brace. When used as a climbing seat the cable is wrapped around a tree with the first sections extending downwardly, but when used as a backpack the accessory is reversed and the cable wrapped around the wearer's waist. When used as a shelf or a blind support the support member may be removed and replaced with extensions slipped over the second sections.
    Type: Grant
    Filed: March 9, 1987
    Date of Patent: October 11, 1988
    Inventor: Robert L. Sink