Patents by Inventor John Caleb Lystrup

John Caleb Lystrup 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: 10925381
    Abstract: A hammock shell system may comprise a hammock, a tension line, and a shell. The tension line may be secured to run above the hammock, and along the length of the hammock. The shell may be a tubular piece of fabric with openings at either end, and shaped to generally hang over the tension line, and fit around and envelop the hammock. The shell may drape over the edges of the two sides of the hammock and hang under the bottom of the hammock. When the two openings at the ends of the shell are closed, a layer of dead air is created between the shell and the bottom of the hammock. This dead air space insulates the bottom of the hammock. A shape adjustment system, comprising cinch cords on the inside of the shell, allows for tightening or loosening to adjust the shape and volume of the dead air space trapped between the bottom of the hammock and the shell. Such shape adjustment allows for customizing insulation properties and the temperature of the hammock. The shell may also include insulating materials.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: February 23, 2021
    Inventors: John Caleb Lystrup, Casey Owen Messick, Mary Alice Hunter
  • Publication number: 20180303229
    Abstract: A hammock shell system may comprise a hammock, a tension line, and a shell. The tension line may be secured to run above the hammock, and along the length of the hammock. The shell may be a tubular piece of fabric with openings at either end, and shaped to generally hang over the tension line, and fit around and envelop the hammock. The shell may drape over the edges of the two sides of the hammock and hang under the bottom of the hammock. When the two openings at the ends of the shell are closed, a layer of dead air is created between the shell and the bottom of the hammock. This dead air space insulates the bottom of the hammock. A shape adjustment system, comprising cinch cords on the inside of the shell, allows for tightening or loosening to adjust the shape and volume of the dead air space trapped between the bottom of the hammock and the shell. Such shape adjustment allows for customizing insulation properties and the temperature of the hammock. The shell may also include insulating materials.
    Type: Application
    Filed: April 19, 2018
    Publication date: October 25, 2018
    Inventors: John Caleb Lystrup, Casey Owen Messick, Mary Alice Hunter