Patents by Inventor Michael A. Kelf

Michael A. Kelf 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: 4015715
    Abstract: A shipping container including a cover and a base wherein the base includes support platform that is supported on its corners by four pneumatic springs. The pneumatic springs are mounted at an angle to provide three-dimensional shock and vibration isolation of the platform. The platform is tuned and is selected to have a predetermined weight to provide vibration isolation for shipped objects having a weight range of from about zero to a predetermined maximum weight. An air accumulator and manifold are employed in cooperation with the pneumatic springs to provide the desired pneumatic spring characteristic such as reduced stiffness and reduced natural frequency.
    Type: Grant
    Filed: January 23, 1974
    Date of Patent: April 5, 1977
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Michael A. Kelf