Patents by Inventor Bernd R. Hettel

Bernd R. Hettel 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).

  • Supercooled liquid thermal generator and improved triggering device
    Patent number: 5056589
    Abstract: A self-contained manually triggerable thermal energy pack includes a flexible enclosure containing a supercooled solution capable of being triggered to begin crystallization and a triggering structure including a single close turn helical metallic spring having sufficient stiffness to maintain its cylindrical shape and sufficient resiliency to allow bending by the application of manual pressure normal to its axis.
    Type: Grant
    Filed: December 19, 1989
    Date of Patent: October 15, 1991
    Inventors: Bernd R. Hettel, Jay E. Philippbar