Patents by Inventor Daniel Zundel

Daniel Zundel 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).

  • Tube-type heat exchanger
    Patent number: 4790371
    Abstract: A tube-type heat exchanger comprises a plurality of tubes (1) all of which are of the same length, wound in the form of concentric cylindrical coils that touch each other, the pitch of the coils being different and the various coils being either wound in the same direction, or wound in alternately opposite directions. Each coil is comprised by one or more tubes bent to the same radius, the number of tubes in each coil increasing as the diameter of the coil.
    Type: Grant
    Filed: July 19, 1983
    Date of Patent: December 13, 1988
    Inventor: Daniel Zundel