Patents by Inventor Philipp Leitner

Philipp Leitner 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: 4793151
    Abstract: A machine for making ice cream or other frozen comestible from a liquid. The machine includes an outer housing in which is inserted a removable freezing chamber which can be independently frozen and replaced in the chamber. Internally of the freezing chamber is a compartment in which can be placed a rotary assembly including a plurality of radially extending blades rotatable with the compartment. The blades include slits at their outer edges defining fingers for atomizing, aerating and moving the frozen liquid through the freezing chamber to its outlet. The blades are of a hard, elastic, low friction material with the outer tips of their fingers lying on an outer diameter larger than the inner diameter of the freezing compartment. The blades are then stressed when inserted into the freezing chamber to forceably engage the inner cylindrical surface of the freezing chamber and are twisted like a helix towards the outlet of the freezing chamber.
    Type: Grant
    Filed: April 1, 1987
    Date of Patent: December 27, 1988
    Assignee: Ruben Masel
    Inventors: Ruben Masel, George Valdshtein, Philipp Leitner, Gustavo Kronenberg