Patents by Inventor Alex Pfeiffer

Alex Pfeiffer 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).

  • Method,apparatus and extrusion nozzle for producing a member from extrudable material
    Patent number: 5240663
    Abstract: The method and apparatus for producing members (4) of extrudable material, for example a ceramic or synthetic plastic material, use a nozzle (2) composed of a plurality of segments (21 to 25) abutting without gaps and having extrusion ducts (28), segments (21, 22) of the nozzle being moved relative to one another, for example transversely relative to the direction of extrusion. With this method and apparatus it is possible to produce in a single operation members of which the structures, such as open ducts (40), change their relative positions and cross one another.
    Type: Grant
    Filed: April 22, 1991
    Date of Patent: August 31, 1993
    Assignee: Sulzer Brothers Limited
    Inventors: Jean-Paul Stringaro, Alex Pfeiffer