Patents by Inventor Joseph Tehrani

Joseph Tehrani 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).

  • Perforator/crusher for plastic bottles
    Patent number: 4987829
    Abstract: A densification apparatus for use in recycling plastic containers utilizes a hopper with a movable lid to feed collected plastic containers to a continuous chain conveyor having a plurality of wedge-shape teeth which perforate the containers and urge them between a set of compression plates and rollers such that the plastics are compressed beyond their ability to resume their original shape. The vertical conveyor and hopper-closing lid prevent ballistic rejection of containers and enable iterative processing of plastic in a movable or stationary curbside apparatus.
    Type: Grant
    Filed: September 29, 1989
    Date of Patent: January 29, 1991
    Assignee: Lummus Development Corp.
    Inventors: Wilbur G. Hudson, Ronald F. Schley, Joseph Tehrani