Patents by Inventor David K. Yamamoto

David K. Yamamoto 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: 8137045
    Abstract: A bin tunnel having collapsible sides is used with a truck box of a truck to load content into the truck box from a bin that is sized to fit within the bin tunnel when the bin tunnel is in an open position. When the bin tunnel is in a closed position a footprint of the bin tunnel is very small compared to the open position because the sides are retracted. The footprints can be less when the bin tunnel is in the closed position from thirty (30) percent of the footprint of the bin tunnel in the open position. When the bin tunnel is closed, the contents of the truck box are secure as the space inside of the closed bin tunnel is too small to allow access to the interior.
    Type: Grant
    Filed: August 17, 2008
    Date of Patent: March 20, 2012
    Assignee: Shred-Tech Corporation
    Inventors: Joseph F. Roberto, David K. Yamamoto, Ian R. Pollock
  • Patent number: 7891592
    Abstract: A mobile shredder has a shredder mounted in a truck box in combination with a vibratory hopper. The vibratory hopper is open on one side and opens into a fixed hopper. The fixed hopper is mounted on the shredder and is shaped to direct material to be shredded into the shredder. The vibratory hopper and the fixed hopper are located immediately adjacent to one another, but slightly apart from one another, so that vibration of the vibratory hopper does not cause vibration of the fixed hopper.
    Type: Grant
    Filed: March 27, 2009
    Date of Patent: February 22, 2011
    Assignee: Shred-Tech Corporation
    Inventors: David K. Yamamoto, James A. Leitch
  • Publication number: 20100243778
    Abstract: A mobile shredder has a shredder mounted in a truck box in combination with a vibratory hopper. The vibratory hopper is open on one side and opens into a fixed hopper. The fixed hopper is mounted on the shredder and is shaped to direct material to be shredded into the shredder. The vibratory hopper and the fixed hopper are located immediately adjacent to one another, but slightly apart from one another, so that vibration of the vibratory hopper does not cause vibration of the fixed hopper.
    Type: Application
    Filed: March 27, 2009
    Publication date: September 30, 2010
    Inventors: DAVID K YAMAMOTO, JAMES A. LEITCH
  • Publication number: 20090045644
    Abstract: A truck box of a tuck has a bin tunnel with collapsible sides to load content into the truck box from a bin that is sized to fit within the bin tunnel when the bin tunnel is in an open position. When the bin tunnel is in a closed position, a footprint of the bin tunnel is very small compared to a footprint of the bin tunnel in the open position because the sides are retracted.
    Type: Application
    Filed: August 17, 2008
    Publication date: February 19, 2009
    Inventors: ROBERT K. GLASS, David K. Yamamoto, Ian R. Pollock
  • Publication number: 20090045643
    Abstract: A bin tunnel having collapsible sides is used with a truck box of a truck to load content into the truck box from a bin that is sized to fit within the bin tunnel when the bin tunnel is in an open position. When the bin tunnel is in a closed position a footprint of the bin tunnel is very small compared to the open position because the sides are retracted. The footprints can be less when the bin tunnel is in the closed position from thirty (30) percent of the footprint of the bin tunnel in the open position. When the bin tunnel is closed, the contents of the truck box are secure as the space inside of the closed bin tunnel is too small to allow access to the interior.
    Type: Application
    Filed: August 17, 2008
    Publication date: February 19, 2009
    Inventors: JOSEPH F. ROBERTO, David K. Yamamoto, Ian R. Pollock
  • Patent number: 5535945
    Abstract: Process and system for reclaiming polymeric fibers (e.g., nylon) from post-consumer carpeting includes shredding the post-consumer carpeting into strips, dismantling the carpet strips to form a mixture of the fibers to be reclaimed and the backing material to be discarded, and then separating a substantial portion of the fibers from the backing material. Preferably, the carpet strips are dismantled by impacting the strips of carpeting against an anvil structure with hammer elements using, e.g., a hammermill. A secondary reclamation system is provided whereby the separated backing material which may contain some fibers bound thereto is subjected to secondary dismantling and separation operations. The fractions obtained from the primary and secondary separation operations containing predominantly the polymeric fibers may thus be combined so as to form a process discharge stream which can be pelletized and/or baled as desired.
    Type: Grant
    Filed: February 27, 1995
    Date of Patent: July 16, 1996
    Assignees: BASF Corportion, Shred-Tech Limited
    Inventors: Randall A. Sferrazza, Alan C. Handermann, Cecil H. Atwell, David K. Yamamoto
  • Patent number: 5516050
    Abstract: Rows of finger blocks are mounted to a frame body of a rotary industrial shredder laterally parallel to respective ones of the counter-rotational pair of shafts so as to be moveable slightly, but meaningfully, during the shredding operation while maintaining tight clearance relationships between the fingers and cutters. In such a manner, waste material, particularly waste fibrous material such as waste carpet, may be stripped satisfactorily from the cutter and spacer discs carried by the shafts. Preferably, the finger blocks include unitary cutter and spacer fingers extending inwardly towards the shafts in respective opposed relationship to cutter and spacer discs carried thereby.
    Type: Grant
    Filed: February 27, 1995
    Date of Patent: May 14, 1996
    Assignee: BASF Corporation
    Inventors: David K. Yamamoto, Peter Viveen