Patents Assigned to Waste Management of North America, Inc.
  • Patent number: 5330071
    Abstract: A large plastic refuse container including a floor, a front wall, a rear wall, a first end wall, a second end wall and a floor. The plastic refuse container including two attached and opposing side fork pockets to enable the lifting of the container with a fork lift device.
    Type: Grant
    Filed: August 14, 1992
    Date of Patent: July 19, 1994
    Assignee: Waste Management of North America, Inc.
    Inventor: Brian G. Parker
  • Patent number: 5244311
    Abstract: A method of increasing the available capacity of an active above ground and/or incised landfill is disclosed that involves dynamically compacting successive layers of deposited refuse. This method increases the available volume of the landfill up to about 20 percent without damaging the liner system that protects the surrounding soil base and ground water.
    Type: Grant
    Filed: June 4, 1992
    Date of Patent: September 14, 1993
    Assignee: Waste Management of North America, Inc.
    Inventor: Vito N. Galante
  • Patent number: 5203669
    Abstract: An improved garbage truck is disclosed having an inlet opening leading into a tipping section, where a press reciprocally moves in the tipping section, guided along the side walls thereof, to propel garbage through an opening into a removable container. The tipping section has at least one lateral arm or wall reinforcing the side walls of the tipping section and is arranged above the press. A sensing element is arranged in the tipping section with generates a signal when there is a jam or when there are tilted or bulky objects, the signal stops the travel of the press or reverses the direction of the press to prevent damage to the garbage truck.
    Type: Grant
    Filed: September 1, 1992
    Date of Patent: April 20, 1993
    Assignee: Waste Management of North America, Inc.
    Inventors: Johannes Klossek, Johannes Kirchhoff
  • Patent number: 5006030
    Abstract: The apparatus of this invention transfers refuse from a container into an opening at the rear end of a hopper in refuse equipment. The apparatus includes first arms pivotable to swing the lower end of the container upwardly. A member cooperates with the first arms to fixedly retain a pin on the container when the first arms have pivoted through a first particular angle. Second arms are then pivoted through a second particular angle to raise the bottom of the container above the lid of the container, while the pin on the container is held at a fixed vertical position, for providing for the transfer of the refuse from the container into the hopper. During such movement, members are moved to effectively raise the lip of the hopper upwardly and to dispose a surface for guiding the transfer of the refuse from the container into the hopper. Members are also provided for gripping the bottom of the container during the pivotal movement of the container upwardly by the second arms.
    Type: Grant
    Filed: March 15, 1989
    Date of Patent: April 9, 1991
    Assignee: Waste Management of North America, Inc.
    Inventors: Fred T. Smith, Fred P. Smith
  • Patent number: 4960355
    Abstract: An inverter apparatus of the type which may be used on a truck or other vehicle for inverting containers such as refuse containers for dumping their contents into a chamber within the vehicle. The apparatus uses a pair of cylinders having retractable rods which act through torque members to sequentially rotate a pair of pin carrier arms and inverter bars to invert a container having a pair of laterally extending pins. During rotation of the inverter bars the pins are always locked between the pin carrier arms and guide brackets attached to the truck body. The present invention provides a unique container and inverting apparatus interlock feature which is in effect at all times that the container is more than a few inches above the ground, thus rendering it virtually impossible during the inverting process to inadvertently drop or swing the container.
    Type: Grant
    Filed: January 17, 1989
    Date of Patent: October 2, 1990
    Assignee: Waste Management of North America, Inc.
    Inventor: Stanley W. Worthington