Patents Assigned to United Conveyor Corporation
  • Patent number: 11033836
    Abstract: The system for a continuous dewatering recirculating for removing particulate such as coal combustion residue from a water stream. The system includes multiple dewatering and recirculation containers, each having a submerged flight conveyor and lamella settlings plate located therein, at least one dewatering and recirculation container receives ash water stream overflow.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: June 15, 2021
    Assignee: United Conveyor Corporation
    Inventors: Daniel Charhut, Ronald Bugar, Saurabh Rastogi, Kenneth Lauridsen
  • Patent number: 10974175
    Abstract: A clarifier with an improved rake comprising a plurality of arms, wherein each arm of the rake including a series of arcuate blades, which each blade increasing in height and angle relative to the rake arm as radial distance of the blade relative to the center of the rake decreases.
    Type: Grant
    Filed: August 12, 2019
    Date of Patent: April 13, 2021
    Assignee: United Conveyor Corporation
    Inventors: Daniel Charhut, Robert Heywood, Keith Johnson, Saurabh Rastogi
  • Patent number: 10486087
    Abstract: The system for a continuous dewatering recirculating for removing particulate such as coal combustion residue from a water stream. The system includes multiple dewatering and recirculation containers, each having a submerged flight conveyor and lamella settlings plate located therein, at least one dewatering and recirculation container receives ash water stream overflow.
    Type: Grant
    Filed: October 3, 2017
    Date of Patent: November 26, 2019
    Assignee: United Conveyor Corporation
    Inventors: Daniel Charhut, Ronald Bugar, Saurabh Rastogi, Kenneth Lauridsen
  • Patent number: 10245548
    Abstract: An injection lance assembly for creating a higher degree of turbulence and dispersion of a treating agent into a fluid stream.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: April 2, 2019
    Assignee: United Conveyor Corporation
    Inventors: Jon Balbarin, Daniel E. Charhut, Robert Heywood, Robert LeDain, Saurabh Rastogi
  • Patent number: 9776106
    Abstract: The system for a continuous dewatering recirculating for removing particulate such as coal combustion residue from a water stream. The system includes multiple dewatering and recirculation containers, each having a submerged flight conveyor and lamella settlings plate located therein, at least one dewatering and recirculation container receives ash water stream overflow.
    Type: Grant
    Filed: September 8, 2015
    Date of Patent: October 3, 2017
    Assignee: United Conveyor Corporation
    Inventors: Daniel Charhut, Ronald Bugar, Saurabh Rastogi, Kenneth Lauridsen
  • Patent number: 9539535
    Abstract: The system and method for preventing air leakage from the process side to the bearing side of a mill. The system includes a labyrinth seal ring comprising a series of knives defining first and second labyrinth paths from an air inlet to the process side and the bearing side of the system, respectively. The differences in the two paths such as provided by the number of knives used in each path creates a differential pressure drop which biases air from the air inlet to the process side. The labyrinth seal thus provides a reliable and superior method for reducing the potential for particulate in the process side of the mill from damaging the bearing system.
    Type: Grant
    Filed: August 12, 2014
    Date of Patent: January 10, 2017
    Assignee: United Conveyor Corporation
    Inventors: Jon Balbarin, Daniel E. Charhut, Robert Heywood, Robert LeDain, Saurabh Rastogi
  • Publication number: 20140230655
    Abstract: The system and method for preventing air leakage from the process side to the bearing side of a mill. The system includes a labyrinth seal ring comprising a series of knives defining first and second labyrinth paths from an air inlet to the process side and the bearing side of the system, respectively. The differences in the two paths such as provided by the number of knives used in each path creates a differential pressure drop which biases air from the air inlet to the process side. The labyrinth seal thus provides a reliable and superior method for reducing the potential for particulate in the process side of the mill from damaging the bearing system.
    Type: Application
    Filed: February 20, 2013
    Publication date: August 21, 2014
    Applicant: UNITED CONVEYOR CORPORATION
    Inventors: Jon Balbarin, Daniel E. Charhut, Robert Heywood, Robert LeDain, Saurabh Rastogi
  • Patent number: 8801841
    Abstract: The system and method for preventing air leakage from the process side to the bearing side of a mill. The system includes a labyrinth seal ring comprising a series of knives defining first and second labyrinth paths from an air inlet to the process side and the bearing side of the system, respectively. The differences in the two paths such as provided by the number of knives used in each path creates a differential pressure drop which biases air from the air inlet to the process side. The labyrinth seal thus provides a reliable and superior method for reducing the potential for particulate in the process side of the mill from damaging the bearing system.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: August 12, 2014
    Assignee: United Conveyor Corporation
    Inventors: Jon Balbarin, Daniel E. Charhut, Robert Heywood, Robert LeDain, Saurabh Rastogi
  • Patent number: 8561785
    Abstract: The system and method comprising at least one idler wheel for use with a drag chain mechanism. The device for use with the idler wheel has a rotatable shaft for receiving the rotational force of the idler wheel, and transmits that force to a rotation indicator which is external to the enclosed space where the idler wheel is located. The rotation indicator thus provides a reliable method for indicating to an external sensor or operator whether an idler wheel is rotating within acceptable operational parameters.
    Type: Grant
    Filed: January 24, 2012
    Date of Patent: October 22, 2013
    Assignee: United Conveyor Corporation
    Inventor: Ronald J. Bugar
  • Patent number: 7798749
    Abstract: An improved pneumatic particulate conveyance system including a particulate diffuser plate is disclosed. The assembly includes a pipeline with one or more particulate inlets for introducing solid particulates to a prime mover, wherein the pipeline has at least one particulate diffuser plate located within the pipeline. The particulate diffuser plate has a length which runs parallel to the prime mover and occludes at least a portion of a particulate inlet so as to increase the surface area exposed to the conveying air, thus resulting in a more efficient momentum transfer to the particulate. The plate used in the assembly further includes an arcuate trailing edge so as to encourage more particulate falling into the middle (i.e., the higher velocity portion of the profile) of the prime mover.
    Type: Grant
    Filed: August 14, 2008
    Date of Patent: September 21, 2010
    Assignee: United Conveyor Corporation
    Inventors: Daniel E. Charhut, Saurabh Rastogi, Stanley R. Tryba, Robert T. Jones
  • Patent number: 5775237
    Abstract: A dry bottom ash handling system contemplates a plurality of hoppers disposed beneath a solid fuel-fired steam boiler. Each hopper includes angled walls converging at a generally rectangular opening controlled by a grate door. Air inlets are provided at intersections between adjacent angled walls to (1) facilitate combustion of unburned fuel in the storage hopper, and (2) facilitate flow of ash through the hopper opening. Ash flowing through the hopper opening enters a crusher and is then conveyed via a vacuum line to a point of disposal including a mobile tank truck that receives heavier ash particles and allows bypassing of lighter particles to a silo.
    Type: Grant
    Filed: December 30, 1996
    Date of Patent: July 7, 1998
    Assignees: Florida Power Corporation, United Conveyor Corporation
    Inventors: William P. Reilly, John S. Tomaszek
  • Patent number: 5014998
    Abstract: A shaft seal for sealing a rotating shaft relative to a panel or wall of a device from which the shaft extends. The shaft seal has a tubular housing including a packing gland for shaft packings which is floatingly mounted to a wall or panel of the device by an annular diaphragm. A bushing in the bore of the tubular housing causes the tubular housing to move bodily as permitted by the floating mounting when shaft run-out occurs. A connection between the panel and the tubular housing limits rotation thereof resulting from torsional forces derived from shaft rotation. A unitary structure fixed to the shaft for rotation therewith and mounted adjacent an outer end of the tubular housing coacts with an annular thrust washer fixed to said end of the tubular housing to absorb the loads applied to the annular diaphragm and tubular housing acting axially of the shaft.
    Type: Grant
    Filed: March 26, 1990
    Date of Patent: May 14, 1991
    Assignee: United Conveyor Corporation
    Inventor: Kenneth W. Lauridsen
  • Patent number: 4558805
    Abstract: A system for handling fluent solid material includes a material collecting hopper having a bottom provided with several discharge openings, ducts for delivering material from all the discharge openings into a transfer hopper that has one or more bottom outlets. An upright feed conduit with a feed valve is connected to each bottom outlet. If there are two or more bottom outlets at least one may connect to a bypass conduit with a bypass feed valve. A moistening chamber receives liquid at a controlled rate, and material from a feed conduit goes directly into the moistening chamber while material from a bypass conduit does not. Each conduit is provided with a material flow transducer that controls the position of the feed valve in response to the sensed volume of material flowing through the conduit so as to closely control the rate at which material flows from the conduit. Each feed valve or bypass feed valve may be closed so as to load a transport vehicle either with dry material or with moistened material.
    Type: Grant
    Filed: April 13, 1983
    Date of Patent: December 17, 1985
    Assignee: United Conveyor Corporation
    Inventor: Elwood R. Margison
  • Patent number: 4490255
    Abstract: A cylindrical storage tank of large diameter and depth is concentrically surrounded by a settling tank that has a width to internal diameter ratio that provides essentially plug flow. Liquid containing suspended particles capable of separation by settling is introduced into the upper part of a body of liquid in the settling tank at a zero radius of the tank at a controlled rate and flows slowly in both directions around the storage tank to a weir which extends no more than about halfway around the storage tank and is bisected by a 180.degree. radius of the tank. A slurry of particle-laden liquid is drawn from the lower part of the settling tank, and relatively particle-free surface liquid flows over the weir into the storage tank from which it is drained at a controlled rate.
    Type: Grant
    Filed: January 12, 1983
    Date of Patent: December 25, 1984
    Assignee: United Conveyor Corporation
    Inventor: Robert W. Johnson
  • Patent number: 4481831
    Abstract: A pulverulent material flow transducer has a frame that mounts on the exterior of a conduit in a pulverulent material transporting system. A load cell in the frame includes a sealed chamber one side of which is formed by a resilient control diaphragm, and communicating with the chamber are an air inlet pipe for admitting air at a constant pressure to the chamber, an air outlet pipe, and a bleed nozzle the inner end of which is so related to the control diaphragm as to provide an orifice for the bleed nozzle the area of which is varied by movement of the control diaphragm. A sensor member pivoted in a sealed hole in the conduit has a sensing arm to sense the volume of material flowing through the conduit and a force arm which acts through a guided piston rod and piston to move the control diaphragm and thus vary the bleed nozzle orifice in proportion to the volume of material passing through the conduit.
    Type: Grant
    Filed: April 13, 1983
    Date of Patent: November 13, 1984
    Assignee: United Conveyor Corporation
    Inventor: Elwood R. Margison
  • Patent number: 4455111
    Abstract: In a system for moving large quantities of pulverulent material from receiving hoppers, such as those of a fly ash precipitator, into a pressurized air conveyor pipeline, separate auger conveyors move material from a first line of receiving hoppers and from a second line of receiving hoppers downstream into gravity material inlets at opposite ends of an effectively airtight pressure conveyor casing. In the casing auger conveyor flights of opposite hand and substantially smaller than the casing means it toward a central outlet through which it drops into the pressurized air conveyor pipeline. Above the outlet the auger conveyor shaft has radial material agitating rods. The system is cycled to alternately feed material into the pressure conveyor casing at receiving hopper pressure, which is about atmospheric pressure, and out of the pressure conveyor casing at pipeline pressure.
    Type: Grant
    Filed: June 29, 1981
    Date of Patent: June 19, 1984
    Assignee: United Conveyor Corporation
    Inventors: Carroll V. Jackson, Hazelton H. Avery
  • Patent number: 4363571
    Abstract: A system for moving large quantities of pulverulent material from receiving hoppers, such as those of a fly ash precipitator, into a pressurized air conveyor pipeline. Separate auger conveyors move material from a first line of receiving hoppers and from a second line of receiving hoppers into gravity material inlets at opposite ends of an effectively airtight casing of a pressure mechanical conveyor wherein auger conveyor screws of opposite hand move it toward a central outlet through which it drops into the pressurized air conveyor pipeline. The auger conveyors and the pressure conveyor augers operate continuously; and the system is cycled to alternately feed material into the pressure conveyor casing at receiving hopper pressure, which is about atmospheric pressure, and out of the pressure conveyor casing at pipeline pressure. The cycles of two or more pressure conveyors are out of phase with one another so they feed material into the pipeline consecutively to provide level pipeline flow.
    Type: Grant
    Filed: June 10, 1981
    Date of Patent: December 14, 1982
    Assignee: United Conveyor Corporation
    Inventors: Carroll V. Jackson, Blase C. Rau
  • Patent number: 4353674
    Abstract: A drag bucket apparatus for separating pieces of solid material from liquid in a rectangular receiving tank includes driven trolleys that move along the longitudinal tank walls to pull a drag bucket along the tank from a start end to a dump end. If the drag bucket encounters excessive resistance during a pickup run, a pickup level control automatically raises the bucket incrementally to eliminate such excessive resistance; and when the trolleys near the dump end of the tank the bucket is automatically elevated to a discharge level and when the bucket is at the dump end its load of material is automatically dumped onto a material support out of the liquid. The drag bucket is then lowered and returned to the start end for another pickup run which may begin at once, or which may be delayed depending upon the conditions encountered during the last preceding pickup run.
    Type: Grant
    Filed: May 30, 1980
    Date of Patent: October 12, 1982
    Assignee: United Conveyor Corporation
    Inventor: Elwood R. Margison
  • Patent number: 3934475
    Abstract: A capacitance type material level detector for a hopper for particulate solid materials has a support that extends through an opening in a hopper sidewall to carry a detector unit for which it provides a hood. An electrically conductive sensor member of the detector unit is protected from contact with material in the hopper by a dielectric shield, and is sealed in a chamber defined by the shield and a mounting plate. A manually slidable and rotatable paddle hangs alongside the shield where it may be swung in front of the shield to check operativeness of the detector unit; and by moving the paddle rearwardly it may be used to break accumulated material off the face of the shield.
    Type: Grant
    Filed: August 9, 1974
    Date of Patent: January 27, 1976
    Assignee: United Conveyor Corporation
    Inventors: Earl Edward Rodgers, Gerald Allen Mellinger