For Hollow Workpiece Patents (Class 29/81.02)
  • Patent number: 11723328
    Abstract: A hydroponic tower cleaning and debris removal system is provided that is configured to automatically clean and remove plant and material debris from within a hinged, hydroponic tower as well as the plant containers contained within such a hydroponic tower. The hydroponic tower cleaning system utilizes a drive system to force the tower through the apparatus; an alignment system to ensure that the tower remains in proper alignment throughout the cleaning process; a brush system that initiates separation of plant debris from the tower/plant containers and ensures that the plant roots are torn apart; a plunger system to eject plant debris from within the plant containers; an air delivery system to blow away the debris; and rollers to maintain tower face alignment during the cleaning process.
    Type: Grant
    Filed: May 8, 2019
    Date of Patent: August 15, 2023
    Assignee: MJNN LLC
    Inventors: Matthew Matera, Brice Klein, Tamara Hasoon, Merritt Jenkins, Andrew Dubel, Michael Peter Flynn
  • Patent number: 10662713
    Abstract: A water conserving reaming system includes a water storage box, a water pumping pipe communicated with the water storage box, a first lifting platform, a second lifting platform, a reaming mechanism assembly, and a reamer bit connected with a front end of the reaming mechanism assembly. The first lifting platform includes a first base, a lifting frame arranged on an upper portion of the first base and a pipeline joint. An end of the water pumping pipe extends into the water storage box. An other end of the water pumping pipe is communicated with a bottom portion of the first base. A filtering mechanism for performing primary filtering treatment on a water source from the water pumping pipe is arranged inside the first base. The second lifting platform includes a second base and a telescopic column arranged on an upper portion of the second base.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: May 26, 2020
    Inventor: Zhijun Wang
  • Patent number: 9181610
    Abstract: An object of the present invention is to provide air cooling equipment for a heat treatment process for a martensitic stainless steel pipe, which is capable of shortening the time required for the heat treatment process by enhancing the cooling efficiency at the time when the inner surface of steel pipe is air cooled in the heat treatment ent process. Air cooling equipment 100 for a heat treatment process for a martensitic stainless steel pipe P in accordance with the present invention comprises: a conveying device 10 for intermittently conveying the steel pipe P in the direction substantially at right angles to the longitudinal direction of the steel pipe P; and an air cooling device 20 provided with a nozzle 21 for spraying air Bi toward the inner surface of the steel pipe P, the nozzle 21 being arranged along the longitudinal direction of the steel pipe P at a stop position of the steel pipe P intermittently conveyed by the conveying device 10 so as to face to an end of the steel pipe P.
    Type: Grant
    Filed: December 15, 2008
    Date of Patent: November 10, 2015
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Nobuyuki Mori, Akihiro Sakamoto
  • Patent number: 8752256
    Abstract: A method for preparing a surface, previously roughed in a mechanical manner and comprising sharp-edged ridges and recesses, on metal workpieces for applying a thermally sprayed layer. The roughened layer is machined by hammer or percussion brushes with a rapidly rotating hammer or percussion brush having a plurality of resilient percussion wires that are oriented in a radially outward manner, such that the edges of the ridges are broken in order to improve the adhesion of the subsequently applied thermally sprayed layer or are at least curved forming rear sections. The brush rotates at a high rotational speed of approximately 3000-6000 rotations per minute and is displaced laterally with its rotational axis being at a parallel distance that remains constant in relation to the surface of the workpiece such that percussion wires distributed on the periphery of the brush impact with the ends thereof of the surface areas adjacent to the workpiece at an oblique angle that is less than 90° in rapid succession.
    Type: Grant
    Filed: April 20, 2009
    Date of Patent: June 17, 2014
    Assignee: Ford Global Technologies, LLC
    Inventors: Clemens Maria Verpoort, Mark Robert Silk, Spencer James Lindon
  • Patent number: 8656567
    Abstract: A rapper device for cleaning a heat exchange surface in a pressure vessel by transmitting impact energy. The rapper device includes a striker and an impacting device for impacting the striker which has one end contacting the heat exchange surface in the pressure vessel. The striker includes a piston section having a piston rod projecting out of the pressure vessel via a passage opening in line with the impacting device. A piston head is slideable within a piston chamber in line with the passage opening. The piston chamber is operatively connected to a sealing gas supply. The piston head is a separate part with an aperture. The piston rod runs through the aperture, e.g., in a slideable arrangement.
    Type: Grant
    Filed: December 1, 2009
    Date of Patent: February 25, 2014
    Assignee: Shell Oil Company
    Inventors: Alfons Heitmann, Uwe Herwig, Thomas Paul Von Kossak-Glowczewski
  • Patent number: 8621732
    Abstract: A method and a rapper device for cleaning a heat exchange surface in a pressure vessel. The rapper device includes a striker rod which has one end contacting the heat exchange surface in the pressure vessel and one end projecting out of the pressure vessel via a passage opening. The rapper device also includes an impacting device for impacting the projecting end of the striker rod. A section of the striker rod is slideably supported in a pressure chamber adjacent the passage opening. The pressure chamber is connected to a sealing gas supply maintaining the pressure in the pressure chamber at a higher level than the pressure in the pressure vessel. A bellows defines a pressure chamber around at least a section of the striker rod.
    Type: Grant
    Filed: December 1, 2009
    Date of Patent: January 7, 2014
    Assignee: Shell Oil Company
    Inventors: Alfons Heitmann, Thomas Paul Von Kossak-Glowczewski
  • Patent number: 8074332
    Abstract: A method for removing mineral scale from tubing is disclosed. The method may include the steps of making a first longitudinal cut along a length of the tubing, making a second longitudinal cut along a length of tubing, and removing a plurality of sections of tubing, wherein the sections of tubing are defined by the first and second longitudinal cuts.
    Type: Grant
    Filed: July 25, 2007
    Date of Patent: December 13, 2011
    Assignees: M-I Production Chemicals UK Limited, Oilfield Mineral Solutions Limited
    Inventors: Richard W. Keatch, Simon K. Ray
  • Patent number: 6295708
    Abstract: An apparatus and a method are described for dislodging and removing welding slag from the tip of an electric arc welder, particularly a robotically controlled welder. When a torch finishes its welding cycle, it is moved to a designated cleaning point where it is positioned between two positioning blocks. A double lobed cam on the output shaft of a reciprocating air motor turns against a cam follower. The cam causes the cam follower to compress a spring during the lift portion of the cam cycle, and allows the spring to drive the hammer into impact with the tip during the fall portion of the cycle The repeated impact with the tip serves to loosen the slag from the nozzle. The slag then falls and is collected in a basket located beneath the positioning blocks. The motor rotates at a speed of about 200-1000 rpm to move the hammer about {fraction (3/16)}″ for a cleaning cycle of about 5-10 seconds.
    Type: Grant
    Filed: May 16, 2000
    Date of Patent: October 2, 2001
    Inventors: Dennis A. Spaid, James D. Floro, Robin Longenecker