Patents by Inventor David A. Graston

David A. Graston 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: 11851293
    Abstract: A trapdoor rejection subsystem includes one or more trapdoor rejection mechanisms. Each trapdoor rejection mechanism is configured to be selectively transitioned between a closed position to support parcels and an open position to allow parcels identified as unconveyable to pass through the trapdoor rejection mechanism. Each trapdoor rejection mechanism includes a first door, a second door, and one or more actuators which can be selectively actuated to rotate the first door and the second door and transition the trapdoor rejection mechanism between the closed position and the open position. The trapdoor rejection subsystem can be utilized in a conveyor system in combination with one or more robot singulators, an upstream conveyor, a place conveyor, and a vision and control subsystem. Detection of unconveyable parcels and the transition of each trapdoor rejection mechanism of the trapdoor rejection subsystem is controlled by the vision and control subsystem.
    Type: Grant
    Filed: May 19, 2022
    Date of Patent: December 26, 2023
    Assignee: Material Handling Systems, Inc.
    Inventors: Carl David Graston, Thomas Anthony Hillerich, Jr., Paul Receveur
  • Publication number: 20230271791
    Abstract: A system for transferring parcels made in accordance with the present invention includes: a first conveyor for conveying a bulk flow of parcels; a second conveyor positioned adjacent to the first conveyor; a robot positioned adjacent to the first conveyor and the second conveyor; and a rejection member. The robot engages and transfers select parcels in the bulk flow of parcels on the first conveyor to the second conveyor. The rejection member is positioned as to receive parcels offloaded from the first conveyor and/or the second conveyor and directs such parcels out of the system. Parcels within the bulk flow of parcels with characteristics which make it difficult for one or more of the components of the system or downstream systems to handle or process can be directed to the rejection member by operation of the first conveyor and/or the second conveyor to reduce system processing delays and stoppages.
    Type: Application
    Filed: February 28, 2023
    Publication date: August 31, 2023
    Inventors: Carl David Graston, Madhav Devidas Patil, Paul Receveur, Michael Schindler
  • Publication number: 20220371834
    Abstract: A trapdoor rejection subsystem includes one or more trapdoor rejection mechanisms. Each trapdoor rejection mechanism is configured to be selectively transitioned between a closed position to support parcels and an open position to allow parcels identified as unconveyable to pass through the trapdoor rejection mechanism. Each trapdoor rejection mechanism includes a first door, a second door, and one or more actuators which can be selectively actuated to rotate the first door and the second door and transition the trapdoor rejection mechanism between the closed position and the open position. The trapdoor rejection subsystem can be utilized in a conveyor system in combination with one or more robot singulators, an upstream conveyor, a place conveyor, and a vision and control subsystem. Detection of unconveyable parcels and the transition of each trapdoor rejection mechanism of the trapdoor rejection subsystem is controlled by the vision and control subsystem.
    Type: Application
    Filed: May 19, 2022
    Publication date: November 24, 2022
    Inventors: Carl David Graston, Thomas Anthony Hillerich, JR., Paul Receveur
  • Patent number: 11130634
    Abstract: A rejection chute for a conveyor system, which receives and redirects rejected parcels, includes: a conduit defined by a plurality of side walls; a door; and an actuator operably connected to the door. The conduit includes an enclosed upper portion defining a first opening for receiving parcels into the rejection chute and a lower portion defining a second opening for discharging parcels from the rejection chute. The door is mounted proximate to the first opening and is configured to transition between a first position to cover the first opening and a second position to uncover the first opening. The rejection chute can be integrated into a walking surface alongside of a conveyor to receive and redirect parcels transferred off of the conveyor to a location below the walking surface. An enclosure can be combined with the rejection chute to regulate access and guide parcels into the rejection chute.
    Type: Grant
    Filed: June 26, 2020
    Date of Patent: September 28, 2021
    Assignee: Material Handling Systems, Inc.
    Inventors: Nicholas A. Berg, Carl David Graston, Paul Receveur
  • Patent number: 10926958
    Abstract: In an extendible belt conveyor with a boom mounted for movement with respect to a penultimate section and a cable extending from user controls on the boom to the penultimate section, a cable management system may include a first pulley mounted to an underside of the penultimate section and a second pulley mounted to the underside of the penultimate section, with a distance between the first pulley and the second pulley adjusted to maintain tension in the cable. The cable management system may also include a first shoe mounted to an underside of the boom near the penultimate section and a second shoe mounted to the underside of the penultimate section near the boom. The first shoe defines a channel for receiving the cable and the second shoe defines a channel for receiving the cable, with the cable passing around the first shoe and then around the second shoe.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: February 23, 2021
    Assignee: MHS Equipment, LLC
    Inventors: Joseph Cauthen, Carl David Graston, Paul Receveur
  • Patent number: 10654652
    Abstract: An extendible belt conveyor includes a penultimate section, a boom mounted for pivotal movement with respect to the penultimate section, and a transfer plate spanning between the belt of the boom and the belt of the penultimate section. The transfer plate includes a plurality of first components and a plurality of second components that each include a base member mounted on and rotatable with respect to a rod, and a flange member extending from the base member and positioned adjacent to one of the belts of the boom or penultimate section, with a distal edge of the flange member extending over the belt. As the boom pivots, an upper surface of the plurality of first components remains substantially parallel to the belt of the boom, and an upper surface of the plurality of second components remains substantially parallel to the belt of the penultimate section.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: May 19, 2020
    Assignee: Santa Rosa Systems, LLC
    Inventors: Marion Folickman, Carl David Graston, Paul Receveur
  • Patent number: 6126620
    Abstract: A method and a system for use by a trainer in performing soft tissue massage. The system includes a tool including a handle portion and a skin engagement portion that is configured to generally match the contour of the impaired area of soft tissue to be treated. The tool is connected to a source of electrical current far providing electrical stimulation to the impaired area during treatment with the tool. The skin engagement portion noninvasively engages the skin to allow the user to locate fibrous adhesions that are attached to the underlying soft tissue areas.
    Type: Grant
    Filed: October 17, 1997
    Date of Patent: October 3, 2000
    Assignee: Therapy Care Resources, Inc.
    Inventor: David A. Graston
  • Patent number: 5707346
    Abstract: A method and a system for use by a trainer in performing soft tissue massage. The system includes a tool including a handle portion and a skin engagement portion that is configured to generally match the contour of the impaired area of soft tissue to be treated. The tool is connected to a source of electrical current for providing electrical stimulation to the impaired area during treatment with the tool. The skin engagement portion noninvasively engages the skin to allow the user to locate fibrous adhesions that are attached to the underlying soft tissue areas.
    Type: Grant
    Filed: August 15, 1995
    Date of Patent: January 13, 1998
    Assignee: Grastech, Inc.
    Inventor: David A. Graston
  • Patent number: 5441478
    Abstract: A set of tools for use by a trainer in performing soft tissue massage, wherein each tool includes a handle portion and a skin engagement portion that is configured to generally match the contour of the impaired area of soft tissue to be treated. The skin engagement portion includes an edge surface that noninvasively engages the skin to allow the user to locate fibrous adhesions that are attached to the underlying soft tissue areas. A first tool is selected having a bevelled edge for breaking up the scar tissue, whereafter a second tool may then be selected having a blade edge for pulling the broken up scar tissue away from the affected soft tissue area. The soft tissue area is then stretched as much as possible and the treatment repeated until all of the scar tissue has been removed from the soft tissue area.
    Type: Grant
    Filed: August 31, 1994
    Date of Patent: August 15, 1995
    Assignee: Graston and Hall, L.P.
    Inventor: David A. Graston
  • Patent number: 5366437
    Abstract: A set of tools for use by a trainer in performing soft tissue massage, wherein each tool includes a handle portion and a skin engagement portion that is configured to generally match the contour of the impaired area of soft tissue to be treated. The skin engagement portion includes an edge surface that noninvasively engages the skin to allow the user to locate fibrous adhesions that are attached to the underlying soft tissue areas. A first tool is selected having a bevelled edge for breaking up the scar tissue, whereafter a second tool may then be selected having a blade edge for pulling the broken up scar tissue away from the affected soft tissue area. The soft tissue area is then stretched as much as possible and the treatment repeated until all of the scar tissue has been removed from the soft tissue area.
    Type: Grant
    Filed: June 25, 1993
    Date of Patent: November 22, 1994
    Inventor: David A. Graston
  • Patent number: 5231977
    Abstract: A set of tools for use by a trainer in performing soft tissue massage, wherein each tool includes a handle portion and a skin engagement portion that is configured to generally match the contour of the impaired area of soft tissue to be treated. The skin engagement portion includes an edge surface that noninvasively engages the skin to allow the user to locate fibrous adhesions that are attached to the underlying soft tissue areas. A first tool is selected having a bevelled edge for breaking up the scar tissue, whereafter a second tool may then be selected having a blade edge for pulling the broken up scar tissue away from the affected soft tissue area. The soft tissue area is then stretched as much as possible and the treatment repeated until all of the scar tissue has been removed from the soft tissue area.
    Type: Grant
    Filed: September 11, 1991
    Date of Patent: August 3, 1993
    Inventor: David A. Graston