Patents Assigned to Gray Tek, Inc.
  • Patent number: 7725963
    Abstract: A material mover includes substantially rectangular top and bottom sheets connected to perimeter sidewalls defining at least one chamber. The bottom sheet is perforated with orifices at least in a central portion and has a greater width than that of the top sheet at least in middle and lower regions of the top and bottom sheets. A plurality of partition members connect at least portions of the top and bottom sheets to one another within the chamber, extend parallel to lateral edges of the top and bottom sheets, and are spaced from the perimeter sidewalls. A fluid weir is defined along an outer periphery of the bottom sheet to provide a fluid film reservoir at least under the central portion of the bottom sheet including the orifices. Fluid in the fluid reservoir is substantially contained by the fluid weir.
    Type: Grant
    Filed: May 11, 2005
    Date of Patent: June 1, 2010
    Assignee: Gray Tek, Inc.
    Inventor: Raynor A. Johnson
  • Publication number: 20050283905
    Abstract: A material mover includes substantially rectangular top and bottom sheets connected to perimeter sidewalls defining at least one chamber. The bottom sheet is perforated with orifices at least in a central portion and has a greater width than that of the top sheet at least in middle and lower regions of the top and bottom sheets. A plurality of partition members connect at least portions of the top and bottom sheets to one another within the chamber, extend parallel to lateral edges of the top and bottom sheets, and are spaced from the perimeter sidewalls. A fluid weir is defined along an outer periphery of the bottom sheet to provide a fluid film reservoir at least under the central portion of the bottom sheet including the orifices. Fluid in the fluid reservoir is substantially contained by the fluid weir.
    Type: Application
    Filed: May 11, 2005
    Publication date: December 29, 2005
    Applicant: Gray Tek, Inc.
    Inventor: Raynor Johnson
  • Publication number: 20050076437
    Abstract: A material mover includes substantially rectangular top and bottom sheets connected to perimeter side walls. The width of the bottom sheet which is perforated with orifices at least in a central portion, is greater than the width of the top sheet at least in middle and lower regions of the top and bottom sheets. A plurality of partition members connect at least portions of the top and bottom sheets to one another, and extend parallel with lateral edges of the top and bottom sheets and are spaced in from the perimeter side walls. A fluid weir is defined at an outer periphery of the bottom sheet to provide a fluid film reservoir under at least the central portion of the bottom sheet having the plurality of orifices formed therein. The dispersion of the fluid from underneath the material mover is inhibited by the fluid weir.
    Type: Application
    Filed: August 26, 2004
    Publication date: April 14, 2005
    Applicant: Gray Tek, Inc.
    Inventor: Raynor Johnson