Patents by Inventor Carl J. White

Carl J. White 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: 4519490
    Abstract: Method and apparatus for minimizing the running clearance gap between stationary skirt panels and moving steps or segments of a passenger conveyor such as an escalator or moving walk, and simultaneously providing lateral guidance for the moving conveyor steps or segments, to thus reduce wear, noise, and vibration, wherein the skirt panels serve as guides for low friction, abrasion-resistant, resilient plastic bearing plates disposed on each side of the passenger conveyor steps or segments. In a second embodiment, which may be used with or without step bearing plates, raised curb members, which are attached to both sides of escalator step treads to minimize the gap between the moving escalator steps and adjacent stationary skirt panels, are shaped so that when an escalator passenger steps upon this curb member, it is firmly pressed against the adjacent skirt panel.
    Type: Grant
    Filed: June 24, 1983
    Date of Patent: May 28, 1985
    Inventor: Carl J. White
  • Patent number: 4413719
    Abstract: Method and apparatus for minimizing the running clearance gap between stationary skirt panels and moving steps or segments of a passenger conveyor such as an escalator or moving walk, and simultaneously providing lateral guidance for the moving conveyor steps or segments, to thus reduce wear, noise, and vibration, wherein the skirt panels serve as guides for low friction, abrasion-resistant, resilient plastic bearing plates disposed on each side of the passenger conveyor steps or segments. In a second embodiment, which may be used with or without step bearing plates, raised curb members, which are attached to both sides of escalator step treads to minimize the gap between the moving escalator steps and adjacent stationary skirt panels, are shaped so that when an escalator passenger steps upon this curb member, it is firmly pressed against the adjacent skirt panel.
    Type: Grant
    Filed: May 28, 1981
    Date of Patent: November 8, 1983
    Inventor: Carl J. White