Patents Assigned to Purple & Green Research, Inc.
  • Patent number: 6220781
    Abstract: A vehicle stopping device having a panel of material with a split extending from one end of the panel toward an opposite end of the panel, a tactile surface formed adjacent to one of the panel and adapted to attach to a tire rolling thereover, and a reinforcement sash affixed to the panel of material and extending in a partial loop around the split seam. The reinforcement sash has a first end affixed adjacent to the tactile surface and a second end affixed to the tactile surface on an opposite side of the split seam from the first end. The panel has a width dimension suitable for extending across a roadway. The tactile surface extends across this width dimension. The panel is capable of being folded into a concertina. The tactile surface can be either an adhesive applied onto a top surface of the panel of material, an adhesive retained within a plurality of blisters affixed along a forward edge of the panel of material, or a plurality of barbs extending upwardly from the top surface of the panel of material.
    Type: Grant
    Filed: October 12, 1999
    Date of Patent: April 24, 2001
    Assignee: Purple & Green Research, Inc.
    Inventor: Douglas Miller