Patent ID: 7025526
Filing Date: 2006-04-11
Classification: E01F

Abstract:
1. A portable traffic control device, comprising: a housing comprising a length extending from a first end to a second end, a width extending from a first side to a second side, a height extending from a bottom to a top, and a plurality of openings on said top of said housing; a first shaft rotatably connected to said housing and extending from about said first end to about said second end; a second shaft rotatably connected to said housing and extending generally parallel to said first shaft from about said first end to about said second end; a first plurality of blades connected to said first shaft, wherein each blade of said first plurality of blades has a first position extending generally upward through an opening of said plurality of openings in said housing and a second position extending generally horizontally within said housing; a second plurality of blades connected to said second shaft, wherein each blade of said second plurality of blades has a primary position extending generally upward through an opening of said plurality of openings in said housing and a secondary position extending generally horizontally within said housing; biasing means for urging each blade of said first plurality of blades to rotate toward said first position and each blade of said second plurality of blades to rotate toward said primary position; and a rotating means for rotating said first shaft such that each blade of said first plurality of blades moves between said first position and said second position, and for independently rotating said second shaft such that each blade of said second plurality of blades moves between said primary position and said secondary position.