Patent ID: 7258506
Filing Date: 2007-08-21
Classification: E01F

Abstract:
1. A triangular retractable safety marker, comprising: a horizontally positioned rectangular base member; a first vee shaped corner member having a first arm and a second arm, said first arm rotatably attached to a left portion of said rectangular base member; a first middle riser slidably attached to said second arm of said first vee shaped corner member to extend said second arm of said first vee shaped corner member in a first direction; a first upper riser slidably attached to said first middle riser to extend said first middle riser in said first direction; a second vee shaped corner member having a first arm and a second arm, said first arm rotatably attached to a right portion of said rectangular base member; a second middle riser slidably attached to said second arm of said second vee shaped corner member to extend said second arm of said second vee shaped corner member in a second direction; a second upper riser slidably attached to said second middle riser to extend said second middle riser in said second direction; wherein an equilateral triangle is formed when said first vee shaped corner member and said second vee shaped corner member are rotated outward, said first middle riser and said first upper riser are extended in said first direction, and said second middle riser and said second upper riser are extended in said second direction.