Patent ID: 6821050
Filing Date: 2004-11-23
Classification: E01F

Abstract:
A telescoping security device comprised of:a housing having a top and a bottom portion, wherein the housing is installed below ground; a first tube, having a first and second end, wherein the first outer end of the first tube is mounted on the bottom portion of the housing, and wherein said first tube has an inner stopping means positioned near the first end of the first tube, wherein the first tube's inner stopping means is a semicircular ledge extending inward from the first tube and running along less than half of the circumference of the first tube, thereby leaving at least half the circumference of the first tube unobstructed and wherein the first tube is installed below ground; a second tube, having a first and a second end, placed within said first tube, wherein said second tube has an outer resting means at a position near the second end of the second tube, for resting on the stopping means of the first tube, wherein the a second tube's outer resting means is a semicircular ledge extending outward from the second tube and running along less than half of the circumference of the second tube, thereby leaving at least half the circumference second tube unobstructed; and a stabilizing means for stabilizing the second tube within the first tube attached to the first tube within its first end.