Patent ID: 6997417
Filing Date: 2006-02-14
Classification: B61L

Abstract:
1. An extendible gate for attachment to a base unit mounted adjacent a traffic path to block traffic flow along the traffic path, said gate comprising: A) a first hollow member affixed to the base for limited rotation between open and blocking positions, B) a second member, C) support means in said first hollow member for supporting said second member for longitudinal movement along an extension axis with minimal sliding friction, and D) a stop member internally of said first hollow member defining the limits of the displacement distance whereby in the open position said second member nests in said first hollow member and in the blocking position the extension axis slopes downwardly from the base unit thereby causing said second member to extend from said first hollow member at least almost entirely by the force of gravity to a position determined by said stop member thereby to block traffic flow along the traffic pathway, said second member returning to it nested position at least almost entirely by the force of gravity as the extension axis acquires an upward slope from the base unit.