Classifications

• • E—FIXED CONSTRUCTIONS
  • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
  • E01F13/00—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions
  • E01F13/04—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions movable to allow or prevent passage
  • E01F13/044—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions movable to allow or prevent passage the barrier being formed by obstructing members situated on, flush with, or below the traffic surface, e.g. with inflatable members on the surface
  • E01F13/046—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions movable to allow or prevent passage the barrier being formed by obstructing members situated on, flush with, or below the traffic surface, e.g. with inflatable members on the surface the obstructing members moving up in a translatory motion, e.g. telescopic barrier posts

Definitions

• a feature of this invention is the inner pole of the telescoping pole is outfitted with a dead bolt that automatically fits into a detent to lock the pole in the raised vertical position by use of a judicious spring assembly and is automatically released by a key operated lock that permits the spring assembly to re-position the dead bolt out of the detent.
• a spring is utilized to assist the spring assembly for ease of removing the dead bolt from the detent.
• the dead bolt is pivotally mounted to the spring assembly for ease of egress and ingress from and into the detent.
• Fig. 4 is a top plan view of the dead bolt; Fig. 4A is an elevated view of the dead bolt;
• Fig. 4B is an end view of the dead bolt depicted in Fig 4;
• the end of the anchor bar 4 is suitably attached to the surface of the outer • tube 6, say by welding as illustrated by weldments 4a.
• the outer tube virtually cannot be removed with outer tube 6 and in sliding relationship thereto and is easily pulled out of the receptacle defined by outer tube 6.
• Inner tube 5 and outer tube 6 are preferably made from stainless steel and are hollow and are square or rectangularly shaped in cross section. Obviously other metals and shapes may be utilized without departing from the scope of this invention.
• each of the walls of the respective tubes define a flat surface and are in parallel relationship with the complementary wall of each of the tubes.
• the lid or cover 18 which is a metallic flat member is suitably attached to the top end of the inner tube 5 and extends a sufficient distance to overhang the end of tube 6 to prevent dirt and water from migrating into the space between the inner tube 5 and outer tube 6.
• a gasket 17 which may be made from any suitable elastomeric or rubber material is suitably attached to the gasket support 17a which may be a metal plate welded to the top of the outer tube 6. This member serves as the seal.
• Holes 10 may be included at the bottom of the tube 6 to allow water to escape. As noted for the purpose of assuring the structural integrity of the tubes they may be closed on the bottom. The tops are obviously opened to allow for the telescopic relationship.
• the detent 15 may be made from a separate member that is shaped like a square cup and may be welded in a slot formed in the wall of the outer tube 6.
• the dead bolt 11 is depicted in Figs. 4, 4A and 4B as having a cylindrical portion 34 and a bifurcated portion 36. The cylindrical portion passes through aperture 34a formed in the wall of the inner tube 5.
• the dead bolt is pivotally mounted on lever 14. This configuration assures easy movement into and out of the detent 15.
• the shank 40 of bolt 42 extends through holes formed on the bifurcated portion and is secured by the nut 44 threaded to the threaded portion formed on the end of shank 40.

Applications Claiming Priority (3)

Publications (1)

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ID=25032392

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• 1997
  • 1997-11-27 WO PCT/FI1997/000733 patent/WO1998024979A1/en not_active Application Discontinuation
  • 1997-11-27 EP EP97913228A patent/EP0897433A1/en not_active Withdrawn

Non-Patent Citations (1)

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