Safety barrier stanchion

Abstract

A stanchion used as part of a regulatory safety barrier around the ledge of an elevated construction slab comprises a square tubular enclosure having an open lower end and a closed upper end. A foot extends orthogonally near the lower end, and rests against the upper surface of the ledge. A clamping member telescopically engaged into the lower end of the enclosure has an arm also extending from its lower extremity and is positioned against the lower surface of the ledge. The arm is urged toward the foot in a ledge-clamping action by the turning of a threaded stem running inside the telescopically engaged enclosure and clamping member. The threaded stem has a lower end captured by a nut welded inside the clamping member. The upper end of the stem protrudes through a hole in the closed end of the enclosure and is fitted with a wing-nut and a hex-nut so that the stem can be turned either by hand or by means of a wrench.

1 . A safety barrier stanchion securable to a floor slab ledge, which comprises: 
 a tubular enclosure having a closed first end and an opposite open second end;    a foot member projecting orthogonally from a side of said enclosure proximal said second end;    at least one bracket projecting orthogonally from said side in the same angular direction as said foot member;    a tubular clamping member having a first extremity telescopically engaged into said second end;    an arm projecting orthogonally proximal a second end of said clamping member;    said clamping member having a threaded inner section;    a threaded stem having a first end section engaged into said threaded inner section and an opposite end section protruding through an aperture in said closed end;    a handle capping said protruding section; and    said handle being secured to said protruding section by a removable diametrical pin;    whereby turning of said handle causes said clamping member to telescopically translate within said enclosure.    
   
   
       2 . The stanchion of  claim 1 , wherein said foot member has at least one hole axially parallel to said tubular enclosure.  
   
   
       3 . The stanchion of  claim 2 , wherein said bracket is U-shaped and has a median portion and the two leg portions secured to said enclosure side.  
   
   
       4 . The stanchion of  claim 3 , wherein said bracket has a hole in said median section.  
   
   
       5 . The stanchion of  claim 1 , wherein said handle includes a hexagonal part axially aligned with said threaded stem and suitable for engagement by a standard size wrench.  
   
   
       6 . The stanchion of  claim 1 , wherein said threaded inner section comprises a nut fixedly secured within said clamping member.  
   
   
       7 . The stanchion of  claim 6  which further comprises a first ring barrier coaxially and fixedly mounted on said threaded stem inside said enclosure proximal said closed end.  
   
   
       8 . The stanchion of  claim 7  which further comprises a second ring barrier coaxially and fixedly mounted on said threaded stem first end section beyond said clamping member threaded section.  
   
   
       9 . The stanchion of  claim 4  which further comprises three of said brackets, a first of said brackets located proximal to said foot member, a second bracket located in a median section of said enclosure, and a third of said brackets located proximal said closed end.  
   
   
       10 . The stanchion of  claim 3 , wherein one of the leg portions of said first bracket is welded to said arm.  
   
   
       11 . A safety barrier mounted on the ledge of an elevated concrete slab which comprises: 
 a plurality of the stanchion of  claim 9  secured to said ledge at spaced apart intervals;    each of said stanchions clamping said ledge between said arm and the foot of said clamping member;    a first elongated member engaged into the first bracket of at least two of said stanchions;    an elongated member engaged into the second bracket of at least two of said stanchions;    a third elongated member engaged into a third bracket of at least two of said stanchions; and    a pin driven through the hole in the foot member of each of said stanchion and into said slab.    
   
   
       12 . The barrier of  claim 11 , wherein said elongated members comprise at least one construction stud.  
   
   
       13 . The barrier of  claim 11 , wherein said elongated members comprise at least one cable.