Shallow Mount Safety Bollards

Abstract

A shallow mount safety bollard assembly includes a bottom plate having a front edge, an aft edge, and a longitudinal axis extending in a front-to-aft direction and a lateral axis perpendicular to the longitudinal axis, a pair of side bars, having front ends and aft ends, attached to a top plate surface of the bottom plate and extending generally parallel to the longitudinal axis, a sleeve having a bottom end attached to the top plate surface between the pair of side bars, an internal bore, and a top opening, a bollard having a lower section located in the internal bore, and a latch moveable from a lock position fixedly securing the bollard to the sleeve and an unlock position allowing the bollard to be removed from the sleeve.

What is claimed is: 
     
         1 . A bollard assembly, comprising:
 a bottom plate having a front edge, an aft edge, and a longitudinal axis extending in a front-to-aft direction and a lateral axis perpendicular to the longitudinal axis;   a pair of side bars, having front ends and aft ends, attached to a top plate surface of the bottom plate, and extending generally parallel to the longitudinal axis;   a sleeve having a bottom end attached to the top plate surface between the pair of side bars, an internal bore, and a top opening at a top end of the sleeve;   a bollard having a lower section located in the internal bore;   a first structure fixed with the lower section;   a second structure positioned in the internal bore and cooperative with the first structure to position the bollard in a blocking position where vertical movement of the bollard is restricted; and   a latch moveable from a lock position fixedly securing the bollard to the sleeve and an unlock position allowing the bollard to be removed from the sleeve.   
     
     
         2 . The bollard assembly of  claim 1 , further comprising a collar at the top end and encircling the top opening; and
 a base height from the bottom plate to the collar of approximately  8  inches or less.   
     
     
         3 . The bollard assembly of  claim 1 , comprising a plate positioned inside of the lower section and extending vertically from a bottom end of the bollard, wherein the blocking position orients the plate generally parallel to the longitudinal axis. 
     
     
         4 . The bollard assembly of  claim 3 , wherein the first structure is in a same vertical plane with the plate. 
     
     
         5 . The bollard assembly of  claim 1 , further comprising an L-shaped steel plate having a stiffener section positioned inside of the lower section and an extension section extending outside of the lower section of the bollard, wherein the extension section is the first structure. 
     
     
         6 . The bollard assembly of  claim 5 , wherein the blocking position orients the stiffener section generally parallel to the longitudinal axis. 
     
     
         7 . The bollard assembly of  claim 6 , further comprising a collar at the top end and encircling the top opening; and
 a base height from the bottom plate to the collar of approximately 8 inches or less; and   a height of the bottom plate and the pair of side bars of approximately 4.5 inches.   
     
     
         8 . The bollard assembly of  claim 1 , wherein the second structure comprises:
 a bottom semi-circular ring extending from a first end to a second end;   an upper semi-circular ring extending from a third end to a fourth end, the upper semi-circular ring located above the bottom semi-circular ring relative to the bottom plate with the third end and fourth end radially offset from the first end and the second end;   a vertical slot extending from the top opening to the bottom plate between the first and the second ends and the third and the fourth ends; and   one of the first end and the second end positioned proximate the longitudinal axis and below the upper semi-circular ring.   
     
     
         9 . The bollard assembly of  claim 8 , further comprising a plate positioned inside of the lower section and extending vertically from a bottom end of the bollard, wherein the blocking position orients the plate generally parallel to the longitudinal axis. 
     
     
         10 . The bollard assembly of  claim 9 , wherein the first structure is in a same vertical plane with the plate. 
     
     
         11 . The bollard assembly of  claim 8 , further comprising an L-shaped steel plate having a stiffener section positioned inside of the lower section and an extension section extending outside of the lower section of the bollard, wherein the extension section is the first structure. 
     
     
         12 . The bollard assembly of  claim 11 , wherein the blocking position orients the stiffener section generally parallel to the longitudinal axis. 
     
     
         13 . A bollard assembly, comprising:
 a bottom plate having a front edge, an aft edge, and a longitudinal axis extending in a front-to-aft direction and a lateral axis perpendicular to the longitudinal axis;   a pair of side bars, having front ends and aft ends, attached to a top plate surface of the bottom plate, and extending generally parallel to the longitudinal axis;   a front bar attached directly to the top plate surface proximate the front ends and extending to the pair of side bars;   a sleeve having a bottom end attached to the top plate surface between the pair of side bars, an internal bore, and a top opening at a top end of the sleeve, wherein the sleeve is fixed to the front bar;   a bollard having a lower section located in the internal bore;   a first structure fixed with the lower section;   a second structure positioned in the internal bore and cooperative with the first structure to position the bollard in a blocking position where vertical movement of the bollard is restricted; and   a latch moveable from a lock position fixedly securing the bollard to the sleeve and an unlock position allowing the bollard to be removed from the sleeve.   
     
     
         14 . The bollard assembly of  claim 13 , wherein an area between the pair of side bars, the front bar, and above the bottom plate is not enclosed by a metal member. 
     
     
         15 . The bollard assembly of  claim 13 , further comprising a collar at the top end and encircling the top opening;
 a base height from the bottom plate to the collar of approximately  8  inches or less; and   a height of the bottom plate, the front bar, and the pair of side bars of approximately 4.5 inches.   
     
     
         16 . The bollard assembly of  claim 15 , wherein an area between the pair of side bars, the front bar, and above the bottom plate is not enclosed by a metal member. 
     
     
         17 . The bollard assembly of  claim 14 , wherein the second structure comprises:
 a bottom semi-circular ring extending from a first end to a second end;   an upper semi-circular ring extending from a third end to a fourth end, the upper semi-circular ring located above the bottom semi-circular ring relative to the bottom plate with the third end and fourth end radially offset from the first end and the second end;   a vertical slot extending from the top opening to the bottom plate between the first and the second ends and the third and the fourth ends; and   one of the first end and the second end positioned proximate the longitudinal axis and below the upper semi-circular ring.   
     
     
         18 . The bollard assembly of  claim 17 , comprising a plate positioned inside of the lower section and extending vertically from a bottom end of the bollard, wherein the blocking position orients the plate generally parallel to the longitudinal axis. 
     
     
         19 . The bollard assembly of  claim 17 , further comprising an L-shaped steel plate having a stiffener section positioned inside of the lower section and an extension section extending outside of the lower section of the bollard, wherein the extension section is the first structure. 
     
     
         20 . The bollard assembly of  claim 19 , further comprising a collar at the top end and encircling the top opening;
 a base height from the bottom plate to the collar of approximately  8  inches or less; and   a height of the bottom plate, the front bar, and the pair of side bars of approximately 4.5 inches.