Spiked Barrier

Abstract

A low-harm spiked barrier for a structure such as a fence is disclosed which has a base having spikes. The spikes are spaced apart by a distance less than that required to obtain a finger grip or a foothold on the base between the spikes. The spikes are slightly rounded so the spikes will not likely cause permanent injury and the spikes also provide a psychological deterrent if someone attempting to scale the structure on which the spiked barrier is mounted.

1 . A spiked barrier for mounting on a structure, comprising: 
 a base for attachment to the structure; and    a plurality of spikes extending from the base in side-by-side disposition, the spikes being spaced apart by a distance less than that required to obtain a finger grip or obtain a foothold on the base between the spikes.    
   
   
       2 . A spiked barrier as defined in  claim 1 , wherein the base includes an attachment device for facilitating attachment of the base to the structure.  
   
   
       3 . A spiked barrier as defined in  claim 2 , wherein the attachment device comprises one or more openings for receiving a fastener to connect the base to the structure.  
   
   
       4 . A spiked barrier as defined in  claim 2 , wherein the attachment device is a recess formed in or by the base for facilitating attachment of the base to the structure.  
   
   
       5 . A spiked barrier as defined  claim 1 , wherein the spikes are conical and have a large diameter bottom end adjacent the base and an apex remote from the base, the apex being rounded.  
   
   
       6 . A spiked barrier as defined in  claim 5 , wherein the spikes are pyramid shaped with a square or triangular base or are talon or thorn shaped.  
   
   
       7 . A spiked barrier as defined in  claim 1 , wherein the spikes are hollow.  
   
   
       8 . A spiked barrier as defined in  claim 1 , wherein some of the spikes extend from the base to a height that is different to a height to which other spikes extend.  
   
   
       9 . A spiked barrier as defined in  claim 1 , wherein the spikes are arranged in side-by-side disposition in at least one generally straight line.  
   
   
       10 . A spiked barrier as defined in  claim 1 , wherein the spikes are arranged in side-by-side disposition in two or more lines of spikes provided on the base.  
   
   
       11 . A spiked barrier as defined in  claim 1 , wherein the base comprises an angled section having a first portion and a second portion arranged transverse to the first portion with each portion having at least one line of spikes.  
   
   
       12 . A spiked barrier as defined in  claim 10 , wherein the base is cylindrical.  
   
   
       13 . A spiked barrier as defined in  claim 10 , wherein the cylindrical base has central passage or is solid.  
   
   
       14 . A spiked barrier as defined in  claim 1 , wherein the base comprises a first portion and two downwardly inclined portions arranged one on each side of the first portion, the first portion having two rows of spikes and each inclined portion having one row of spikes.  
   
   
       15 . A spiked barrier as defined in  claim 14 , wherein the base further comprises a substrate having three portions which match the contour of the first and two downwardly inclined portions and at least one further portion arranged at an angle with respect to each downwardly inclined portion to form an open octagonal configuration in transverse cross-section.  
   
   
       16 . A spiked barrier as defined in  claim 15 , wherein the free ends of the further portions are provided with a bead.  
   
   
       17 . A spiked barrier as defined in  claim 1 , wherein the base is of U-shaped configuration and curved in transverse cross-section with a single line of spikes being arranged on the base.  
   
   
       18 . A spiked barrier as defined in  claim 1 , wherein the base is of substantially cylindrical form defining a cap and the spikes are arranged in circular lines on the cap.  
   
   
       19 . A spiked barrier as defined in  claim 1 , wherein the base is in the form of a substantially flat plate having a first face and a second opposite face, the spikes extending from the first face, some of the spikes being of different height to others of the spikes, and at least one of the first face and second face having at least one groove which forms a web to enable one part of the spiked barrier to pivot relative to another part of the spiked barrier.  
   
   
       20 . A spiked barrier as defined in  claim 19 , wherein the at least one groove comprises a plurality of first grooves extending in a first direction and a plurality of second grooves extending in a direction transverse to the first direction.  
   
   
       21 . A spiked barrier for mounting on a paling fence or thin perimeter structure, comprising: 
 a base having a first portion, and a second portion arranged transverse with respect to the first portion;    a plurality of spikes extending from the first portion and the second portion in side-by-side disposition; and    attachment openings for securing at least one of the first portion or second portion to the fence or structure so that the first portion is arranged on top of the fence or structure and the second portion extends substantially parallel to the plane of the fence or structure.    
   
   
       22 . A spiked barrier as defined in  claim 21 , wherein the first and second portion include openings for receiving fasteners to secure the base to the fence or structure.  
   
   
       23 . A spiked barrier as defined in  claim 21 , wherein the spikes are conical and have a large diameter bottom end adjacent the base and an apex remote from the base, the apex being rounded.  
   
   
       24 . A spiked barrier as defined in  claim 21 , wherein the spikes are pyramid shaped with a square or triangular base or are talon or thorn shaped.  
   
   
       25 . A spiked barrier as defined in  claim 21 , wherein the spikes are hollow.  
   
   
       26 . A spiked barrier as defined in  claim 21 , wherein some of the spikes extend from the base to a height that is different to a height to which other spikes extend.  
   
   
       27 . A spiked barrier as defined in  claim 21 , wherein at least two lines of spikes are arranged in the first portion and one line of spikes is arranged on the second portion.  
   
   
       28 . A spiked barrier as defined in  claim 21 , wherein the spikes are spaced apart by a distance less than that required to obtain a finger grip on the spiked barrier.  
   
   
       29 . A spiked barrier for a pool fence which has a plurality of uprights with pairs of adjacent uprights being joined by a U-shaped transition, said spiked barrier comprising: 
 a base having a substantially U-shaped configuration which matches the U-shaped transition of the fence;    a plurality of spikes on the base projecting outwardly from the base; and    a curved recess formed in or by the base for locating on the U-shaped transition section to attach the spike barrier to the U-shaped transition section.    
   
   
       30 . A spiked barrier as defined in  claim 29 , wherein the spikes are conical and have a large diameter bottom end adjacent the base and an apex remote from the base, the apex being rounded.  
   
   
       31 . A spiked barrier as defined in  claim 29 , wherein the spikes are pyramid shaped with a square or triangular base or are talon or thorn shaped.  
   
   
       32 . A spiked barrier as defined in  claim 29 , wherein the spikes are hollow.  
   
   
       33 . A spiked barrier as defined in  claim 29 , wherein some of the spikes extend from the base to a height that is different to a height to which other spikes extend.  
   
   
       34 . A spiked barrier as defined in  claim 29 , wherein the recess is defined by the base by forming the base with a U-shaped configuration in transverse cross-section.  
   
   
       35 . A spiked barrier, comprising: 
 a base having an upper base component and a substrate;    a plurality of spikes located on the base component in side-by-side disposition; and    the substrate defining a hollow structure to facilitate connection of the spiked barrier to a structure.    
   
   
       36 . A spiked barrier as defined in  claim 35 , wherein the substrate is an open octagonal shape in transverse cross section and the upper component has three portions which match the contour of three of the sides of the octagonal substrate.  
   
   
       37 . A spiked barrier as defined in  claim 35 , wherein the substrate is circular in transverse cross-section and the component is part circular in transverse cross-section.  
   
   
       38 . A spiked barrier as defined in  claim 35 , wherein the spikes are conical and have a large diameter bottom end adjacent the base and an apex remote from the base, the apex being rounded.  
   
   
       39 . A spiked barrier as defined in  claim 35 , wherein the spikes are pyramid shaped with a square or triangular base or are talon or thorn shaped.  
   
   
       40 . A spiked barrier as defined in  claim 35 , wherein the spikes are hollow.  
   
   
       41 . A spiked barrier as defined in  claim 35 , wherein some of the spikes extend from the base to a height that is different to a height to which other spikes extend.  
   
   
       42 . A barrier element for a post, comprising: 
 a cap having a top and a depending side wall; and    a plurality of spikes arranged in side-by-side disposition on the cap.    
   
   
       43 . A barrier element as defined in  claim 42 , wherein the top is contoured to match the contour of the top of the post.  
   
   
       44 . A barrier element as defined in  claim 42 , wherein the spikes are arranged in a plurality of circular arrays on both the top and the skirt.  
   
   
       45 . A barrier element as defined in  claim 42 , wherein the spikes are conical and have a large diameter bottom end adjacent the base and an apex remote from the base, the apex being rounded.  
   
   
       46 . A barrier element as defined in  claim 42 , wherein the spikes are pyramid shaped with a square or triangular base or are talon or thorn shaped.  
   
   
       47 . A barrier element as defined in  claim 42 , wherein the spikes are hollow.  
   
   
       48 . A barrier element as defined in  claim 42 , wherein some of the spikes extend from the base to a height that is different to a height to which other spikes extend.  
   
   
       49 . A spiked barrier for mounting on a structure, comprising: 
 a plate having a first face and an opposite second face;    a plurality of spikes extending from the first face;    a plurality of grooves in one of the first and second face extending in a first direction;    a plurality of grooves in one of the first and second face extending in a direction transverse to the first direction; and    the grooves defined in webs to facilitate pivoting of one part of the barrier element relative to another part of the barrier element.    
   
   
       50 . A spiked barrier as defined in  claim 49 , wherein the spikes are hollow.  
   
   
       51 . A spiked barrier as defined in  claim 49 , wherein some of the spikes extend from the base to a height that is different to a height to which other spikes extend.  
   
   
       52 . A spiked barrier as defined in  claim 49 , wherein the second face has shallow grooves for receiving glue to facilitate gluing of the spike barrier to the structure.