Anchor and anchoring system

Abstract

A sleeve and a concentric shaft having head at one end with a rectangular plate through with the shaft interposed between the head and the adjacent end of the sleeve. The plate initially is substantially V-shape and has the apex substantially parallel to a minor axis of the plate so that movement of the sleeve along said shaft towards the head deforms the plate from the V-shape into a substantially plainer configuration with the ends of said plate on a major axis of the plate extending laterally beyond the head. The present invention also embraces a method of fixing the anchor in a bore hole with the ends of the plate in an undercut in the bore hole and filling the bore hole with resin while venting air via a passage extending from adjacent to a closed end of the bore hole through a suitable cover.

I claim: 
     
         1 . An anchor system comprising an anchor having a shaft, a head adjacent to one end of said shaft and extending laterally of said shaft, a sleeve surrounding said shaft and extending axially thereof, a rectangular plate having a major and a minor axis, said plate having a substantially V-shape the apex of which is substantially parallel to said minor axis, said plate having a central hole through which said shaft passes and being positioned on said shaft between said head and said sleeve so that movement of said sleeve along said shaft towards said head deforms said V-shape into a substantially plainer configuration with the ends of said plate on said major axis extending laterally beyond said head and means for a moving said sleeve axially of said shaft. 
     
     
         2 . An anchor system as defined in  claim 1  wherein said apex is adjacent to said sleeve. 
     
     
         3 . An anchor system as defined in  claim 2  further comprising a bore hole having an open end and a closed end remote from said open end, an undercut section formed in said bore hole spaced from said open end, said anchor being positioned within said bore hole and said ends of said plate with said plate deformed into said substantially plainer configuration being received in said undercut section. 
     
     
         4 . An anchor system as defined in  claim 3  further comprising a cover closing said open end, said cover including an inlet for passage of a resin into said bore hole and an outlet for venting gases from said bore hole. 
     
     
         5 . An anchor system as defined in  claim 4  further comprising a venting tube extending from adjacent to said closed end to said outlet for venting gases from said bore hole to vent gases from adjacent to said closed end from said bore hole. 
     
     
         6 . An anchor system as defined in  claim 3  further comprising a resin substantially filling said bore hole around said anchor and including said undercut section. 
     
     
         7 . An anchor system as defined in  claim 4  further comprising a resin substantially filling said bore hole around said anchor and including said undercut section. 
     
     
         8 . An anchor system as defined in  claim 5  further comprising a resin substantially filling said bore hole around said anchor and including said undercut section. 
     
     
         9 . A method of installing and anchor using a resin to improve the connection of the anchor to the substrate in which it is mounted comprising cutting an undercut in a bore hole between an open end and a closed end of said bore hole, mounting an anchor in the bore hole by deforming a plate into the undercut, said plate occupying a minor amount of space in said undercut and being smaller than said bore hole to permit access for resin injected from said open end to pass said plate and enter into said undercut from the side of said plate adjacent to said open end and fill said undercut and thereby surround said anchor with said resin. 
     
     
         10 . A method as defined in  claim 9  wherein said bore hole is inverted so that said closed end of said bore hole is at an elevation higher than the elevation of said open end and said open end is closed by a cap and resin is injected through said cap and a passage is provided from said cap to said closed end, said passage venting of air from said bore hole as said resin is injected.