Concrete anchor

Abstract

The invention covers an anchor system for securing an object to a work-piece such as a concrete surface. The system includes an anchor portion with a tubular member extending from an anchor head. The tubular member includes a wall and the wall including a first interior surface. The tubular member also includes a second interior surface having an enlarged diameter with respect to the first interior surface. The system further includes a support portion including a base portion and a shaft portion extending from the base portion. The shaft portion includes a first exterior surface and a second exterior surface of a greater diameter than the first exterior surface and the base portion further includes a central portion. The support portion includes a through passage. A distal end of the shaft portion is received in the interior surface of the wall and a fastener is disposed in the through passage.

1 . An anchor system securable to a work-piece comprising:
 An anchor portion including a tubular member extending from an anchor head, the tubular member including a wall and the wall including a first interior surface, the tubular member including a second interior surface having an enlarged diameter with respect to the first interior surface;   A support portion including a base portion and a shaft portion extending from the base portion, the shaft portion including a first exterior surface and a second exterior surface of a greater diameter than the first exterior surface, the base portion further including a central portion and the support portion including a through passage;   a distal end of the shaft portion received in the interior surface of the wall,   a fastener disposed in the through passage and including a drive end and a fastening end, the drive end extending from the distal end a predetermined distance,   
       wherein at least a portion of one of the first and the second interior surfaces including threads, and 
       wherein the system includes a first pre-set configuration and a second set configuration and the anchor portion travels telescopically relative to the support potion to transition from the first configuration to the second configuration, and 
       a lower portion of the anchor head able to contact the drive end to drive the fastener during the travel to extend the fastening end into the work-piece, and 
       wherein the telescopic travel includes sufficient interaction between the second interior and second exterior surfaces to prevent passage of concrete to the second interior surface in the set configuration. 
     
     
         2 . The Anchor system of  claim 1 , wherein the first interior surface is closer to the head portion than the second interior surface. 
     
     
         3 . The anchor system of  claim 1 , wherein the one of the first and the second interior surfaces is the first interior surface. 
     
     
         4 . The anchor system of  claim 1 , wherein the central portion includes a skirt extending therefrom. 
     
     
         5 . The anchor system of  claim 3 , wherein the first exterior surface contacts the threads to guide the telescopic travel. 
     
     
         6 . The anchor system of  claim 1 , wherein the one of the first and the second interior surfaces is the second interior surface. 
     
     
         7 . The anchor system of  claim 6 , wherein the second exterior surface contacts the threads to guide the telescopic travel. 
     
     
         8 . The anchor system of  claim 1 , wherein the one of the first and second interior surfaces is at least a portion of the first and a portion of the second. 
     
     
         9 . The anchor system of  claim 8 , wherein the first and second exterior surfaces contact respective threads to guide the telescopic travel. 
     
     
         10 . The anchor system of  claim 1 , wherein the base portion further includes an upwardly extending ridge and wherein the ridge contacts an outer surface of the tubular member when the anchor system is in the set configuration. 
     
     
         11 . The anchor system of  claim 10 , wherein the ridge is an arcuate ridge. 
     
     
         12 . The anchor system of  claim 1 , wherein a distal end of tubular portion  120  is received in seat. 
     
     
         13 . The anchor system of  claim 12 , wherein the seat has a u-shaped cross section. 
     
     
         14 . The anchor system of  claim 1 , wherein the anchor portion is made of a metal material. 
     
     
         15 . The anchor system of  claim 1 , wherein the support portion is made of a flexible material. 
     
     
         16 . The anchor system of  claim 1 , wherein the support portion includes a skirt. 
     
     
         17 . The anchor system of  claim 16 , wherein the skirt extends radially outward and downward from the central portion. 
     
     
         18 . The anchor system of  claim 16 , wherein the central portion and the skirt contact the work-piece in the set configuration.