Hook facility for concrete structure

Abstract

A lifting facility for encapsulation in a concrete wall includes a bowl element forming a cavity and having a rim occupying a rim plane. The bowl element has a side wall defining an elongated aperture, which includes a pair of spaced-apart openings connected by a slit. An articulated bar having a constant cross section has a loop portion within the cavity, and intermediate portions occupying the openings.

1 . A lifting facility for encapsulation in a concrete wall comprising: 
 a bowl element defining a cavity and having a rim occupying a rim plane;    the bowl element having a side wall defining an elongated aperture; and    the aperture comprising a pair of spaced-apart openings connected by a slit.    
     
     
         2 . The facility of  claim 1  including an elongated strength member having a loop portion within the cavity, and penetrating the side wall at the openings.  
     
     
         3 . The facility of  claim 2  wherein the strength member is closely received within the openings, such that concrete does not readily flow through the openings.  
     
     
         4 . The facility of  claim 2  wherein the strength member is an articulated member having a constant cross section.  
     
     
         5 . The facility of  claim 2  wherein the strength member is a bare bar.  
     
     
         6 . The facility of  claim 5  wherein the bar is a cable formed of a plurality of cable strands.  
     
     
         7 . The facility of  claim 2  including a concrete wall structure encapsulating at least a portion of the facility, the structure having a surface co planar with the rim plane, the bowl cavity being free of concrete such that the loop portion is accessible.  
     
     
         8 . The facility of  claim 7  wherein the end portions of the strength member are imbedded in the concrete.  
     
     
         9 . The facility of  claim 1  wherein the openings are circular.  
     
     
         10 . The facility of  claim 1  wherein the openings are elliptical.  
     
     
         11 . The facility of  claim 1  wherein the openings are a pattern of radially arranged slits.  
     
     
         12 . The facility of  claim 1  wherein the slit comprises opposed panel portions abutting each other, such that concrete does not readily flow through the slit.  
     
     
         13 . A lifting facility for encapsulation in a concrete wall comprising: 
 a bowl element defining a cavity and having a rim occupying a rim plane;    the bowl element having a side wall defining an elongated aperture;    the aperture comprising a pair of spaced-apart openings connected by a slit;    a unitary elongated articulated member having a constant cross section and having a loop portion within the cavity; and    the articulated member having intermediate portions occupying the openings.    
     
     
         14 . The facility of  claim 13  wherein the articulated member has end portions extending laterally beyond the bowl element.  
     
     
         15 . The facility of  claim 13  wherein the opening are sized to closely receive the articulated member, such that concrete does not readily flow through the openings.  
     
     
         16 . The facility of  claim 13  including a concrete wall structure encapsulating at least a portion of the facility, the structure having a surface co planar with the rim plane, the bowl cavity being free of concrete such that the loop portion is accessible.  
     
     
         17 . The facility of  claim 13  wherein the openings are circular.  
     
     
         18 . The facility of  claim 13  wherein the openings are elliptical.  
     
     
         19 . The facility of  claim 13  wherein the openings are a pattern of radially arranged slits.  
     
     
         20 . The facility of  claim 13  wherein the slit comprises opposed panel portions abutting each other, such that concrete does not readily flow through the slit.