Access floor panel

Abstract

An access floor panel is disclosed having improved load-bearing strength. One access floor panel in accordance with the present invention includes an upper plate having a surface to support loads and a lower plate being substantially parallel with the upper plate. A core is disposed between the upper and lower plates and a reinforcing member disposed in the core.

What is claimed:  
     
         1 . An access floor panel comprising: 
 a substantially flat upper plate having a surface to support loads;    a substantially flat lower plate being substantially parallel with said upper plate;    a core disposed between the upper and lower plate;    a reinforcing member disposed in the core having a plurality of sections; and    a first section of the reinforcing member having at least one corrugation oriented in a substantially different direction than a corrugation of a second section of the reinforcing member.    
     
     
         2 . The access floor panel of  claim 1  wherein the core comprises a cementatious material.  
     
     
         3 . The access floor panel of  claim 1  further comprising at least one pedestal to support the access flooring panels above a structural floor.  
     
     
         4 . The access floor panel of  claim 1  wherein said access floor panel is substantially square.  
     
     
         5 . The access floor panel of  claim 1  wherein the at least one corrugation of the first section is substantially perpendicular to the corrugation of the second section of the reinforcing member.  
     
     
         6 . The access floor panel of  claim 1  wherein the reinforcing member is perforated.  
     
     
         7 . The access floor panel of  claim 1  wherein the lower plate comprises a pan.  
     
     
         8 . The access floor panel of  claim 1  wherein the first section of the reinforcing member is attached to the second member of the reinforcing member.  
     
     
         9 . A floor panel for a removable floor system comprising: 
 a top;    a bottom having a first edge and a second edge, the first edge being substantially perpendicular to the second edge;    a reinforcing member disposed in the core having a plurality of sections;    a first section of the reinforcing member having a plurality of corrugations extending in planes substantially parallel to the first edge of the bottom; and    a second section of the reinforcing member having a plurality of corrugations extending in planes substantially parallel to the second edge of the bottom.    
     
     
         10 . The floor panel of  claim 9  wherein the plurality of the corrugations of the first section of the reinforcing member comprise a plurality of peaks spaced apart from and substantially parallel to each other.  
     
     
         11 . The floor panel of  claim 9  wherein the core comprises a cementatious material.  
     
     
         12 . The floor panel of  claim 9  wherein said access floor panel is substantially square.  
     
     
         13 . The floor panel of  claim 9  wherein the plurality of the corrugations of the first section of the reinforcing member are orientated substantially perpendicular to the plurality of the corrugations of the second section of the reinforcing member.  
     
     
         14 . The floor panel of  claim 9  wherein the reinforcing member is perforated.  
     
     
         15 . The floor panel of  claim 9  wherein the bottom comprises a pan.  
     
     
         16 . The floor panel of  claim 9  wherein the first section of the reinforcing member is unattached to the second member of the reinforcing member.  
     
     
         17 . A floor panel for use in elevated floor assemblies comprising: 
 a lower plate;    a top plate;    a core defined between said bottom and said top; and    a support member embedded in the core having a plurality of sections; at least one of the plurality of sections having a corrugated pattern oriented substantially in a substantially different direction than a corrugated pattern of another section of the support member.    
     
     
         18 . The floor panel of  claim 17  wherein the corrugated pattern of the first is orientated substantially perpendicular to the corrugated pattern of the other section.  
     
     
         19 . A floor panel comprising: 
 an upper plate;    a lower plate;    a core disposed between the upper and lower plate;    the floor panel having a first section and a second section;    a first reinforcing member disposed in the first section having at least one corrugation; and    a second reinforcing member disposed in the second section having at least one corrugation oriented in a different direction than the at least one corrugation of the first reinforcing member.    
     
     
         20 . A floor panel comprising: 
 an upper plate;    a lower plate being substantially parallel with the upper plate;    a core disposed between the upper and lower plate;    a reinforcing member embedded in the core, the reinforcing member being spaced apart from the upper and lower plates.