Concrete forming panel system

Abstract

A concrete forming panel system having at least two rectangular panels wherein each panel has a pair of spaced apart sidewalls. Each panel has at least one opening along each sidewall and the panels are adapted to be positioned in a side-by-side relationship so that one sidewall of each panel abuts against the sidewall of the adjacent side panel and, upon doing so, the opening in one sidewall of the first panel registers with the opening in the abutting sidewall of its adjacent side panel. An elongated pin is slidably mounted to each panel and movable between an extended position in which the pin extends through registering openings on adjacent panels, and a retracted position in which the wall pin is retracted from said registering openings. A latch is pivotally mounted to the pin so that, with the wall pin in its extended position, the latch pin extends through a transverse opening in the pin to lock the sidewalls of the adjacent panels together against relative movement.

We claim:  
     
         1 . A concrete forming panel system comprising: 
 at least two rectangular panels, each panel having a pair of spaced side rails,    said panels having at least one opening along each side rail,    said panels adapted to be positioned in a side-by-side relationship so that said side rail of each panel abuts against the side rail of the adjacent side rail and said at least one opening in each side panel registers with the at least one opening in the adjacent panel,    an elongated wall pin slidably mounted to each panel and movable between an extended position in which the wall pin extends through registering openings on said side rails of adjacent panels, and a retracted position in which said wall pin is retracted from said registering openings,    means connected to the panel system for selectively locking the abutting sidewalls of adjacent panels against movement relative to each other.    
     
     
         2 . The invention as defined in  claim 1  wherein said panels are constructed of aluminum.  
     
     
         3 . The invention as defined in  claim 2  wherein each sidewall comprises an aluminum tube.  
     
     
         4 . The invention as defined in  claim 1  and comprising a tubular and cylindrical bushing positioned in each said opening in said side rail.  
     
     
         5 . The invention as defined in  claim 1  wherein said at least one opening in said side rails comprises a plurality of spaced apart openings.  
     
     
         6 . The invention as defined in  claim 1  wherein said wall pin includes a flange which abuts against an inner surface of said side rail when said wall pin is in said extended position.  
     
     
         7 . The invention as defined in  claim 6  wherein said locking means comprises a latch pivotally mounted to said pin and movable between a locked position in which a portion of said latch extends through a slot in said wall pin thereby entrapping the abutting side rails of adjacent panels between said portion of said latch and said flange, and an unlocked position in which said portion of said latch is retracted from said pin slot.  
     
     
         8 . The invention as defined in  claim 7  wherein said portion of said latch is wedge shaped.  
     
     
         9 . The invention as defined in  claim 7  wherein said latch is pivotally mounted to said wall pin about an axis transverse to the axis of said wall pin.  
     
     
         10 . The invention as defined in  claim 1  and comprising a slide block mounted to each panel, said slide block having a through opening which slidably receives said wall pin.