Endbell cylinder frame and housing for oil-free

Abstract

An endbell cylinder frame is formed as an integral one-piece system having a motor end frame, a cylinder barrel, and a cylinder head mating face therein. The motor end frame includes plurality of concentric passages. The cylinder head mating face laterally extends from the motor end frame and connects to an end portion of the cylinder barrel such that a remainder of the cylinder barrel is designed to extend into an area within a compressor housing. Another portion of the cylinder barrel is circumferentially enlarged and is supportively connected to the motor end frame. Further, the cylinder head mating face includes a plurality of open passages to permit air through.

What is claimed is:  
     
         1 . An improved endbell/housing assembly for an oil-free type air compressor which provides for enhanced life of a piston/cylinder seal, the improvement comprising: 
 a housing shroud;    an endbell cylinder frame having a cylinder barrel, a motor end frame connected to one end of said housing shroud and includes a plurality of spatially disposed passages therein to permit air flow therethrough, and cylinder head mating face, said cylinder head mating face laterally extending from said motor end frame and connected to another end of said housing shroud and connects to a portion of said cylinder barrel with a remainder of said cylinder barrel extending into an area between said housing shroud and said motor end frame.    
     
     
         2 . The improved endbell/housing assembly for an oil-free air compressor of  claim 1 , wherein said passages are generally concentrically spatially positioned.  
     
     
         3 . The improved endbell/housing assembly for an oil-free air compressor of  claim 1 , wherein an end portion of said remainder of cylinder barrel is circumferentially enlarged and is supportively connected to said motor end frame.  
     
     
         4 . The improved endbell/housing assembly for an oil-free air compressor of  claim 1 , wherein said cylinder head mating face includes a plurality of passages disposed therein about said portion of cylinder barrel to permit air flow therethrough.  
     
     
         5 . The improved endbell/housing assembly for an oil-free air compressor of  claim 1 , wherein said endbell cylinder frame is die cast.  
     
     
         6 . The improved endbell/housing assembly for an oil-free air compressor of  claim 4 , which includes a barrel sleeve formed in a manner to assure having an inner wall surface with minimal abrasive defects and wherein said cylinder barrel is die cast about said sleeve in a manner to integrally retain said sleeve.  
     
     
         7 . The improved endbell/housing assembly for an oil-free air compressor of  claim 6 , wherein said barrel sleeve includes grooves formed in an outer surface and said grooves are filled by said die cast such that said cylinder barrel integrally retains said sleeve.  
     
     
         8 . An endbell cylinder frame for an oil free type air compressor having a housing shroud which provides for an enhanced life of a piston/cylinder seal, said endbell cylinder frame comprising: 
 an endbell cylinder frame having a cylinder barrel, a motor end frame configured to connect to the housing shroud and includes a plurality of spatially disposed passages therein to permit air flow therethrough, and cylinder head mating face laterally extending from said motor end frame and configured to connect to the housing shroud and which connects to a portion of said cylinder barrel such that a remainder of said cylinder barrel extends laterally disposed from said motor end frame.    
     
     
         9 . The endbell cylinder frame of  claim 8 , wherein said passages are generally concentrically spatially positioned.  
     
     
         10 . The endbell cylinder frame of  claim 8 , wherein an end portion of said remainder of the cylinder barrel is circumferentially enlarged and is supportively connected to said motor end frame.  
     
     
         11  The endbell cylinder frame of  claim 8 , wherein said cylinder head mating face includes a plurality of passages disposed therein about said portion of said cylinder barrel to permit air flow therethrough.  
     
     
         12 . The endbell cylinder frame of  claim 8 , wherein said endbell cylinder frame is die cast.  
     
     
         13 . The endbell cylinder frame of  claim 12 , which includes a barrel sleeve formed in a manner to assure having an inner wall surface with minimal abrasive defects and wherein said cylinder barrel is die cast about said sleeve in a manner to integrally retain said sleeve.  
     
     
         14 . The endbell cylinder frame of  claim 13 , wherein said barrel sleeve includes grooves formed in an outer surface and said grooves are filled by said die cast such that said cylinder barrel integrally retains said sleeve.  
     
     
         15 . The endbell cylinder frame of  claim 12 , wherein said endbell cylinder frame is an integral one-piece die-casting.