Muffler exhaust tip

Abstract

A muffler exhaust tip for a vehicle having a muffler tailpipe includes a substantially hollow, cylindrical muffler tip member with an inboard end adapted to be affixed to the tailpipe and an outboard end. The hollow, cylindrical member is defined by an elongated outer sleeve and a coaxial, perforated inner sleeve which jointly define a baffle interspace therebetween. The inner sleeve carries a plurality of radially inboard protrusions to alter exhaust flow through the muffler exhaust tip. The perforated inner sleeve of the cylindrical member may define a pattern of holes. The baffle interspace may include a layer of fire retardant sound baffling material. The plurality of inboard protrusions define a helix extending through part of the inner sleeve in one embodiment. In another embodiment, part of the outer sleeve of the muffler tip includes a conical reducer such that the inboard end matches the dimensions of the tailpipe.

What is claimed is:  
     
         1 . A muffler exhaust tip for a vehicle having a muffler tailpipe comprising: 
 a substantially hollow, cylindrical muffler tip member with an inboard end adapted to be affixed to said tailpipe and an outboard end, said hollow, cylindrical member defined by an elongated outer sleeve and a coaxial, perforated inner sleeve which jointly define a baffle interspace therebetween, said inner sleeve carrying a plurality of radially inboard protrusions to alter exhaust flow through said muffler exhaust tip.    
     
     
         2 . A muffler exhaust tip as claimed in  claim 1  wherein said perforated inner sleeve of said cylindrical member defines a pattern of holes.  
     
     
         3 . A muffler exhaust tip as claimed in  claim 1  further comprising a layer of fire retardant sound baffling material disposed in said interspace.  
     
     
         4 . A muffler exhaust tip as claimed in  claim 1  wherein said plurality of inboard protrusions define a helix extending through part of said inner sleeve.  
     
     
         5 . A muffler exhaust tip as claimed in  claim 1  wherein part of said outer sleeve includes a reducer.  
     
     
         6 . A muffler exhaust tip as claimed in  claim 1  wherein said outboard end defines a slanted opening.  
     
     
         7 . A muffler exhaust tip as claimed in  claim 2  further comprising a layer of fire retardant sound baffling material disposed in said interspace.  
     
     
         8 . A muffler exhaust tip as claimed in  claim 7  wherein said plurality of inboard protrusions define a helix extending through part of said inner sleeve.  
     
     
         9 . A muffler exhaust tip as claimed in  claim 8  wherein part of said outer sleeve includes a reducer.  
     
     
         10 . A muffler exhaust tip as claimed in  claim 9  wherein said outboard end defines a slanted opening.