Tripod boom rig

Abstract

A sail track and sleeve assembly is provided to rotate about a round mast so as to provide an improved airflow to the leeward face of the sail. A teardrop shaped boom having an open interior is rotatable about the mast and freely rotates with the rotating sail track.

I claim:  
     
         1 . In combination with a cylindrical fixed mast for a sailboat means affixing a sail to the mast comprising a plurality of sleeves embracing the mast, a sail track coextensive with the mast, each sleeve having means supporting said sail track, said track having means to engage the luff of a sail.  
     
     
         2 . A combination as in  claim 1  wherein sliders are provided to engage the luff of the sail.  
     
     
         3 . A combination as in  claim 1  including a boom attached to one or more sleeves embracing the mast, said sleeves adapted for rotation about the mast.  
     
     
         4 . A combination as in  claim 1  wherein the boom is affixed to two spaced sleeves rotatable about the mast.  
     
     
         5 . The combination as in  claim 4  wherein the boom is a teardrop shaped frame with supporting trusses.  
     
     
         6 . The combination as in  claim 5  wherein the boom extends forward of the mast and has a forward edge that supports a transverse track having a sliding car.  
     
     
         7 . A sailboat having a round mast, at least one sleeve embracing the mast for rotation thereabout, a sail track means substantially coextensive with the mast and affixed to the sleeve, the luff of a sail slidably engaging the sail track.  
     
     
         8 . A sailboat as in  claim 7  wherein a boom is attached to the mast by sleeve means embracing the mast  
     
     
         9 . A sailboat as in  claim 8  where the boom extends forward of the mast, at least three shrouds are provided connected to the mast and the boom, two shrouds being attached aft of the mast to the boom frame and one shroud extending forward to the frame.  
     
     
         10 . A sailboat as in  claim 8  wherein the sleeve means comprises a plurality of sleeves spaced along the mast.