On-shore sail shade

Abstract

An on-shore sail shade is provided which includes a sail secured to a mast and a boom with the sail shade being positioned on a patio or the like to provide desired shade protection. A foot portion of the sail is located close to the ground or supporting surface so that the sail shade will provide the desired shade during all daylight hours.

1 . An on-shore sail shade apparatus, comprising:
 a mast support associated with a supporting surface;   an upstanding mast having upper and lower ends;   said lower end of said mast being selectively secured to said mast support;   an elongated, horizontally disposed boom having inner and outer ends;   said inner end of said boom being secured to said mast closely adjacent said lower end thereof;   a flexible, vertically disposed, generally triangularly-shaped sail, having a generally horizontally disposed foot portion with inner and outer ends, a vertically disposed luft portion, having upper and lower ends, extending upwardly from the inner end of said foot portion, and a leech portion extending downwardly and outwardly from said upper end of said luft portion to said outer end of said foot portion;   said foot portion of said sail being secured to said boom whereby said foot portion of said sail is positioned closely adjacent the supporting surface;   said upper end of said luft portion of said sail being secured to said mast adjacent said upper end thereof;   said boom being horizontally rotatably movable between various positions to enable said sail to be positioned in various shading positions.   
     
     
         2 . The apparatus of  claim 1  wherein said mast is rotatably secured, about a vertical axis to said mast support and said boom is fixed to said mast for rotation therewith. 
     
     
         3 . The apparatus of  claim 2  wherein said mast is selectively removably received by said mast support. 
     
     
         4 . The apparatus of  claim 1  wherein said mast support is embedded in said supporting surface. 
     
     
         5 . The apparatus of  claim 1  wherein said boom is selectively removably secured to said mast. 
     
     
         6 . The apparatus of  claim 1  wherein said boom is secured in various positions by means extending between said outer end of said boom and an anchor. 
     
     
         7 . The apparatus of  claim 6  wherein said anchor is embedded in said supporting surface. 
     
     
         8 . The apparatus of  claim 1  wherein said boom is maintained in its various positions by a weight operatively connected to said outer end thereof. 
     
     
         9 . The apparatus of  claim 1  further including means for raising and lowering said sail with respect to said mast. 
     
     
         10 . The apparatus of  claim 1  wherein said sail is constructed of an air permeable material. 
     
     
         11 . The apparatus of  claim 1  wherein said sail and said boom are selectively removably secured to said mast so that a flag may be supported on said mast when said sail and said boom are removed from said mast. 
     
     
         12 . The apparatus of  claim 1  wherein said sail and said boom are selectively removably secured to said mast so that an advertising member may be supported on said mast when said sail and said mast are removed from said mast. 
     
     
         13 . The apparatus of  claim 1  wherein said mast is comprised of a plurality of mast sections. 
     
     
         14 . In combination:
 a residential or commercial area in which shade is desired;   said area including a supporting surface;   a mast support associated with a supporting surface;   an upstanding mast having upper and lower ends;   said lower end of said mast being selectively secured to said mast support;   an elongated, horizontally disposed boom having inner and outer ends;   said inner end of said boom being secured to said mast closely adjacent said lower end thereof;   a flexible, vertically disposed, generally triangularly-shaped sail, having a generally horizontally disposed foot portion with inner and outer ends, a vertically disposed luft portion, having upper and lower ends, extending upwardly from the inner end of said foot portion, and a leech portion extending downwardly and outwardly from said upper end of said luft portion to said outer end of said foot portion;   said foot portion of said sail being secured to said boom whereby said foot portion of said sail is positioned closely adjacent the supporting surface;   said upper end of said luft portion of said sail being secured to said mast adjacent said upper end thereof;   said boom being horizontally rotatably movable between various positions to enable said sail to be positioned in various shading positions.   
     
     
         15 . The combination of  claim 14  wherein said mast is rotatably secured, about a vertical axis to said mast support and said boom is fixed to said mast for rotation therewith. 
     
     
         16 . The combination of  claim 15  wherein said mast is selectively removably received by said mast support. 
     
     
         17 . The combination of  claim 14  wherein said mast support is embedded in said supporting surface. 
     
     
         18 . The combination of  claim 14  wherein said boom is secured in various positions by means extending between said outer end of said boom and an anchor. 
     
     
         19 . The combination of  claim 18  wherein said anchor is embedded in said supporting surface. 
     
     
         20 . The combination of  claim 14  wherein said boom is maintained in its various positions by a weight operatively connected to said outer end thereof.