Patent ID: 8056848

Claim:
A blade assembly of a blender consists essentially of a first and a second blade ( 3 , 4 ), having an square axial hole ( 38 , 47 ) provided on each thereof; a screw ( 6 ) which passes said axial holes ( 38 , 47 ) and engages with a receiving hole ( 11 ) on a drive shaft ( 1 ); a seat ( 2 ) corresponds with said drive shaft ( 1 ); and a gear ( 5 ) provided on a bottom of the seat ( 2 ); said first blade ( 3 ) comprising a cutting edge ( 31 ) on a side and a spine ( 32 ) on an another side and said second blade ( 4 ) comprising a cutting edge ( 41 ) on a side and a spine ( 42 ) on an another side; characterized in that: said first blade ( 3 ) comprising a flat portion ( 33 ) having said axial hole ( 38 ) in a center, a wing portion ( 34 ) extended respectively from a left and right side of said flat portion ( 33 ) and a tip portion ( 35 ) extended upwardly from a distal end of each wing portion ( 34 ); each wing portion ( 34 ) is elevated by an upward first angle (Î¸ 1 ), each tip portion ( 35 ) is set perpendicular with a horizontal X-axis by a second angle (Î¸ 2 ) and an edge ( 30 ) of said flat portion ( 33 ) where connecting to said wing portion ( 34 ) is inclined by a third angle (Î¸ 3 ); said wing portion ( 34 ) is also lifted by a lifting fourth angle (Î¸ 4 ) and said tip portion ( 35 ) is inclined backwardly by a fifth angle (Î¸ 5 ); said second blade ( 4 ) comprising of a flat portion ( 43 ) having said axial hole ( 47 ) in a center and a wing portion ( 44 ) extended respectively from a left and right side of said flat portion ( 43 ); each wing portion ( 44 ) is inclined downwardly by a downward sixth angle (Î¸ 6 ) and an edge ( 40 ) of said flat portion ( 43 ) where connecting to said wing portion ( 44 ) is inclined by a seventh angle (Î¸ 7 ).