Lawn mower blade assembly with replaceable cutters
View Patent ↗lawn mower blade assembly including a blade having an elongated section, and extending plates, each extending plate extending from the elongated section. Each of the extending plates includes connecting holes. The lawn mower blade assembly includes a plurality of cutters, each cutter having an interfacing section with cutter connecting holes configured to align with the connecting holes. Each cutter includes a cutter raised section extending from the interfacing section and has a cutter cutting edge. The cutters are removably attachable to the extending plates using fasteners that pass through the cutter connecting holes and the connecting holes. The blade assembly allows individual cutters to be removed and replaced without removing the entire blade assembly from the lawn mower spindle shaft.
1 . A lawn mower blade assembly, comprising:
a blade comprising an elongated section with a central hole configured to receive a spindle shaft;
a first slant section extending from said elongated section toward a first end;
a second slant section extending from said elongated section toward a second end;
a first extending plate connected to said elongated section through said first slant section and positioned at said first end;
a second extending plate connected to said elongated section through said second slant section and positioned at said second end, wherein said first extending plate comprises first connecting holes and a first cutting edge, and said second extending plate comprises second connecting holes and a second cutting edge;
a pair of cutters, each cutter comprising an interfacing section having cutter connecting holes configured to align with said first connecting holes or said second connecting holes,
a cutter raised section extending from said interfacing section,
a cutter cutting edge positioned on said cutter raised section, and a cutter slant section transitioning between said interfacing section and said elongated section; and
a plurality of fasteners configured to removably secure said cutters to said first extending plate and said second extending plate through said aligned holes, wherein said cutters are positioned above said first extending plate and said second extending plate when attached.
2 . The lawn mower blade assembly of claim 1 , wherein said elongated section further comprises sectional holes positioned on both sides of said central hole.
3 . The lawn mower blade assembly of claim 1 , wherein said cutter raised section is angled relative to said interfacing section to create a three-dimensional cutting profile.
4 . The lawn mower blade assembly of claim 3 , wherein said cutter cutting edge is positioned along a leading edge of said cutter raised section relative to a direction of rotation during operation.
5 . The lawn mower blade assembly of claim 1 , wherein said cutter slant section is configured to sit above said first slant section or said second slant section when said respective cutter is attached to said first extending plate or said second extending plate.
6 . The lawn mower blade assembly of claim 1 , wherein said cutter cutting edge of each cutter is positioned to operate in coordination with said first cutting edge or said second cutting edge of said respective extending plate.
7 . The lawn mower blade assembly of claim 1 , wherein said fasteners comprise bolts and nuts.
8 . The lawn mower blade assembly of claim 1 , wherein said cutter slant section is angled between 30 to 65 degrees relative to said interfacing section.
9 . A method of providing a lawn mower blade assembly, said method comprising the steps of:
providing a blade comprising an elongated section with a central hole configured to receive a spindle shaft;
providing a first slant section extending from said elongated section toward a first end;
providing a second slant section extending from said elongated section toward a second end;
providing a first extending plate connected to said elongated section through said first slant section and positioned at said first end;
providing a second extending plate connected to said elongated section through said second slant section and positioned at said second end, said first extending plate comprising first connecting holes and a first cutting edge, and said second extending plate comprising second connecting holes and a second cutting edge;
providing a plurality of cutters, each cutter comprising an interfacing section having cutter connecting holes configured to align with said first connecting holes or said second connecting holes, a cutter raised section extending from said interfacing section and comprising a cutter cutting edge that is positioned on said cutter raised section, and a cutter slant section transitioning between said interfacing section and said elongated section; and
removably connecting said cutters to said first extending plate and said second extending plate using fasteners that pass through said cutter connecting holes and said first and second connecting holes, such that said cutters are positioned above said first extending plate and said second extending plate when attached and said connecting holes.