Lawn mower having flow control baffles and removable mulching baffles

CAFC
  • US 5,987,863 A
  • Filed: 08/18/1998
  • Issued: 11/23/1999
  • Est. Priority Date: 11/16/1995
  • Status: Expired due to Term
First Claim
Patent Images

1. A multiblade lawn mower, comprising:

  • a mower deck comprising a top wall, a front wall, a back wall, and first and second side walls defining a downwardly directed opening;

    each of said front wall, said back wall, and said opposite side walls having interior and exterior surfaces;

    said first side wall having a discharge opening formed therein;

    said discharge opening having rearward and forward ends;

    means operatively connected to said mower deck for moving said mower deck along the ground;

    first and second cutting blades having blade tips rotatably disposed within said mower deck;

    power means operatively connected to said cutting blades for causing the rotation of each of said cutting blades whereby the blade tip path of each of said cutting blades defines a circle;

    a first flow control baffle positioned in said mower deck which extends downwardly from the interior surface of said top wall between said cutting blades and said front wall;

    said first flow control baffle extending substantially continuously from a first location adjacent the interior surface of said second side wall to a second location adjacent the interior surface of said first side wall and adjacent the forward end of said discharge opening;

    said first flow control baffle comprising a first arcuate baffle portion, having first and second ends, which extends from the interior surface of said second side wall partially around said first cutting blade, a first elongated and substantially straight baffle portion, having first and second ends, extending from said second end of said first arcuate baffle portion, a second arcuate baffle portion, having first and second ends, which extends from said second end of said first elongated and substantially straight baffle portion partially around said second cutting blade;

    said first elongated and substantially straight baffle portion being angularly disposed with respect to the said circle defined by the blade tip path of said second cutting blade in a chord-like fashion so that the cuttings from said first cutting blade will be deflected inwardly within the said circle defined by the blade tip path of said second cutting blade;

    a second flow control baffle positioned in said mower deck which extends downwardly from the interior surface of said top wall rearwardly of said cutting blades; and

    said second flow control baffle including a plurality of semi-circular baffle portions, each of said baffle portions being positioned adjacent the blade tip path of one of said cutting blades;

    said first and second flow control baffles defining a plurality of open throat portions which are positioned between adjacent cutting blades.

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