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Cross flow horizontal rotary lawn mower with airfoil blades

  • US 9,491,905 B2
  • Filed: 10/27/2014
  • Issued: 11/15/2016
  • Est. Priority Date: 02/15/2013
  • Status: Active Grant
First Claim
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1. A horizontal rotary lawn mower, comprising:

  • (a) a horizontal rotary blade assembly having a length, a diameter, and a plurality of blades, each of said plurality of blades forming an airfoil and each of said plurality of blades comprising a cutting edge and each of the plurality of blades spanning substantially the entire length of the rotary blade assembly, the horizontal rotary blade assembly comprising a plurality of blade holding elements configured to releasably hold each of the plurality of blades in an orientation such, when the horizontal rotary blade assembly is rotated at an operational speed about an axis parallel to a surface being mowed, the airfoil aspect of the plurality of blades generates an airflow sufficient to direct grass clippings;

    (b) a mower housing having a front, a back, a top surface and a bottom surface, said housing substantially surrounding at least a portion of the horizontal rotary blade assembly, said bottom surface defining an opening;

    (c) a baffle for dividing said opening into an intake and an exhaust, said intake having a width, said intake width being between 50 and 75 percent of said horizontal rotary blade assembly diameter; and

    wherein each of the plurality of blade holding elements comprises a retention slot configured to receive a blade cartridge comprising a spring biased locking mechanism.

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