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Lawn mower blade assembly

  • US 4,924,665 A
  • Filed: 12/19/1988
  • Issued: 05/15/1990
  • Est. Priority Date: 12/19/1988
  • Status: Expired due to Fees
First Claim
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1. An improved lawn mower blade assembly adapted to rotate in a substantially horizontal plane about a vertically-disposed motor shaft of a lawn mower comprising an enlarged circular rotor body having means for attachment to a motor shaft of a lawn mower and a smooth circular rim adapted to be spaced from a housing of a lawn mower, a plurality of spaced cutting elements projecting radially outwardly from said rim during normal rotation of said rotor body for a motor of a lawn mower, pivot means between each said element and adjacent said rim for freely mounting each said scutting element for unobstructed pivotable movement of each said element during normal rotation of said rotor body whereby uncuttable obstructions encountered by said cutting elements causes said elements to freely move upwardly and/or rearwardly about said pivot means, said elements being disposable entirely inboard of said rim when said rim is not rotating and during encounter with uncuttable obstructions, said pivot means including a plurality of spaced passageways in said rotor body and adjacent said rim thereof, each said cutting element being elongated and having opposite end portions, one of said end portions including a hook member, said hook member having a first leg and a second leg and a connecting portion therebetween, said second leg being substantially greater in length than said first leg and extending radially outwardly from said rim when said connecting portion of said hook member is disposed through respective said passageway and said rotor body is being rotated, said pivot means including said connecting portion of said hook member.

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