Power lawn mower including shortened control arms for use in deck lift system

  • US 6,438,931 B1
  • Filed: 11/17/2000
  • Issued: 08/27/2002
  • Est. Priority Date: 10/05/1999
  • Status: Expired due to Term
First Claim
Patent Images

1. A self-propelled power lawn mower comprising:

  • first and second rear drive wheels that are independently driveable so as to enable the mower to conduct approximate zero radius turns about a zero radius turning axis;

    a foot platform for supporting at least one foot of an operator of the mower, said foot platform being located at an elevation less than an elevation of a top edge of at least one of said rear drive wheels;

    a deck lift system for raising and lowering a cutter deck assembly, an engine deck, and an engine together as one unit in order to adjust a blade cutting height of the mower;

    control arms pivotally attached to at least one of the cutter deck and engine deck in order to provide lateral positioning of the cutter deck assembly and engine deck during the raising and lowering; and

    wherein said control arms are short enough in length so that pivoting of the control arms an angle Φ

    of fifteen (15) degrees either upward or downward during raising or lowering of the cutter deck assembly causes the cutter deck assembly to move a vertical distance “


    no more than about 2.5 inches.

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