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US 6,438,931 B1Granted
Power lawn mower including shortened control arms for use in deck lift system
AssigneeWright Manufacturing, Inc.
InventorsJames D. Velke, William R. Wright
Life of this patent
Estimating the term…
Abstract
A self-propelled power lawn mower having a deck lift system for raising and lowering the cutter deck assembly together with the engine deck and engine as a single unit to adjust the cutting height of the mower. Control arms are short enough length so that pivoting of the control arms an angle Φ of fifteen degrees during raising or lowering of the cutter deck assembly causes the cutter deck assembly to move a vertical distance “d” of no more than about 2.5 inches.
Claims14
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 “d” no more than about 2.5 inches.
3 more elements
A power mower comprising:
- at least one drive wheel;
- an engine deck structure upon which an engine is mounted;
- a cutter deck assembly for housing one or more cutting blades for cutting grass;
- a deck lift system for raising and lowering the cutter deck assembly, the engine deck, and the engine together as a unit in order to adjust a blade cutting height of the mower;
- and
- wherein a control arm, for helping provide lateral positioning of the cutter deck assembly during the raising and lowering, is short enough in length so that pivoting of the control arm an angle Φ of fifteen (15) degrees during raising or lowering of the cutter deck assembly causes the cutter deck assembly to move a vertical distance “d” of no more than about 2.5 inches.
3 more elements
Dependencies are inferred from the claim text.