Low noise producing lawn mower blade

Details Low noise producing lawn mower blade Low noise producing lawn mower blade

A - Human Necessities

01

D

56/58

A01D 34/82 (2006.01) A01D 34/73 (2006.01)

Patent

CA 1129213

LOW NOISE PRODUCING LAWN MOWER BLADE Abstract of the Disclosure A lawn mower blade includes a leading flat portion, at each of its opposite ends, sharpened to define a cutting edge and a trailing vane is joined to and is angled upwardly in trailing relationship to each flat portion. In one embodiment, the vanes are each in the form of a lift wing and perforations or holes are located in the leading flat portion ahead of the lift wing and provide air pressure relief passages. In another embodiment the vanes include lift wings and bagging paddles joined to the lift wings and including second leading flat portions to which trail- ing fins are joined. The second leading flat portion is either recessed to form a space between outer end portions of the fin and flat portion or is perforated to provide air pressure relief passages.

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