Patent ID: 6449934
Filing Date: 2002-09-17
Classification: A01D,B60L,Y02P,Y02T

Abstract:
A self-propelled riding mower comprising:a frame supported upon a plurality of ground engaging wheels; an internal combustion motor; electrical energy generating means connected to the internal combustion motor for generating electrical energy in response to mechanical motion imparted thereto from the internal combustion motor; a plurality of reel type lawn mowers supported from the frame, the reel type lawn mowers being moveable between a raised non-operative position and a lowered operative position in which the reel type lawn mowers engage the ground, the reel mowers being driven by electric motors receiving electrical power from the electrical energy generating means; a housing enclosing the internal combustion motor and the electrical energy generating means; and a combination of passive noise abatement means and active noise abatement means for reducing noise generated within the interior of the housing, the passive noise abatement means including multiple sound abating linings, the active noise abatement means provided at a plurality of locations around the motor generator set within the housing.