Cordless twin blade lawnmower construction

A cordless electrically operated twin blade lawnmower comprising a housing;

• a plurality of wheels for supporting said housing;
• a handle for use by the operator in guiding said lawnmowers;
• a pair of rotating cutting blades mounted for rotation in a plane beneath said housing;
• a pair of electric motors, one motor being associated with each of said blades for rotating said blades upon energization of said motors;
• a battery disposed on said deck;
• an operator-controlled switch for connecting said motors to said battery;
• said housing defining a pair of opposite-handed helical convolutes extending above the forward portion of the the path of rotation of said blades and joining in a common, central discharge chute formed in said housing;
• said motors being respectively located on the center line of said helical convolutes on the upper surface of said housing so that said motors are nested compactly therein;
• said helical convolute each defining an air path above said blades, the volume of each air path being increased by an incremental amount equal to the volume of air displaced by said blade within an incremental degree of travel when operating at no. load so that air in said convolute moves at a substantially constant velocity;
• and a shroud member within said housing extending substantially around the forward-most arc of travel of each of said blades, said shroud being positioned immediately above the radial extremity of said blade paths, and an additional segment of said housing extending fowardly of said shroud and downwardly to a point below the plane of rotation of said blades.