Patent ID: 8210272

Claim:
An implement comprising a ground engaging wheel means supporting a chassis, a pair of operating handles at one end of said chassis, at least one cutting blade at the other end of said chassis, and an engine power unit supported by said chassis and arranged to rotate said at least one cutting blade via a gearbox located intermediate said engine power unit and said at least one cutting blade, the components of said implement other than said operating handles, said cutting blade(s), said wheel means and said engine power unit being contained within an exterior housing having an exterior surface, said chassis being of monocoque construction and being longitudinally split into two complementary portions which together form an interior housing for said gearbox, each of said complementary portions having an interior surface and an exterior surface, the exterior surfaces of said two complementary portions together forming substantially the entirety of the exterior surface of said exterior housing of the implement, and said gearbox having a sealed interior formed entirely from opposed parts of the interior surfaces of said complementary portions.