Patent ID: 7661252

Claim:
A ground surface slide guide for a grass cutter, said ground surface slide guide being attachable to a lower side of a rotary blade to rotate together therewith, said ground surface slide guide comprising a resin body molded of a synthetic resin, and a metal hub integrally coupled to said resin body to rotate together therewith as an integral unit, said resin body comprising a tubular body and a f 1 ange extending upwardly and outwardly from the entire periphery of the lower end of said tubular body to cover the lower surface of said rotary blade, said hub being formed at its outer periphery with a blade retaining ring configured to be pressed against the lower surface of the rotary blade and be exposed to the upper surface of said tubular body, said tubular body being formed in its inside with a recess that opens to the lower surface of said ground surface slide guide, said hub being formed in its center with a mounting hole through which a drive shaft can extend such that said rotary blade is fixed to said drive shaft as being clamped between a blade rest and said blade retaining ring by means of a fastener located in said recess when in threaded engagement with the end of said drive shaft, wherein the tubular body has a thickness which is greater towards its lower end than at said flange, and forms a ground contact surface at its lower end, said blade retaining ring is formed with a plurality of circumferentially spaced through-holes, said metal hub is inserted into the resin body with said through-holes being filled with a resin forming said resin body so as to leave resin sites exposed to the upper surface of the blade retaining ring, and said blade retaining ring is formed on it upper surface with a circumferentially extending annular protruding rib that can be pressed against said rotary blade, and said annular protruding rib is interrupted by said resin sites.