US Patent 9475175 Grinding wheel arbor

A skate blade sharpening system includes a blade retention mechanism that holds a skate blade to be sharpened, and a rotating shaft configured to have a grinding wheel mounted on it, where the grinding wheel contacts the skate blade during sharpening. An arbor on the rotating shaft is of a heat-conducting material and has a heat-conducting mating with the grinding wheel when the grinding wheel is mounted on the rotating shaft. The arbor includes a set of vanes contributing to fan-like air flow about the arbor and grinding wheel for convective heat dissipation during the sharpening operation.