Patent ID: 8215676

Claim:
A removable cartridge configured to be removably coupled to a marking assembly of a scooter, said cartridge comprising: a cartridge body comprising: a contact portion configured to generate markings on a riding surface when in frictional contact with the riding surface, at least one coupling portion configured to couple the cartridge body to a scooter marking assembly, the coupling portion having a void defined by the cartridge body and configured to slidably receive a portion of a marking assembly; wherein the at least one coupling portion includes a resilient clip which securely couples the cartridge to the marking assembly and permits the cartridge to be selectively removed from the marking assembly, and wherein the void has a closed end, the closed end preventing the cartridge body from moving in a first direction aligned with a direction of travel of the scooter and the resilient clip preventing the cartridge body from moving in a second direction aligned with the direction of travel of the scooter opposite the first direction.