Patent ID: 7980975

Claim:
A removable cartridge assembly for an engine, comprising: a mounting part; one or more pulleys attached to said mounting part; and a single flexible force transmitting member comprising a single belt or chain operative to engage said two or more pulleys to form an enclosed area, wherein said force transmitting member is operative to be driven by a drive sprocket attached to the engine and located outside said enclosed area, said two or more pulleys situated within said enclosed area operating so as to urge said force transmitting member sufficiently against said drive sprocket to be driven thereby, wherein said force transmitting member is operative to drive at least one driven sprocket located outside said enclosed area, said two or more pulleys situated within said enclosed area operating so as to urge said force transmitting member sufficiently against said at least one driven sprocket to drive it thereby, and wherein the mounting part, the force transmitting member, and said two or more pulleys are removable from the engine as a unit with the drive sprocket remaining attached to the engine.