A three hopper charging installation for a shaft furnace includes a rotary distribution device for distributing bulk material in the furnace by rotating a distribution member about the furnace central axis and a first, a second and a third hopper arranged in parallel above the rotary distribution device and offset from the central axis. The CDNSP preferably provides the hardware, software and services required to build, deploy, operate and manage the CDN for the NCDN customer. The carriage includes a restraining mechanism adapted to releasably restrain a portion of a patient’s body to the carriage. Thus, the air supply inflates the bladder so as to provide uniform air pressure to the appendage, wherein the appendage is an arm or a leg. The array of grooves extends in the same direction as that of the nozzle array.