Patent ID: 7441999

Claim:
An overhead travelling carriage system comprising: an overhead travelling carriage that elevates and lowers a platform to load an article on a load port in a processing device provided below a running rail, the overhead travelling carriage running along the running rail, wherein an overhead buffer is fixed, and is provided on a side of said running rail which is opposite the processing device with respect to the running rail, so that an article placement surface is located below a bottom surface of the article on the running overhead travelling carriage, wherein the overhead travelling carriage is provided with means for laterally moving said platform to above the overhead buffer so that the article can be transferred and loaded between the overhead buffer and the load port located below the running rail, wherein a means for preventing the article from falling is provided so as to project upward from said overhead buffer, and a top portion of the fall preventing means is located slightly below a bottom surface of the article on the running overhead travelling carriage, wherein said means for preventing the article from falling comprises a fall preventing fence and a plurality of positioning pins, said fall preventing fence extending upward above said positioning pins, wherein an opening is formed in said overhead buffer so as not to block a flow of clean air blown downward from a ceiling to a floor, and wherein said overhead buffer is hung in supportive manner by two or more parallel supports from a ceiling from which said running rail is hung.