US Patent 7757870 Rack apparatus for treatment processes

A rack apparatus (100) for facilitating workpiece treatment includes a frame member (20) and a plurality of rack members (30). The rack members are detachably mounted on the frame member, wherein each rack member, in turn, includes a plurality of rack poles (305) that are detachably mounted thereon. When workpieces of large dimension or complicated shape require hanging/mounting on the rack apparatus, some rack poles and rack members can be disassembled, and thus the rack apparatus can provide more space to contain/carry these workpieces.