ข้อมูลสัญลักษณ์จำแนกการออกแบบผลิตภัณฑ์ระหว่างประเทศ


รหัส / code คำอธิบาย / code name Version
F04F0001080000 specially adapted for raising liquids from great depths, e.g. in wells 1
F04F0001100000 of multiple type, e.g. with two or more units in parallel (F04F0001080000 takes precedence);; 1
F04F0001120000 in series 1
F04F0001140000 adapted to pump specific liquids, e.g. corrosive or hot liquids 1
F04F0001160000 characterised by the fluid medium being suddenly pressurised, e.g. by explosion 1
F04F0001180000 the fluid medium being mixed with, or generated from, the liquid to be pumped 1
F04F0001200000 specially adapted for raising liquids from great depths, e.g. in wells 1
F04F0003000000 Pumps using negative pressure acting directly on the liquid to be pumped (siphons F04F0010000000) 1
F04F0005000000 Jet pumps, i.e. devices in which fluid flow is induced by pressure drop caused by velocity of another fluid flow (diffusion pumps F04F0009000000; combination of jet pumps with pumps of other than jet type F04B; use of jet pumps for priming or boosting non-positive-displacement pumps F04D) 1
F04F0005020000 the inducing fluid being liquid 1
F04F0005040000 displacing elastic fluids 1
F04F0005060000 of rotary type 1
F04F0005080000 the elastic fluid being entrained in a free-falling column of liquid 1
F04F0005100000 displacing liquids, e.g. containing solids, or liquids and elastic fluids 1
F04F0005120000 of multi-stage type 1