ดาวน์โหลด

ข้อมูลสัญลักษณ์จำแนกการออกแบบผลิตภัณฑ์ระหว่างประเทศ

รหัส / code คำอธิบาย / code name Version
E21B0004060000 Down-hole impacting means, e.g. hammers (percussion drill bits E21B0010360000; boring rams E21B0011020000; releasing-jars E21B0031107000) 1
E21B0004080000 impact being obtained by gravity only, e.g. with lost-motion connection 1
E21B0004100000 continuous unidirectional rotary motion of shaft or drilling pipe effecting consecutive impacts 1
E21B0004120000 Electrically operated hammers 1
E21B0004140000 Fluid operated hammers 1
E21B0004160000 Plural down-hole drives, e.g. for combined percussion and rotary drilling (E21B0004100000 takes precedence);;Drives for multi-bit drilling units 1
E21B0004180000 Anchoring or feeding in the borehole 1
E21B0004200000 combined with surface drive (E21B0004100000 takes precedence);; 1
E21B0006000000 Drives for drilling with combined rotary and percussive action (drives used in the borehole E21B0004000000; portable percussive machines with superimposed rotation B25D0016000000) 1
E21B0006020000 the rotation being continuous 1
E21B0006040000 Separate drives for percussion and rotation 1
E21B0006060000 the rotation being intermittent, e.g. obtained by a ratchet device 1
E21B0006080000 Separate drives for percussion and rotation 1
E21B0007000000 Special methods or apparatus for drilling (supports for the drilling machine, e.g. derricks or masts, E21B0015000000) 1
E21B0007020000 Drilling rigs characterised by means for land transport, e.g. skid mounting or wheel mounting (portable drilling rigs for use on underwater floors E21B0007124000) 1
จำนวนรหัสข้อมูล 15 จาก 73902