E21C

Technology

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Description

MINING OR QUARRYING

Subclasses

SubclassTitle
25/00 Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam (dislodging machines with slitting means E21C 27/02, E21C 27/1, E21C 27/18)
25/02 Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam (dislodging machines with slitting means E21C 27/02, E21C 27/1, E21C 27/18) Machines slitting solely by one or more percussive tools moved through the seam
25/04 Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam (dislodging machines with slitting means E21C 27/02, E21C 27/1, E21C 27/18) Machines slitting solely by one or more percussive tools moved through the seam Cutting crowns or other tools (percussion drill bits E21B 10/36)
25/06 Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam (dislodging machines with slitting means E21C 27/02, E21C 27/1, E21C 27/18) Machines slitting solely by one or more cutting rods or cutting drums which rotate, move through the seam, and may or may not reciprocate
25/08 Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam (dislodging machines with slitting means E21C 27/02, E21C 27/1, E21C 27/18) Machines slitting solely by one or more cutting rods or cutting drums which rotate, move through the seam, and may or may not reciprocate Mountings for the rods or drums
25/10 Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam (dislodging machines with slitting means E21C 27/02, E21C 27/1, E21C 27/18) Machines slitting solely by one or more cutting rods or cutting drums which rotate, move through the seam, and may or may not reciprocate Rods; Drums
25/14 Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam (dislodging machines with slitting means E21C 27/02, E21C 27/1, E21C 27/18) Machines slitting solely by one or more cutting rods or cutting drums which rotate, move through the seam, and may or may not reciprocate with equipment for cleaning the slit (associated with cutter chain machines E21C 25/5)
25/16 Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam (dislodging machines with slitting means E21C 27/02, E21C 27/1, E21C 27/18) Machines slitting solely by one or more rotating saws, cutting discs, or wheels
25/18 Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam (dislodging machines with slitting means E21C 27/02, E21C 27/1, E21C 27/18) Machines slitting solely by one or more rotating saws, cutting discs, or wheels Saws; Discs; Wheels
25/20 Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam (dislodging machines with slitting means E21C 27/02, E21C 27/1, E21C 27/18) Machines slitting solely by one or more reciprocating sawing implements or reciprocating cutter chains; Shaker conveyers with cutting means
25/22 Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam (dislodging machines with slitting means E21C 27/02, E21C 27/1, E21C 27/18) Machines slitting solely by one or more cutter chains moving unidirectionally along jibs
25/24 Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam (dislodging machines with slitting means E21C 27/02, E21C 27/1, E21C 27/18) Machines slitting solely by one or more cutter chains moving unidirectionally along jibs with flat jibs only
25/26 Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam (dislodging machines with slitting means E21C 27/02, E21C 27/1, E21C 27/18) Machines slitting solely by one or more cutter chains moving unidirectionally along jibs with curved jibs only
25/28 Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam (dislodging machines with slitting means E21C 27/02, E21C 27/1, E21C 27/18) Machines slitting solely by one or more cutter chains moving unidirectionally along jibs Chains or chain guides
25/30 Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam (dislodging machines with slitting means E21C 27/02, E21C 27/1, E21C 27/18) Machines slitting solely by one or more cutter chains moving unidirectionally along jibs Chains or chain guides Chain guides
25/32 Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam (dislodging machines with slitting means E21C 27/02, E21C 27/1, E21C 27/18) Machines slitting solely by one or more cutter chains moving unidirectionally along jibs Chains or chain guides Chain guides specially adapted for curved jibs
25/34 Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam (dislodging machines with slitting means E21C 27/02, E21C 27/1, E21C 27/18) Machines slitting solely by one or more cutter chains moving unidirectionally along jibs Chains or chain guides Chains
25/36 Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam (dislodging machines with slitting means E21C 27/02, E21C 27/1, E21C 27/18) Machines slitting solely by one or more cutter chains moving unidirectionally along jibs Chains or chain guides Chains Couplings for links
25/40 Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam (dislodging machines with slitting means E21C 27/02, E21C 27/1, E21C 27/18) Machines slitting solely by one or more cutter chains moving unidirectionally along jibs Chains or chain guides Chains having links with integrally formed picks
25/50 Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam (dislodging machines with slitting means E21C 27/02, E21C 27/1, E21C 27/18) Machines slitting solely by one or more cutter chains moving unidirectionally along jibs with equipment for cleaning the slit (associated with rotary-rod or rotary-drum machines E21C 25/14)

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