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Class   218HIGH-VOLTAGE SWITCHES WITH ARC PREVENTING OR EXTINGUISHING DEVICES
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This Class 218 is considered to be an integral part of Class 200 (see the Class 200 schedule for the position of this Class in schedule hierarchy). This Class retains all pertinent definitions and class lines of Class 200.
[List of Pre Grant Publications for class 218 subclass 1][List of Patents for class 218 subclass 1]1 ARC PREVENTING OR EXTINGUISHING DEVICES
[List of Pre Grant Publications for class 218 subclass 2][List of Patents for class 218 subclass 2]2 Subclass 2 indent level is 1 Multiple break
 [List of Pre Grant Publications for class 218 subclass 3][List of Patents for class 218 subclass 3]3 Subclass 3 indent level is 2 Hybrid-type
 [List of Pre Grant Publications for class 218 subclass 4][List of Patents for class 218 subclass 4]4 Subclass 4 indent level is 2 Series connected break
 [List of Pre Grant Publications for class 218 subclass 5][List of Patents for class 218 subclass 5]5 Subclass 5 indent level is 2 Simultaneous break
 [List of Pre Grant Publications for class 218 subclass 6][List of Patents for class 218 subclass 6]6 Subclass 6 indent level is 2 Sequential break
 [List of Pre Grant Publications for class 218 subclass 7][List of Patents for class 218 subclass 7]7 Subclass 7 indent level is 2 Operating mechanism structure or arrangement
[List of Pre Grant Publications for class 218 subclass 8][List of Patents for class 218 subclass 8]8 Subclass 8 indent level is 1 Auxiliary shunt
 [List of Pre Grant Publications for class 218 subclass 9][List of Patents for class 218 subclass 9]9 Subclass 9 indent level is 2 Polyphase
 [List of Pre Grant Publications for class 218 subclass 10][List of Patents for class 218 subclass 10]10 Subclass 10 indent level is 2 Vacuum switch
 [List of Pre Grant Publications for class 218 subclass 11][List of Patents for class 218 subclass 11]11 Subclass 11 indent level is 2 Tubular shaped
 [List of Pre Grant Publications for class 218 subclass 12][List of Patents for class 218 subclass 12]12 Subclass 12 indent level is 2 Disconnect switch
 [List of Pre Grant Publications for class 218 subclass 13][List of Patents for class 218 subclass 13]13 Subclass 13 indent level is 2 Gas type
 [List of Pre Grant Publications for class 218 subclass 14][List of Patents for class 218 subclass 14]14 Subclass 14 indent level is 2 Operating mechanism structure or arrangement
 [List of Pre Grant Publications for class 218 subclass 15][List of Patents for class 218 subclass 15]15 Subclass 15 indent level is 2 Arc chute assembly
[List of Pre Grant Publications for class 218 subclass 16][List of Patents for class 218 subclass 16]16 Subclass 16 indent level is 2 Contact structure
[List of Pre Grant Publications for class 218 subclass 22][List of Patents for class 218 subclass 22]22 Subclass 22 indent level is 1 Magnetic blowout
[List of Pre Grant Publications for class 218 subclass 23][List of Patents for class 218 subclass 23]23 Subclass 23 indent level is 2 Permanent magnet
 [List of Pre Grant Publications for class 218 subclass 29][List of Patents for class 218 subclass 29]29 Subclass 29 indent level is 2 Arc Spinner
[List of Pre Grant Publications for class 218 subclass 30][List of Patents for class 218 subclass 30]30 Subclass 30 indent level is 2 Contact structure
[List of Pre Grant Publications for class 218 subclass 34][List of Patents for class 218 subclass 34]34 Subclass 34 indent level is 2 Arc chute
 [List of Pre Grant Publications for class 218 subclass 40][List of Patents for class 218 subclass 40]40 Subclass 40 indent level is 2 Arc runner (e.g., arc horn)
 [List of Pre Grant Publications for class 218 subclass 41][List of Patents for class 218 subclass 41]41 Subclass 41 indent level is 2 Barrier
 [List of Pre Grant Publications for class 218 subclass 42][List of Patents for class 218 subclass 42]42 Subclass 42 indent level is 2 Within vacuum
[List of Pre Grant Publications for class 218 subclass 43][List of Patents for class 218 subclass 43]43 Subclass 43 indent level is 1 Air-current blowout
 [List of Pre Grant Publications for class 218 subclass 44][List of Patents for class 218 subclass 44]44 Subclass 44 indent level is 2 Polyphase
 [List of Pre Grant Publications for class 218 subclass 45][List of Patents for class 218 subclass 45]45 Subclass 45 indent level is 2 Disconnect switch
[List of Pre Grant Publications for class 218 subclass 46][List of Patents for class 218 subclass 46]46 Subclass 46 indent level is 2 Arcing chamber
[List of Pre Grant Publications for class 218 subclass 48][List of Patents for class 218 subclass 48]48 Subclass 48 indent level is 2 Contact structure
[List of Pre Grant Publications for class 218 subclass 51][List of Patents for class 218 subclass 51]51 Subclass 51 indent level is 2 With gas flow means
[List of Pre Grant Publications for class 218 subclass 53][List of Patents for class 218 subclass 53]53 Subclass 53 indent level is 2 With nozzle
 [List of Pre Grant Publications for class 218 subclass 55][List of Patents for class 218 subclass 55]55 Subclass 55 indent level is 2 Grounding switch
 [List of Pre Grant Publications for class 218 subclass 56][List of Patents for class 218 subclass 56]56 Subclass 56 indent level is 2 Self extinguishing
[List of Pre Grant Publications for class 218 subclass 57][List of Patents for class 218 subclass 57]57 Subclass 57 indent level is 2 Puffer piston
[List of Pre Grant Publications for class 218 subclass 68][List of Patents for class 218 subclass 68]68 Subclass 68 indent level is 2 Sealed chamber
 [List of Pre Grant Publications for class 218 subclass 81][List of Patents for class 218 subclass 81]81 Subclass 81 indent level is 2 Arc chute
 [List of Pre Grant Publications for class 218 subclass 82][List of Patents for class 218 subclass 82]82 Subclass 82 indent level is 2 Identical units back-to-back
 [List of Pre Grant Publications for class 218 subclass 83][List of Patents for class 218 subclass 83]83 Subclass 83 indent level is 2 Recirculating systems
 [List of Pre Grant Publications for class 218 subclass 84][List of Patents for class 218 subclass 84]84 Subclass 84 indent level is 2 Operating mechanism structure or arrangement
 [List of Pre Grant Publications for class 218 subclass 85][List of Patents for class 218 subclass 85]85 Subclass 85 indent level is 2 Arc extinguishing medium
 [List of Pre Grant Publications for class 218 subclass 86][List of Patents for class 218 subclass 86]86 Subclass 86 indent level is 2 Low pressure cut-off valve means
 [List of Pre Grant Publications for class 218 subclass 87][List of Patents for class 218 subclass 87]87 Subclass 87 indent level is 2 Magnetic synchronous contacts
 [List of Pre Grant Publications for class 218 subclass 88][List of Patents for class 218 subclass 88]88 Subclass 88 indent level is 2 Control of blast valve and contacts
[List of Pre Grant Publications for class 218 subclass 89][List of Patents for class 218 subclass 89]89 Subclass 89 indent level is 1 Interposed non-conductor
 [List of Pre Grant Publications for class 218 subclass 90][List of Patents for class 218 subclass 90]90 Subclass 90 indent level is 2 Gas-evolving chamber
[List of Pre Grant Publications for class 218 subclass 91][List of Patents for class 218 subclass 91]91 Subclass 91 indent level is 2 Liquid
 [List of Pre Grant Publications for class 218 subclass 117][List of Patents for class 218 subclass 117]117 Subclass 117 indent level is 2 Solid
[List of Pre Grant Publications for class 218 subclass 118][List of Patents for class 218 subclass 118]118 Subclass 118 indent level is 1 Vacuum
[List of Pre Grant Publications for class 218 subclass 119][List of Patents for class 218 subclass 119]119 Subclass 119 indent level is 2 Polyphase
[List of Pre Grant Publications for class 218 subclass 121][List of Patents for class 218 subclass 121]121 Subclass 121 indent level is 2 Single-pole
 [List of Pre Grant Publications for class 218 subclass 139][List of Patents for class 218 subclass 139]139 Subclass 139 indent level is 2 Housing structure
 [List of Pre Grant Publications for class 218 subclass 140][List of Patents for class 218 subclass 140]140 Subclass 140 indent level is 2 Operating mechanism structure or arrangement
[List of Pre Grant Publications for class 218 subclass 141][List of Patents for class 218 subclass 141]141 Subclass 141 indent level is 2 With magnetic coil
[List of Pre Grant Publications for class 218 subclass 143][List of Patents for class 218 subclass 143]143 Subclass 143 indent level is 1 Resistance inserting
 [List of Pre Grant Publications for class 218 subclass 144][List of Patents for class 218 subclass 144]144 Subclass 144 indent level is 2 With capacitor
 [List of Pre Grant Publications for class 218 subclass 145][List of Patents for class 218 subclass 145]145 Subclass 145 indent level is 1 With capacitor
[List of Pre Grant Publications for class 218 subclass 146][List of Patents for class 218 subclass 146]146 Subclass 146 indent level is 1 Contact structure
 [List of Pre Grant Publications for class 218 subclass 147][List of Patents for class 218 subclass 147]147 Subclass 147 indent level is 2 Arc shielding means
 [List of Pre Grant Publications for class 218 subclass 148][List of Patents for class 218 subclass 148]148 Subclass 148 indent level is 1 Arc runner (e.g., arc horn)
[List of Pre Grant Publications for class 218 subclass 149][List of Patents for class 218 subclass 149]149 Subclass 149 indent level is 1 Arc chute assembly
 [List of Pre Grant Publications for class 218 subclass 150][List of Patents for class 218 subclass 150]150 Subclass 150 indent level is 2 Material
 [List of Pre Grant Publications for class 218 subclass 151][List of Patents for class 218 subclass 151]151 Subclass 151 indent level is 2 Metal plates structure
[List of Pre Grant Publications for class 218 subclass 152][List of Patents for class 218 subclass 152]152 Subclass 152 indent level is 1 Polyphase
 [List of Pre Grant Publications for class 218 subclass 153][List of Patents for class 218 subclass 153]153 Subclass 153 indent level is 2 Operating mechanism structure or arrangement
 [List of Pre Grant Publications for class 218 subclass 154][List of Patents for class 218 subclass 154]154 Subclass 154 indent level is 1 Operating mechanism structure or arrangement
[List of Pre Grant Publications for class 218 subclass 155][List of Patents for class 218 subclass 155]155 Subclass 155 indent level is 1 Housing structure
[List of Pre Grant Publications for class 218 subclass 156][List of Patents for class 218 subclass 156]156 Subclass 156 indent level is 2 Arcing chamber
 
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