What follows are the subclasses from one class of the Manual of Classification for US patents. As you scroll through the list and encounter a class/subclass of interest, you can jump back to the top and retrieve patent titles by entering the class/subclass in the box below.
Enter a class/subclass code here to get a list of patent titles. Use
any of the following forms:
363-131 121-55A 14-.5
that is, no embedded spaces, class and subclass seperated by a dash, and any
subclass letters capitalized. Currently Design Patent titles (those in the
classes of the form Dxx.yy) are not retreivable.
Class Number: 213 Class Title: RAILWAY DRAFT APPLIANCES Subclass Subclass Number Title 1 R MISCELLANEOUS 1 A .One-shot shock absorber 1.3 COMBINED COUPLER AND ELECTRIC CONNECTOR 1.6 .With additional circuit-making or breaking means 2 LOCOMOTIVE AND TENDER 3 .Locomotive to tender 4 .Movable to inoperative position 5 ..With drawbar-lifting means 6 .Pocket type 7 CUSHIONED 8 .Continuous 9 .Combined with car end buffer 10 .Single center sill 11 .Bolster-positioned 12 .Radially movable 13 ..Vertically 14 ...Combined horizontally 15 ..Truck-controlled 16 ..Hand-controlling devices 17 ...Combined uncoupling levers 18 ..Swing head 19 ...Centering devices 20 ..Centering devices 21 ...Drawbar carriers 22 .Combined spring and friction 23 ..Preliminary spring 24 ...Shoes and wedges with casings 25 ..Springs only on draft 26 ..Differential spring compression 27 ...Rotating friction elements 28 ..Rotating friction elements 29 ..Interengaging friction springs 30 ...Plate springs 31 ..Friction casings 32 R ...Shoes and wedges 33 ....Interleaved friction plates 34 ....Compound wedges 32 A ....Plural spring 32 B ....Retaining means on draft gear barrel 32 C ....Draft gear assembly 35 ..Central friction post 36 ...Shoes and wedges 37 ..Transversely movable friction element 38 ...Transverse springs 39 ....Inwardly movable 40 R .Springs 41 ..Varying resistance 42 ..Tension 43 ..Fluid 44 ..Multiple 45 ...Tandem arrangement 46 R ....Separate springs for buff and draftt 46 A .....Draft rod through cushion 47 ....With yokes 48 .....Opposed overlying plungers 49 ...Parallel arrangement 40 D ..Interlocking parts 40 S ..Special 50 .Cooperating parts fixed to car 50.5 ..Draft key retainers 51 ..Draft sills 52 ...Parallel-spring arrangement 53 ...Tandem-spring arrangement 54 ..Cheek plates 55 ...Tandem-spring arrangement 56 ..Individual-follower stops 57 ...Combined bolster casting 58 ..Striking block 59 ...Resilient 60 ...Combined drawbar carrier 61 ..Drawbar carrier 62 R .Drawbars 63 ..Extensions 64 ..Connections to cushion 65 ...Friction casings 66 ...Links 67 R ...Yokes 68 ....Longitudinally divided 69 ....Drawbar connections 70 .....Hooded 71 ......Pivotal 72 .....Pivotal 67 A ....Special 62 A ..Rotatable couplers 73 CONTINUOUS 74 RADIALLY MOVABLE 75 R COUPLINGS 76 .Combined car and air train line 77 .Counterpart 78 ..Link or bar type 79 ...Selective coupling element 80 ....Beveled link and swing catch 81 .....Arrowhead type 82 ....Hook and link 83 .....Bails 84 ....Hook and link combined 85 ....Headed link and shouldered slot 86 ....Pin and link 87 .....Swing pin 88 ...Hook and catch 89 ....Pivoted hooks 90 .....Horizontally swinging 91 ...Beveled link and swing catch 92 ....Arrowhead type 93 ...Hook and link 94 ....Bails 95 ...Hook and link combined 96 ...Headed link and shouldered slot 97 ....Rotary head or link 98 ...Pin and linkk 99 ....Swing pins 100 R ..Interengaging hooks and knuckles 101 ...Arrowhead type 102 ....Plural 103 ...Transversely sliding bill 104 ...Horizontally swinging 105 ....Miller hooks 106 .....Movable bill 107 ....Star wheel 108 ....Plural 109 ....Janney type 110 .....Always in coupling position 111 .....Auxiliary and emergency 112 ......Transition construction and devices 113 .....Plural-tailed knuckles 114 .....Pinless knuckles 115 .....Knuckle openers 116 ......Springs 117 ......Gravity 118 .......Knuckles 119 ......Combined locks 120 .......Vertically movable and horizontally rotatable 121 .......Vertically movable and tilting 122 .......Vertically sliding 123 ........Pivotally-attached member 124 .......Pivoted or rotatable 125 ......Lock-operated 126 .......Vertically sliding locks 127 ........And rearwardly swinging 128 ........Vertically swinging levers 129 .......Vertically swinging locks 130 .......Horizontally sliding locks 131 ......Lock-operating 132 .......Continuing movement 133 ........Horizontally rotating shaft 134 ........Pivoted levers 135 ........Sliding 136 .........Vertically 137 .......Separate movement 138 ........Rotating and sliding 139 .....Gravity locks 140 ......Knuckle-attached 141 ......Vertically swinging 142 .......With lock set and anticreep 143 .......With lock set 144 .......With anticreep 145 ......Vertically sliding 146 .......With lock set and anticreep 147 .......With lock set 148 .......With anticreep 149 .....Horizontally sliding locks 150 .....Horizontally swinging locks 151 .....Contour 152 .....Knuckle and head interengagement 153 .....Vertical disengagement prevention 154 .....Guard-arm construction 155 .....Knuckle and knuckle pins 156 .....Knuckle-pin bottom retainerss 157 .....Detachable ears 158 .....Lifter and lock-hole closures 159 .....Uncoupling devices 160 ......Emergency 161 ......Selectively movable 162 ......Pull rods, chains or ropes 163 ......Interengaging levers 164 .......Vertically swinging 165 ......Vertically swinging 166 ......Rotating horizontal shafts 167 .......Journaled to coupler head 168 .......Directly connected to lock 169 .......Horizontal link to lock 170 .......Vertical link to lock 171 ......Brackets 172 ...Vertically swinging 173 ....Vertical hook 174 ...Rotating 100 W ...Willison coupler .Link or bar type 175 ..Hook and catch 176 ..Beveled link and wing catch 177 ...Arrowhead type 178 ..Hook and link 179 ...Pivoted hook 180 ....Multiple 181 ...Bails 182 ..Headed link and shouldered slot 183 ...Pivoted head 184 ...Rotating head or link 185 ..Beveled link and sliding catch 186 ...Arrowhead type 187 ..Beveled link and fixed catch 188 ..Pin and open link 189 ...Automatic pin moving 190 ....Swing pin 191 .....To coupling position 192 ...Pin supports 193 ....Tilting pin 194 ....Gravity 195 .....Combined link lifters and supports 196 ......Rollers 197 .....Pivoted latches 198 ......Pin-attached 199 ......Stirrups 200 ....Spring 201 .....Combined link lifters and supports 202 .....Horizontally sliding 203 ......Link-operated 204 .....Pivoted 205 ...Link lifters and supports 206 ....Opposed car 207 ....Levers 208 ..Links 209 ...End opening 210 ...Handled 211 .Uncoupling devices 212 ..Central controll 213 ..Operable from car top or side 214 ...Rotating vertical shaft 215 ..Operable from car top only 216 ..Rotating vertical shafts 217 ..Flexible 218 ..Vertically swinging lever 219 ..Rotating horizontal shafts 75 A .Operated by trackside mechanism 75 B .Mine car 75 TC .Toy train 75 D .Magnetic 75 GT .Glass table 220 CAR-END BUMPERS OR BUFFERS 221 .Resilient 222 ..Car platform type 223 ..Fluid 224 SIDE-TRACK PUSH RODS