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.
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363-131 121-55A 14-.5
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Class Number: 193 Class Title: CONVEYORS, CHUTES, SKIDS, GUIDES, AND WAYS Subclass Subclass Number Title 1 MISCELLANEOUS 2 R CHUTES 3 .Loading or trimming 4 .Unloading 5 ..Vehicle wall supported 6 ..Extensible trough 7 .Fruit 8 .Mail 9 .Grain drill 10 .For rotary drum 11 .With sprayer 12 .Spiral 13 ..Switch 14 .Sectional, multiple-point discharge 15 .Vertically adjustable, bodily 16 .Horizontal and vertical swing 17 .Vertical swing 18 ..Counterweight 19 ...Varied 20 ...Valved 21 ..Valved .Horizontal swing 22 ..Swiveled sections 23 ..Multiple-point discharge 24 .Counterweight 25 R .Flexible wall 25 A ..Open-face chutes 25 E ..Individual elements 25 AC ..Ammunition chutes 25 S ..Resilient conduit or spring construction 25 FT ..Feed tracks 25 B ..Balloon or inflatable members 25 C ..Extensible, flexible chutes 27 .Zigzag 28 ..Switch .Vertical pipe 29 ..Multiple-point discharge 30 ..Telescopic 31 R .Switch 31 A ..Chute switches 32 .Retarder 33 .Wall 34 ..Vertical 2 A .Chute connections 2 B .Wall vibrators 2 C .Variable capacity troughs 2 D .Endless gravity 2 E .Cup 35 R ROLLERWAYS 36 .Switch 37 .Rollers 35 A .Abutments and brakes for roller conveyerss 35 SS .Submerging and rising 35 C .Centering and clamps (guides, generally) 35 TE .Telescoping and extending 35 F .Flexible 35 MD .Multidirectional 35 J .Joints 35 G .Gates 35 B .Biased rollers 35 S .Spiral 38 SKIDWAYS 39 .Switch 40 .Retarder 41 SKIDS 42 ROLLER JACKS 44 ORIENTER 45 .Manual or mechanical means moves article to upset 46 .Grooved or twisted chute 47 .Article upset about fixed point 48 .Article upset about movable point * ****************************** * DIGESTS * ****************************** DIG 1 Coin chute DIG 2 Indicators, safety devices and signals