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: 187 Class Title: ELEVATORS Subclass Subclass Number Title 1 R MISCELLANEOUS 1 A .Tension equalizers 2 BUILDING MATERIAL 3 DUMB-WAITER TYPE 3.1 .With electric control or signal system 4 .Mail 5 .Locked car 6 EXTERIOR WALL 7 .Lateral movement 8 .Car brake 8.41 ROADWAY VEHICLE TYPE 8.43 .With jack superimposed on elevator 8.45 .With adjustable integral elevating unit 8.47 .With safety device 8.49 ..Locking means or additional support 8.5 ...Rack and detent (e.g., pawl and ratchet) lock 8.52 ..Wheel chocks or stops 8.54 .Convertible, "run-on" to and from "freewheel" 8.56 .Vehicle operated 8.57 ..Expansible quadrilateral bar type 8.59 .Four-poster type 8.61 .With attached floor section 8.62 .With pit closure operator 8.64 .With rotation limiting means 8.65 .With floor contacting guides 8.67 .Adaptable to vehicles of different gauge 8.69 .Gearing type elevating unit 8.71 .Lever or linkage type elevating unit 8.72 ..Expansible quadrilateral type 8.74 .Axle-engaging type 8.75 ..Adjustable 8.77 .Loading guides 9 R PORTABLE 10 .Inclined 11 .Winding drum 9 E .Extensible mast 12 INCLINED 13 .Cable-controlled brakes 14 ..Rail gripping 15 SHIFTABLE WEIGHT 16 SUPERPOSED CARS 17 MOTOR MECHANISM 18 .Lazy tongs 19 .Rack and pinion 20 .Rope drive 21 ..Hand-rope operated 22 ..Tensioning feature 23 ..Differential sheave 24 .Screw 25 ..Traveling rotary element 26 .Traveling sheave 27 .Winding drumm 100 ELECTRIC CONTROL SYSTEMS AND DEVICES 101 .Master control unit 102 ..Including redundant circuitry 103 .For door operating systems 104 ..With safety or security features 105 .For safety of passengers or protection of equipment 106 ..Under excess weight condition 107 ..During seismic or other building movement 108 .For electro-mechanical braking systems 109 ..Emergency braking 110 .For hydraulic motive power systems 111 ..With speed control 112 .For electric motive power systems 113 ..Leveling systems 114 ..Utilizing auxiliary power 115 ..Vibration and "start bump" control 116 ..With speed control 117 ...In terminal zones 118 ...Speed pattern generators 119 ...Of AC motor 120 ...Of DC motor 121 .Call registration systems 122 ..Single car controllers 123 ...For freight lifts or mine hoists 124 ..Group controllers 125 ...With automatic dispatching 126 ...With security or priority preemption 127 ...With assignment of calls to cars 128 ...With assignment of cars to zones 129 ..Floor selectors 130 .Monitoring, Signalling, and Indicating Systems 131 ..For load sensing and passenger counting 132 ..Of passenger activity 133 ..Of operating parameters 134 ..Position detectors 135 ..Status indicators 136 ...Of position 137 ...Of direction or responding car 138 ...For dispatching 139 ..Information communication systems 140 ..Alarm systems 28 CONTROL MECHANISM 29.1 .For manual control 29.2 .For hydraulic control 30 .Door actuated 31 ..Electric 32 .Landing stops 33 ..Lock 34 .Limit 35 ..Electric 36 ..Carrier actuated 37 ...Deflected rope 38 .Speed controlled 39 ..Electric 40 .Well obstruction 41 ..Electric 42 .Operator actuated 43 ..Electricc 44 ..Rope controllers 45 ...Running rope 46 .Controller locks 47 ..Door actuated 48 ...Electric 49 ...Locked door 50 ....Electric 51 DOOR MECHANISM 52 R .Motor actuated 53 ..Common motor shaft 54 ..Separate motors 52 LC ..Landing and car doors operatively coupled 55 .Flexible screens 56 .Sliding doors 57 ..Locked door 58 ..Vertical movement 59 ...Locked door 60 ...Sliding coupler 61 .Locks 62 HATCH MECHANISM 63 .Lever opener 64 .Sliding coupler 65 .Direct contact 66 .Vertically slidable hatch 67 WELL-END CUSHIONS 68 FLUID GOVERNORS 69 .Car-supported pump 70 .Counterweight 71 EMERGENCY CABLES 72 CABLE RELEASERS 73 CAR BRAKES AND CATCHES 74 .Door controlled 75 .Landing chairs 76 ..Car supported 77 .Driven catch devices 78 ..Rotating gear 79 ..Well supported 80 .Car supported 81 ..Cable controlled 82 ...Positive 83 ....Rail side 84 ....Sliding 85 ...Rail face 86 ...Rail side 87 ....Eccentric 88 ....Wedge 89 ..Speed controlled 90 ...Rail side 91 ....Vertically pivoted 92 ..Operator controlled 93 ...Rail side 94 COUNTERBALANCES 95 GUIDES 96 .Mine crossheads 97 RAILWAY-CAR LOCKS 98 WELL-OBSTRUCTION DEVICES * ****************************** * DIGESTT * ****************************** DIG 1 Safety edge