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Class Information
Number: 74/424.8R
Name: Machine element or mechanism >

Sub-classes under this class:

Class Number Class Name Patents
74/ Mechanical movements 0
74/ Elements 0
74/1.5 Escapements 29
74/10R Shaft operators (radio tuner type) 38
74/11 Power take-off 95
74/111 Mechanical movements (intermittent grip type) 10
74/16 Power tables and stands 28
74/17 Washer and wringer 2
74/17.5 Full stroke mechanism 4
74/17.8 Motion transfer through imperforate flexible seal 15
74/18 Flexible sealing diaphragm attached to moving rod and to casing 55
74/1R Miscellaneous 10
74/2 Automatic operation or control (e.g., trips) 170
74/469 Control lever and linkage systems 164
74/5R Gyroscopes 89
74/6 Engine starters 266
74/625 Alternate manual or power operators 285
74/640 Gearing 300
74/813R Rotary member or shaft indexing, e.g., tool or work turret 129
74/828 Alternating-motion driven device with means during operation to adjust stroke 16
74/840 Rotary driven device adjustable during operation relative to its supporting structure 10
74/900 Particular shift pattern 45
74/DIG.1 Hydraulic control systems automatic automotive controls 8
74/DIG.10 Polymer digest - plastic gears 124
74/DIG.11 Creeper speed 3
74/DIG.12 Novikov gears 2
74/DIG.2 Miscellaneous control systems (e.g., ship propulsion, machine tools, etc.) 2
74/DIG.3 Movable van or blade torque converters 0
74/DIG.4 Magnetic gearing 33
74/DIG.5 Gas turbine with gearing 27
74/DIG.6 Transistor-electronic gearing controls 2
74/DIG.7 Indicators-sensors and meters 39
74/DIG.8 Marine control-ship transmission control means 11
74/DIG.9 Perpetual motion gimmicks 8

Patents under this class:

Patent Number Title Of Patent Date Issued

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