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Class Information
Number: 74/574
Name: Machine element or mechanism >
Description:

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)	34
74/11	Power take-off	77
74/111	Mechanical movements (intermittent grip type)	9
74/16	Power tables and stands	23
74/17	Washer and wringer	2
74/17.5	Full stroke mechanism	4
74/17.8	Motion transfer through imperforate flexible seal	13
74/18	Flexible sealing diaphragm attached to moving rod and to casing	54
74/1R	Miscellaneous	8
74/2	Automatic operation or control (e.g., trips)	165
74/469	Control lever and linkage systems	131
74/5R	Gyroscopes	79
74/6	Engine starters	240
74/625	Alternate manual or power operators	278
74/640	Gearing	237
74/813R	Rotary member or shaft indexing, e.g., tool or work turret	106
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	7
74/900	Particular shift pattern	43
74/DIG.1	Hydraulic control systems automatic automotive controls	7
74/DIG.10	Polymer digest - plastic gears	113
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	32
74/DIG.5	Gas turbine with gearing	26
74/DIG.6	Transistor-electronic gearing controls	2
74/DIG.7	Indicators-sensors and meters	38
74/DIG.8	Marine control-ship transmission control means	11
74/DIG.9	Perpetual motion gimmicks	8