US Patent Class 74
MACHINE ELEMENT OR MECHANISM



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Current as of: June, 1999
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  DF  CLASS NOTES
1 R  DF  MISCELLANEOUS
1 SS  DF  .~ High frequency vibratory devices
1.5  DF  ESCAPEMENTS
2  DF  AUTOMATIC OPERATION OR CONTROL (E.G., TRIPS)
3  DF  .~ Speed controlled
3.2  DF  .~.~ Valve gear trips (e.g., steam engine "Corliss" type)
3.5  DF  .~ Retarded
3.52  DF  .~.~ Plural, sequential, trip actuations
3.54  DF  .~.~ Clock train
3.56  DF  .~.~.~ Winding knob trip (e.g., alarm mechanism)
4  DF  .~ Hit and miss
5 R  DF  GYROSCOPES
5.1  DF  .~ With caging or parking means
5.12  DF  .~.~ Rotor spin and cage release type
5.14  DF  .~.~ And resetting means
5.2  DF  .~ With gimbal lock preventing means
5.22  DF  .~ Combined
5.34  DF  .~ Multiple gyroscopes
5.37  DF  .~.~ With rotor drives
5.4  DF  .~ Gyroscope control
5.41  DF  .~.~ Erecting
5.42  DF  .~.~.~ By plural diverse forces
5.43  DF  .~.~.~ By jet
5.44  DF  .~.~.~ By weight
5.45  DF  .~.~.~ By friction
5.46  DF  .~.~.~ By magnetic field
5.47  DF  .~.~.~ By motor torque
5.5  DF  .~.~ Damping
5.6 R  DF  .~ With pick off
5.6 A  DF  .~.~ Optical
5.6 B  DF  .~.~ Pneumatic
5.6 C  DF  .~.~ Conducting liquid
5.6 D  DF  .~.~ Electrical
5.6 E  DF  .~.~ Electrical and magnetic
5.7  DF  .~ With rotor drive
5.8  DF  .~ Vertical gyroscopes
5.9  DF  .~ Horizontal gyroscopes
5 F  DF  .~ Flexure hinges for gyros
6  DF  ENGINE STARTERS
7 R  DF  .~ Automatic
7 A  DF  .~.~ Separate power mesher
7 B  DF  .~.~ Holders
7 C  DF  .~.~ Clutch connection
7 D  DF  .~.~ Worm and wheel
7 E  DF  .~.~ Reduction gearing
8  DF  .~ Radial meshing
9  DF  .~ Cam operated
10 R  DF  SHAFT OPERATORS (RADIO TUNER TYPE)
10.1  DF  .~ Preselected position
10.15  DF  .~.~ Step by step
10.2  DF  .~.~ Rotatable stop and projectable abutment
10.22  DF  .~.~ Digital dial type
10.27  DF  .~.~ Plural operator
10.29  DF  .~.~.~ Cam and follower
10.31  DF  .~.~.~.~ Adjustable cam
10.33  DF  .~.~.~.~.~ Sliding operator
10.35  DF  .~.~.~.~ Adjustable follower
10.37  DF  .~.~.~.~.~ Sliding operator
10.39  DF  .~.~.~ Rack and pinion
10.41  DF  .~.~ With detent or clicker
10.45  DF  .~ Plural shafts
10.5  DF  .~ Plural speed
10.52  DF  .~.~ Planetary
10.54  DF  .~.~ Separate operators
10.6  DF  .~ Cam and follower
10.7  DF  .~ Tensioned flexible operator
10.8  DF  .~ Gear drive
10.85  DF  .~.~ Worm or screw
10.9  DF  .~ Lever and linkage drive
10 A  DF  .~ Remote control
813 R  DF  ROTARY MEMBER OR SHAFT INDEXING, E.G., TOOL OR WORK TURRET
814  DF  .~ With safety device or drive disconnect
815  DF  .~ With locating point adjusting
816  DF  .~ Preselected indexed position
817  DF  .~.~ Sequential
818  DF  .~.~.~ Skip position
819  DF  .~.~.~ Held by torque
820  DF  .~.~.~ Geneva or multilated gear drive
821  DF  .~.~.~ Velocity control
822  DF  .~.~.~ Interlocked rotator and brake
823  DF  .~.~.~.~ Diverse-type brakes
824  DF  .~.~.~.~.~ With axially acting friction brake
825  DF  .~ Plural operators or input drives
826  DF  .~ With means to axially shift shaft
827  DF  .~ Single revolution input effects desired fractional output
813 C  DF  .~ Control means
813 L  DF  .~ Locking means
11  DF  POWER TAKE-OFF
12  DF  .~ Speedometer
13  DF  .~ Wheel take-off
14  DF  .~.~ Wheel bed type
15  DF  .~.~ Supported pulley
15.2  DF  .~ Plural take-off shafts
15.4  DF  .~ With independent change speed gearing
15.6  DF  .~ From shaft extension
15.63  DF  .~.~ Prime mover shaft, e.g., crank shaft
15.66  DF  .~.~ Change speed transmission shaft
15.69  DF  .~.~ Vehicle propeller shaft
15.8  DD  .~ Intermediate ends of power transmitting line
15.82  DF  .~.~ Vehicle propulsion transmitting line
15.84  DF  .~.~.~ Between prime mover shaft and transmission
15.86  DF  .~.~.~ Drive from transmission gear
15.88  DF  .~.~.~ Between transmission and propeller shaft
16  DF  POWER TABLES AND STANDS
17  DF  WASHER AND WRINGER
17.5  DF  FULL STROKE MECHANISM
17.8  DF  MOTION TRANSFER THROUGH IMPERFORATE FLEXIBLE SEAL
18  DF  FLEXIBLE SEALING DIAPHRAGM ATTACHED TO MOVING ROD AND TO CASING
18.1  DF  .~ Pivoting or nutating rod
18.2  DF  .~ Longitudinally reciprocating rod
828  DF  ALTERNATING-MOTION DRIVEN DEVICE WITH MEANS DURING OPERATION TO ADJUST STROKE
829  DF  .~ Constant length stroke with means to displace end limits
830  DF  .~.~ Cyclical displacement responsive to the alternating-motion
831  DF  .~ Stroke adjustable to zero and/or reversible in phasing
832  DF  .~.~ Plural driving means to jointly drive the driven device
833  DF  .~.~ Device driven from selected points on oscillating link
834  DF  .~.~ Driving lever with adjustable pivot point
835  DF  .~.~ Eccentric and strap drive, shiftable eccentric
836  DF  .~.~.~ Changing the extent of eccentricity
837  DF  .~.~ Crank pin drive, shiftable pin
838  DF  .~.~ Cam and follower drive
839  DF  .~.~.~ Axial-type cam (e.g., wabbler type)
840  DF  ROTARY DRIVEN DEVICE ADJUSTABLE DURING OPERATION RELATIVE TO ITS SUPPORTING STRUCTURE
841  DF  .~ Screw and nut adjusting means
842  DF  .~ Rack and pinion adjusting means
*  DD  MECHANICAL MOVEMENTS
20  DF  .~ Oscillating to reciprocating and alternating rotary
21  DF  .~ Oscillating to reciprocating and intermittent rotary
22 R  DF  .~ Rotary to reciprocating and rotary
22 A  DF  .~.~ Rotary to reciprocating or rotary
23  DF  .~ Rotary to reciprocating and alternating rotary
24  DF  .~ Rotary to reciprocating and intermittent rotary
25  DF  .~ Rotary to or from reciprocating or oscillating
26  DF  .~.~ Head motions
27  DF  .~.~ Reciprocating carriage motions
28  DF  .~.~.~ Phonograph type
29  DF  .~.~ Rack and pinion type
30  DF  .~.~.~ Shifting rack
31  DF  .~.~.~ Shiftable pinion
32  DF  .~.~.~ Segmental pinion
33  DF  .~.~.~ Alternately rotated pinion
34  DF  .~.~.~ Clutchable gears
35  DF  .~.~.~.~ Bevel
36  DF  .~.~ Overcoming dead center
37  DF  .~.~ Belt or chain carried member
38  DF  .~.~ Crank, lever, toggle, and slide
39  DF  .~.~ Crank, lazy-tong, and slide
40  DF  .~.~ Crank, pitman, lever, and slide
41  DF  .~.~.~ Pump jack type
42  DF  .~.~ Crank, pitman, and lever
43  DF  .~.~.~ Multiple levers
44  DF  .~.~ Crank, pitman, and slide
45  DF  .~.~ Crank, lever, and slide
46  DF  .~.~.~ Rack connections
47  DF  .~.~ Crank and lever
48  DF  .~.~.~ Slidable connections
49  DF  .~.~ Crank and slide
50  DF  .~.~.~ Slidable connections (e.g., scotch yoke)
51  DF  .~.~ Crank and multiple pitmans
52  DF  .~.~ Planetary gearing and slide
53  DF  .~.~ Cam, lever, and slide
54  DF  .~.~ Cam and lever
55  DF  .~.~ Cam and slide
56  DF  .~.~.~ Axial cam
57  DF  .~.~.~.~ Grooved
58  DF  .~.~.~.~.~ Multiple screw
59  DF  .~.~.~.~.~ Alternately rotated screw
60  DF  .~.~.~ Wabbler type
61  DF  .~.~ Unbalanced weights
62  DF  .~.~ Trammel-pitman
63  DF  .~ Rotary to rotary
64  DF  .~.~ Inertia or centrifugal transmitters
65  DF  .~.~ Crank, pitman, lever, and crank
66  DF  .~.~ Crank, lever, and crank
67  DF  .~.~ Crank, pitman, and crank
68  DF  .~.~ Cranks, link connected
69  DF  .~.~ Cranks, slidable connections
70  DF  .~ Rotary to alternating rotary
71  DF  .~.~ Mangle connections
72  DF  .~.~.~ Shiftable driven gear
73  DF  .~.~.~.~ Central teeth
74  DF  .~.~.~ Multilated gearing connections
75  DF  .~.~ Crank, pitman, and lever
76  DF  .~.~ Reciprocating rack connections
77  DF  .~.~.~ Crank and pitman actuator
78  DF  .~.~.~ Simple crank actuator
79  DF  .~.~ Oscillating rack connections
80  DF  .~.~.~ Mangle actuated
81  DF  .~.~.~ Crank and pitman actuator
82  DF  .~.~ Flexible connector type
83  DF  .~.~ Associated inertia devices
84 R  DF  .~ Rotary to intermittent unidirectional motion
84 S  DF  .~.~ Space machines
86  DF  .~ Rotary to gyratory
87  DF  .~.~ Unbalanced weight
88  DF  .~ Reciprocating or oscillating to intermittent unidirectional motion
89  DF  .~ Reciprocating or oscillating to or from alternating rotary
89.1  DF  .~.~ Including inertia device
89.11  DF  .~.~.~ With rack and pinion
89.12  DF  .~.~.~.~ Rectilinear rack
89.13  DF  .~.~ Including bevel gears
89.14  DF  .~.~ Including worm
89.15  DF  .~.~ Including screw and nut
89.16  DF  .~.~ Including spur gear
89.17  DF  .~.~.~ With rack
89.18  DF  .~.~.~.~ Curvilinear rack
89.19  DF  .~.~.~.~.~ With biasing means
89.2  DD  .~.~ Including flexible drive connector (e.g., belt, chain, strand, etc.)
89.21  DF  .~.~.~ With sprocket wheel
89.22  DF  .~.~.~ With pulley
96  DF  .~ Oscillating to oscillating
97.1  DF  .~.~ Snap action
97.2  DF  .~.~.~ Plate spring
98  DF  .~.~ Geared connections
99 R  DF  .~ Reciprocating to or from oscillating
100.1  DF  .~.~ Snap action
100.2  DF  .~.~.~ Plate spring
101  DF  .~.~ Compound lever and slide
102  DF  .~.~ Lever and slide
103  DF  .~.~.~ Straight line motions
104  DF  .~.~.~ Slidable connections
105  DF  .~.~.~ Link connections
106  DF  .~.~.~ Toggle transmissions
107  DF  .~.~.~ Cam connections
108  DF  .~.~.~ Flexible connections
109  DF  .~.~ Rack and pinion
99 A  DF  .~.~ Inclined ramp
110  DF  .~ Reciprocating to reciprocating
111  DF  MECHANICAL MOVEMENTS (INTERMITTENT GRIP TYPE)
112  DF  .~ Rotary to intermittent unidirectional motion
113  DF  .~.~ Automatically controlled
114  DF  .~.~.~ Speed
116  DF  .~.~ Rotary crank or eccentric drive
117  DF  .~.~.~ Adjustable
118  DF  .~.~.~ Lever transmitter
119  DF  .~.~.~.~ Adjustable leverage
120  DF  .~.~.~ Rack and pinion transmitter
121  DF  .~.~.~.~ Adjustable throw
122  DF  .~.~.~ Rotary cam drive
123  DF  .~.~.~.~ Adjustable throw
124  DF  .~.~.~.~.~ Radial cam
125  DF  .~.~.~.~ Radial cam
125.5  DF  .~.~ Intermittently engaged clutch
126  DF  .~ Oscillation or reciprocation to intermittent unidirectional motion
127  DF  .~.~ Screw and nut devices
128  DF  .~.~ Slide actuator
129  DF  .~.~.~ Multiple acting
130  DF  .~.~ Rack actuator
131  DF  .~.~.~ Multiple acting
132  DF  .~.~.~.~ Inwardly facing racks
133  DF  .~.~.~ Oscillating
134  DF  .~.~.~.~ Multiple acting
135  DF  .~.~.~.~.~ Inwardly facing racks
*  DD  .~.~ Strap actuator
136  DF  .~.~.~ Multiple acting
137  DF  .~.~.~.~ Spring or weight return
138  DF  .~.~.~ Single acting
139  DF  .~.~.~.~ Engine starter type
140  DF  .~.~.~.~.~ Spring or weight return
141  DF  .~.~.~.~ Spring or weight return
141.5  DF  .~.~ Lever actuator
142  DF  .~.~.~ Rotary driven element
143  DF  .~.~.~.~ Multiple acting
144  DF  .~ Grip units and features
145  DF  .~.~ Compound movement handle
146  DF  .~.~.~ Reversible
147  DF  .~.~.~ Transverse pivots
148  DF  .~.~ Gripper releasing devices
149  DF  .~.~.~ Power pawl lifter
150  DF  .~.~.~.~ Automatic
151  DF  .~.~.~.~.~ Idle stroke
152  DF  .~.~.~.~.~.~ Cooperating holding pawl
153  DF  .~.~.~.~.~ Power stroke
154  DF  .~.~.~.~ Cooperating holding pawl
155  DF  .~.~.~ Holding pawl lifter
156  DF  .~.~ Gripper mountings, lever
157  DF  .~.~.~ Reversible
158  DF  .~.~.~ Multiple acting
159  DF  .~.~.~.~ Single ratchet or clutch
160  DF  .~.~ Gripper mountings, slide
161  DF  .~.~.~ Multiple acting
162  DF  .~.~ Grip features
163  DF  .~.~.~ Driving band
164  DF  .~.~.~.~ Clamping
165  DF  .~.~.~ Driven band and gripper
166  DF  .~.~.~.~ Positive grip
167  DF  .~.~.~ Driving ratchet-bar or rack
168  DF  .~.~.~.~ Multiple acting
169  DF  .~.~.~ Driven ratchet-bar and power dog
625  DF  ALTERNATE MANUAL OR POWER OPERATORS
640  DF  GEARING
650  DF  .~ Nonplanetary gearing differential type (e.g., gearless differentials)
655  DF  .~ Single gearing unit includes fluid drive
661  DF  .~ Plural prime movers selectively coupled to common output
664  DF  .~ Plural power paths from prime mover
665 R  DF  .~ Plural power paths to and/or from gearing
670  DF  .~.~ Alternate input connections single hand crank
718  DF  .~.~ Fluid drive divides or combines alternate paths
720  DF  .~.~ One path includes fluid drive
721  DF  .~.~ Friction-type gearing
724  DF  .~.~ Worm-type gearing
665 A  DF  .~.~ Single driven plural drives
665 B  DF  .~.~.~ Parallel
665 C  DF  .~.~.~ Nonparallel
665 D  DF  .~.~.~ Aligned
665 E  DF  .~.~.~ Parallel and aligned
665 F  DF  .~.~ Single drive plural driven
665 G  DF  .~.~.~ Parallel
665 GA  DF  .~.~.~.~ Spur
665 GB  DF  .~.~.~.~ Bevel
665 GC  DF  .~.~.~.~ Spur and bevel
665 GD  DF  .~.~.~.~ Helical
665 GE  DF  .~.~.~.~ Belt or chain
665 H  DF  .~.~.~ Nonparallel
665 S  DF  .~.~.~ Aligned
665 T  DF  .~.~.~.~ Vehicle
665 K  DF  .~.~.~ Concentric
665 L  DF  .~.~ Plural drivers plural driven
665 M  DF  .~.~.~ Bevel
665 N  DF  .~.~.~ Spur
665 Q  DF  .~.~ Alternate drivers and driven
665 P  DF  .~.~ Miscellaneous (plural power paths)
730.1  DF  .~ With fluid drive
731.1  DF  .~.~ Condition responsive control
732.1  DF  .~.~ With one or more controllers for gearing, fluid drive, or clutch
733.1  DF  .~.~.~ With interrelated controls
745  DF  .~ In series plural interchangeably locked nonplanetary units
810.1  DF  .~ Reversal of direction of power flow changes power transmission to alternate path
810.2  DF  .~.~ Input and output exchange functions
216.3  DF  .~ Toothed gear and recirculated unconnected elements
318  DF  .~ Alternating rotary or continuous
319  DF  .~ Alternating rotary
320  DF  .~.~ Progressive
321  DF  .~.~ Shiftable and/or slidable gears
322  DF  .~.~ Clutchable gears
323  DF  .~.~.~ On single driven member
324  DF  .~.~.~ On single driving member
325  DF  .~ Interchangeably locked
329  DF  .~.~ Disconnectable counter shaft
330  DF  .~.~ Multiple concentric clutch shafts
331  DF  .~.~ Plurality of counter shafts
332  DF  .~.~ Internal-external gears
333  DF  .~.~ Combined gear and clutch
334  DF  .~.~.~ Preselector
335  DF  .~.~ Control mechanism
*  DD  .~.~.~ Automatic
336 R  DF  .~.~.~.~ Speed responsive
336.5  DF  .~.~.~.~.~ Governor
336 B  DF  .~.~.~.~.~ With belt gearing
337  DF  .~.~.~.~ Torque responsive
337.5  DF  .~.~.~ Cam operated
339  DF  .~.~ Meshing assisters
340  DF  .~.~.~ Double clutch and interposed transmission
*  DD  .~.~ Longitudinally slidable
*  DD  .~.~.~ Multiple spur gears
341  DF  .~.~.~.~ With tumbler gear
342  DF  .~.~.~.~ Selective
343  DF  .~.~.~.~.~ Direct clutch and drive
344  DF  .~.~.~.~ Progressive
345  DF  .~.~.~.~.~ Direct clutch and drive
346  DF  .~.~.~.~ Fluid operated
347  DF  .~.~.~ Multiple bevel gears
*  DD  .~.~.~ Single spur gear
348  DF  .~.~.~.~ Tumbler and cone
349  DF  .~.~.~.~.~ Multiple cone
350  DF  .~.~.~ Single bevel gear
351  DF  .~.~.~ Pin or crown gears
352  DF  .~.~ Laterally slidable gears
353  DF  .~.~.~ Rotary carriage
354  DF  .~.~.~ Swinging carriage
355  DF  .~.~ Single forward and reverse speeds
*  DD  .~.~ Slidable keys or clutches
356  DF  .~.~.~ Alternative clutch shaft
*  DD  .~.~.~ Multiple clutch shafts
357  DF  .~.~.~.~ Progressive
358  DF  .~.~.~.~.~ Keys simultaneously slidable
359  DF  .~.~.~.~ Selective
360  DF  .~.~.~.~ Multiple forward and reverse
361  DF  .~.~.~.~ Single forward and reverse
*  DD  .~.~.~ Single clutch shaft
*  DD  .~.~.~.~ Progressive
362  DF  .~.~.~.~.~ Multiple key
363  DF  .~.~.~.~.~.~ Spur
364  DF  .~.~.~.~.~.~.~ Fluid operated
365  DF  .~.~.~.~.~.~.~ Electrically operated
366  DF  .~.~.~.~.~ Single key
368  DF  .~.~.~.~.~.~ Clutch and ratchet
369  DF  .~.~.~.~.~.~ Spur gears
370  DF  .~.~.~.~.~.~.~ Intermediate clutch
371  DF  .~.~.~.~.~.~.~ Sliding clutch carrier
372  DF  .~.~.~.~.~.~.~ Sliding clutch operator
373  DF  .~.~.~.~ Selective
374  DF  .~.~.~.~.~ Multiple key
375  DF  .~.~.~.~.~.~ Spur gears
376  DF  .~.~.~.~ Single speed forward and reverse
377  DF  .~.~.~.~.~ Spur gears
378  DF  .~.~.~.~.~ Bevel gears
379  DF  .~.~.~.~.~ Bevel and idler gears
380  DF  .~ Pivotally supported
381  DF  .~.~ Windmill turntable
383  DF  .~.~ Screw
384  DF  .~.~ Spur
385  DF  .~.~ Bevel
386  DF  .~.~.~ Wheel type
387  DF  .~.~.~ Wringer type
388 R  DF  .~ Follow-up mechanism
388 PS  DF  .~.~ Power steering
390  DF  .~ Eccentric driving shaft and axle
391  DF  .~ Central driving shaft in axle
392  DF  .~ Parallel shafts, adjustable gear mesh
393  DF  .~ Varying speed ratio
395  DF  .~ Adjustable
396  DF  .~.~ Relative movable axes
397  DF  .~.~.~ Parallel shafts
398  DF  .~.~.~ Automatic control
399  DF  .~.~.~.~ Parallel shafts
400  DF  .~.~ Fixed axes
401  DF  .~.~.~ Parallel shafts
402  DF  .~.~.~ Automatic control
403  DF  .~.~.~.~ Parallel shafts
404  DF  .~ Reversing means
404.5  DF  .~.~ Governor control
405  DF  .~ Disconnecting means
406  DF  .~ Displaceable elements
409  DF  .~ Backlash take-up
410  DF  .~ Pressure distributing
411  DF  .~ Yieldability in gear trains
411.5  DF  .~ With brake means for gearing
412 R  DF  .~ Directly cooperating gears
413  DF  .~.~ Parallel axes or shafts
414  DF  .~.~.~ External type
415  DF  .~.~.~.~ Pin teeth
416  DF  .~.~ Intersecting axes
417  DF  .~.~.~ Bevel gear type
422  DF  .~.~ Rack and pinion
420  DF  .~.~ Spur and bevel
421 R  DF  .~.~ Spur
421 A  DF  .~.~.~ Motor and gearing
423  DF  .~.~ Bevel
424  DF  .~.~.~ Motor vehicle drive
424.5  DF  .~.~ Spiral
424.6  DF  .~.~.~ Driven rack or shaft
424.7  DF  .~.~.~ Screw
424.8 R  DF  .~.~.~ Screw and nut
424.8 A  DF  .~.~.~.~ Split nut
424.8 B  DF  .~.~.~.~ Differential nut
424.8 C  DF  .~.~.~.~ Planetary
424.8 VA  DF  .~.~.~.~ Valve actuators
424.8 VZ  DF  .~.~.~.~ Variable impedance
424.8 NA  DF  .~.~.~.~ Nonrecirculating balls
425  DF  .~.~.~ Worm
425.5  DF  .~.~.~.~ Variable speed
426  DF  .~.~.~.~ Intermittent motion
427  DF  .~.~.~.~ Distribution of pressure
412 TA  DF  .~.~ Torque actuated safety devices
431  DF  .~ Gear and rotary bodies
432  DF  .~.~ Laterally-spaced wheels
433  DF  .~.~ Radially-spaced wheels
434  DF  .~ Rotary bodies
435  DF  .~.~ Mutilated
436  DF  .~.~ Geneva
437  DF  .~.~ Irregular teeth and bodies
438  DF  .~.~ External and internal teeth
439  DF  .~.~ Sectional
440  DF  .~.~.~ Backlash take-up
441  DF  .~.~.~.~ Screw and nut
443  DF  .~.~.~ Sound deadening
444  DF  .~.~.~ Differential disks
445  DF  .~.~.~ Multiple disks
446  DF  .~.~.~ Separate rim
447  DF  .~.~.~.~ Detachable
448  DF  .~.~.~ Segmental rim
449  DF  .~.~.~ Sheet metal
450  DF  .~.~.~ Diametrically split
451  DF  .~.~.~ Shaft-admitting insert
457  DF  .~ Teeth
458  DF  .~.~ Worm and helical
459  DF  .~.~.~ Nuts
459.5  DF  .~.~ Bevel
460  DF  .~.~ Spur
461  DF  .~.~.~ Yieldable
462  DF  .~.~.~ Form
464  DF  .~.~.~.~ Antifriction
465  DF  .~.~.~.~.~ Roller
466  DF  .~.~.~.~ Twisted
467  DF  .~ Lubrication
468  DF  .~.~ Teeth
469  DF  CONTROL LEVER AND LINKAGE SYSTEMS
470  DF  .~ Resilient connections
471 R  DF  .~ Multiple controlled elements
473.1  DF  .~.~ Transmission control
473.11  DF  .~.~.~ Fluid actuator
473.12  DF  .~.~.~ Electrical actuator
473.13  DF  .~.~.~ Occupant propelled vehicle
473.14  DF  .~.~.~.~ Transmission controlled by flexible cable
473.15  DF  .~.~.~ Transmission controlled by flexible cable
473.16  DF  .~.~.~ Foot operated
473.17  DF  .~.~.~.~ Multiple foot-operated controls
473.18  DF  .~.~.~ Control convertible between automatic and manual operation
473.19  DF  .~.~.~ Control of plural mechanisms (e.g., control of transmission and control of 4 - wheel drive)
473.2  DF  .~.~.~.~ Separate control levers
473.21  DF  .~.~.~ Restriction of shift, gear selection, or gear engagement
473.22  DF  .~.~.~.~ Prevention of reverse shift
473.23  DF  .~.~.~.~ Separate actuator to disengage restrictor
473.24  DF  .~.~.~.~ Shift element interlock
473.25  DF  .~.~.~.~.~ With detent, recess, notch, or groove
473.26  DF  .~.~.~.~.~ Resiliently biased interlock
473.27  DF  .~.~.~.~ Spherical restrictor
473.28  DF  .~.~.~.~ Resiliently biased restrictor
473.29  DF  .~.~.~ having vibration damper
473.3  DF  .~.~.~ Manually operated selector (e.g., remotely controlled device, lever, push button, rotary dial, etc.)
473.31  DF  .~.~.~.~ Control lever on steering column
473.32  DF  .~.~.~.~.~ Control lever movable through plural planes
473.33  DF  .~.~.~.~ Control lever movable through plural planes
473.34  DF  .~.~.~.~.~ Spherical mount (e.g., ball and socket)
473.35  DF  .~.~.~.~.~.~ Resiliently biased control lever
473.36  DF  .~.~.~ Particular element (e.g., shift fork, template, etc.)
473.37  DF  .~.~.~.~ Shift fork structure
478  DF  .~.~ Foot operated
478.5  DF  .~.~.~ Offset extension
471 XY  DF  .~.~ Control moves in two planes
479.01  DF  .~ Multiple controlling elements for single controlled element
480 R  DF  .~.~ Interconnected
481  DF  .~.~.~ Hand and foot
482  DF  .~.~.~.~ Accelerator
480 B  DF  .~.~.~ Marine
483 R  DF  .~.~ Interlocked
483 PB  DF  .~.~.~ Push button
483 K  DF  .~.~.~ Rod blocks actuation of rotary member
484 R  DF  .~.~ Steering and controls assemblies
485  DF  .~.~.~ Rotary control shaft
486  DF  .~.~.~ Reciprocating control elements
487  DF  .~.~.~.~ Flexible
488  DF  .~.~.~.~ Handle bar type
489  DF  .~.~.~.~.~ Flexible control element
484 H  DF  .~.~.~ With horn control
490  DF  .~.~ Antirattling elements
490.01  DF  .~.~ Robotic arm
490.02  DF  .~.~.~ Including power cable or connector
490.03  DF  .~.~.~ Including electric motor
490.04  DF  .~.~.~ Including flaccid drive element
490.05  DF  .~.~.~ Joint between elements
490.06  DF  .~.~.~.~ Wrist
490.07  DF  .~.~ Power elements as controlling elements
490.08  DF  .~.~.~ Planar surface with orthogonal movement and rotation
490.09  DF  .~.~.~ Planar surface with orthogonal movement only
490.1  DF  .~.~.~ Pair of power elements
490.11  DF  .~.~ Power and manual controlling elements
490.12  DF  .~.~ Manual controlling elements
490.13  DF  .~.~.~ Planar surface with orthogonal movement or rotation
490.14  DF  .~.~.~ Levers
490.15  DF  .~.~.~.~ Pair of levers
491  DF  .~ Hand operated
492  DF  .~.~ Steering posts
493  DF  .~.~.~ Adjustable
494  DF  .~.~.~ Auxiliary operators
495  DF  .~.~.~ Position controllers
496  DF  .~.~.~ Motion translating mechanism
497  DF  .~.~.~.~ Cam type
498  DF  .~.~.~.~ Gear type
499  DF  .~.~.~.~.~ Screw and nut
500  DF  .~.~.~.~.~ Worm
500.5  DF  .~.~ Flexible transmitter (e.g., Bowden cable)
501.5 R  DF  .~.~.~ Constant tension sustaining
501.5 H  DF  .~.~.~.~ Hydraulic control
501.6  DF  .~.~.~ And hand operator
502  DF  .~.~.~.~ Slidable
502.1  DF  .~.~.~.~ For moving a mirror
502.2  DF  .~.~.~.~ Single rotatable lever (e.g., for bicycle brake or derailleur)
502.3  DF  .~.~.~ Including rolling antifriction elements
502.4  DF  .~.~.~ And sheath support, connector, or anchor
502.5  DF  .~.~.~ Specific cable or sheath structure
502.6  DF  .~.~.~ Specific cable connector or guide
503  DF  .~.~ Sliding rod
504  DF  .~.~ Rotatable rod, shaft, or post
505  DF  .~.~.~ Gear, drum, and cable
506  DF  .~.~.~ Drum and cable
507  DF  .~.~.~ Gear
508  DF  .~.~.~.~ Variable ratio
509  DF  .~.~.~.~ Screw and nut
510  DF  .~.~.~ Adjustable
511 R  DF  .~.~.~ Mountings
511 A  DF  .~.~.~.~ Antenna
512  DF  .~ Foot operated
513  DF  .~.~ Accelerator
514  DF  .~.~ Signal
515 R  DF  .~ Knee operated
515 E  DF  .~.~ Elbow
516  DF  .~ Variable output force
517  DF  .~.~ Flexible
518  DF  .~.~ Variable input leverage
*  DD  .~ Elements
519  DF  .~.~ Levers
520  DF  .~.~.~ Toggle
521  DF  .~.~.~.~ Lazy tongs
522  DF  .~.~.~ Adjustable
522.5  DF  .~.~.~ Swing posts
523  DF  .~.~.~ Hand
524  DF  .~.~.~.~ Jointed
525  DF  .~.~.~.~ Adjustable
526  DF  .~.~.~ Stops
527  DF  .~.~ Detents
528  DF  .~.~.~ Hand crank
529  DF  .~.~.~ Interrelated lever release
530  DF  .~.~.~ Gear
531  DF  .~.~.~ Friction
532  DF  .~.~.~ Lever engaging
533  DF  .~.~.~ Lever engaging rack
534  DF  .~.~.~.~ Pivoted
535  DF  .~.~.~.~ Lever carried pawl
536  DF  .~.~.~.~ Handle release
537  DF  .~.~.~.~ Finger lever release
538  DF  .~.~.~.~.~ Slidable
539  DF  .~.~.~.~ Pedal controlled
540  DF  .~.~.~ Lever carried rack
541  DF  .~.~.~.~ Pivoted
542  DF  .~.~.~.~ Pedal controlled
543  DF  .~.~ Handles
544  DF  .~.~.~ Extension
545  DF  .~.~.~ Hand crank
546  DF  .~.~.~.~ Extensible
547  DF  .~.~.~.~ Collapsible
548  DF  .~.~.~ Shaft connections
550  DF  .~.~.~.~ Engine starter type
551  DF  .~.~.~.~.~ Holders
551.1  DF  .~.~.~ Handle bars
551.2  DF  .~.~.~.~ Spring biased or supported
551.3  DF  .~.~.~.~ Folding or adjustable
551.4  DF  .~.~.~.~.~ Sectional
551.5  DF  .~.~.~.~.~.~ Simultaneously movable
551.6  DF  .~.~.~.~.~ Continuous
551.7  DF  .~.~.~.~.~.~ With handle latch
551.8  DF  .~.~.~.~ Attachments and accessories
551.9  DF  .~.~.~.~ Handholds and grips
552  DF  .~.~.~ Hand wheels
553  DF  .~.~.~.~ Knob or dial
554  DF  .~.~.~.~ Slidable
555  DF  .~.~.~.~ Pivoted
556  DF  .~.~.~.~.~ Releasable
557  DF  .~.~.~.~ Handles
558  DF  .~.~.~.~ Rim grips and covers
558.5  DF  .~.~.~ Caps and covers
559  DF  .~.~ Rocker arms
560  DF  .~.~ Pedals
561  DF  .~.~.~ Treadles
562  DF  .~.~.~ Extension
562.5  DF  .~.~.~.~ Offset
563  DF  .~.~.~ Pads and covers
564  DF  .~.~ Foot rests
565  DF  .~.~ Controller checks
566  DF  .~.~ Slot closers and lever guards
*  DD  ELEMENTS
567  DF  .~ Cams
568 R  DF  .~.~ Adjustable
568 FS  DF  .~.~.~ Flexible strip
568 M  DF  .~.~.~ Memory devices
568 T  DF  .~.~.~ Timer devices
569  DF  .~.~ Follower
570  DF  .~ Eccentrics and straps
571 R  DF  .~.~ Adjustable
571 L  DF  .~.~.~ Radially adjusted
571 M  DF  .~.~.~ Rotatably adjusted
572  DF  .~ Flywheels and rotors
573 R  DF  .~.~ With balancing means
573 F  DF  .~.~.~ Fluid balancing means
574  DF  .~.~ With vibration damping means
575  DF  .~ Pawls and ratchets
576  DF  .~.~ Noiseless
577 R  DF  .~.~ Pivoted pawls
577 S  DF  .~.~.~ Single tooth
577 SF  DF  .~.~.~ Flexible single tooth
577 M  DF  .~.~.~ Multiple tooth
578  DF  .~.~ Sliding pawls
579 R  DF  .~ Pitmans and connecting rods
580  DF  .~.~ Radial
581  DF  .~.~ Yieldable
582  DF  .~.~.~ Longitudinal springs
583  DF  .~.~.~ Fluid cushion
584  DF  .~.~.~ Automatic release
585  DF  .~.~.~.~ Toggle link type
586  DF  .~.~ Longitudinally adjustable
587  DF  .~.~ Hollow rod, lubricated
588  DF  .~.~ Sheet metal type
589  DF  .~.~ Counterbalanced
590  DF  .~.~.~ Weight type
591  DF  .~.~.~.~ Rotating
592  DF  .~.~.~ Spring
593  DF  .~.~ Section coupled
594  DF  .~.~ Bearings, adjustable
579 E  DF  .~.~ Engine type
579 F  DF  .~.~ Idler arm
594.1  DF  .~ Cranks and pedals
594.2  DF  .~.~ With attached gear
594.3  DF  .~.~ Variable
594.4  DF  .~.~ Pedals
594.5  DF  .~.~.~ Counterbalanced
594.6  DF  .~.~.~ With toe or shoe clips
594.7  DF  .~.~.~ Adjustable or folding
595  DF  .~ Cranks and wrist pins
596  DF  .~.~ Multiple throw
597  DF  .~.~.~ Sectional
598  DF  .~.~ Sectional
599  DF  .~.~ Yieldable
600  DF  .~.~ Adjustable
601  DF  .~.~.~ Automatically
602  DF  .~.~ Variable
603  DF  .~.~ Counterbalanced
604  DF  .~.~.~ Vibration dampers
605  DF  .~.~ Lubricated
606 R  DF  .~ Gear casings
607  DF  .~.~ Axle and torque tubes
606 A  DF  .~.~ Cooling
608  DF  .~ Guards
609  DF  .~.~ For rotary member
612  DF  .~ Guard mechanisms
613  DF  .~.~ Automatic
614  DF  .~.~.~ Oscillating member actuator
615  DF  .~.~.~ Reciprocating member actuator
616  DF  .~.~ Operator controlled
617  DF  .~.~ Set screw
*********************************
CROSS REFERENCE ART COLLECTION
*********************************
900  DF  PARTICULAR SHIFT PATTERN
*********************************
FOREIGN ART COLLECTIONS
*********************************
FOR 100  DF  .~.~ Transmission control (74/473 R)
FOR 101  DF  .~.~.~ Foot operated (74/474)
FOR 102  DF  .~.~.~ With detent mechanism (74/475)
FOR 103  DF  .~.~.~ With reverse lockout (74/476)
FOR 104  DF  .~.~.~ With interlocked elements (74/477)
FOR 105  DD  .~.~.~ Pivot mounting (74/473 P)
FOR 106  DD  .~.~.~ Near steering wheel (74/473 SW)
******************************
DIGESTS
******************************
DIG 1  DD  Hydraulic control systems automatic automotive controls
DIG 2  DD  Miscellaneous control systems (e.g., ship propulsion, machine tools, etc.)
DIG 3  DD  Movable van or blade torque converters
DIG 4  DD  Magnetic gearing
DIG 5  DD  Gas turbine with gearing
DIG 6  DD  Transistor-electronic gearing controls
DIG 7  DD  Indicators-sensors and meters
DIG 8  DD  Marine control-ship transmission control means
DIG 9  DD  Perpetual motion gimmicks
DIG 10  DD  Polymer digest - plastic gears
DIG 11  DD  Creeper speed
DIG 12  DD  Novikov gears