| Class Number |
Class Name |
No. of Patents |
| 318/383 |
"anti-braking" or braking-prevention means |
9 |
| 318/244 |
Alternating current commutating motors |
38 |
| 318/245 |
Universal or a.c.-d.c. motors |
126 |
| 318/494 |
Armature (or primary) circuit control |
20 |
| 318/519 |
By armature or primary circuit-making and/or breaking |
15 |
| 318/520 |
Electromagnetically actuated |
7 |
| 318/505 |
By means to space-discharge devices |
5 |
| 318/507 |
Having discharge-control means (e.g., grids) |
5 |
| 318/506 |
Plural, diverse or diversely connected or controlled space-discharge devices |
7 |
| 318/501 |
By shunting armature or primary winding |
11 |
| 318/503 |
Frequency or pulsation control |
20 |
| 318/508 |
Impedance-controlled |
6 |
| 318/512 |
Inductive reactor controlled |
8 |
| 318/513 |
Having auxiliary means for saturating reactor core |
3 |
| 318/511 |
Inherently or self-variable impedance |
1 |
| 318/509 |
Plural, diverse or diversely controlled impedances |
7 |
| 318/510 |
Including both reactor and condenser |
9 |
| 318/514 |
Resistor-controlled |
10 |
| 318/515 |
Having short-circuiting means |
1 |
| 318/516 |
Short-circuited step-by-step |
4 |
| 318/500 |
Plural sources of voltage (including counter e.m.f. cells) |
69 |
| 318/495 |
Plural, diverse or diversely controlled, armature or primary windings |
13 |
| 318/498 |
Energized or controlled in predetermined sequence |
12 |
| 318/496 |
Polyphase windings |
8 |
| 318/497 |
Series-parallel |
7 |
| 318/499 |
Wound or energized in magnetic opposition |
5 |
| 318/502 |
Variable length or tapped armature winding |
4 |
| 318/504 |
Voltage control |
40 |
| 318/445 |
Automatic and/or with time-delay means (e.g., automatic starting and/or stopping) |
299 |
| 318/448 |
Anti-hunting |
48 |
| 318/478 |
Electrical conditions in circuit other than controlled motor circuit |
32 |
| 318/479 |
Voltage |
48 |
| 318/482 |
Level of fluid or granular material |
35 |
| 318/483 |
Moisture content or wetness |
223 |
| 318/474 |
Motor load, armature or primary or secondary circuit current |
62 |
| 318/476 |
In excess of a predetermined magnitude |
42 |
| 318/477 |
Intentionally increased load |
7 |
| 318/475 |
Mechanical-type detector (e.g., by yielding spring devices) |
29 |
| 318/466 |
Movement, position, or limit-of-travel |
688 |
| 318/468 |
Limit-of-travel control means |
408 |
| 318/469 |
Overloading limit-of-travel-type control means |
214 |
| 318/470 |
Magnitude of movement or revolutions |
59 |
| 318/467 |
Plural sensing means for determining plural positions or plural limits-of travel |
230 |
| 318/447 |
Nonresponsive or less responsive for limited periods |
40 |
| 318/452 |
Plural, diverse conditions or with time-delay means |
54 |
| 318/453 |
Electrical condition |
53 |
| 318/454 |
Plural, diverse electrical conditions |
12 |
| 318/455 |
Voltage and current (e.g., watts) |
29 |
| 318/481 |
Pressure in a fluid or granular material |
47 |
| 318/480 |
Radiant energy |
232 |
| 318/456 |
Rate-of-change of a condition |
29 |
| 318/458 |
Electrical condition |
13 |
| 318/457 |
Interia-type detector |
7 |
| 318/489 |
Responsive to direction, inclination or angular position of bodies |
62 |
| 318/488 |
Responsive to stress in body or material |
43 |
| 318/471 |
Responsive to thermal conditions |
314 |
| 318/473 |
In or about the motor being controlled |
148 |
| 318/472 |
Of motor control means |
82 |
| 318/460 |
Sound, supersonic vibration or mechanical vibration |
69 |
| 318/461 |
Speed or rate-of-movement |
146 |
| 318/462 |
Centrifugal-type detector |
5 |
| 318/465 |
In excess of a predetermined valve |
31 |
| 318/463 |
Tachometer-type detector |
38 |
| 318/464 |
Electric generator tachometer |
18 |
| 318/459 |
Terminal voltage or counter-electromotive force of controlled motor |
131 |
| 318/484 |
Time or with time-delay means |
141 |
| 318/485 |
Dash-pot or other mechanical delay means |
7 |
| 318/487 |
Electromagnetic or inductive time-delay means |
11 |
| 318/486 |
Pilot- or servo-motors |
3 |
| 318/446 |
With nonautomatic control means (e.g., manual) |
107 |
| 318/449 |
With respect to a fixed standard, master or reference device |
36 |
| 318/450 |
Electrical detector |
26 |
| 318/451 |
Mechanically vibrating device as reference device (e.g., tuning fork) |
0 |
| 318/136 |
Auxiliary means for producing mechanical starting or accelerating torque |
10 |
| 318/137 |
By auxiliary motor |
7 |
| 318/139 |
Battery-fed motor systems |
952 |
| 318/362 |
Braking |
147 |
| 318/373 |
"plugging" or application of reverse power to motor |
68 |
| 318/374 |
Energy flow interrupted when motor stops |
21 |
| 318/363 |
"spotting" or adjustment of braking controller during coasting |
12 |
| 318/364 |
Automatic and/or with time-delay means |
38 |
| 318/366 |
Condition of motor or driven device |
33 |
| 318/368 |
Armature or primary circuit voltage or terminal or counter e.m.f. voltage |
48 |
| 318/367 |
Armature or primary current |
15 |
| 318/369 |
Speed, acceleration, movement or position of motor or driven device |
77 |
| 318/365 |
Plural diverse conditions or with time delay |
20 |
| 318/382 |
By auxiliary electric generator or by magnetic attraction or repulsion devices |
15 |
| 318/375 |
Dynamic braking |
220 |
| 318/379 |
Locally closed armature circuit |
59 |
| 318/380 |
Closed through impedance or the like |
75 |
| 318/381 |
With field or secondary circuit control |
38 |
| 318/376 |
Regenerative |
317 |
| 318/377 |
With additional source of e.m.f. |
25 |
| 318/378 |
In series with armature or primary circuit |
12 |
| 318/372 |
Friction braking |
66 |
| 318/370 |
Plural, diverse or diversely controlled braking means |
60 |
| 318/371 |
Including both friction braking "plugging" and/or dynamic braking |
62 |
| 318/432 |
Constant motor current, load and/or torque control |
1028 |
| 318/433 |
Control of motor load or device driven |
212 |
| 318/162 |
Control by patterns or other predetermined schedule means |
32 |
| 318/163 |
Motor running-speed control |
17 |
| 318/164 |
Cyclically varying or repeated speed schedules |
4 |
| 318/493 |
Control of both armature (or primary) circuit and field (or secondary) circuit |
50 |
| 318/491 |
Control of both motor circuit and motor structure |
20 |
| 318/1 |
Electric motor with nonmotor driving means (e.g., axle drive, manual drive) |
9 |
| 318/2 |
Manual driving means |
35 |
| 318/521 |
Field or secondary circuit control |
14 |
| 318/536 |
By field circuit making and/or breaking |
5 |
| 318/537 |
Intermittently operated |
4 |
| 318/532 |
By means of space-discharge device in field circuit |
9 |
| 318/533 |
Impedance-controlled |
6 |
| 318/534 |
Plural, diverse or diversely connected or controlled field circuit impedances |
3 |
| 318/535 |
Wheatstone bridge |
0 |
| 318/523 |
Plural, diverse or diversely connected or controlled field windings |
15 |
| 318/524 |
Convertible number-of-poles type (e.g., 4-pole or 6-pole) |
7 |
| 318/525 |
Differentially wound or energized windings |
3 |
| 318/529 |
Selectively energized |
9 |
| 318/527 |
Series field winding |
5 |
| 318/526 |
Series-parallel |
7 |
| 318/528 |
With means to short circuit a field winding |
4 |
| 318/530 |
Plural, diverse or diversely connected or controlled sources of field circuit voltage |
12 |
| 318/531 |
Variable length or tapped field winding |
5 |
| 318/140 |
Generator-fed motor systems having generator control |
125 |
| 318/148 |
Alternating-current-motor system |
35 |
| 318/141 |
Automatic generator control and/or with time-delay means |
28 |
| 318/144 |
Armature or primary current of motor |
8 |
| 318/142 |
Responsive to diverse conditions or with time-delay means |
5 |
| 318/143 |
Plural electrical conditions |
17 |
| 318/146 |
Speed of motor or driven device |
36 |
| 318/147 |
Speed or frequency of generator or its drive means |
19 |
| 318/145 |
Terminal voltage or counter e.m.f. of motor |
19 |
| 318/151 |
Control of both the generator and the circuit to the motor |
39 |
| 318/152 |
With motor control |
15 |
| 318/153 |
Control of both the generator and the motor |
34 |
| 318/154 |
Control of excitation (field) circuit of both |
24 |
| 318/158 |
Generator field circuit control |
27 |
| 318/157 |
Generator speed control |
16 |
| 318/156 |
Plural, diverse or diversely actuated, generator control means |
6 |
| 318/150 |
With flywheel on generator or on motor |
44 |
| 318/149 |
With plural, diverse or diversely controlled generators |
12 |
| 318/440 |
Having plural, diverse or diversely controlled sources |
48 |
| 318/441 |
A.c. and d.c. |
23 |
| 318/442 |
Different voltages |
54 |
| 318/159 |
Having rotor element biased against rotation |
16 |
| 318/160 |
By resilient biasing means (e.g., spring) |
13 |
| 318/253 |
Homopolar or uniform field motors |
3 |
| 318/114 |
Impact, mechanical shock, or vibration-producing motors |
137 |
| 318/727 |
Induction motor systems |
342 |
| 318/757 |
Braking |
70 |
| 318/759 |
Dynamic braking |
78 |
| 318/760 |
Direct current primary winding braking circuit |
28 |
| 318/761 |
Rotating rotor controls braking current in primary winding |
9 |
| 318/762 |
With a.c. to d.c. conversion circuit |
74 |
| 318/765 |
Eddy current braking circuits |
5 |
| 318/763 |
Reversal of power to primary winding |
20 |
| 318/764 |
Three phase power reversal |
7 |
| 318/758 |
With diverse operation |
40 |
| 318/729 |
Power-factor control |
199 |
| 318/766 |
Primary and secondary circuits |
10 |
| 318/767 |
Primary circuit control |
77 |
| 318/806 |
Condition responsive |
333 |
| 318/771 |
Delta-wye, plural wye, or plural delta connected primary windings |
72 |
| 318/770 |
Dual voltage motors |
9 |
| 318/807 |
Frequency control |
543 |
| 318/808 |
With voltage magnitude control |
297 |
| 318/809 |
With voltage phase angle control |
299 |
| 318/810 |
With voltage pulse time control |
168 |
| 318/811 |
Pluse width modulation or chopping |
853 |
| 318/772 |
Plural speed |
91 |
| 318/773 |
Pole changing |
61 |
| 318/777 |
Separate primary running winding for each pole number, alternately energized |
15 |
| 318/774 |
Single phase motor |
23 |
| 318/776 |
Entire primary running winding energized for each running speed |
22 |
| 318/775 |
Separate primary running winding for each pole number, alternately energized |
28 |
| 318/798 |
Responsive to motor condition |
518 |
| 318/805 |
Responsive to motor voltage |
333 |
| 318/799 |
Responsive to speed or rotation phase angle |
340 |
| 318/804 |
With controlled magnetic reactance |
66 |
| 318/800 |
With controlled power conversion |
392 |
| 318/801 |
Including inverter |
647 |
| 318/802 |
Responsive to an additional condition |
269 |
| 318/803 |
With controlled a.c. to d.c. circuit in inverter supply |
310 |
| 318/778 |
Starting control |
260 |
| 318/781 |
Operating from a single phase source |
59 |
| 318/794 |
Capacitor run motor with different capacitance at starting |
40 |
| 318/795 |
With plural capacitors |
29 |
| 318/784 |
Impedance for reducing current during starting operation |
11 |
| 318/797 |
Phase splitting using stator winding mutual inductance or saturable winding |
18 |
| 318/796 |
Saturable winding in capacitor run motor circuit |
6 |
| 318/785 |
Start winding removed during running operation |
70 |
| 318/793 |
By centrifugal switch |
31 |
| 318/789 |
By electromagnetic switch |
14 |
| 318/790 |
With relay coil in series with main winding |
13 |
| 318/786 |
By electronic switch |
96 |
| 318/787 |
With transformer for sensing the run winding current |
19 |
| 318/788 |
With variable temperature coefficient resistor in switch control circuit |
33 |
| 318/791 |
By thermal switch |
15 |
| 318/792 |
With variable temperature coefficient impedance element |
15 |
| 318/782 |
With protective features |
74 |
| 318/783 |
Thermal starting and thermal overload protection |
104 |
| 318/780 |
Three phase motor with variable transformer to initially adjust voltage to motor windings |
12 |
| 318/779 |
With speed control |
108 |
| 318/768 |
Three phase motor operated from single phase source |
48 |
| 318/769 |
With dynamoelectric converter |
3 |
| 318/812 |
Voltage control |
290 |
| 318/816 |
Single phase, split phase motors |
11 |
| 318/817 |
With capacitor |
50 |
| 318/814 |
With impedance control |
55 |
| 318/815 |
Saturable reactor |
50 |
| 318/813 |
With transformer |
44 |
| 318/728 |
Repulsion start |
4 |
| 318/739 |
Reversing |
34 |
| 318/749 |
Operating from a single phase source |
21 |
| 318/750 |
Shaded pole motor |
6 |
| 318/751 |
Split phase motor with capacitor interchangeably connected in series with either primary winding |
39 |
| 318/752 |
With controlled electronic device to provide the series connection |
11 |
| 318/753 |
With de-energizable start winding |
14 |
| 318/755 |
Automatic current reversal on start winding |
6 |
| 318/754 |
With separate winding or winding portion energized for each direction of rotation |
16 |
| 318/747 |
Two phase motor |
30 |
| 318/748 |
With plural primary windings or winding portions having common connection |
14 |
| 318/756 |
With controlled electronic switch for phase reversal |
14 |
| 318/745 |
With controlled saturable reactor in primary circuit |
4 |
| 318/746 |
Two phase motor |
1 |
| 318/740 |
With diverse motor operation |
10 |
| 318/741 |
With braking |
12 |
| 318/742 |
Electromagnetic brakes |
6 |
| 318/743 |
Generator action |
6 |
| 318/744 |
Plugging |
8 |
| 318/818 |
Secondary circuit control |
14 |
| 318/820 |
Closed secondary member or member portion with means to change electrical characteristics thereof |
9 |
| 318/821 |
Impedance control of secondary circuit |
23 |
| 318/829 |
By manual operation |
2 |
| 318/822 |
Responsive to motor condition |
22 |
| 318/827 |
Frequency of secondary current |
10 |
| 318/825 |
Induction motor current |
30 |
| 318/826 |
Primary motor current |
4 |
| 318/823 |
Rotor speed or position responsive |
29 |
| 318/824 |
Centrifugal force of rotor controls secondary circuit impedance |
4 |
| 318/828 |
Secondary voltage |
4 |
| 318/819 |
Open secondary member or portion thereof with means to open or close the circuit thereto |
8 |
| 318/737 |
Self-cascaded motor windings |
12 |
| 318/738 |
With commutated winding |
9 |
| 318/730 |
With plural separately movable rotors |
8 |
| 318/830 |
With relatively movable cooperating motor parts to control energized motor |
2 |
| 318/831 |
Axially movable cooperating parts |
2 |
| 318/832 |
Dual stators, one or both angularly movable |
7 |
| 318/731 |
With voltage source connected to motor secondary |
9 |
| 318/733 |
Commutator connected to secondary winding |
2 |
| 318/732 |
Electronic device controls current in secondary circuit |
49 |
| 318/734 |
Slip rings connected to secondary winding |
4 |
| 318/735 |
Rotor shaft coupled to dynamoelectric machine |
4 |
| 318/736 |
Slip rings connected to dynamoelectric machine winding |
1 |
| 318/434 |
Limitation of motor load, current, torque or force (e.g., preventing overload) |
1079 |
| 318/135 |
Linear-movement motors |
603 |
| 318/118 |
Magnetostrictive motor |
55 |
| 318/558 |
Miscellaneous |
81 |
| 318/439 |
Motor commutation control systems |
1435 |
| 318/430 |
Motor load, armature current or force control during starting and/or stopping |
277 |
| 318/431 |
Initial, "cracking" or "starting from rest" torque control |
112 |
| 318/492 |
Motor magnetic energy dissipation |
16 |
| 318/538 |
Motor structure adjustment or control |
37 |
| 318/539 |
Both armature and field structures rotatable or adjustable |
8 |
| 318/541 |
Brush or other current-collector control |
33 |
| 318/542 |
Having movement toward or from cooperating part (e.g., brush lifted from commutator) |
11 |
| 318/540 |
Rotor element movable axially |
5 |
| 318/115 |
Motor with diverse motions (e.g., rotary and reciprocating) |
47 |
| 318/280 |
Motor-reversing |
428 |
| 318/287 |
Armature or primary circuit control |
39 |
| 318/291 |
Armature or primary current reversal |
24 |
| 318/292 |
By shifting motor brushes or selecting appropriate set of brushes |
16 |
| 318/293 |
Reversing polarity of current supplied to armature circuit |
253 |
| 318/295 |
Potentiometer-controlled |
11 |
| 318/294 |
Wheatstone bridge type |
34 |
| 318/288 |
Plural, diverse or diversely controlled armature windings |
4 |
| 318/289 |
Phase-reversal |
12 |
| 318/290 |
Selectively energized windings |
16 |
| 318/283 |
Automatic and/or with time-delay means |
192 |
| 318/285 |
Instant of, or passage or predetermined time or having time-delay means |
71 |
| 318/286 |
Movement or position of motor or driven device |
488 |
| 318/284 |
With means to delay reversing until motor substantially stops |
44 |
| 318/296 |
Field circuit control |
4 |
| 318/300 |
Field-circuit current reversed |
11 |
| 318/297 |
Plural, diverse or diversely controlled field windings |
11 |
| 318/298 |
Simultaneous energization |
2 |
| 318/299 |
With means for short-circuiting a winding |
5 |
| 318/281 |
Periodic- or intermittent-reversing |
72 |
| 318/282 |
In response to movement or position (e.g., limit of travel) of motor or driven device |
354 |
| 318/116 |
Nonmagnetic motor |
216 |
| 318/117 |
Thermoelectric motor |
15 |
| 318/436 |
Nonrunning, energized motor |
50 |
| 318/696 |
Open-loop stepping motor control systems |
1186 |
| 318/443 |
Periodic, repetitious or successive operations control of motor, including "jog" and "inch" control |
277 |
| 318/444 |
Variable periods or intervals between controlling operations |
239 |
| 318/437 |
Phasing or angular or linear positional control of movable element of the motor |
74 |
| 318/255 |
Plural diverse motor controls |
24 |
| 318/276 |
Acceleration control |
27 |
| 318/277 |
With automatic starting and/or stopping |
15 |
| 318/278 |
In response to an electrical condition |
10 |
| 318/279 |
Automatic stopping means less responsive during acceleration |
4 |
| 318/273 |
Motor braking |
40 |
| 318/274 |
With acceleration control |
15 |
| 318/275 |
With automatic starting and/or stopping |
24 |
| 318/256 |
Motor-reversing |
76 |
| 318/263 |
With acceleration control |
7 |
| 318/264 |
With automatic starting and/or stopping |
86 |
| 318/265 |
Stopping upon predetermined movement of or position of motor or driven device |
124 |
| 318/266 |
At limit-of-travel of motor or driven device |
385 |
| 318/267 |
Dual control circuits alternately energized |
30 |
| 318/261 |
With braking |
37 |
| 318/262 |
And acceleration control |
5 |
| 318/257 |
With running-speed control |
141 |
| 318/260 |
And acceleration control |
16 |
| 318/258 |
And braking |
55 |
| 318/259 |
And acceleration control |
14 |
| 318/268 |
Running-speed control |
273 |
| 318/271 |
With acceleration control |
48 |
| 318/272 |
With automatic starting and/or stopping |
52 |
| 318/269 |
With braking |
107 |
| 318/270 |
And acceleration control |
46 |
| 318/34 |
Plural, diverse or diversely controlled electric motors |
206 |
| 318/90 |
Acceleration control |
10 |
| 318/91 |
Accelerating motors in succession or selectively |
7 |
| 318/94 |
Armature or primary circuit control |
4 |
| 318/95 |
Series-parallel connections |
5 |
| 318/96 |
With armature circuit impedance |
1 |
| 318/92 |
Control of both armature (or primary) and field (or secondary) circuits |
3 |
| 318/93 |
Series-parallel connected armature or primary circuits |
3 |
| 318/97 |
Field or secondary circuit control |
2 |
| 318/86 |
Braking |
24 |
| 318/87 |
Motor used as braking generator (dynamic braking) |
35 |
| 318/88 |
Load or current division during braking |
6 |
| 318/89 |
Motor as exciter for another motor |
7 |
| 318/41 |
Having electrical synchronizing interconnections |
101 |
| 318/44 |
Between induction motor secondaries |
2 |
| 318/42 |
Between windings on auxiliary dynamo-electric machines |
6 |
| 318/43 |
D.c. or a.c. commutator motors with slip rings |
3 |
| 318/98 |
Load control |
46 |
| 318/99 |
Fixed ratio of load or current division |
18 |
| 318/100 |
By field or secondary circuit control |
6 |
| 318/45 |
Mechanically coupled in fixed ratio of movement |
38 |
| 318/48 |
Mechanically coupled in torque opposition |
19 |
| 318/46 |
Motors having unlike operating characteristics |
25 |
| 318/47 |
Synchronous and nonsynchronous motors |
12 |
| 318/40 |
Motor biased against rotation |
16 |
| 318/65 |
Motor-reversing |
38 |
| 318/49 |
Motors electrically connected in cascade or tandem |
87 |
| 318/50 |
With means for effecting other motor interconnections |
27 |
| 318/35 |
Motors with diverse motions (e.g., reciprocating and rotary motors) |
31 |
| 318/112 |
Parallel connected motors |
90 |
| 318/38 |
Plural linear-movement motors |
83 |
| 318/37 |
Plural reciprocating or oscillating motors |
23 |
| 318/51 |
Plural, diverse motor controls for different motors |
84 |
| 318/53 |
Plural, diverse motor controls |
64 |
| 318/64 |
Acceleration control |
11 |
| 318/63 |
Braking |
36 |
| 318/54 |
Motor-reversing |
50 |
| 318/58 |
And acceleration control |
2 |
| 318/57 |
And braking |
9 |
| 318/55 |
With running-speed control |
35 |
| 318/56 |
And braking |
13 |
| 318/59 |
Running-speed control |
54 |
| 318/61 |
And acceleration control |
13 |
| 318/62 |
And automatic starting and/or stopping and/or with time delay |
30 |
| 318/60 |
And braking |
33 |
| 318/105 |
Plural, diverse or diversely controlled sources of armature (or primary) supply |
35 |
| 318/106 |
Diverse sources |
24 |
| 318/107 |
A.c. and d.c. |
25 |
| 318/108 |
Different voltages |
17 |
| 318/110 |
Different frequencies |
9 |
| 318/109 |
Different voltages |
37 |
| 318/66 |
Running-speed control |
98 |
| 318/82 |
Armature or primary circuit control |
12 |
| 318/83 |
Series-parallel armature circuit connections |
10 |
| 318/67 |
Diverse speeds for different motors |
66 |
| 318/84 |
Field or secondary circuit control |
8 |
| 318/68 |
Relative motor speed control |
61 |
| 318/80 |
Armature or primary circuit control |
9 |
| 318/79 |
Control of both armature (or primary) and field (or secondary) circuits |
6 |
| 318/77 |
Controlling motor speed in response to speed of another motor |
72 |
| 318/78 |
Controlling a.c. frequency or rate of electrical impulses to other motor |
28 |
| 318/81 |
Field secondary circuit control |
3 |
| 318/69 |
With speed-difference detector |
26 |
| 318/76 |
Differential-gearing detector |
3 |
| 318/70 |
Electrical-type detectors |
6 |
| 318/72 |
Dynamoelectric machine detector |
17 |
| 318/74 |
Synchronously actuated switch detectors |
2 |
| 318/75 |
Plural switches connected in series |
5 |
| 318/73 |
Synchronously operated impedance detectors |
4 |
| 318/71 |
Voltage and/or current difference detector |
37 |
| 318/113 |
Series connected motors |
35 |
| 318/111 |
Series-parallel connected motors |
36 |
| 318/52 |
Slipping and/or racing control for electric motors |
110 |
| 318/101 |
Starting and/or stopping |
25 |
| 318/104 |
Armature (or primary) circuit control |
4 |
| 318/103 |
Selective starting and/or stopping |
41 |
| 318/102 |
Sequential or successive starting and/or stopping |
40 |
| 318/85 |
Synchronizing or phasing control |
155 |
| 318/39 |
Work and feed motors (e.g., indexing) |
95 |
| 318/17 |
Portable-mounted motor and/or portable-mounted electrical systems therefor |
56 |
| 318/560 |
Positional servo systems (e.g., servomechanisms) |
711 |
| 318/628 |
"feelback" systems |
131 |
| 318/609 |
"reset" systems (p.i.) |
296 |
| 318/610 |
With rate (p. i. d.) (e.g., reset windup prevention) |
303 |
| 318/636 |
"sampling" systems including miscellaneous "sampled data" control systems |
107 |
| 318/561 |
Adaptive or optimizing systems including "bang-bang" servos |
705 |
| 318/637 |
Analog computation |
9 |
| 318/630 |
Antibacklash systems (e.g., with unidirectional approach to balance) |
107 |
| 318/631 |
Antistatic friction features (e.g., "dither" voltage) |
29 |
| 318/600 |
Digital or numerical systems |
270 |
| 318/604 |
Analogue comparison |
41 |
| 318/605 |
Synchro or resolver (e.g., transmitter simulators) |
90 |
| 318/601 |
Digital comparison |
188 |
| 318/602 |
Commutating switch-type encoder |
138 |
| 318/603 |
Pulse-counting systems |
552 |
| 318/606 |
Frequency- or phase-modulated systems |
110 |
| 318/607 |
Frequency comparison |
60 |
| 318/608 |
Phase comparison |
187 |
| 318/626 |
Limit or end-stop control |
200 |
| 318/627 |
Secto-scanning systems |
18 |
| 318/590 |
Multiple mode systems |
93 |
| 318/596 |
Combined "on-off" and proportional control |
25 |
| 318/592 |
Fine and coarse systems |
108 |
| 318/594 |
Digital systems |
128 |
| 318/595 |
Multiple speed synchro systems |
18 |
| 318/593 |
Separate fine and coarse motors |
43 |
| 318/597 |
Slewing systems |
17 |
| 318/598 |
With a separate slewing motor |
3 |
| 318/591 |
With mode-engagement features (e.g., manual to automatic) |
62 |
| 318/625 |
Plural servomotors |
285 |
| 318/567 |
Program- or pattern-controlled systems |
509 |
| 318/569 |
Digital or numerical systems |
473 |
| 318/570 |
Contouring systems |
141 |
| 318/574 |
Multiple axes point to point systems |
129 |
| 318/571 |
With "feed-rate" control |
405 |
| 318/572 |
With "zero-offset" or tool radius correction |
166 |
| 318/573 |
With interpolating means |
261 |
| 318/575 |
Multiple axes analog systems |
70 |
| 318/578 |
Cam or template followers |
124 |
| 318/579 |
Multiple pass systems |
20 |
| 318/576 |
Nonmechanical line, seam or edge followers |
43 |
| 318/577 |
Optical or photoelectric line followers |
142 |
| 318/568.1 |
With program recording or composing means |
705 |
| 318/568.11 |
Multifunction manipulator (i.e., robot) |
646 |
| 318/568.12 |
Mobile robot |
606 |
| 318/568.17 |
With multimode control (e.g., course-fine, position-force, etc.) |
148 |
| 318/568.18 |
Including velocity control |
182 |
| 318/568.22 |
With particular compensation (e.g., gain, offset, etc.) |
236 |
| 318/568.23 |
Including program modification |
62 |
| 318/568.19 |
With particular coordinate transformation means |
114 |
| 318/568.15 |
With particular interpolation means |
134 |
| 318/568.13 |
With particular program teaching method |
258 |
| 318/568.14 |
Manual lead through |
97 |
| 318/568.16 |
With particular sensing device |
377 |
| 318/568.2 |
With plural control systems (e.g., the interaction of plural processors to control the plural joints of a single robot): |
221 |
| 318/568.21 |
Including end effector (e.g., gripping jaw, micromanipulator, etc.) |
183 |
| 318/568.24 |
With reliability enhancement means (e.g., monitoring, redundant circuits, etc.) |
85 |
| 318/568.25 |
Including display device |
59 |
| 318/599 |
Pulse-width modulated power input to motor (e.g., "duty cycle" systems) |
713 |
| 318/562 |
Time-sharing or multiplexing systems |
94 |
| 318/629 |
Unwanted harmonic or voltage component elimination quadrature rejection systems |
102 |
| 318/580 |
Vehicular guidance systems with single axis control |
116 |
| 318/584 |
Altitude or pitch control |
54 |
| 318/582 |
Celestial navigation |
11 |
| 318/587 |
Land vehicles |
480 |
| 318/583 |
Landing systems |
11 |
| 318/588 |
Marine vehicles |
79 |
| 318/589 |
Submarine and torpedo systems |
6 |
| 318/581 |
Radio-controlled |
50 |
| 318/585 |
Roll control |
25 |
| 318/586 |
Yaw control |
52 |
| 318/632 |
With compensating features |
641 |
| 318/633 |
"two-cycle error" compensation |
8 |
| 318/634 |
Temperature compensation |
62 |
| 318/638 |
With particular "error-detecting" means |
110 |
| 318/640 |
Photoelectric or optical-type measuring instruments |
353 |
| 318/639 |
Plural, diverse conditions |
12 |
| 318/651 |
With acceleration measuring instruments |
35 |
| 318/650 |
With current, voltage or electrical power measuring instruments |
65 |
| 318/644 |
With flow measuring instruments |
13 |
| 318/645 |
With fluid pressure measuring instruments |
28 |
| 318/646 |
With force or weight measuring instruments |
65 |
| 318/648 |
With inertial, direction or inclination measuring instrument |
127 |
| 318/649 |
Stable platforms |
201 |
| 318/642 |
With liquid level measuring instruments |
11 |
| 318/647 |
With magnetic field measuring instruments |
31 |
| 318/643 |
With moisture content or wetness measuring instruments |
10 |
| 318/652 |
With particular position measuring instruments |
179 |
| 318/670 |
Contact resistance |
2 |
| 318/656 |
Differential transformer systems |
23 |
| 318/658 |
"e" type transformer |
3 |
| 318/660 |
"inductosyn" systems |
32 |
| 318/659 |
"microsyn" type |
6 |
| 318/657 |
Linear differential transformer |
37 |
| 318/661 |
Resolver systems |
206 |
| 318/653 |
Magnetic transducers |
128 |
| 318/663 |
Potentiometer systems including autotransformers and wheatstone bridges |
107 |
| 318/665 |
Continuous rotation, unlimited range |
5 |
| 318/666 |
Controlled tap and slidewire |
17 |
| 318/664 |
Minor arc seeking |
10 |
| 318/667 |
With a bridge in the feedback circuit |
7 |
| 318/668 |
Recalibrating systems |
5 |
| 318/669 |
Standing wave |
2 |
| 318/654 |
Synchro control transmitter-transformer systems |
49 |
| 318/655 |
With synchro differential |
9 |
| 318/662 |
Variable capacitor systems |
59 |
| 318/641 |
With particular temperature measuring instrument |
33 |
| 318/671 |
With particular motor control system responsive to the "actuating signal" |
68 |
| 318/685 |
"step-by-step" motors in closed-loop servos |
936 |
| 318/672 |
Discontinuous or "on-off" control |
28 |
| 318/673 |
Seeking switch type |
24 |
| 318/674 |
Wheatstone bridge type |
11 |
| 318/687 |
Linear movement motors |
221 |
| 318/675 |
One transmitter or controller element follows another |
34 |
| 318/686 |
Reciprocating or oscillating motors |
18 |
| 318/688 |
Shaded pole motors |
1 |
| 318/676 |
Transmitter or controller element returned (e.g., force balance systems) |
27 |
| 318/684 |
With particular modulator or detector (e.g., choppers) |
16 |
| 318/683 |
With particular phase discriminator |
6 |
| 318/677 |
With particular servoamplifier |
35 |
| 318/678 |
Differential amplifier |
59 |
| 318/679 |
Diverse types of amplifiers in different stage |
6 |
| 318/680 |
Magnetic servoamplifiers |
4 |
| 318/682 |
Rotating amplifier (e.g., "ward leonard" control) |
2 |
| 318/681 |
Solid-state servoamplifiers |
55 |
| 318/563 |
With protective or reliability increasing features (e.g., "fail-safe" systems) |
233 |
| 318/564 |
"redundant" operating channels |
99 |
| 318/566 |
Maneuver, force, or load-limiting |
78 |
| 318/565 |
Monitoring systems |
302 |
| 318/635 |
With signal-, voltage-, or current-limiting |
52 |
| 318/611 |
With stabilizing features (e.g., anti-hunting, damping) |
259 |
| 318/615 |
By auxiliary feedback loop |
147 |
| 318/616 |
Rate feedback |
168 |
| 318/618 |
Tachometer feedback |
131 |
| 318/617 |
Variable rate feedback |
38 |
| 318/624 |
By deadband at null (e.g., threshold circuits) |
53 |
| 318/612 |
Electric braking near balance (e.g., dynamic) |
25 |
| 318/613 |
D.c. in a.c. windings |
4 |
| 318/614 |
Friction-braking near balance including magnetic or eddy current brakes |
18 |
| 318/621 |
Lead or lag networks |
83 |
| 318/622 |
A.c. networks |
9 |
| 318/623 |
Load stabilization (e.g., viscous, magnetic or friction dampers) |
75 |
| 318/620 |
Nonlinear circuits |
19 |
| 318/619 |
Variable gain bandwidth |
50 |
| 318/438 |
Power factor control of armature or line circuit |
67 |
| 318/119 |
Reciprocating or oscillating motor |
82 |
| 318/126 |
Energizing winding circuit control |
25 |
| 318/127 |
Automatic in response to predetermined position, movement or condition in or of the motor or driven device |
68 |
| 318/128 |
Noise, sound, vibration, movement or position of motor |
134 |
| 318/134 |
By circuit making and/or braking devices |
19 |
| 318/133 |
By impedance devices in energizing circuit |
5 |
| 318/129 |
By means for producing periodic electrical pulses in the energizing circuit |
39 |
| 318/130 |
Electrical oscillation or condenser charging and/or discharging circuits |
39 |
| 318/131 |
Motor or escapement-controlled means |
0 |
| 318/132 |
By space-discharge or unidirectionally conductive devices in energizing circuit |
42 |
| 318/121 |
Having means to produce a progressing or traveling motor field flux |
3 |
| 318/122 |
Plural, diverse or diversely controlled motor windings |
17 |
| 318/123 |
Polyphase or diverse or diversely controlled sources of motor supply |
10 |
| 318/124 |
A.c. and d.c. sources |
9 |
| 318/125 |
Unidirectionally conductive devices in energizing circuit |
4 |
| 318/120 |
Stopping after predetermined number of reciprocations or cycles (including single cycle) |
8 |
| 318/725 |
Repulsion motor systems |
13 |
| 318/726 |
With added motor winding or convertible to series motor |
1 |
| 318/254 |
Self-commutated impulse or reluctance motors |
2683 |
| 318/690 |
Self-synchronous type of motor |
14 |
| 318/694 |
Having commutated dynamoelectric machine transmitter |
2 |
| 318/695 |
Having commutating switch-type transmitter |
11 |
| 318/693 |
Having impedance-type transmitter |
1 |
| 318/692 |
Having induction or "selsyn" type transmitter |
5 |
| 318/691 |
With means to amplify transmitter signals |
2 |
| 318/246 |
Series motors |
32 |
| 318/249 |
Control by motor circuit impedance |
10 |
| 318/250 |
Impedance in series with field windings and in parallel to armature winding |
12 |
| 318/247 |
Convertible for nonseries motor operation |
8 |
| 318/251 |
Field circuit control |
23 |
| 318/252 |
Plural, diverse or diversely connected or controlled field coils |
16 |
| 318/248 |
With plural, diverse or diversely connected or controlled sources of e.m.f. |
13 |
| 318/138 |
Space-discharge-device commutated motor |
1487 |
| 318/16 |
Supplied or controlled by space-transmitted electromagnetic or electrostatic energy (e.g., by radio) |
232 |
| 318/700 |
Synchronous motor systems |
370 |
| 318/702 |
Antihunting or damping |
43 |
| 318/720 |
Armature winding circuits |
74 |
| 318/724 |
Having a plurality of windings or winding portions |
87 |
| 318/722 |
Having electronic power conversion circuit |
201 |
| 318/723 |
Having variable frequency supply |
164 |
| 318/721 |
Responsive to rotor shaft position or speed |
349 |
| 318/703 |
Braking |
27 |
| 318/716 |
Field winding circuits |
60 |
| 318/717 |
Responsive to a motor condition |
65 |
| 318/718 |
Induced voltage in field winding |
33 |
| 318/719 |
Speed responsive field power sources |
33 |
| 318/701 |
Hysteresis or reluctance motor systems |
518 |
| 318/704 |
Pole changing motor winding circuits |
12 |
| 318/705 |
Synchronization systems |
72 |
| 318/709 |
Having different armature voltage prior to synchronism |
7 |
| 318/706 |
With armature power removal upon failure to synchronize or loss of synchronism |
14 |
| 318/708 |
Responsive to thermal electrical element in system |
6 |
| 318/707 |
Upon failure to resynchronize |
5 |
| 318/710 |
With d.c. field removal |
6 |
| 318/711 |
With electronic control element in system |
19 |
| 318/712 |
With field excitation application |
41 |
| 318/714 |
Responsive to armature current |
37 |
| 318/715 |
Responsive to rotor speed or rotor driven member |
69 |
| 318/713 |
Responsive to slip voltage frequency in d.c. field winding |
15 |
| 318/543 |
Three-or-more-positions motor controller systems |
9 |
| 318/551 |
Knee- or foot-operated controllers |
33 |
| 318/548 |
Plural control stations |
8 |
| 318/546 |
Plural, diverse or diversely controlled controllers |
3 |
| 318/547 |
Plural control stations |
6 |
| 318/552 |
Power-actuated controllers |
4 |
| 318/555 |
Electromagnetic actuated |
7 |
| 318/557 |
Intermittent or step-by-step operation |
3 |
| 318/556 |
Reciprocating or oscillating electromagnetic means |
8 |
| 318/553 |
Separately actuated controller contacts |
4 |
| 318/554 |
Electromagnetic actuated |
0 |
| 318/549 |
Return to "off", "starting" or "neutral" positions |
15 |
| 318/550 |
Power-operated controllers |
5 |
| 318/544 |
With other motor control device |
5 |
| 318/545 |
Main line switch |
3 |
| 318/689 |
Torquing motors |
46 |
| 318/DIG.2 |
Windshield wiper controls |
340 |
| 318/161 |
With flywheel or massive rotary member |
54 |
| 318/3 |
With particular motor-driven load device |
75 |
| 318/8 |
Plural, diverse or diversely controlled driving motors (e.g., driving differential gearing) |
34 |
| 318/4 |
Plural, diverse or diversely controlled load device |
27 |
| 318/5 |
Plural motor drive |
26 |
| 318/9 |
Power- or motion-transmitting mechanism |
101 |
| 318/15 |
Mechanical gearing |
60 |
| 318/14 |
Motion-converting mechanism |
41 |
| 318/10 |
Reversible drive mechanism |
38 |
| 318/11 |
Variable speed mechanism |
26 |
| 318/12 |
Gearing |
38 |
| 318/13 |
Differential type |
15 |
| 318/6 |
Tension-maintaining type of motor-control system |
141 |
| 318/7 |
Plural, diverse or diversely controlled motors |
151 |
| 318/490 |
With signals, meters, recorders or testing devices |
229 |
