| Class Number |
Class Name |
Patents |
| 318/1 |
Electric motor with nonmotor driving means (e.g., axle drive, manual drive) |
9 |
| 318/114 |
Impact, mechanical shock, or vibration-producing motors |
137 |
| 318/115 |
Motor with diverse motions (e.g., rotary and reciprocating) |
47 |
| 318/116 |
Nonmagnetic motor |
216 |
| 318/118 |
Magnetostrictive motor |
55 |
| 318/119 |
Reciprocating or oscillating motor |
83 |
| 318/135 |
Linear-movement motors |
605 |
| 318/136 |
Auxiliary means for producing mechanical starting or accelerating torque |
10 |
| 318/138 |
Space-discharge-device commutated motor |
1,487 |
| 318/139 |
Battery-fed motor systems |
955 |
| 318/140 |
Generator-fed motor systems having generator control |
125 |
| 318/159 |
Having rotor element biased against rotation |
16 |
| 318/16 |
Supplied or controlled by space-transmitted electromagnetic or electrostatic energy (e.g., by radio) |
232 |
| 318/161 |
With flywheel or massive rotary member |
54 |
| 318/162 |
Control by patterns or other predetermined schedule means |
32 |
| 318/17 |
Portable-mounted motor and/or portable-mounted electrical systems therefor |
56 |
| 318/244 |
Alternating current commutating motors |
38 |
| 318/246 |
Series motors |
32 |
| 318/253 |
Homopolar or uniform field motors |
3 |
| 318/254 |
Self-commutated impulse or reluctance motors |
2,683 |
| 318/255 |
Plural diverse motor controls |
24 |
| 318/280 |
Motor-reversing |
428 |
| 318/3 |
With particular motor-driven load device |
75 |
| 318/34 |
Plural, diverse or diversely controlled electric motors |
207 |
| 318/362 |
Braking |
149 |
| 318/383 |
"anti-braking" or braking-prevention means |
9 |
| 318/430 |
Motor load, armature current or force control during starting and/or stopping |
279 |
| 318/432 |
Constant motor current, load and/or torque control |
1,035 |
| 318/434 |
Limitation of motor load, current, torque or force (e.g., preventing overload) |
1,081 |
| 318/436 |
Nonrunning, energized motor |
50 |
| 318/437 |
Phasing or angular or linear positional control of movable element of the motor |
74 |
| 318/438 |
Power factor control of armature or line circuit |
67 |
| 318/439 |
Motor commutation control systems |
1,435 |
| 318/440 |
Having plural, diverse or diversely controlled sources |
48 |
| 318/443 |
Periodic, repetitious or successive operations control of motor, including "jog" and "inch" control |
278 |
| 318/445 |
Automatic and/or with time-delay means (e.g., automatic starting and/or stopping) |
301 |
| 318/490 |
With signals, meters, recorders or testing devices |
230 |
| 318/491 |
Control of both motor circuit and motor structure |
20 |
| 318/492 |
Motor magnetic energy dissipation |
16 |
| 318/493 |
Control of both armature (or primary) circuit and field (or secondary) circuit |
50 |
| 318/494 |
Armature (or primary) circuit control |
21 |
| 318/521 |
Field or secondary circuit control |
14 |
| 318/538 |
Motor structure adjustment or control |
37 |
| 318/543 |
Three-or-more-positions motor controller systems |
9 |
| 318/558 |
Miscellaneous |
81 |
| 318/560 |
Positional servo systems (e.g., servomechanisms) |
713 |
| 318/689 |
Torquing motors |
46 |
| 318/690 |
Self-synchronous type of motor |
14 |
| 318/696 |
Open-loop stepping motor control systems |
1,188 |
| 318/700 |
Synchronous motor systems |
373 |
| 318/725 |
Repulsion motor systems |
13 |
| 318/727 |
Induction motor systems |
344 |
| 318/DIG.2 |
Windshield wiper controls |
340 |
