Class 340 | COMMUNICATIONS: ELECTRICAL |
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850 | UNDERWATER |
853.1 | WELLBORE TELEMETERING OR CONTROL (E.G., SUBSURFACE TOOL GUIDANCE, DATA TRANSFER, ETC.) |
853.2 | Diagnostic monitoring or detecting operation of communications equipment or signal |
853.3 | Selective control of subsurface equipment |
853.4 | In horizontal or inclined drilling or passage |
853.6 | Control of drill bit or apparatus (e.g., steering, speed, etc.) |
853.7 | Repeater in subsurface link (e.g., cable, etc.) |
853.8 | With orientation sensing of subsurface telemetering equipment (other than drilling equipment) |
853.9 | Including detail of subsurface signal storage (e.g., memory, recorder, register, etc.) |
854.1 | With position or depth recording (e.g., line payout, equipment locator, etc.) |
854.3 | Using a specific transmission medium (e.g., conductive fluid, annular spacing, etc.) |
854.4 | Drill string or tubing support signal conduction |
854.5 | Wellbore casing or ground |
854.6 | Electromagnetic energy (e.g., radio frequency, etc.) |
854.7 | Optical link (e.g., waveguide, etc.) |
854.8 | Near field coupling (e.g., inductive, capacitive, etc.) |
854.9 | Cable or wire (e.g., conductor as support, etc.) |
855.3 | Multiplexed signals |
855.4 | Pulse or digital signal transmission |
855.7 | Modification of signal bandwidth, frequency, or circuit impedance at subsurface location |
855.8 | Including specified power transmission feature or source (e.g., battery, etc.) |
856.1 | In horizontal or inclined passage arrangement |
856.2 | With expandable or inflatable sensor element or mounting |
856.3 | Including particular sensor |
870.01 | CONTINUOUSLY VARIABLE INDICATING (E.G., TELEMETERING) |
870.02 | With meter reading |
870.04 | With calibration |
870.05 | With calculation |
870.07 | Combined (TM system with other system) |
870.1 | For radio sonde |
870.11 | Plural transmitters |
870.16 | Condition responsive |
870.18 | Using a particular modulation (e.g., phase, frequency, or amplitude) |
870.25 | Phase variation |
870.26 | Frequency variation |
870.27 | Plural circuits, each for particular magnitude |
870.28 | Via radiant energy beam (via particular energy) |
870.3 | With particular transmitter (e.g., piezoelectric, dynamo) |
870.31 | Inductive transmitter |
870.37 | Capacitive transmitter |
870.38 | Resistive transmitter |
870.39 | With supply voltage regulation or compensation |
870.4 | With particular receiver (e.g., ratiometer) |
901 | EXTERNAL CONDITION VEHICLE-MOUNTED INDICATOR OR ALARM |
902 | Transmitter in another vehicle (e.g., emergency vehicle) |
904 | Transmitter in one vehicle only |
905 | Highway information (e.g., weather, speed limits, etc.) |
906 | OVERRIDE OF TRAFFIC CONTROL INDICATOR BY COMMAND TRANSMITTER |
907 | TRAFFIC CONTROL INDICATOR |
908 | Portable |
909 | Plural intersections under common central station control |
910 | Central station responsive to traffic detectors |
911 | Central station controls offset (time between beginning of same phase at adjacent intersections) |
912 | Standby cycling implemented if invalid transmission received or loss of transmission occurs |
913 | Offset control |
914 | Split control |
915 | Central station includes display of status of indicators |
916 | Intersection normally under local controller |
917 | Controller responsive to traffic detectors |
918 | Controller, when changing right of way, alters or skips normal "go" cycle of street having no traffic detected |
919 | Plural cross highways at intersection each have traffic detectors |
922 | Density determines split |
923 | Extension of time |
924 | Local controller can be superceded by central station controller |
925 | Pedestrian control |
926 | Manual setting of cycle length and split times |
927 | Rotating cam structure (specific structure required) |
928 | Combined (e.g., toll systems, one-way) |
929 | Indication of time remaining before change of phase |
931 | Traffic control or local controller failure indicator |
932 | Pacing (e.g., vehicle keeps pace with sequentially activated lights) |
932.1 | Pivoted |
932.2 | VEHICLE PARKING INDICATORS |
933 | VEHICLE DETECTORS |
934 | Density |
935 | Discriminates vehicle direction |
936 | Speed and overspeed |
937 | With camera |
938 | Compensation for vehicle remaining at sensor position |
939 | Environmental or drift compensation |
940 | With pneumatic |
941 | Inductive |
942 | Photoelectric |
943 | Sonic or ultrasonic |
944 | PEDESTRIAN GUIDANCE |
945 | AIRCRAFT ALARM OR INDICATING SYSTEMS |
946 | Nonairplane (e.g., balloon or helicopter) |
947 | Land-based landing guidance |
948 | Aircraft actuation of land-based landing guides |
949 | Wind direction |
950 | Movable (e.g., rotatable) guides |
951 | Phased landing guidance (e.g., runway approach, landing, touchdown) |
952 | Particular energy guide source (e.g., sound, electric field, radio) |
958 | Docking guidance |
959 | Takeoff indicator |
960 | Landing gear indicator |
961 | Potential collision with other aircraft |
962 | Icing indicator |
963 | Flight alarm |
964 | Phased warnings for same flight condition |
965 | Tactile |
966 | Stall |
967 | Attitude (including yaw, angle of attack, roll, pitch, glide slope) |
968 | Wind shear |
969 | Speed |
970 | Altitude |
971 | Nonalarm flight indicator |
972 | Runway presentation |
973 | Indicator of at least four flight parameters (altitude, speed, etc.) |
974 | Attitude |
977 | Altitude |
978 | Speed |
979 | Heading (includes deviation from desired course) |
980 | Indicator visible in pilot's line of sight through windscreen |
981 | Aircraft beacons |
983 | Obstruction beacon |
984 | WATERCRAFT ALARM OR INDICATING SYSTEMS |
988 | VEHICLE POSITION INDICATION |
989 | At remote location |
990 | With map display |
991 | Position indication transmitted by vehicle after receipt of information from local station |
992 | Position indication transmitted at periodic intervals (e.g., distance travelled) |
993 | Position indication transmitted by local station to remote location |
994 | Vehicle's arrival or expected arrival at remote location along route indicated at that remote location (e.g., bus arrival systems) |
995.1 | Map display |
995.11 | Having plural maps |
995.12 | Transmission of map data to vehicle |
995.14 | Manipulation of map display or data |
995.19 | Route determination and display on map |
995.24 | Including landmark information |
995.25 | Including vehicle position correction |
995.26 | Including particular display structure (e.g., detachable, rolling map sheet, etc.) |
995.27 | Including particular display feature (e.g., indication of direction, mileage, road type, etc.) |
995.28 | Including particular position/direction sensor |
996 | Prerecorded message describes position |
425.5 | LAND VEHICLE ALARMS OR INDICATORS |
426.1 | Of burglary or unauthorized use |
427 | Of motorcycles or bicycles |
428 | Responsive to changes in voltage or current in a vehicle electrical system |
429 | Responsive to inertia, vibration, or tilt |
430 | With entrance/exit time delay |
426.11 | Including immobilization |
426.13 | Remote control |
426.14 | Programmable |
426.15 | Status indication |
426.16 | Transmitter and receiver in vehicle |
426.17 | Transmitter on user |
426.18 | Remote alarm |
426.22 | Local indication |
426.24 | Including specified sensor |
426.25 | Plural diverse sensors |
426.26 | Detecting intruder energy (e.g., infrared, etc.) |
426.27 | Window (i.e., glass) |
426.28 | Door or lock |
426.29 | Trunk or hood |
426.3 | Ignition switch |
426.31 | Steering wheel |
426.32 | Brake |
426.33 | Wheel/tire |
426.34 | Accessory (e.g., speaker, radio face plate, etc.) |
426.35 | Including programmable key |
426.36 | Including keyless entry |
431 | For trailer |
432 | For bicycle |
433 | For school bus |
434 | For taxi |
435 | Of relative distance from an obstacle |
436 | Of collision or contact with external object |
438 | Internal alarm or indicator responsive to a condition of the vehicle |
439 | Operation efficiency (e.g., engine performance, driver habits) |
440 | Tilt, imbalance, or overload |
441 | Speed of vehicle, engine, or power train |
442 | Tire deflation or inflation |
449 | Temperature |
450 | Fluid level |
451 | Fluid pressure |
453 | Brake or clutch condition |
455 | Battery charging system condition |
456 | Gear position |
457 | Reminder |
457.1 | Of seat belt application |
457.2 | Of headlight energization |
457.3 | Of parking brake application |
457.4 | Of service interval expiration |
458 | Lamp or lamp circuit condition |
459 | Plural conditions |
463 | External alarm or indicator of movement |
464 | Plural indications (e.g., go, slow, stop) |
465 | Turning or steering |
466 | Speed |
467 | Acceleration or deceleration |
468 | External signal light system |
469 | With two or more intensity levels (e.g., day or night) |
470 | Pass - no pass |
471 | Hazard warning or distress signalling |
474 | With audible signal |
475 | Turn signal |
479 | Brake light |
480 | Electromagnetically actuated mechanical signal |
146.2 | DIGITAL COMPARATOR SYSTEMS |
500 | CONDITION RESPONSIVE INDICATING SYSTEM |
501 | With particular system function (e.g., temperature compensation, calibration) |
502 | Acknowledgement |
504 | Answer-back |
505 | Interrogator-responder |
506 | Alarm system supervision |
507 | Fail-safe |
508 | Redundant (e.g., added circuit or loop) |
509 | Plural or diverse current sources |
510 | Bridge or potential divider |
511 | Threshold or window (e.g., of analog electrical level) |
512 | Pulse |
513 | Diode |
514 | Testing |
517 | Selection from a plurality of sensed conditions |
518 | Scanning |
519 | Worst condition |
520 | First sensed exclusively indicated |
521 | Plural diverse conditions |
523 | Particular sequence of conditions |
524 | Condition position indicator |
526 | Predetermined rate of occurrence |
527 | Time delay |
531 | With particular coupling link |
532 | Having particular safety function |
533 | Wired |
539.1 | Radio |
539.11 | Including personal portable device |
539.14 | Including remote residential device |
539.16 | Including central station detail |
539.22 | Having plural distinct sensors (i.e., for surrounding conditions) |
539.26 | Specific environmental sensor |
539.3 | Including power saving |
539.31 | Including tamper resistant device |
539.32 | Including location of misplaced item |
540 | Specific condition |
541 | Intrusion detection |
542 | Lock |
544 | Disturbance of fluid pressure |
545.1 | Door or window movement |
546 | Portable |
545.2 | Specified sensor |
547 | Magnetic sensor |
548 | Plug or cord tension sensor |
549 | Rotatable sensor |
545.3 | Sensing of electromagnetic energy (e.g., light, infrared, or microwave) |
545.4 | Sensing of electrical parameter (e.g., piezoelectricity or capacitance) |
545.5 | Inertia-type sensor (e.g., mercury or pendulum switch) |
545.6 | Door, cover, or lid for self-contained article (e.g., refrigerator, mailbox, drawer, cabinet, or box) |
545.7 | Specified door or window portion (e.g., doorknob) |
545.8 | Specified door or window attachment (e.g., shade or blind) |
545.9 | Plural doors or windows |
550 | Partition penetration |
551 | Disturbance of magnetic field |
552 | Disturbance of electromagnetic waves |
561 | Disturbance of electric field |
565 | Responsive to intruder energy |
568.1 | Article placement or removal (e.g., anti-theft) |
568.2 | Signal-carrying conduit between sensor and article (e.g., cable, power cord, or data link) |
568.5 | Shopping cart or item thereon |
568.6 | Sporting equipment (e.g., golfbag, club, cart, or skis) |
568.7 | Currency, credit card, or container therefor (e.g., wallet or handbag) |
568.8 | Article on pedestal, in display case, or mounted on wall (e.g., work of art) |
569 | Mailbox |
570 | Drawer |
571 | Alarm on protected article |
572.1 | Detectable device on protected article (e.g., "tag") |
572.2 | Specified relationship between field and detection frequencies (e.g., nth order harmonics) |
572.3 | Deactivatable by means other than mere removal |
572.4 | Specified processing arrangement for detected signal |
572.5 | Having tuned resonant circuit |
572.6 | Having "soft" magnetic element (e.g., Permalloy) |
572.7 | Specified antenna structure |
572.8 | Specified device housing or attachment means |
573.1 | Human or animal |
574 | Holdup |
575 | Sleep |
576 | Drive capability |
573.2 | Nondomestic animal (e.g., for hunting, fishing, or repelling) |
573.3 | Domestic animal training, monitoring, or controlling |
573.4 | House arrest system, wandering, or wrong place |
573.5 | Incontinence or enuresis alarm |
573.6 | Water safety alarm |
573.7 | Posture alarm |
577 | Flame |
580 | Ice formation |
584 | Thermal |
585 | Refrigerated storage |
586 | Portable |
587 | False alarm resistant |
588 | Time-temperature relationship (e.g., overtemperature exceeds predetermined interval or time-temperature integral) |
590 | Fusible, frangible, or destructible sensor |
592 | Expanding fluid sensor |
593 | Switch sensor |
595 | Current modifier or generator |
600 | Radiant energy |
601 | Meteorological condition |
603 | Fluent material |
604 | Wetness |
605 | Leakage |
606 | Flow rate |
612 | Material level |
613 | Weight in container |
614 | Pressure |
615 | Moving sensor (e.g., impeller) |
616 | Overflow |
617 | Pulverant material (e.g., bin) |
618 | Liquid |
626 | Pressure |
627 | Particle suspension in fluid |
632 | Gas |
635 | Condition of electrical apparatus |
636.1 | Battery |
636.11 | By change or rate of change of impedance or admittance |
636.12 | By current and voltage |
636.13 | By current |
636.15 | By voltage |
636.16 | Having load detail |
636.17 | Having overcharge detection or protection |
636.19 | Battery deterioration detection |
636.2 | Including charging circuit |
636.21 | Wet cell type |
637 | Watt-hour meter |
638 | Fuse or circuit breaker |
640 | Heater element |
641 | Signalling light element |
644 | Switch or relay |
645 | Rectifier |
646 | Transformer |
647 | Insulation |
648 | Motor |
649 | Condition of intentional grounding circuit |
650 | Undesired circuit ground or short |
652 | Breaking of circuit continuity |
653 | Electronic circuit or component |
654 | Circuit energization |
657 | Electrical characteristic |
665 | Force or stress |
669 | Acceleration |
670 | Velocity |
673 | Article transport |
678 | Of geometrical gauge |
679 | Machine condition |
686.1 | Position responsive |
691.1 | Specified indicator structure |
691.2 | Simulated effect |
691.3 | Degree or urgency |
691.4 | Plural |
691.6 | Information display |
692 | Sound reproducer |
691.7 | Mechanical |
691.8 | Control circuit detail |
693.1 | Specified power supply |
693.2 | Substitute or emergency source (e.g., back-up battery) |
693.3 | Having reduced power consumption (e.g., intermittent power) |
693.4 | Having specified voltage regulator |
693.5 | Specified housing |
1.1 | SELECTIVE |
2.1 | Path selection |
2.2 | Channel selecting matrix |
2.21 | Plural stages |
2.25 | Folded |
2.26 | Having master control element |
2.27 | Plural matrices |
2.28 | Crosspoint switch detail (i.e., specific crosspoint) |
2.4 | Code or pulse responsive |
2.5 | Wiper |
2.6 | Plural stages |
2.7 | Condition of data channel |
2.9 | Spare channel |
2.8 | Data channel selector line |
2.81 | Tree or cascade |
3.1 | Monitoring in addition to control (e.g., supervisory) |
3.2 | Synchronization |
3.3 | Including storage or recording |
3.4 | Quiescent |
3.42 | Control to avoid fault |
3.43 | Fault condition detection |
3.5 | Including addressing |
3.6 | Scanning |
3.7 | Including indicator |
3.8 | Electromechanical relay |
3.9 | Control then monitoring |
4.1 | Communication or control for the handicapped |
4.2 | Synchronizing |
4.3 | Program control |
4.31 | Operator initiated |
4.32 | Download through data network |
4.33 | Download through distribution network |
4.34 | Enable/disable (e.g., kill machine signal, etc.) |
4.35 | Time sequential manner |
4.36 | Machine tool |
4.37 | Of audio system |
4.4 | Audio reproducing system (e.g., by pulse signal, etc.) |
4.5 | Stock quotation |
4.6 | Space allocation (e.g., vehicle seat, hotel reservation, etc.) |
5.1 | Intelligence comparison for controlling |
5.2 | Authorization control (e.g., entry into an area) |
5.21 | Varying authorization |
5.22 | Code programming |
5.26 | Code rotating or scrambling |
5.27 | Rule based input |
5.28 | Timed access blocking |
5.3 | Having indication of improper access |
5.4 | Credit |
5.5 | Input from central location for plural controlled devices |
5.51 | Manual code input |
5.6 | Coded record input (e.g., IC card or key) |
5.61 | Wireless transceiver |
5.64 | Wireless transmitter |
5.65 | Electronic coded record |
5.66 | Magnetic coded record |
5.67 | Mechanical coded record |
5.7 | Access barrier |
5.74 | Access to electrical information |
5.8 | Authentication (e.g., identity) |
5.9 | Commodity (e.g., vending) |
6.1 | Having indication or alarm |
6.11 | Additional to other selective control |
6.12 | Party line |
6.13 | Selection by means of frequency |
6.14 | Selector or indicator, per se |
6.15 | Step-by-step impulse |
6.17 | Amplitude or polarity controlled |
7.1 | Paging to control diverse device |
7.2 | Code responsive (i.e., paging) |
7.21 | Two-way paging |
7.24 | Transmitting configuration |
7.28 | Paging terminal (i.e., element prior to the transmitter) |
7.32 | Power control or battery saving |
7.39 | Programming the receiver |
7.42 | Frequency scanning for address |
7.43 | Particular message and address format (e.g., POCSAG, FLEX, etc.) |
7.45 | Addressing format |
7.5 | Distress signal |
7.51 | Message presentation |
7.52 | Storing or retrieving message (e.g., received message database handling) |
7.53 | Canned message (audible or visual) |
7.54 | Via externally coupled device |
7.55 | Display |
7.57 | Audible |
7.58 | Alert |
7.63 | Housing detail |
8.1 | Location indication |
9.1 | Addressing |
9.11 | Group addressing |
9.12 | Asynchronous |
9.15 | Including source address |
9.16 | Programming of the address |
9.17 | Plural part (e.g., digit, etc.) or repetitions |
10.1 | Interrogation response |
10.2 | Contention avoidance |
10.3 | Interrogation signal detail |
10.4 | Response signal detail |
10.5 | Additional control |
10.6 | Printout or display |
11.1 | With multidigit encoder |
12.1 | Pulse responsive actuation |
12.11 | Phase or frequency shift keying |
12.12 | Polarity |
12.13 | Pulse pairs |
12.14 | Having delay line |
12.15 | Serial |
12.16 | Pulse width |
12.17 | Pulse spacing (e.g., pulse repetition rate, etc.) |
12.18 | Counting |
12.21 | Shift register |
12.22 | Remote control |
12.23 | Programming |
12.24 | Operator initiated |
12.25 | Download through data network |
12.26 | Download through distribution network |
12.27 | Enable/disable (e.g., kill machine signal, etc.) |
12.28 | Programming a controller |
12.29 | Programming an appliance |
12.3 | Diverse delivery media (e.g., wired and wireless, etc.) |
12.31 | Wired |
12.32 | Power line (PLC) |
12.33 | Modulation technique |
12.34 | Noise reduction (e.g., filtering, etc.) |
12.36 | Impedance matching (e.g., Y-match or delta match, etc.) |
12.37 | Bi-directional (e.g., with transceiver, etc.) |
12.38 | With inductive coupling (e.g., transformer or torroid, etc.) |
12.39 | With coupling plug |
12.4 | Data network |
12.5 | Radio |
12.52 | Plural devices |
12.54 | Indicator or display |
12.55 | Housing or casing |
13.1 | Phase responsive actuation |
13.2 | Frequency responsive actuation |
13.21 | Programming |
13.22 | Diverse delivery media (e.g., wired and wireless, etc.) |
13.23 | Power line (PLC) |
13.24 | Wireless link |
13.33 | Plural frequencies |
13.37 | Amplitude responsive actuation |
14.1 | Decoder matrix |
14.2 | Plural stage |
14.3 | Programmable |
14.4 | Logic crosspoint |
14.5 | Bistable crosspoint |
14.6 | Semiconductor crosspoint |
15.1 | Having electron beam device |
16.1 | System having rectifier |
286.01 | SYSTEMS |
286.02 | Network signaling |
286.04 | Manual alarm telegraph; e.g., other than signal box type |
286.06 | Call station |
286.11 | Annunciator |
286.13 | Mimic |
287 | Signal box type (e.g., to call messenger, plural fire alarm boxes) |
288 | Combined (e.g., alarm circuit over power line) |
289 | With fire extinguisher (e.g., CO2) |
290 | Engine house apparatus controlling (e.g., releases horses, starts motor) |
291 | Repeaters (e.g., from central to plural fire houses or to siren) |
292 | Circuit maintenance (e.g., fault alarm, faulty circuit substitution) |
293 | Variable signal (e.g., police and fire, first and third alarm) |
295 | Noninterfering (prevents break-in by another box during transmission) |
297 | With signal at box (e.g., preliminary signal to combat false alarms) |
298 | Answer back signal acknowledges transmitted signal |
299 | Simultaneous (e.g., actuated by transmitted signal) |
300 | Lamp at box (e.g., to call patrolman) |
301 | Portable box actuating key (e.g., key must be released by signal from central) |
303 | Frangible element must be broken to send signal |
304 | False alarm combating (e.g., detention devices) |
305 | Local circuit to actuate box |
307 | Transmitters |
309.16 | Timer control |
309.2 | With nonelectrical indicator or exhibitor |
309.3 | With diversely controlled indicator |
309.4 | Selectively or sequentially actuated indicators |
309.6 | Circuit maker-breaker in series |
309.7 | Reminder device with built-in timer |
309.8 | Separate diverse device activated by timer |
309.9 | Separate diverse device deactivated by timer |
311.2 | Nonselective paging (e.g., public address system) |
313 | Answer back |
315 | Selsyn type |
316 | Rebalancing at receiver |
318 | Synchronous distributor at transmitter and receiver |
319 | Plural electromagnets or plural motors receiver |
320 | Via fluid conduit (e.g., fire hose) |
321 | Portable self-contained (e.g., movie usher's signalling flashlight) |
322 | Self-cancelling after fixed time |
323R | Game reporting |
326 | Plural (e.g., concurrent auxiliary) single indications (e.g., light flashes when bell rings) |
328 | Audible signals (e.g., bell rings softly first and then loudly) |
330 | In and out indicators (e.g., doorbell button flashes "out" sign) |
331 | Periodic or flashing |
332 | Signal light systems |
333 | With specific power supply (e.g., power substitution) |
425.1 | REPEATER IN UNSPECIFIED TYPE COMMUNICATIONS LINE OR CHANNEL (E.G., RELAY STATION) |
407.1 | TACTUAL INDICATION |
815.4 | VISUAL INDICATION |
815.41 | False signal prevention (anti-sunlight) |
815.42 | Having light piping |
815.44 | Seven-segment indicator |
815.45 | Using light emitting diodes |
815.46 | Audio responsive lamp |
815.47 | Switchboard or panel type (e.g., bullseye) |
815.53 | Lighted alphanumeric or character indicator matrix |
815.55 | Transparent or translucent indicator with means for blocking light |
815.58 | Step by step positioner |
815.62 | Electromagnetic actuator for indicator matrix |
815.63 | Binary indicator |
815.64 | Electromagnetic rotator for indicator wheel |
815.65 | Multiple colors |
815.69 | Diverse indications |
815.7 | Having percussion type indication (e.g., electric bells, chimes) |
815.72 | Having pneumatic type indication |
815.73 | With lamp enclosed in transparent housing |
815.78 | Pointer indicator |
815.81 | Grouped drop annunciators |
815.83 | Movable |
384.1 | AUDIBLE INDICATION |
384.2 | Ultrasonic pest control |
384.3 | Simulation |
384.4 | Electronic siren (e.g., wail tone or yelp tone warning device) |
384.5 | With computer element |
384.6 | Piezoelectric |
384.7 | Electronic |
385.1 | Explosive |
387.1 | Weatherproofing |
388.1 | Diaphragm (e.g., horn or buzzer) |
390.1 | Rotary actuator |
388.2 | Alternating current |
388.3 | With auxiliary flexible membrane |
388.4 | With resonance chamber |
388.5 | Armature support |
388.7 | Interrupter |
391.1 | Housing or mounting |
392.1 | Percussion-type sound producer (e.g., signal chimes or bells) |
392.2 | Rotary actuator |
393.1 | Plural armatures |
393.2 | Battery operated |
393.3 | Pushbutton |
393.4 | Including timer |
392.3 | Volume control |
401.1 | Alternating current |
398.1 | Nonelectrical driving means (e.g., spring or weight) |
392.4 | Tubular sound producer (e.g., signal chimes) |
392.5 | Resonator (e.g., signal chimes) |
395.1 | Suspended (e.g., locomotive bell) |
397.1 | Armature support |
397.3 | Interrupter |
397.5 | Polarized |
396.1 | Housing or mounting |
404.1 | Pneumatic-type sound producer (e.g., whistle or siren) |
999 | MISCELLANEOUS |
FOREIGN ART COLLECTIONS | ||
FOR000 | CLASS-RELATED FOREIGN DOCUMENTS |
Any foreign patents or non-patent literature from subclasses that have been reclassified have been transferred directly to FOR Collections listed below. These Collections contain ONLY foreign patents or non-patent literature. The parenthetical references in the Collection titles refer to the abolished subclasses from which these Collections were derived. | ||
VEHICLE POSITION INDICATION (340/988) |
LAND VEHICLE ALARM OR INDICATOR (340/425.5) |
CONDITION RESPONSIVE INDICATING SYSTEM (340/500) |
With particular coupling link (340/531) |
Specific condition (340/540) |
Intrusion detection (340/541) |
FOR101 | Article placement or removal (340/568) |
FOR103 | Human or animal (340/573) |
Condition of electrical apparatus (340/635) |
FOR104 | Position responsive (340/686) |
FOR105 | Specified indicator structure (340/691) |
FOR106 | Specified power supply or housing (340/693) |
SELECTIVE (340/825) |
FOR203 | Channel selection (340/825.03) |
FOR326 | Plural stage matrix system (e.g., path finding) (340/826) |
FOR204 | Code or pulse responsive (340/825.04) |
FOR107 | Loop (340/825.05) |
FOR206 | Monitoring and control (e.g., supervisory) (340/825.06) |
FOR207 | Having addressing (340/825.07) |
FOR209 | Quiescent (340/825.09) |
FOR210 | Scanning (340/825.1) |
FOR214 | Synchronization (340/825.14) |
FOR215 | Having storage or recording (340/825.15) |
FOR216 | Fault condition (340/825.16) |
FOR217 | Having indicator (340/825.17) |
FOR218 | Relay (340/825.18) |
FOR110 | Intelligence comparison (340/825.3) |
FOR311 | SYSTEM WITH RECEIVER SELECTION (455/31.1) |
FOR312 | Control of selectively responsive paging arrangement over telephone line (379/FOR 102) |
FOR321 | Receiver scans for address signal (455/32.1) |
FOR381 | Coded sequence (455/38.1) |
SELECTIVE (340/825) |
Having indication or alarm (e.g., location indication) (340/825.36) |
FOR108 | Interrogation response (340/825.54) |
FOR279 | Matrix (340/825.79) |
FOR280 | Plural stage (340/825.8) |
FOR281 | Electroluminescent elements (340/825.81) |
FOR283 | Programmable (340/825.83) |
FOR285 | Semiconductor crosspoint (340/825.85) |
FOR286 | Integrated circuit (340/825.86) |
FOR287 | Logic (340/825.87) |
FOR288 | Bistable (340/825.88) |
FOR289 | Switching element (340/825.89) |
FOR290 | Transistor (340/825.9) |
FOR291 | Field effect transistor (340/825.91) |
FOR292 | Four or more electrodes (340/825.92) |
FOR293 | Plural (340/825.93) |
FOR294 | Diode (340/825.94) |