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| Class Numbers & Titles | Class Numbers Only | USPC Index | International | HELP |
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| You are viewing a USPC Schedule. |
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| Class 340 | COMMUNICATIONS: ELECTRICAL |
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![[List of Pre Grant Publications for class 340 subclass 850]](../as.gif) | ![[List of Patents for class 340 subclass 850]](../ps.gif) | 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 |
