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| Class 73 | MEASURING AND TESTING |
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![[List of Pre Grant Publications for class 73 subclass 1.01]](../as.gif) | ![[List of Patents for class 73 subclass 1.01]](../ps.gif) | 1.01 | INSTRUMENT PROVING OR CALIBRATING |
| | 1.02 |  Gas or liquid analyzer |
| | 1.08 | Dynamometer |
| | 1.09 |  Torque |
| | 1.13 | Weight |
| | 1.14 | Rotor unbalance or a roller having a smooth surface |
| | 1.15 | Load cell (e.g., strain gauge or piezoelectric sensor) |
| | 1.16 | Volume of flow, speed of flow, volume rate of flow, or mass rate of flow |
| | 1.17 | Plug with leak detector |
| | 1.18 | Sphere |
| | 1.19 | Piston |
| | 1.24 | Tracer |
| | 1.25 | Orifice or restriction |
| | 1.27 | Turbine, geared meter, pulse activated, or counter |
| | 1.29 | Anemometer or pitot tube |
| | 1.31 | With liquid level monitor or timer |
| | 1.33 | With floating element or weighing |
| | 1.34 | With signal processing, span or set point adjustment (e.g., zero correction) |
| | 1.35 | With pressure measurement or plural flowmeters |
| | 1.36 | Metering dispenser |
| | 1.37 | Speed, velocity, or acceleration |
| | 1.42 | Timing apparatus (e.g., fuse, camera, or shutter) |
| | 1.43 | Chronometer (e.g., clock, watch, or watch unbalance) |
| | 1.44 |  Using antenna or radio frequency (RF) |
| | 1.45 | Using optical sensor or element |
| | 1.48 | Using sound sensor or piezoelectric vibration sensor |
| | 1.52 | Plural watches |
| | 1.53 | With resilient element |
| | 1.56 | Optical instrument (e.g., camera shutter) or optical sensor |
| | 1.57 | Fluid pressure |
| | 1.58 | Vacuum |
| | 1.59 | With signal correction or processing |
| | 1.65 | Dead weight type |
| | 1.66 | Varying |
| | 1.68 | With piston and cylinder |
| | 1.69 | Using or containing liquid |
| | 1.71 | Pressure activated device |
| | 1.73 | Liquid level or volume measuring apparatus |
| | 1.75 | Angle, direction, or inclination |
| | 1.79 | Displacement, motion, distance, or position |
| | 1.82 | Apparatus for measuring by use of vibration or apparatus for measuring vibration (e.g., acoustic or ultrasonic) |
| | 1.83 | Liquid |
| | 1.84 | Rotary or rotor unbalance |
| | 1.85 | Seismic (e.g., geophone) or with optical sensor |
| | 1.86 | Reference standard detail |
| | 1.87 | Centrifuge |
| | 1.88 | Span or set point adjustment (e.g., zero correction) |
| | 1.89 | Roughness or hardness |
| | 7 | BY ABRASION, MILLING, RUBBING, OR SCUFFING |
| | 9 | FRICTIONAL RESISTANCE, COEFFICIENT OR CHARACTERISTICS |
| | 11.01 | TESTING IMPACT DELIVERING DEVICE (E.G., A HAMMER) |
| | 11.04 | TESTING OF SHOCK ABSORBING DEVICE (E.G., AUTOMOBILE SHOCK ABSORBER, GUN RECOIL APPARATUS, ETC.) |
| | 11.05 | Torsional vibration damper |
| | 11.06 | Railway draft gear |
| | 11.07 | In situ vehicle suspension |
| | 11.09 | By applying reciprocating or oscillating motion |
| | 12.01 | TESTING BY IMPACT OR SHOCK |
| | 12.02 | Resilient ball (e.g., golf ball, baseball, etc.) |
| | 12.03 | Typewriting ribbon or carbon paper |
| | 12.04 | Accelerated or decelerated specimen (e.g., propelled or dropped specimen support carriage) |
| | 12.08 | Specimen directly subjected to a fluid pressure pulse or wave |
| | 12.09 | Specimen impactor detail |
| | 19.01 | GAS CONTENT OF A LIQUID OR A SOLID |
| | 19.02 | By gas chromatography |
| | 19.03 | By vibration |
| | 19.04 | By rate of flow of the gas |
| | 19.05 | By pressure of the gas |
| | 19.07 | Of metal |
| | 19.08 | Of concrete, mortar, or plastic while in a fluent state |
| | 19.09 | Of mud |
| | 19.1 | Of a liquid |
| | 19.12 | Particular separator |
| | 23.2 | GAS ANALYSIS |
| | 23.21 | With compensation detail (for error or drift correction, etc.) |
| | 23.22 | For gas chromatography |
| | 23.28 | For density or specific gravity |
| | 23.3 | Breath analysis |
| | 23.31 | Gas of combustion |
| | 23.34 | Odor |
| | 23.35 | Gas chromatography |
| | 23.36 | With electrical computer or data processor control |
| | 23.37 | With spectrometer |
| | 23.38 | Petrochemical |
| | 23.39 | Column detail |
| | 23.4 | Detector detail |
| | 23.41 | Including sample preparation or sampling |
| | 23.42 | Detail of gas handling means |
| | 24.01 | By vibration |
| | 24.02 | Produced by radiant energy |
| | 24.03 | Solid content of gas |
| | 24.04 | Moisture content or vapor pressure of gas |
| | 24.05 | Density or specific gravity of gas |
| | 24.06 | Detector detail |
| | 25.01 | By thermal property |
| | 25.02 | With magnetic property (e.g., paramagnetic gas) |
| | 25.03 | Thermoconductivity |
| | 25.04 | Moisture content or vapor pressure |
| | 25.05 | Detector detail |
| | 28.01 | Solid content of gas |
| | 29.01 | Moisture content or vapor pressure |
| | 29.02 | Hygrometer |
| | 335.01 | With optical element |
| | 335.02 | With electric circuitry or electric circuit component detail |
| | 335.06 | Wet and dry responsive elements |
| | 335.11 | Expanding-sorption element |
| | 29.03 | Pressure |
| | 29.04 | With visual indication |
| | 29.05 | Detector detail |
| | 30.01 | Density or specific gravity |
| | 31.01 | Ambient air |
| | 31.03 | Impurity |
| | 31.04 | Pressure |
| | 31.05 | Detector detail |
| | 31.07 | Particular separator |
| | 32R | SPECIFIC GRAVITY OR DENSITY OF LIQUID OR SOLID |
| | 433 | With weighing feature |
| | 438 | Hydrostatic pressure type |
| | 440 | Multiple floats of graduated density |
| | 441 | Portable hand manipulable syringe type |
| | 444 | Freely vertical reciprocable float with carried indicium |
| | 445 | Continuous test fluid supply |
| | 446 | With section means |
| | 447 | With liquid level responsive gauge or compensator |
| | 448 | Float structure |
| | 451 | Float operated indicator |
| | 32A | Involving vibration of substance or the measuring apparatus |
| | 35.01 | ENGINE DETONATION (E.G., KNOCK) |
| | 35.02 | Fuel rating (e.g., octane rating) |
| | 35.03 | Combustion signal compared to reference signal varied by a condition of the engine |
| | 35.06 | Combustion signal compared to a fixed reference signal or utilizing a threshold value |
| | 35.07 | Specific type of detonation sensor |
| | 35.14 | EXPLOSIVE |
| | 35.15 | By time measurement (e.g., burning rate, detonation velocity) |
| | 35.16 | Electric sensor |
| | 35.17 | Safety feature or containment structure |
| | 36 | ILLUMINATING FLUID |
| | 37 | WITH FLUID PRESSURE |
| | 37.5 | Dimension, shape, or size |
| | 38 | Porosity or permeability |
| | 39 | Fluid pressure brake system or unit |
| | 40 | Leakage |
| | 40.5R | Fluid handling conduit in situ |
| | 40.7 | By probe gas, vapor, or powder |
| | 41 | Conveyor feed |
| | 45.5 | With immersion |
| | 46 | Between fitted parts (e.g., joints) |
| | 49 | Pneumatic tire |
| | 49.1 | Pipe |
| | 49.2 | Receptacle |
| | 49.4 | With ram pressure inducer |
| | 49.5 | Pipe |
| | 49.7 | Motor part or auxiliary |
| | 49.8 | Clamp, plug, or sealing feature |
| | 52 | TESTING SEALED RECEPTACLE |
| | 53.01 | LIQUID ANALYSIS OR ANALYSIS OF THE SUSPENSION OF SOLIDS IN A LIQUID |
| | 53.02 | Butter fat content |
| | 53.03 | Paper or wood suspension (e.g., paper or wood pulp) |
| | 53.04 | By measuring fluid flow characteristic (e.g., by volume or rate of flow or by change in fluid level) |
| | 53.05 | Lubricant testing |
| | 54.01 | Viscosity |
| | 54.02 | Combined with other measuring means |
| | 54.03 | Of concrete (e.g., slump indicator) |
| | 54.04 | Friction tube (e.g., capillary) |
| | 54.05 | Plural tubes |
| | 54.07 | By time interval of travel or flow rate measuring |
| | 54.09 | By pressure measuring |
| | 54.11 | Orifice, nozzle, or extrusion means |
| | 54.12 | Plural fluids (e.g., comparison) |
| | 54.13 | By time interval of travel or flow rate measuring |
| | 54.14 | By force, pressure, or displacement measuring |
| | 54.15 | Gravity movement of an object in a liquid (e.g., a bubble) |
| | 54.16 | With detail of temperature or pressure regulating or compensating means |
| | 54.17 | Using a reference fluid |
| | 54.18 | With means for restoring an object to its initial starting position (e.g., magnetic or fluid means) |
| | 54.19 | Including detail of a timing detection circuit |
| | 54.21 | Including an object concentricity guide means |
| | 54.22 | Adhesion between wetted surfaces |
| | 54.23 | Force reactance to member driven therein |
| | 54.24 | By vibration |
| | 54.25 |  Dampening effect (e.g., frequency, amplitude, speed, or power measurement) |
| | 54.27 | With detail (e.g., circuitry) of a drive means or a detecting means |
| | 54.28 | Rotationally driven member |
| | 54.29 | Comparator |
| | 54.31 | By measuring the driving force or the speed of the driven member |
| | 54.32 | By measuring an opposed drag force |
| | 54.35 | Including detail of a motor drive, a stator, or a housing structure of a motor |
| | 54.36 | Penetrometer |
| | 54.37 | By movement or displacement between shearing surfaces |
| | 54.38 | Detector detail |
| | 54.39 | Shearing torque between parallel surfaces |
| | 54.41 | Vibration |
| | 54.42 | Thermal |
| | 54.43 | With detail of a pressure or a temperature regulating means |
| | 60.11 | Cleaning or foaming ability |
| | 61.41 | Content or effect of a constituent of a liquid mixture |
| | 61.42 | Metallic particle constituent |
| | 61.43 | Liquid constituent of a liquid mixture |
| | 61.44 | Plural liquid constituent (e.g., multiphase liquid) |
| | 61.46 | By thermal measurement |
| | 61.47 | By pressure measurement |
| | 61.48 | By optical irradiation |
| | 61.49 | By vibration |
| | 61.51 | Buoyant detector |
| | 61.52 | Chromatography |
| | 61.53 | Column detail |
| | 61.54 | Paper or thin layer type |
| | 61.55 | Including sampling, sample handling, or sample preparation |
| | 61.56 | Detail of fluid handling means (e.g., valve, control, etc.) |
| | 61.57 | With detail of compensation or regulating means |
| | 61.58 | Detector detail |
| | 61.59 | With detail of sampling, sample handling, or sample preparation |
| | 61.61 | Detector detail |
| | 61.62 | Depositing characteristic |
| | 61.63 | Settling or filtering ability |
| | 61.71 | For measuring solid components (e.g., particles) |
| | 61.72 | By separation and subsequent measurement (e.g., by weighing, X-ray or microscope, etc.) |
| | 61.73 | By flowing through barrier or restriction and measuring flow effect (e.g., pressure, volume of or rate of flow) |
| | 61.75 | Vibration |
| | 61.76 | By thermal measurement |
| | 61.78 | By pressure measurement |
| | 61.79 | By vibration |
| | 64.41 | Gelling or coagulation |
| | 64.44 | Vapor-liquid ratio |
| | 64.45 | Vapor pressure |
| | 64.47 | Osmotic pressure (e.g., diffusion characteristic) |
| | 64.48 | Surface tension |
| | 64.53 | By vibration |
| | 64.54 | Molecular weight |
| | 64.55 | Interface |
| | 64.56 | Sampler, constituent separation, sample handling, or sample preparation |
| | 65.01 | CENTER OF GRAVITY; TURNING MOMENT; METACENTRIC HEIGHT |
| | 65.02 | Spherical specimen |
| | 65.03 | Ball driving sporting implement (e.g., golf club, baseball bat, etc.) |
| | 65.04 | Watercraft (e.g., metacentric height) |
| | 65.05 | Air or space vehicle |
| | 65.07 | Dynamic |
| | 65.09 | Electric sensor |
| | 66 | ROTOR UNBALANCE |
| | 455 | Propeller, impeller, or fluid coupling |
| | 457 | In situ |
| | 459 | Combined static and dynamic |
| | 460 | Dynamic (spinning) |
| | 461 | Mass centering |
| | 462 | With electrical sensor and indicator |
| | 468 | With counterbalancing means |
| | 469 | By radially and circumferentially adjustable weights |
| | 470 | By circumferentially adjustable weights |
| | 471 | With vibratable mount feature |
| | 480 | Gravitational moment turns rotor about spin axis |
| | 482 | Gravitational moment tilts rotor about axis transverse to spin axis |
| | 487 | Tool and adjunct |
| | 570 | VIBRATION |
| | 570.5 | Acoustic levitation |
| | 571 | Test chamber |
| | 572 | Loose object detection |
| | 573 | Hardness or compliance |
| | 574 | Mechanical impedance |
| | 577 | Fatigue study |
| | 579 | Resonance, frequency, or amplitude study |
| | 580 | Including weight determination |
| | 581 | Including axial force determination |
| | 582 | Including structural bond evaluation |
| | 583 | Of aircraft or related structural element |
| | 584 | By mechanical waves |
| | 585 | Including ear or hearing testing |
| | 586 | Reverberation |
| | 587 | Acoustic emission |
| | 588 | Structural bond evaluation |
| | 589 | Acoustical impedance |
| | 590 | In detection of a liquid reaction, a chemical reaction, or a nuclear reaction |
| | 591 | Listening or sound tube |
| | 592 | Fluid, fluid leak, or pipe flaw detection |
| | 593 | Bearing, gear, or related moving mechanism |
| | 594 | Soil or building structure |
| | 595 | Frangible |
| | 596 | Beamed |
| | 597 | Velocity or propagation time measurement |
| | 599 | Attenuation measurement |
| | 601 | Having plural, diverse forms of radiant energy |
| | 602 | With signal analyzing or mathematical processing |
| | 603 | Acoustic holography |
| | 606 | Imaging of discontinuity with stationary sonic transmitter |
| | 609 | Measuring or testing system having threshold, gating, delay, or blocking means |
| | 610 | Electronic gating |
| | 611 |  Adjustably responsive to information signal |
| | 612 | Plural gating |
| | 613 | Of noise |
| | 614 | Of signals to pass only echoes from within test body |
| | 615 | Of signals to pass only echoes from front surface or flaw and from rear surface of test body |
| | 616 | Of signals to pass only echoes from rear surface of test body |
| | 617 | Having mechanical delay or mechanical blocking |
| | 618 | Measuring or testing system having scanning means |
| | 627 | By reflected wave |
| | 628 | Having plural sonic type transmitters or receivers tranducers |
| | 629 | Having unitary sonic type transmitter-receiver transducer |
| | 632 | Sonic wave transmitter or receiver transducer |
| | 633 | Having transducer scanning means |
| | 634 | Automatic transducer positioning |
| | 635 | Rolling contact |
| | 636 |  On railroad rails |
| | 637 | Around cylindrical object |
| | 638 | Along cylindrical object |
| | 639 | Transducer forms wheel or is within a wheel |
| | 640 | Scanning curved surface in direction of curvature |
| | 641 | Plural sonic transmitters or receivers |
| | 642 | Having wave shaping means |
| | 643 | Nonvibrating transducer |
| | 644 | Having significant coupling means |
| | 645 | Acoustic parameter |
| | 649 | Sensing apparatus |
| | 650 | Torsional |
| | 651 | Vibratable reed |
| | 652 | With inertia element |
| | 655 | With light beam indicator |
| | 658 | With electrically controlled indicator |
| | 662 | Vibrator |
| | 73 | MOISTURE CONTENT OR ABSORPTION CHARACTERISTIC OF MATERIAL |
| | 74 | By residual capacity measurement |
| | 75 | By heat conductivity |
| | 76 | By desiccation or extraction |
| | 77 | By wet and dry bulb temperature |
| | 78 | HARDNESS |
| | 86 | EMBRITTLEMENT OR EROSION |
| | 87 | DUCTILITY OR BRITTLENESS |
| | 760 | SPECIMEN STRESS OR STRAIN, OR TESTING BY STRESS OR STRAIN APPLICATION |
| | 761 | Threaded fastener stress |
| | 762 | Indicating coating or sheet providing direct visual indication (e.g., cracking, color change) |
| | 763 | Specified electrical sensor or system |