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Class   137FLUID HANDLING
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[List of Pre Grant Publications for class 137 subclass 1][List of Patents for class 137 subclass 1]1 PROCESSES
[List of Pre Grant Publications for class 137 subclass 2][List of Patents for class 137 subclass 2]2 Subclass 2 indent level is 1 With control of flow by a condition or characteristic of a fluid
[List of Pre Grant Publications for class 137 subclass 3][List of Patents for class 137 subclass 3]3 Subclass 3 indent level is 2 Mixing of plural fluids of diverse characteristics or conditions
 [List of Pre Grant Publications for class 137 subclass 8][List of Patents for class 137 subclass 8]8 Subclass 8 indent level is 2 For producing uniform flow
 [List of Pre Grant Publications for class 137 subclass 9][List of Patents for class 137 subclass 9]9 Subclass 9 indent level is 2 For producing proportionate flow
 [List of Pre Grant Publications for class 137 subclass 10][List of Patents for class 137 subclass 10]10 Subclass 10 indent level is 2 By speed of fluid
 [List of Pre Grant Publications for class 137 subclass 11][List of Patents for class 137 subclass 11]11 Subclass 11 indent level is 2 For regulating boiler feed water level
 [List of Pre Grant Publications for class 137 subclass 12][List of Patents for class 137 subclass 12]12 Subclass 12 indent level is 2 By fluid pressure
 [List of Pre Grant Publications for class 137 subclass 12.5][List of Patents for class 137 subclass 12.5]12.5 Subclass 12.5 indent level is 1 Carbonated beverage handling processes
 [List of Pre Grant Publications for class 137 subclass 13][List of Patents for class 137 subclass 13]13 Subclass 13 indent level is 1 Affecting flow by the addition of material or energy
 [List of Pre Grant Publications for class 137 subclass 14][List of Patents for class 137 subclass 14]14 Subclass 14 indent level is 1 Involving pressure control
[List of Pre Grant Publications for class 137 subclass 15.01][List of Patents for class 137 subclass 15.01]15.01 Subclass 15.01 indent level is 1 Cleaning, repairing, or assembling
 [List of Pre Grant Publications for class 137 subclass 15.02][List of Patents for class 137 subclass 15.02]15.02 Subclass 15.02 indent level is 2 Repairing or assembling hydrant (e.g., fireplug, etc.)
 [List of Pre Grant Publications for class 137 subclass 15.03][List of Patents for class 137 subclass 15.03]15.03 Subclass 15.03 indent level is 2 Gas or water meter repairing or assembling
[List of Pre Grant Publications for class 137 subclass 15.04][List of Patents for class 137 subclass 15.04]15.04 Subclass 15.04 indent level is 2 Fluid cleaning or flushing
 [List of Pre Grant Publications for class 137 subclass 15.07][List of Patents for class 137 subclass 15.07]15.07 Subclass 15.07 indent level is 2 Mechanical cleaning (e.g., pig, etc.)
[List of Pre Grant Publications for class 137 subclass 15.08][List of Patents for class 137 subclass 15.08]15.08 Subclass 15.08 indent level is 2 Repairing, securing, replacing, or servicing pipe joint, valve, or tank
[List of Pre Grant Publications for class 137 subclass 15.18][List of Patents for class 137 subclass 15.18]15.18 Subclass 15.18 indent level is 2 Valve or valve element assembling, disassembling, or replacing
[List of Pre Grant Publications for class 137 subclass 15.1][List of Patents for class 137 subclass 15.1]15.1 HIGHSPEED FLUID INTAKE MEANS (E.G., JET ENGINE INTAKE)
 [List of Pre Grant Publications for class 137 subclass 15.2][List of Patents for class 137 subclass 15.2]15.2 Subclass 15.2 indent level is 1 With condition responsive control means
[List of Pre Grant Publications for class 137 subclass 38][List of Patents for class 137 subclass 38]38 CONTROL BY CHANGE OF POSITION OR INERTIA OF SYSTEM
 [List of Pre Grant Publications for class 137 subclass 39][List of Patents for class 137 subclass 39]39 Subclass 39 indent level is 1 With second control
[List of Pre Grant Publications for class 137 subclass 40][List of Patents for class 137 subclass 40]40 Subclass 40 indent level is 1 Position relative body of water (e.g., marine governors)
 [List of Pre Grant Publications for class 137 subclass 41][List of Patents for class 137 subclass 41]41 Subclass 41 indent level is 2 Float controlled
 [List of Pre Grant Publications for class 137 subclass 42][List of Patents for class 137 subclass 42]42 Subclass 42 indent level is 2 Pressure or head controlled
 [List of Pre Grant Publications for class 137 subclass 43][List of Patents for class 137 subclass 43]43 Subclass 43 indent level is 1 Vent opening or closing on tipping container
 [List of Pre Grant Publications for class 137 subclass 44][List of Patents for class 137 subclass 44]44 Subclass 44 indent level is 1 By shifting of liquid level
[List of Pre Grant Publications for class 137 subclass 45][List of Patents for class 137 subclass 45]45 Subclass 45 indent level is 1 By pendulum or swinging member
 [List of Pre Grant Publications for class 137 subclass 46][List of Patents for class 137 subclass 46]46 Subclass 46 indent level is 2 With servo connection to valve
[List of Pre Grant Publications for class 137 subclass 47][List of Patents for class 137 subclass 47]47 SPEED RESPONSIVE VALVE CONTROL
 [List of Pre Grant Publications for class 137 subclass 48][List of Patents for class 137 subclass 48]48 Subclass 48 indent level is 1 Acceleration responsive valve control
 [List of Pre Grant Publications for class 137 subclass 49][List of Patents for class 137 subclass 49]49 Subclass 49 indent level is 1 With manual valve control
 [List of Pre Grant Publications for class 137 subclass 50][List of Patents for class 137 subclass 50]50 Subclass 50 indent level is 1 Speed change and excess speed valve control
[List of Pre Grant Publications for class 137 subclass 51][List of Patents for class 137 subclass 51]51 Subclass 51 indent level is 1 With other condition responsive valve control
 [List of Pre Grant Publications for class 137 subclass 52][List of Patents for class 137 subclass 52]52 Subclass 52 indent level is 2 Governor drive failure responsive
[List of Pre Grant Publications for class 137 subclass 53][List of Patents for class 137 subclass 53]53 Subclass 53 indent level is 1 Centrifugal mass type (exclusive of liquid)
 [List of Pre Grant Publications for class 137 subclass 54][List of Patents for class 137 subclass 54]54 Subclass 54 indent level is 2 With multiple valves
 [List of Pre Grant Publications for class 137 subclass 55][List of Patents for class 137 subclass 55]55 Subclass 55 indent level is 2 Periodically actuated valve
 [List of Pre Grant Publications for class 137 subclass 56][List of Patents for class 137 subclass 56]56 Subclass 56 indent level is 2 Rotating valve and rotating governor
 [List of Pre Grant Publications for class 137 subclass 57][List of Patents for class 137 subclass 57]57 Subclass 57 indent level is 2 Excess speed responsive
 [List of Pre Grant Publications for class 137 subclass 58][List of Patents for class 137 subclass 58]58 Subclass 58 indent level is 2 With fluid servo-motor
[List of Pre Grant Publications for class 137 subclass 59][List of Patents for class 137 subclass 59]59 FREEZE CONDITION RESPONSIVE SAFETY SYSTEMS
 [List of Pre Grant Publications for class 137 subclass 60][List of Patents for class 137 subclass 60]60 Subclass 60 indent level is 1 With freeze waste
 [List of Pre Grant Publications for class 137 subclass 61][List of Patents for class 137 subclass 61]61 Subclass 61 indent level is 1 Stop and waste
 [List of Pre Grant Publications for class 137 subclass 62][List of Patents for class 137 subclass 62]62 Subclass 62 indent level is 1 Low temperature responsive drains
[List of Pre Grant Publications for class 137 subclass 65][List of Patents for class 137 subclass 65]65 COMBUSTION FAILURE RESPONSIVE FUEL SAFETY CUT-OFF FOR BURNERS
 [List of Pre Grant Publications for class 137 subclass 66][List of Patents for class 137 subclass 66]66 Subclass 66 indent level is 1 Thermo-electric
[List of Pre Grant Publications for class 137 subclass 67][List of Patents for class 137 subclass 67]67 DESTRUCTIBLE OR DEFORMABLE ELEMENT CONTROLLED
[List of Pre Grant Publications for class 137 subclass 68.11][List of Patents for class 137 subclass 68.11]68.11 Subclass 68.11 indent level is 1 Destructible element
 [List of Pre Grant Publications for class 137 subclass 68.12][List of Patents for class 137 subclass 68.12]68.12 Subclass 68.12 indent level is 2 Combined destructible and fusible element
 [List of Pre Grant Publications for class 137 subclass 68.13][List of Patents for class 137 subclass 68.13]68.13 Subclass 68.13 indent level is 2 Explosive actuation
[List of Pre Grant Publications for class 137 subclass 68.14][List of Patents for class 137 subclass 68.14]68.14 Subclass 68.14 indent level is 2 Separable valve coupling or conduit
[List of Pre Grant Publications for class 137 subclass 68.16][List of Patents for class 137 subclass 68.16]68.16 Subclass 68.16 indent level is 2 Tensile or sheer pin or bolt
 [List of Pre Grant Publications for class 137 subclass 68.18][List of Patents for class 137 subclass 68.18]68.18 Subclass 68.18 indent level is 2 With alarm or indicator
[List of Pre Grant Publications for class 137 subclass 68.19][List of Patents for class 137 subclass 68.19]68.19 Subclass 68.19 indent level is 2 Rupture disc
 [List of Pre Grant Publications for class 137 subclass 69][List of Patents for class 137 subclass 69]69 Subclass 69 indent level is 2 With counterbalancing element
 [List of Pre Grant Publications for class 137 subclass 70][List of Patents for class 137 subclass 70]70 Subclass 70 indent level is 2 Frangible element returns pressure responsive valve
 [List of Pre Grant Publications for class 137 subclass 71][List of Patents for class 137 subclass 71]71 Subclass 71 indent level is 2 Having pressure responsive valve
[List of Pre Grant Publications for class 137 subclass 72][List of Patents for class 137 subclass 72]72 Subclass 72 indent level is 1 Heat destructible or fusible
 [List of Pre Grant Publications for class 137 subclass 73][List of Patents for class 137 subclass 73]73 Subclass 73 indent level is 2 With second sensing means
 [List of Pre Grant Publications for class 137 subclass 74][List of Patents for class 137 subclass 74]74 Subclass 74 indent level is 2 In fluid flow path
[List of Pre Grant Publications for class 137 subclass 75][List of Patents for class 137 subclass 75]75 Subclass 75 indent level is 2 Safety cut-off
[List of Pre Grant Publications for class 137 subclass 78.1][List of Patents for class 137 subclass 78.1]78.1 AMBIENT CONDITION CHANGE RESPONSIVE
[List of Pre Grant Publications for class 137 subclass 78.2][List of Patents for class 137 subclass 78.2]78.2 Subclass 78.2 indent level is 1 For controlling soil irrigation
 [List of Pre Grant Publications for class 137 subclass 78.3][List of Patents for class 137 subclass 78.3]78.3 Subclass 78.3 indent level is 2 Soil moisture sensing
 [List of Pre Grant Publications for class 137 subclass 78.4][List of Patents for class 137 subclass 78.4]78.4 Subclass 78.4 indent level is 1 Burner gas cutoff
[List of Pre Grant Publications for class 137 subclass 78.5][List of Patents for class 137 subclass 78.5]78.5 Subclass 78.5 indent level is 1 Atmospheric
[List of Pre Grant Publications for class 137 subclass 79][List of Patents for class 137 subclass 79]79 Subclass 79 indent level is 2 Temperature
 [List of Pre Grant Publications for class 137 subclass 81.1][List of Patents for class 137 subclass 81.1]81.1 Subclass 81.1 indent level is 2 Pressure
 [List of Pre Grant Publications for class 137 subclass 81.2][List of Patents for class 137 subclass 81.2]81.2 Subclass 81.2 indent level is 1 Underwater
[List of Pre Grant Publications for class 137 subclass 803][List of Patents for class 137 subclass 803]803 FLOW AFFECTED BY FLUID CONTACT, ENERGY FIELD OR COANDA EFFECT (E.G., PURE FLUID DEVICE OR SYSTEM)
[List of Pre Grant Publications for class 137 subclass 804][List of Patents for class 137 subclass 804]804 Subclass 804 indent level is 1 Responsive to condition external of system
 [List of Pre Grant Publications for class 137 subclass 805][List of Patents for class 137 subclass 805]805 Subclass 805 indent level is 2 And causing change or correction of sensed condition
 [List of Pre Grant Publications for class 137 subclass 806][List of Patents for class 137 subclass 806]806 Subclass 806 indent level is 1 Utilizing diverse fluids
 [List of Pre Grant Publications for class 137 subclass 807][List of Patents for class 137 subclass 807]807 Subclass 807 indent level is 1 Utilizing particular fluid
[List of Pre Grant Publications for class 137 subclass 808][List of Patents for class 137 subclass 808]808 Subclass 808 indent level is 1 Means to cause rotational flow of fluid (e.g., vortex generator)
 [List of Pre Grant Publications for class 137 subclass 809][List of Patents for class 137 subclass 809]809 Subclass 809 indent level is 2 Plural vortex generators
 [List of Pre Grant Publications for class 137 subclass 810][List of Patents for class 137 subclass 810]810 Subclass 810 indent level is 2 Vortex generator as control for system
 [List of Pre Grant Publications for class 137 subclass 811][List of Patents for class 137 subclass 811]811 Subclass 811 indent level is 2 Vortex generator in interaction chamber of device
[List of Pre Grant Publications for class 137 subclass 812][List of Patents for class 137 subclass 812]812 Subclass 812 indent level is 2 By tangential input to axial output (e.g., vortex amplifier)
[List of Pre Grant Publications for class 137 subclass 814][List of Patents for class 137 subclass 814]814 Subclass 814 indent level is 1 System comprising plural fluidic devices or stages
[List of Pre Grant Publications for class 137 subclass 815][List of Patents for class 137 subclass 815]815 Subclass 815 indent level is 2 Plural power inputs (e.g., parallel inputs)