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Class Information
Number: 137/118
Name: Fluid handling >

Sub-classes under this class:

Class Number Class Name Patents
137/1 Processes 941
137/123 Siphons 15
137/15.1 Highspeed fluid intake means (e.g., jet engine intake) 173
137/154 Diverse fluid containing pressure systems 41
137/215 Back flow prevention by vacuum breaking (e.g., anti-siphon devices) 18
137/219 Larner-johnson type valves; i.e., telescoping internal valve in expanded flow line section 98
137/223 Inflatable article (e.g., tire filling chuck and/or stem) 308
137/234.6 With vehicle guide or support, e.g., service station 73
137/236.1 Distribution systems involving geographic features 248
137/237 With cleaner, lubrication added to fluid or liquid sealing at valve interface 26
137/247 With liquid valves or liquid trap seals 14
137/255 Plural tanks or compartments with parallel flow 109
137/268 With holder for solid, flaky or pulverized material to be dissolved or entrained 434
137/269 Convertible 359
137/272 Hydrant type 47
137/309 Reversing valves - regenerative furnace type 25
137/312 With leakage or drip collecting 812
137/315.01 With repair, tapping, assembly, or disassembly means 191
137/330 Non-valving motion of the valve or valve seat 21
137/334 With heating or cooling of the system 164
137/342 With fluid system support for workman or non-system material 12
137/343 With casing, support, protector or static constructional installations 138
137/38 Control by change of position or inertia of system 241
137/383 With lock or seal 88
137/386 Liquid level responsive or maintaining systems 132
137/454.2 Removable valve head and seat unit 275
137/455 Line condition change responsive valves 38
137/47 Speed responsive valve control 23
137/544 With means for separating solid material from the fluid 146
137/551 With indicator, register, recorder, alarm or inspection means 268
137/560 Combined 116
137/561R Systems 118
137/59 Freeze condition responsive safety systems 90
137/65 Combustion failure responsive fuel safety cut-off for burners 25
137/67 Destructible or deformable element controlled 124
137/78.1 Ambient condition change responsive 34
137/797 Frangible 98
137/798 With coupling 74
137/800 With closure 60
137/801 Faucets and spouts 510
137/802 Miscellaneous 16
137/803 Flow affected by fluid contact, energy field or coanda effect (e.g., pure fluid device or system) 49
137/82 Pressure modulating relays or followers 163
137/87.01 Self-proportioning or correlating systems 39
137/900 Bumpless manual to automatic relays 1
137/901 Biased ball valves with operators 120
137/902 Slush pump check valves 30
137/903 Rubber valve springs 64
137/904 Cushion check valves 25
137/905 Rotary valves for multiple gas burners 2
137/906 Valves biased by fluid "springs" 81
137/907 Vacuum-actuated valves 289
137/908 Respirator control 103
137/909 Magnetic fluid valve 46
137/910 Destructible or deformable element constructed of specific material 61

Patents under this class:

Patent Number Title Of Patent Date Issued

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