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Class Information
Number: 261/72
Name: Gas and liquid contact apparatus >
Description:

Sub-classes under this class:

Class Number	Class Name	Patents
261/1	Miscellaneous	39
261/127	With external supply or removal of heat	29
261/158	Indirect interchange or heat between contact fluids	21
261/16	Multiple gas	51
261/18.1	Multiple diverse liquids	57
261/19	Fluid distribution	25
261/2	With liquid separations	9
261/75	Contact devices	33
261/DIG.1	Auxiliary air inlet carburetors	35
261/DIG.10	Steam heaters and condensers	37
261/DIG.11	Cooling towers	355
261/DIG.12	Carburetor venturi	15
261/DIG.13	Desuperheaters	29
261/DIG.14	Display stands	9
261/DIG.15	Duct humidifiers	65
261/DIG.16	Cream whipping	35
261/DIG.17	Odorizers	59
261/DIG.18	Dashpots	20
261/DIG.19	Degassers	84
261/DIG.2	Airplane	17
261/DIG.20	Deicers for carburetors	16
261/DIG.21	Drawing excess fuel from carbureting passage	14
261/DIG.22	Faucet aerators	7
261/DIG.23	Fuel feeding valves	5
261/DIG.24	Fuel feeding valve retaining	1
261/DIG.25	Fuel spread out into a film	3
261/DIG.26	Foam	191
261/DIG.27	Gas circulated in circuit	30
261/DIG.28	Blood oxygenators	136
261/DIG.29	Heaters submerged in liquid	4
261/DIG.3	Air cooling	53
261/DIG.30	Tray heaters	0
261/DIG.31	Heaters	2
261/DIG.32	Heaters and condensers	10
261/DIG.33	Heaters, spray	0
261/DIG.34	Automatic humidity regulation	28
261/DIG.35	Air line lubricators	0
261/DIG.36	Carburetor manifolds	2
261/DIG.37	Modern pumps diaphragm	2
261/DIG.38	Needle valves	111
261/DIG.39	Liquid feeding nozzles	126
261/DIG.4	Auto humidifiers	38
261/DIG.40	Oil filter for fuel entering nozzles or float chamber	1
261/DIG.41	Pad retaining means in humidifiers and air conditioners	47
261/DIG.42	Ozonizers	102
261/DIG.43	Air coolers	25
261/DIG.44	Overflow trough	25
261/DIG.45	Processes carburetors	1
261/DIG.46	Residue prevention in humidifiers and air conditioners	94
261/DIG.47	Swing diffusers	21
261/DIG.48	Sonic vibrators	158
261/DIG.49	Suction operated feed valve	3
261/DIG.50	Surge prevention in carburetors	28
261/DIG.51	Carburetors with supercharging blowers	18
261/DIG.52	Carburetor with valves	2
261/DIG.53	Valve actuation	0
261/DIG.54	Venturi scrubbers	155
261/DIG.55	Reatomizers	46
261/DIG.56	Variable venturi	109
261/DIG.57	Interchangeable chore tube	8
261/DIG.58	Choke tube having plurality of leaves	6
261/DIG.59	Choke tube leaves flexible	3
261/DIG.6	Backfire	10
261/DIG.60	Duplex barrels	2
261/DIG.61	Longitudinally reciprocating choke tube (along air passage)	1
261/DIG.62	Longitudinally reciprocating choke tube having movable parts	0
261/DIG.63	Longitudinally reciprocating choke tube, throttle-operated	5
261/DIG.64	Longitudinally reciprocating choke tube, suction-operated	4
261/DIG.65	Vaporizers	408
261/DIG.66	Water injection to prevent detonation	5
261/DIG.67	Carburetors with vented bowl	73
261/DIG.68	Diaphragm-controlled inlet valve	122
261/DIG.69	Fluid amplifiers in carburetors	9
261/DIG.7	Carbonators	287
261/DIG.70	Sewage aerators; diffusers	47
261/DIG.71	Sewage aerators; rotating	16
261/DIG.72	Packing elements	277
261/DIG.73	Carburetor primers; ticklers	3
261/DIG.74	Valve actuation; electrical	165
261/DIG.75	Flowing liquid aspirates gas	429
261/DIG.76	Steam	92
261/DIG.77	Plume abatement	55
261/DIG.78	Sonic flow	81
261/DIG.79	Cooling ponds	15
261/DIG.8	Carburetor primers	94
261/DIG.80	Electrical treatment	27
261/DIG.81	Percolation control	35
261/DIG.82	Upper end injectors	46
261/DIG.83	Fuel vapor generation	43
261/DIG.84	Tamperproof	57
261/DIG.85	Droplet catchers	21
261/DIG.86	Cooling tower ice prevention	4
261/DIG.87	Cooling tower power generators	11
261/DIG.88	Aroma dispensers	254
261/DIG.9	Furnace gas scrubbers	117