US Patent Class 494-- IMPERFORATE BOWL: CENTRIFUGAL SEPARATORS-- MAIN HEADINGS

US Patent Class 494
IMPERFORATE BOWL: CENTRIFUGAL SEPARATORS-- Main Headings

		CLASS NOTES
1	DF	WITH CONDITION RESPONSIVE MEANS {3}
10	DF	WITH MEANS FOR INDICATING, INSPECTING, MEASURING, SIGNALING OR TESTING
11	DF	WITH CYCLIC OR TIME CONTROL MEANS
12	DF	INCLUDING MEANS OR STRUCTURE FOR PROMOTING SAFETY
13	DF	WITH MEANS FOR EXCHANGING HEAT {1}
15	DF	WITH MEANS FOR LUBRICATING
16	DF	INCLUDING PLURALITY OF MINIATURE BOWLS (E.G., TEST TUBES) DISTRUBUTED ABOUT ROTATABLE CARRIER AND READILY REMOVABLE THEREFROM {4}
22	DF	INCLUDING INTRODUCTION OF DIFFERING-WEIGHT FLUIDS (E.G., LIQUIDS) FOR COUNTERCURRENT FLOW
23	DF	WITH MEANS FOR FURNISHING AUXILIARY FLUID TO MATERIAL OR APPARATUS {4}
31	DF	INCLUDING PLURALITY OF SEPARATE AND DISTINCT BOWLS {3}
35	DF	BOWL AND MEANS EXTERNAL THEREOF FOR RECIRCULATING MATERIAL
36	DF	WITH MEANS FOR FILTERING
37	DF	PROCESS
38	DF	INCLUDING SEALING MEANS {3}
42	DF	INCLUDING DRIVEN MEANS AT LEAST PARTIALLY EXTERNAL OF BOWL FOR MOVING MATERIAL THERETO OR THEREFROM
43	DF	ROTATABLE BOWL {16}
82	DF	INCLUDING VIBRATION DAMPING MEANS
83	DF	INCLUDING BEARING STRUCTURE
84	DF	INCLUDING SPECIFIC DEVICE OR STRUCTURE FOR DRIVING OR CONTROLLING BOWL
85	DF	MISCELLANEOUS
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		CROSS-REFERENCE ART COLLECTIONS
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900	DF	INVOLVING MIXTURE CONTAINING ONE OR MORE GASES
901	DF	INVOLVING MIXTURE CONTAINING OIL
902	DF	INVOLVING THE USE OF MERCURY