US Patent Class 418
ROTARY EXPANSIBLE CHAMBER DEVICES-- Main Headings



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Current as of: June, 1999
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CLASS NOTES
1  DF  METHODS
2  DF  WITH SIGNAL, INDICATOR OR TRANSPARENT INSPECTION MEANS
3  DF  DIVERSE ROTARY EXPANSIBLE CHAMBER DEVICES
4  DF  WORKING MEMBER OR CYLINDER SURFACE HAS ALTERNATE LINEAR AND CURVILINEAR MOVEMENT (E.G., ENDLESS)
5  DF  MULTISTAGE {7}
14  DF  WITH DELAYED LOAD
15  DF  WITH PLURAL WORKING FLUID INLET OR OUTLET PASSAGES
16  DF  WITH CHANGEABLE WORKING CHAMBER MAGNITUDE {10}
32  DF  SELF-ACTING UNIDIRECTIONAL FLOW WITH REVERSE ROTATION OR REVERSE FLOW WITH UNIDIRECTIONAL ROTATION
33  DF  INTERMITTENTLY ACCELERATED AND RECEDING MEMBERS ROTATE IN SAME PATH (ALTERNATING PISTON TYPE) {2}
39  DF  CONVERTIBLE OR CHANGEABLE BY ASSEMBLY OR DISASSEMBLY
40  DF  SPEED CONTROLLED {3}
45  DF  COLLAPSIBLE PROGRESSIVELY DEFORMED WORKING CHAMBER WALL
46  DF  WITH REMOVAL OR ACCOMMODATION OF SOLID FOREIGN MATERIAL IN WORKING FLUID {1}
48  DF  UNLIKE HELICAL SURFACES ON RELATIVELY WOBBLING ROTATING MEMBER AND ENCOMPASSING CYLINDER (E.G., MOINEAU TYPE)
49  DF  NUTATING WORKING MEMBER {3}
54  DF  WORKING MEMBER HAS PLANETARY OR PLANETATING MOVEMENT {6}
68  DF  ROTATING INTERNAL MEMBER ROTATES AND OSCILLATES OR RECIPROCATES
69  DF  WITH FRANGIBLE DRIVE CONNECTION OR CLUTCH
70  DF  WITH RAPID DISASSEMBLY FEATURE (I.E., WITHOUT TOOLS)
71  DF  PRESSURE FLUID RADIALLY BALANCES WORKING OR ROTATING ABUTMENT MEMBER {3}
75  DF  GROOVED ABUTTING CYLINDER-ROTATING MEMBER END SURFACES {7}
83  DF  HEAT EXCHANGE OR NON-WORKING FLUID LUBRICATING OR SEALING {13}
102  DF  SHAFT OR TRUNNION LUBRICATION OR SEALING BY DIVERTED WORKING FLUID PORTION
103  DF  WORKING MEMBER PERIPHERAL SURFACE COMPRISES RELATIVELY CIRCUMFERENTIALLY MOVABLE SEGMENTS
104  DF  WITH MECHANICAL SEALING {14}
150  DF  WORKING CHAMBER SURFACE EXPRESSED MATHEMATICALLY
151  DF  WEIGHT BALANCED WORKING MEMBER OR PARTITION
152  DF  NON-METALLIC WORKING MEMBER, CYLINDER OR PARTITION {1}
156  DF  RESILIENT WORKING MEMBER, CYLINDER OR PARTITION
157  DF  SHOCK OR PRESSURE RELIEVING YIELDABLE PERIPHERAL WORKING MEMBER OR CYLINDER SURFACE PORTION
158  DF  MAGNETICALLY BIASED VANE OR ABUTMENT
159  DF  ADJUSTABLE WORKING CHAMBER PERIPHERAL WALL CONTROLS WORKING FLUID FLOW
160  DF  MOVING CYLINDER {1}
178  DF  WITH WEAR SURFACE TREATMENT OR INTEGRALLY PLATED WEAR LAYER
179  DF  SPECIFIC MATERIAL
180  DF  APERTURED BYPASS TO PRESSURIZE OR RELIEVE WORKING CHAMBER ZONE OF INTERMEDIATE PRESSURE
181  DF  COMBINED
182  DF  RELATIVELY MOVABLE WORKING MEMBER AND DRIVE SHAFT AXES
183  DF  WITH SUPPLY OR EXHAUST PASSAGE IN WORKING MEMBER {4}
189  DF  TRAPPED FLUID RELIEF {1}
191  DF  INTERENGAGING ROTATING MEMBERS {9}
207  DF  RELATIVELY MOVING WORK TRANSMITTING BARRIERS MOVE IN SEPARATE INTERSECTING CHAMBERS
208  DF  MOVABLE INTERMEDIATE PARTITION ENGAGES PERIPHERIES OF PLURAL SPACED WORKING MEMBERS
209  DF  PLURAL WORKING CHAMBERS {2}
220  DF  HELICAL WORKING MEMBER
221  DF  MOVING ABUTMENT AND VANE
222  DF  SEPARABLE ABUTMENT
223  DF  WITH SECONDARY VANE OR ABUTMENT MOVING MEANS
224  DF  VALVED VANE OR ABUTMENT
225  DF  VANE OR ABUTMENT COMPRISES ROTATABLE ELEMENT {2}
228  DF  AXIALLY MOVING VANE OR ABUTMENT {2}
234  DF  TAPERED VANE OR ABUTMENT (E.G., WEDGE SHAPED)
235  DF  WEAR ELEMENTS OR ANTIFRICTION MEANS IN VANE OR ABUTMENT SLOT
236  DF  NON-RADIALLY POSITIONED SLIDING VANE OR ABUTMENT {2}
239  DF  ALTERNATELY USABLE VANE OR ABUTMENT STRUCTURE FOR REVERSE WORKING MEMBER ROTATION
240  DF  INTERCONNECTED ABUTMENTS
241  DF  ABUTMENT OR VANE HAS CONCURRENT ROCKING AND RADIALLY SLIDING MOVEMENT
242  DF  SPACED OSCILLATING ABUTMENT PORTIONS ENGAGE WORKING MEMBER
243  DF  POSITIVELY ACTUATED ABUTMENT {4}
252  DF  WITH PROVISION FOR QUICK VANE REPLACEMENT
253  DF  INTERCONNECTED VANES {3}
259  DF  POSITIVELY ACTUATED VANE {4}
270  DF  MISCELLANEOUS
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DIGEST
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DIG 1  DF  NON-WORKING FLUID SEPARATION