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| Class 92 | EXPANSIBLE CHAMBER DEVICES |
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![[List of Pre Grant Publications for class 92 subclass 1]](../as.gif) | ![[List of Patents for class 92 subclass 1]](../ps.gif) | 1 | WITH TEMPERATURE COMPENSATION |
| | 2 | ONE WORKING MEMBER RECIPROCATES AND ANOTHER ROTATES COMMON OUTPUT MEMBER |
| | 3 | WITH DISENGAGEABLE ROTARY DRIVE FOR MOVING WORKING MEMBER |
| | 5R | WITH (1) SIGNAL OR INDICATOR OR (2) INSPECTION WINDOW IN EXPANSIBLE CHAMBER WALL PORTION |
| | 6R | EFFECTIVE AREA OF WORKING MEMBER END FACE SELECTIVELY VARIABLE |
| | 7 | WITH OVERCENTER MEANS TO BIAS WORKING MEMBER IN OPPOSITE DIRECTIONS OVER DIFFERENT PORTIONS OF STROKE |
| | 8 | WITH MEANS TO CONTROL FLOW OF NON-WORKING ARRESTING FLUID FOR WORKING MEMBER |
| | 9 |  Flow control means positioned between chambers having a common wall movable with working member |
| | 10 | Work member position control |
| | 12 | Adjustable throttle (11) |
| | 12.1 | DISPLACEMENT CONTROL OF PLURAL CYLINDERS ARRANGED IN PARALLEL, RADIAL, OR CONICAL RELATIONSHIP WITH ROTARY TRANSMISSION AXIS |
| | 12.2 | Parallel cylinders |
| | 13.1 | Having motor-operated adjustment |
| | 13.2 | Flexible wall-type working member |
| | 13.3 | Stroke of one working member adjustable relative to another |
| | 13.4 | Predetermined discrete incremental adjustment positions |
| | 13.5 | Independent adjustment of opposite stroke limits of single reciprocating working member |
| | 13.51 | Axial adjustment of spaced, rigidly interconnected working member faces |
| | 13.6 | Adjustable abutment positioned within working chamber |
| | 13.7 | BY adjusting or limiting motion of relatively movable power transmission element |
| | 13.8 | Adjustment means includes external axially extending threaded piston stem |
| | 14 | WORKING MEMBER MOVES LOAD AND LATCHING MEANS FOR LOAD |
| | 15 | WITH RELEASABLE STOP OR LATCH MEANS TO PREVENT MOVEMENT OF WORKING MEMBER |
| | 16 | With timing or delay means |
| | 17 | Engages member coaxial with and rotatable relative to working member |
| | 18 | Includes interfitting parts engageable at plural positions including position intermediate stroke limits |
| | 20 | Engages power element movable relative to working member |
| | 21R | Plural selectively operable actuators for releasable means |
| | 22 | Relatively movable working members with interdependent means |
| | 23 | Means includes element interfitting between working member and fixed part |
| | 24 |  Element actuated or retained in operative position by relatively movable fluid responsive member |
| | 27 | Fluid actuated (28) |
| | 28 | Fluid actuated (27) |
| | 29 | WITH RELEASABLE LATCH MEANS BETWEEN WORKING MEMBER AND POWER TRANSMISSION ELEMENT AXIALLY SLIDABLE THEREIN |
| | 30 | WITH RESILIENT DETENT |
| | 31 | RECTILINEARLY MOVING WORKING MEMBER AND COAXIAL OR PARALLEL ELEMENT SLIDABLY INTERENGAGED FOR RELATIVE ROTARY MOVEMENT |
| | 32 | Working fluid-actuated interengaging means permits unidirectional rotation of element relative to fixed part |
| | 33 | Element extends through working member portion |
| | 34 | BELLOWS TYPE EXPANSIBLE CHAMBER |
| | 35 | Expansible chamber formed by concentric bellows |
| | 36 | With non-bellows type expansible chamber |
| | 37 | Plural bellows |
| | 38 | Non-working liquid moved by first bellows effects movement of second bellows |
| | 39 | With common movable wall |
| | 40 | With separate biasing means |
| | 41 | With vibration damping means |
| | 42 | With separate ring-like reinforcing element abutting pleat |
| | 43 | With stop means to limit axial movement of bellows |
| | 44 | With guide means |
| | 45 | Superposed peripherally interconnected elements |
| | 47 | Specific or diverse material (103) |
| | 48 | PLURAL FLEXIBLE WALL WORKING MEMBERS |
| | 49 | Diaphragm type having working fluid contacting areas of different size |
| | 50 | Oppositely movable walls of common chamber (69) (75) |
| | 51 | MUTUALLY RELATIVELY MOVABLE CYLINDER OR SLEEVE, MEMBER SEALINGLY SLIDABLE THEREIN AND OUTER CYLINDER THEREFOR |
| | 52 | Cylinder or sleeve forms working member |
| | 53 | With additional cylinder relatively slidable exteriorly of outer cylinder |
| | 54 | ROTATING CYLINDER |
| | 58.1 | KNOCKDOWN OR FLOW CONDUIT STORAGE OR RETRIEVAL MEANS |
| | 59 | CONVERTIBLE, OR CHANGEABLE BY ASSEMBLY OR DISASSEMBLY |
| | 60 | WITH FLEXIBLE OR RESILIENTLY BIASED NON-WORKING MEMBER MOVABLE WALL IN CONSTANT COMMUNICATION WITH WORKING CHAMBER |
| | 60.5 | SELECTIVE CLEARANCE CONTROL |
| | 61 | RELATIVELY MOVABLE WORKING MEMBERS |
| | 62 | First working member moves second coaxial working member through separating abutment surfaces |
| | 64 | One a flexible wall type |
| | 65 | Rigid stem on first working member portion extends through second working member |
| | 66 | Moving cylinders |
| | 67 | Oscillating working members |
| | 68 | Interconnected with common rotatable shaft |
| | 69R | Oppositely movable walls of common chamber (50) (75) |
| | 70 |  Shaft axis parallel to axes of working members (71) |
| | 69A | One piston rod passes through opposite piston rod |
| | 69B | Single crankshaft offset from center of work chamber |
| | 71 | Shaft axis parallel to axes of working members (70) |
| | 72 | Shaft axis intersected by axes of working members |
| | 75 | Oppositely movable walls of common chamber (50) (69) |
| | 76 | Interconnected by linkage having relatively movable members |
| | 77 | GROUND EMBEDDED EXPANSIBLE CHAMBER |
| | 78 | WITH FLUID PURIFYING MEANS |
| | 80 | WITH FORCE EXERTING MEANS TO MOVE FLUID FROM NON-WORKING CHAMBER |
| | 81 | WORKING MEMBER FORMS RESERVOIR FOR NON-COMPRESSIBLE WORKING FLUID |
| | 82 | WITH MEANS TO CONTROL FLUID FLOW FROM NON-WORKING CHAMBER |
| | 83 | LIQUID POOL SEALING RELATIVELY MOVABLE CHAMBER WALLS |
| | 84 | RESILIENT MEANS INTERPOSED BETWEEN WORKING MEMBER AND RELATIVELY MOVABLE POWER TRANSMISSION ELEMENT |
| | 85R | WITH CUSHIONING MEANS EFFECTIVE OVER A PORTION ONLY OF STROKE |
| | 86 | WITH REMOVAL CONDUIT FOR LIQUID SEEPAGE FROM EXPANSIBLE CHAMBER |
| | 86.5 | PASSAGE IN CYLINDER FOR APPLICATION OF SEPARATE FLUID TO CYLINDER AND PISTON SIDE WALL INTERFACE |
| | 87 | WITH NON-SEALING CLEANING MEANS |
| | 88 | SEALED OPENING IN LONGITUDINAL WALL OF CHAMBER FOR RECEIVING WORKING MEMBER PORTION |
| | 89 | COLLAPSIBLE CHAMBER WALL PORTION (E.G., HINGED OR FLEXIBLE WALL) |
| | 90 | Wall portion formed of flexible material |
| | 91 | Envelope having restricted fluid opening |
| | 93 | Annular flexible wall portion peripherally sealed to spaced relatively fixed concentric rigid members |
| | 94 | With separate biasing means |
| | 96 | Diaphragm type |
| | 97 | Axially spaced flexible wall portions with interposed incompressible means |
| | 98R | Entire periphery secured to rigid working chamber forming wall |
| | 99 |  With undistortable member secured to central portion of diaphragm |
| | 101 | Abutment connection between diaphragm and power transmission element |
| | 102 | With separate seal means between diaphragm and member |
| | 98D | Rolling diaphragm |
| | 103R | Specific or diverse material (47) |
| | 103F | With reinforcement embedded in diaphragm |
| | 103SD | Synthetic diaphragm (non-metal and non-rubber) |
| | 103M | Metal diaphragm |
| | 104 | Corrugated |
| | 105 | Coaxial radially spaced relatively movable undistortable members joined by flexible wall |
| | 106 | FLUID CONDUIT IN CONSTANT COMMUNICATION WITH RELATIVELY ROTATABLE WORKING CHAMBER |
| | 107 | ANNULAR WORKING MEMBER OR ANNULAR LINEARLY EXTENDING CHAMBER THEREFOR |
| | 109 | PISTON WITH RIGID AXIALLY EXTENDING HOLLOW STEM |
| | 110 | Hollow stem forms axially extending fluid passage |
| | 111 | Plural laterally spaced passages |
| | 112 | Passage communicates with lateral port extending through piston side wall portion |
| | 113 | Relatively movable elongated part within stem |
| | 116 | WITH AXIALLY EXTENDING ELEMENT MOUNTED ON WORKING MEMBER FOR RELATIVE ROTARY MOVEMENT ONLY |
| | 117R | MOVING CYLINDER |
| | 120 | OSCILLATING WORKING MEMBER OR CYLINDER THEREFOR |
| | 126 | WITH DIFFERENTIAL RADIAL THRUST PRODUCING MEANS FOR WORKING MEMBER |
| | 128 | WITH ASSEMBLY OR DISASSEMBLY FACILITATING MEANS |
| | 129 | ABUTMENT CONNECTION BETWEEN WORKING MEMBER AND POWER TRANSMISSION ELEMENT |
| | 130R | WITH SEPARATE BIASING MEANS FOR WORKING MEMBER |
| | 131 | Biasing means maintains working member intermediate stroke end limits |
| | 132 | Tension spring |
| | 133 | Adjustable |
| | 134 | Fluid spring |
| | 135 | Biasing means engages working fluid contacting portion of working member |
| | 130A | Bias normally held inoperative by fluid pressure |
| | 130B | Bias other than coil spring |
| | 130C | Bias external of both expanding and contracting chamber |
| | 130D | Plural coil springs |
| | 136 | WITH TOOTHED GEAR, SPLINE OR THREAD RIGID WITH WORKING MEMBER |
| | 137 | WITH FLEXIBLE TRANSMISSION ELEMENT SECURED TO WORKING MEMBER |
| | 138 | WITH LINKAGE OR TRANSMISSION ENGAGING PORTION INTERMEDIATE SPACED WORKING MEMBER END FACES |
| | 139 | WITH CYLINDER WALL CONTACTING GUIDE ARTICULATED TO PISTON |
| | 140 | WITH LINKAGE OR TRANSMISSION HAVING RELATIVELY MOVABLE MEMBERS |
| | 141 | WITH SEPARABLE FLUID DEFLECTING SHIELD OR BAFFLE ON WORKING MEMBER |
| | 142 | WITH RESERVOIR FOR NON-COMPRESSIBLE WORKING FLUID |
| | 143 | WITH MOVEMENT DAMPING MEANS (E.G., FLUID FLOW RESTRICTOR) |
| | 144 | WITH ENCOMPASSING HEAT EXCHANGE MODIFYING SPACE OR JACKET |
| | 145 | COMBINED |
| | 146 | PLURAL UNITARILY MOUNTED CYLINDERS OR FRAME THEREFOR (161) |
| | 153 | WITH LUBRICATING MEANS |
| | 154 | Lubricant entrained by working fluid |
| | 155 | Portion of expansible chamber device includes solid lubricating material |
| | 156 | Valve means in lubricant passage |
| | 157 | Lubricant passage extends axially through articulated piston rod |
| | 158 | Piston has lubricant retaining or conducting means |
| | 161 | WITH SUPPORT OR FRAME (146) |
| | 162R | SPACED CYLINDER AND PISTON WALLS DEFINE PASSAGE BETWEEN OPPOSED PISTON SIDE WALL ENDS |
| | 163 | FLUID CONDUIT OR PORT IN FIXED WALL OF WORKING CHAMBER |
| | 165R | WITH GUIDE OR SEAL ON CYLINDER END PORTION FOR PISTON OR MEMBER MOVED BY PISTON |
| | 166 | Additional guide is spaced chamber end wall |
| | 167 | Guide movable laterally |
| | 168 | Non-metallic seal means between piston or member and end portion |
| | 165PR | Prevent rotation |
| | 169.1 | CYLINDER DETAIL |
| | 169.2 | With reinforcing member |
| | 170.1 | Nonmetallic piston contacting portion |
| | 171.1 | Cylinder or liner retained in casing by casing closure or closure associated means |
| | 172 | PISTON |
| | 173 | With rotation imparting fluid impinging surface on piston part |
| | 174 | Liquid between axially spaced side wall portions |
| | 175 | Spaced faces joined by rigid stem (e.g., spool) |
| | 176 | With enclosed insulating space in piston part |
| | 177 | Non-circular |
| | 178 | With ball or roller anti-friction means on side wall portion |
| | 179 | Articulated connecting rod end forms portions of piston face |
| | 181R | With fluid passage in piston face |
| | 182 | Passage communicates with packing receiving recess |
| | 181P | Passage thru piston to opposite chamber |
| | 186 | With ported chamber in piston part for circulating heat exchange fluid |
| | 187 | With separable means for pivotally mounting connecting rod to piston |
| | 188 | Means retained by annulus positioned about piston periphery |
| | 189 | Piston formed of separable end face and side wall portion |
| | 191 | Fastener for separable means extends through end face portion |
| | 192 | Plural integral radially extending resilient metallic sealing tongues on side wall portion |
| | 193 | With spring means for biasing side wall portion radially |
| | 194 | Biased portion comprises peripheral axially extending flexible lip |
| | 195 | Open ended hollow skirt comprises biased portion |
| | 196 | Spring part positioned in skirt slit |
| | 197 | Adjustable bias (199) |
| | 198 | Split annular type spring (200) |
| | 199 | Adjustable bias (197) |
| | 200 | Split annular type spring (198) |
| | 201 | Radially adjustable side wall portion |
| | 202 | Adjustable portion comprises open-ended hollow skirt |
| | 204 | Adjustment effected by selectively removable spacer or skim element between relatively movable parts |
| | 205 | Side wall portion positioned between relatively axially adjustable rigid end members |
| | 207 | Adjustment effected by wedge member movable relative to side wall portion (203) |
| | 208 | Open-ended hollow skirt type (e.g., trunk type) |
| | 209 | Frusto conical skirt |
| | 210 | With weight balancing means |
| | 211 | Element of diverse material extending through skirt wall abuts circumferentially extending resilient ring |
| | 212 | With nonmetallic portion |
| | 213 | End face surface includes areas of diverse material |
| | 214 | Spaced wall skirt |
| | 215 | Separate resilient elements secures end face portion to skirt portion |
| | 216 | Plural separable parts |
| | 217 | Interconnected by relative rotation of parts |
| | 219 | Interconnected without separate fastening means |
| | 220 | Threaded fastener |
| | 222 | Specific or diverse material; or welded, brazed or soldered joint |
| | 223 | Coated |
| | 224 | End face and skirt periphery of diverse material |
| | 225 | Element of diverse material for limiting radial movement of skirt part |
| | 226 | Bi-metallic restraining element |
| | 227 | Element positioned about periphery of skirt |
| | 228 | Element portion embedded in piston part |
| | 231 | Welded, brazed or soldered (260) |
| | 232 | Spaced skirt parts jointed by resilient arcuate web |
| | 233 | Oval-shaped skirt portion |
| | 234 | Skirt includes slit |
| | 237 | Circumferentially spaced portions at free end of skirt |
| | 238 | Connecting rod pin supporting boss laterally spaced from skirt portion |
| | 239 | With rib or strut means on piston part |
| | 240 | Side wall portion includes peripheral axially extending flexible lip |
| | 241 | With embedded reinforcing means in lip portion (254) |
| | 242 | Plural axially spaced lips |
| | 245 | Lip forms peripheral portion of imperforate cup shaped element |
| | 246 | Metallic lip |
| | 247 | Fluid pressure responsive axial movement of end face portion radially moves side wall portion |
| | 248 | Nonmetallic portion |
| | 249 | Flexible |
| | 255 | Plural separable parts |
| | 256 | Fastening means for parts include resilient element |
| | 257 | Side wall portion interposed between separable axially spaced rigid members |
| | 259 | Side wall portion and relatively movable piston part having abutting inclined surfaces |
| | 260 | Welded, brazed or soldered (231) |
| | 261 | MISCELLANEOUS (E.G., CRANKCASE) |
| FOREIGN ART COLLECTIONS | ||
| FOR000 | CLASS-RELATED FOREIGN DOCUMENTS |
| DIGESTS | ||
| | DIG1 | BEARING ON PISTON OR CYLINDER |
| | DIG2 | FLUID BEARING |
| | DIG3 | FLEXIBLE DRIVE |
| | DIG4 | LOST MOTION |
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