What follows are the subclasses from one class of the Manual of Classification for US patents. As you scroll through the list and encounter a class/subclass of interest, you can jump back to the top and retrieve patent titles by entering the class/subclass in the box below.
Enter a class/subclass code here to get a list of patent titles. Use
any of the following forms:
363-131 121-55A 14-.5
that is, no embedded spaces, class and subclass seperated by a dash, and any
subclass letters capitalized. Currently Design Patent titles (those in the
classes of the form Dxx.yy) are not retreivable.
Class Number: 92 Class Title: EXPANSIBLE CHAMBER DEVICES Subclass Subclass Number Title 1 WITH TEMPERATURE COMPENSATION 2 ONE WORKING MEMBER RECIPROCATES AND ANOTHER ROTATES COMMON OUTPUT MEMBER 3 WITH DISENGAGEABLE ROTARY DRIVE FOR MOVING WORKING MEMBER 5 R WITH (1) SIGNAL OR INDICATOR OR (2) INSPECTION WINDOW IN EXPANSIBLE CHAMBER WALL PORTION 5 L .With lock 6 R EFFECTIVE AREA OF WORKING MEMBER END FACE SELECTIVELY VARIABLE 6 D .With diaphragm 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 11 ..With auxiliary adjustable throttle (12) 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 ..WITH ADJUSTABLE MEANS TO VARY STROKE OF WORKING MEMBER 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 13.41 ..Adjustment by assembly or disassembly 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 19 ..Self-engaging 20 .Engages power element movable relative to working member 21 R .Plural selectively operable actuators for releasable means 21 MR ..Manual releasee 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 25 ...With pivoted link between element and member 26 ...Resilient element 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 46 ..With nonmetallic portion 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 55 .Fluid conduit coaxial with axis of rotation 56 .Plural cylinders 57 ..Axes of cylinders parallel to axis of rotation 58 ..Axes of cylinders intersect axis of rotation at common point 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 63 ..With separate biasing means for a working member 64 .One a flexible wall type 65 .Rigid stem on first working member portion extends through second working memberr 66 .Moving cylinders 67 .Oscillating working members 68 .Interconnected with common rotatable shaft 69 R ..Oppositely movable walls of common chamber (50) (75) 70 ...Shaft axis parallel to axes of working members (71) 69 A ...One piston rod passes through opposite piston rod 69 B ...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 73 ...Parallel working members 74 ....Shaft extends transversely through 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 79 .Means separates gas from liquid 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 85 R WITH CUSHIONING MEANS EFFECTIVE OVER A PORTION ONLY OF STROKE 85 A .Metal spring 85 B .Fluid spring 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 92 ...Non-metallic 93 ..Annular flexible wall portion peripherally sealed to spaced relatively fixed concentric rigid members 94 ..With separate biasing means 95 ...Adjustable 96 ..Diaphragm type 97 ...Axially spaced flexible wall portions with interposed incompressible means 98 R ...Entire periphery secured to rigid working chamber forming wall 99 ....With undistortable member secured to central portion of diaphragm 100 .....Member includes coextensive plate-like elements secured to opposite side of diaphragm 101 ....Abutment connection between diaphragm and power transmission element 102 ....With separate seal means between diaphragm and member 98 D ....Rolling diaphragm 103 R ...Specific or diverse material (47) 103 F ....With reinforcement embedded in diaphragmm 103 SD ....Synthetic diaphragm (non-metal and non-rubber) 103 M ....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 108 .Axially extending hollow stem on working member 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 114 ..Part and stem relatively axially adjustable 115 ...Part forms actuator for piston side wall portion adjusting means 116 WITH AXIALLY EXTENDING ELEMENT MOUNTED ON WORKING MEMBER FOR RELATIVE ROTARY MOVEMENT ONLY 117 R MOVING CYLINDER 118 .Pivoted 119 ..With fluid conduit extending through pivoted connection 117 A .Stationary piston or movable piston with moving cylinder 120 OSCILLATING WORKING MEMBER OR CYLINDER THEREFOR 121 .Oscillatory shaft with radially extending vane 122 ..Plural angularly related vanes 123 ..With lost motion connection between vane and shaft 124 ..With resiliently biased vane peripheral portion 125 ..Vane includes non-metallic peripheral sealing portion 126 WITH DIFFERENTIAL RADIAL THRUST PRODUCING MEANS FOR WORKING MEMBER 127 .Fluid pressure type 128 WITH ASSEMBLY OR DISASSEMBLY FACILITATING MEANS 129 ABUTMENT CONNECTION BETWEEN WORKING MEMBER AND POWER TRANSMISSION ELEMENT 130 R 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 130 A .Bias normally held inoperative by fluid pressure 130 B .Bias other than coil spring 130 C .Bias external of both expanding and contracting chamber 130 D .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 FLUIDD 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) 147 .With casing or support for rotary shaft 148 ..Three or more radially arranged cylinders 149 ..V-type 150 ..Coaxial cylinder (151) 151 .Coaxial cylinders (150) 152 ..With different cross-sectional areas 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 159 ..Pocket or chamber 160 ..Port or passage extending through side wall portion 161 WITH SUPPORT OR FRAME (146) 161.5 .Wheel supported 162 R SPACED CYLINDER AND PISTON WALLS DEFINE PASSAGE BETWEEN OPPOSED PISTON SIDE WALL ENDS 162 P .Passage in piston 163 FLUID CONDUIT OR PORT IN FIXED WALL OF WORKING CHAMBER 164 .Port in separable chamber end closure 165 R 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 165 PR .Prevent rotation 169.1 CYLINDER DETAIL 169.2 .With reinforcing member 169.3 ..Extending through working member 169.4 ...Coaxial sleeve or tube 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 181 R .With fluid passage in piston face 182 ..Passage communicates with packing receiving recess 183 ...Valved 184 ...Passage in opposed piston faces 185 ....Passages communicate with common packing receiving recess 181 P ..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 too piston 188 ..Means retained by annulus positioned about piston periphery 189 ..Piston formed of separable end face and side wall portion 190 ...Means secures end face portion to 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 203 ...Adjustment effected by wedge member movable relative to skirt (207) 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 206 ...With beveled abutting surfaces between side wall portion and an end member 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 218 ....With means to prevent relative rotation of parts 219 ...Interconnected without separate fastening means 220 ...Threaded fastener 221 ....Fastener extends through end face 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 229 .....Annular element 230 ......Element encircles connecting rod pin supporting boss 231 ...Welded, brazed or soldered (260) 232 ..Spaced skirt parts jointed by resilient arcuate web 233 ..Oval-shaped skirt portionn 234 ..Skirt includes slit 235 ...Slit transverse to skirt axis 236 ....With additional angularly related 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 243 ...Oppositely facing 244 ....Lips formed on separable elements 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 250 ...Flexible side wall portion between separable axially spaced rigid members 251 ....Wall portion comprises plural axially aligned flexible elements 252 .....Three or more elements 253 ...Axially spaced flexible side wall forming elements with interposed rigid spacer member 254 ...With imbedded reinforcing means (241) 255 .Plural separable parts 256 ..Fastening means for parts include resilient element 257 ..Side wall portion interposed between separable axially spaced rigid members 258 ...Rigid members connected by coaxial rigid stem or rod 259 ..Side wall portion and relatively movable piston part having abutting inclined surfaces 260 .Welded, brazed or soldered (231) 261 MISCELLANEOUS (E.G., CRANKCASE) * ****************************** * DIGESTS * ****************************** DIG 1 Bearing on piston or cylinder DIG 2 Fluid bearing DIG 3 Flexible drive DIG 4 Lost motion