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| Class 91 | MOTORS: EXPANSIBLE CHAMBER TYPE |
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![[List of Pre Grant Publications for class 91 subclass 1]](../as.gif) | ![[List of Patents for class 91 subclass 1]](../ps.gif) | 1 | WITH SIGNAL, INDICATOR OR INSPECTION MEANS |
| | 2 | CUTOFF OR CONTROL AFTER PREDETERMINED NUMBER OF CYCLES OR REVOLUTIONS |
| | 3 | JET CONTROL TYPE |
| | 4R | HYDRO-PNEUMATIC |
| | 5 | WORKING MEMBER MOVED BY STORED MOTIVE FLUID CHARGE |
| | 6 | FLUID SUPPLY THROUGH DIVERSE PATHS TO SINGLE EXPANSIBLE CHAMBER |
| | 6.5 |  Three or more cylinders arranged in parallel, radial or conical relationship with rotary transmission axis |
| | 7 | Selective cyclic and noncyclic operation or parking |
| | 8 | Semi-compound type |
| | 11 | Changeable from multiple expansion to simple operation |
| | 12 | Cyclically operable motor with port reversing |
| | 13 |  By shifting distributor seat |
| | 14 | By shifting distributor |
| | 15 | Selector valve between distributor and motor |
| | 16 | Drifting or coasting on lower pressure |
| | 19 | Diverse paths used to control extent of working member travel |
| | 20 | Position responsive |
| | 21 | Rotating working member or chamber |
| | 22 | Preliminary inlet to contracting chamber (e.g., cushioning, etc.) |
| | 24 | Additional inlet path opened in response to position |
| | 27 | Plural simultaneous paths, one cutoff in response to position |
| | 28 | Second path activated in response to pressure or flow in first path |
| | 30 | Serially arranged reversing valves |
| | 31 | One path includes restriction |
| | 32 | Activation of one path disables second path |
| | 34 | SINGLE ACTING, CHANGEABLE TO OR FROM DOUBLE ACTING |
| | 35 | INDEPENDENTLY OPERATED TIMER, DELAY, PATTERN OR CYCLIC CONTROL |
| | 36 | Of independently movable working members |
| | 37 | Pattern or template control |
| | 38 | Fluid actuated valve with volume chamber delay means |
| | 39 | Independent distributor actuation for cyclic control |
| | 41 | WITH CORRELATED CONTROL OF MOTIVE FLUID AND LOCKING MEANS |
| | 42 | By electrical control means |
| | 43 | Working member position control of motive fluid and locking means |
| | 44 | Sequential operation of locking means and motive fluid control |
| | 45 | Common or interconnected valve means control motive fluid and fluid for locking means |
| | 46 | WITH INTERRELATED CONTROL OF MOTIVE FLUID AND LUBRICANT |
| | 47 | CONSTANTLY APPLIED MOTIVE FLUID WITH CONTROLLED VENTING |
| | 48 | Plural separately controlled vents |
| | 49 | Fluid vented through working member |
| | 50 | Cyclically operable |
| | 51 | Motive fluid constantly applied to and vented from opposed chambers |
| | 52 | CONSTANTLY OPEN THROTTLED EXHAUST WITH CONTROLLED MOTIVE FLUID SUPPLY |
| | 53 | ENGINE ROTATING OR STARTING TYPE |
| | 54 | CONVERTIBLE; OR CHANGEABLE BY DISASSEMBLY OR ASSEMBLY |
| | 55 | COMBINED |
| | 59 | TORQUE RESPONSIVE MOTIVE FLUID CONTROL |
| | 61 | ROTARY AND RECIPROCATING WORKING MEMBERS |
| | 151 | SERIALLY FORMED EXPANDING WORKING CHAMBERS (E.G., ENDLESS, ETC.) |
| | 152 | MULTIPLE EXPANSION |
| | 153 | Duplex |
| | 155 | With fluid actuated distributor |
| | 156 | Concentric working chambers |
| | 157 | Relative valving adjustment between high and low pressure working chambers |
| | 159 | Expansion between relatively movable working members |
| | 160 | Double acting high and low pressure working members |
| | 161 | Fluid acts on each working member in single direction |
| | 163 | Fluid expanded through working member |
| | 164 | Dual, rigidly connected high and low pressure faces |
| | 165 | APPLICATION OF MOTIVE FLUID AT DIFFERENT PRESSURES TO OPPOSED WORKING MEMBER FACES |
| | 167R | EXTENSION OF UNIT HAVING SEPARATELY CONTROLLED WORKING CHAMBERS EQUALS SUM OF INDIVIDUAL CHAMBER EXTENSIONS |
| | 472 | THREE OR MORE CYLINDERS ARRANGED IN PARALLEL RADIAL OR CONICAL RELATIONSHIP WITH ROTARY TRANSMISSION AXIS |
| | 473 | Condition responsive control of drive transmission |
| | 474 | Separate fluid supply or discharge paths |
| | 475 | Having yieldable drive transmission |
| | 476 | Separate motive fluid control for each working chamber |
| | 477 | Each piston acts as valve for different working chamber |
| | 478 | Means varies cyclic relation between reciprocating member and control valve therefor |
| | 479 | Control by moving cylinder or liner |
| | 480 | Mechanically actuated valves |
| | 482 | Means varies cyclic relation between reciprocating member and control valve therefor |
| | 484 | Control valve seating surface contact maintained by fluid pressure bias |
| | 486 | Motive fluid bypass to or from assembly |
| | 487 | Separate passage directs motive fluid to or from valve interface |
| | 488 | Fluid conducting passage disposed within piston |
| | 489 | Valved |
| | 490 | Motive fluid supply or discharge through piston |
| | 491 | Radially disposed cylinders |
| | 492 | Plural banks |
| | 493 | Rigidly connected pistons reciprocate within rigidly connected cylinders |
| | 494 | Cylinders and pistons form or coact with respective common elements having limited relative rotary movement |
| | 496 | Positive bidirectional drive or reciprocating members |
| | 497 | Stroke control |
| | 498 | Cooperating valve ports in cylinder and relatively movable central member |
| | 499 | Cylinders parallel to rotation axis |
| | 169 | SINGLE CHAMBER FORMED BY MUTUALLY RELATIVELY MOVABLE CYLINDER, SLEEVE AND PISTON |
| | 170R | RELATIVELY MOVABLE WORKING MEMBERS WITH ONE HAVING MOTIVE FLUID CONTROLLED BY, MOVABLY INTERCONNECTED WITH OR MOVED BY ANOTHER |
| | 171 | Synchronizing in response to sensed difference in positions |
| | 172 | One working member oppositely biased by another |
| | 173 | One working member forms movable chamber for another |
| | 174 | With connection to relatively movable output member disposed between spaced unitary end faces |
| | 176 | Moving cylinders |
| | 177 | Oscillating working members |
| | 178 | Single valve unit controlling plural working chambers |
| | 181 | Interconnected working members in communicating chamber portions |
| | 182 | Means connecting working members actuates common part controlling motive fluid for the members |
| | 183 | With means interconnecting working members to cause relative motion |
| | 184 | Working member covers port to control motive fluid |
| | 185 | Motive fluid control by pitman swing or intermittent contact with working member |
| | 186 | Connection includes toothed gearing or rocking lever |
| | 187 | Means varies cyclic relation between working member and control valve therefor |
| | 188 | Motive fluid control actuator includes cam or crank rigid with means connecting working members |
| | 189R | Position of one working member controls motive fluid for another |
| | 190 | Changeable to plural self-controlled working members |
| | 191 | Each cyclically controls another (e.g., duplex, etc.) |
| | 192 |  With three or more working members |
| | 193 | Fluid operated valve controlled by relatively movable working member |
| | 194 | Rotating output shaft type (e.g., locomotive or reversing means, etc.) |
| | 195 | With self-control |
| | 189A | Piston or rod directly valves passage |
| | 170MP | Mine props |
| | 196 | MOVING CYLINDER |
| | 197 | Plural rigidly connected rotary cylinders |
| | 206 | With integral exterior working face |
| | 210 | Oscillating cylinder |
| | 211 | Cooperating valve ports in cylinder and fixed member |
| | 215 | Cylinder carried valve operated by fixed actuator |
| | 216R | Cylinder and piston have relative reciprocation on fixed axis |
| | 218 | CYCLICALLY OPERABLE |
| | 219 | With dwell |
| | 220 | With condition responsive stop means |
| | 222 | Distributor in piston (422) |
| | 223 | Oscillating piston (e.g., vane, etc.) |
| | 224 | Distributor establishes communication between opposite faces of piston |
| | 225 | Piston traverses pilot port to control distributor motor motive fluid |
| | 226 | Communication into piston through peripheral port |
| | 228 | Piston carries separate inlet and exhaust valves |
| | 229 | Distributor operated by abutment with cylinder head |
| | 230 | Codirectional separately supplied working members |
| | 232 | Valveless distribution |
| | 233 | Distribution by reciprocating working member moving about an axis |
| | 234 | Working member formed to provide internal fluid flow passage |
| | 235 | Working chamber receives controlled motive fluid supply from opposed chamber having constant supply (321) (417) |
| | 236 | Multiple exhaust passages (e.g., compression control, etc.) |
| | 237 | Exhaust valve has separate valve controlled second exhaust passage therein |
| | 239 | Distributor for inlet or first exhaust controls second exhaust passage |
| | 240 | Fluid pressure actuated valve for second exhaust passage |
| | 243 | Working member controlled exhaust port with valved second exhaust passage |
| | 244 | Controlled by separate relatively movable valves |
| | 245 | Clearance control |
| | 246 | Correlated throttle valve and distributor |
| | 247 | Timing control by relative adjustment of plural movable fluid control elements |
| | 248 | Electrical adjustment |
| | 249 | With relative adjustment of plural adjustable fluid control elements |
| | 252 | Cut off adjustable relative to admission |
| | 253 | Inlet controlled by relatively cyclically moved elements |
| | 254 |  Biased cut off with adjustable trip |
| | 255 | Adjustable fluid control for fluid actuated cut off |
| | 256 | Cut off adjustable relative to reciprocating admission element |
| | 260 | Biased inlet valve with adjustable tripping means |
| | 262 | Adjustable cam or cam follower actuated inlet valve |
| | 263 | Adjustable fluid control for fluid actuated inlet valve |
| | 264 | Relatively movable serial distributors |
| | 265 | Relatively movable inlet and exhaust valves |
| | 266 | Oscillating working member |
| | 267 | Lost motion drive from inlet to exhaust valve |
| | 268 | Exhaust valve closed or held closed by inlet fluid (442) |
| | 269 | Biased valve with trip |
| | 270 | Inlet and exhaust valve movable about an axis |
| | 271 | Reciprocating inlet and exhaust valves |
| | 274 | With independent throttle adjustment for one side of double-acting motor |
| | 275 | Electrically or magnetically actuated or adjusted distributor (459) |
| | 276 | Distributor forms traversed movable portion of working chamber wall (423) |
| | 277 | Adjustable working member reversal position (e.g., stroke control, etc.) |
| | 278 | Selective diverse supply or exhaust paths for distributor motor |
| | 279 | Adjustable lost motion connection |
| | 280 | Pulsator-actuated distributor (460) |
| | 281 | Working member controlled motive fluid for distributor motor |
| | 282 | Fluid supply through diverse paths to distributor motor chamber |
| | 284 | Independent means to adjust distributor motor supply or exhaust passage |
| | 286 | Distributor or distributor motor mechanically moved cyclically to control actuating fluid for distributor motor |
| | 287 | Movement of relatively movable pilot mechanically moves distributor |
| | 288 | Distributor motor mechanically moved about axis |
| | 289 | Adjustable means to retard or lock distributor motor |
| | 290 | Working member traverses pilot port in working chamber side wall |
| | 291 | Port controls separate motor for intermediate pilot valve |
| | 293 | With passage from port controlled by pilot valve |
| | 295 | Plural ports control relatively movable distributor motors |
| | 296 | Constantly open exhaust from distributor working chamber |
| | 297 | With passage for pilot fluid in working member |
| | 299 | With distributor reversal by fluid compressed by working member |
| | 300 | With distributor reversal by constantly supplied motive fluid |
| | 301 | With control of distributor motor supply or exhaust port by distributor working member |
| | 302 | Pilot port relieved into working chamber having working member controlled exhaust port |
| | 303 | Working member adapted to directly mechanically reverse distributor |
| | 304 | Pilot valve controlled distributor motor (461) |
| | 305 | Plural pilot valves |
| | 307 | Pilot valve relieves constantly supplied distributor motor fluid |
| | 308 | Fluid-operated pilot valve |
| | 309 | With distributor motor reversal by constantly applied fluid pressure |
| | 310 | Pilot valve moves about an axis |
| | 311 | Pilot valve moves laterally relative to working member reciprocatory path |
| | 312 | Distributor motor working member is valve seat for pilot valve |
| | 313 | Pilot valve actuator extends into working chamber |
| | 314 | Working member reverses pilot through part movable relative to both |
| | 315 | Distributor moves about an axis |
| | 316 | Distributor moves laterally relative to working member reciprocatory path |
| | 317 | Working member compresses fluid to reverse distributor |
| | 318 | Motive fluid build-up at end of working stroke reverses distributor |
| | 319 | Working member traverses pilot passage to control distributor motor |
| | 321 | Motive fluid constantly applied to one working member face (235) (417) |
| | 322 | With independently operable means to lock distributor |
| | 323 | Relatively movable distributors for opposed working chambers |
| | 325 | Working member controlled inlet or exhaust port (e.g., semi-valveless, etc.) |
| | 326 | Distributor moves transverse and parallel to same line |
| | 327 | Distributor moves about axis parallel to working member reciprocatory path |
| | 328 | Distributor peripherally engages (1) working chamber wall, or (2) cylinder between opposed working faces |
| | 329 | Distributor located in cylinder between spaced working faces |
| | 330 | With independently operable means to move or means to adjust movement of distributor |
| | 335 | With throttle valve or distributor throttle adjustment |
| | 337 | With means independent of distributor reversing parts to cyclically hold distributor |
| | 339 | Oscillating working member |
| | 341R | Distributor actuator extends into working chamber |
| | 342 | Axially slidable through working face |
| | 343 | Moves laterally relative to working member reciprocatory path |
| | 341A | Valves in partition between tandem pistons |
| | 344 | Biasing means moves distributor after predetermined travel (i.e., snap action) |
| | 348 | Distributor actuator between space piston faces |
| | 350 | Working member reverses distributor through part movable relative to both |
| | 355 | CUTOFF AFTER SINGLE COMPLETE CYCLE |
| | 357 | SELECTIVELY USABLE OR POSITIONABLE WORKING MEMBER CONTROLLED VENT IN CHAMBER WALL (402) |
| | 358R | WORKING MEMBER POSITION FEEDBACK TO MOTIVE FLUID CONTROL |
| | 359 | Regenerative or positive feedback type |
| | 360 | With safety means operable upon input signal loss |
| | 361 | Electrical input and feedback signal means (459) |
| | 364 | With means to vary feedback signal in response to rate of working member movement |
| | 365 | With main valve position feedback to pilot valve |
| | 366 | Speed governor controlled input signal (458) |
| | 367 | Plural input signal means for single motor valve (453) |
| | 368 | Follower type |
| | 369.1 | With relatively movable working and output members reacting on input member |
| | 370 | With motor chamber pressure reaction on valve |
| | 374 | Plural movable valve parts |
| | 379 | Disproportional rate of response |
| | 380 | Screw and follower (e.g., nut, etc.) |
| | 381 | Differential gearing |
| | 382 | Cam and follower |
| | 383 | Cable |
| | 384 | Floating link |
| | 385 | Bias-type input and feedback signal means |
| | 388 | Fluid operated |
| | 389 | Adjustable |
| | 358A | Valve locking means |
| | 390 | POSITION MAINTAINING TYPE |
| | 391R | WITH ALTERNATIVE MANUAL ACTUATION OF LOAD |
| | 392 | WORKING MEMBER POSITION RESPONSIVE MOTIVE FLUID CONTROL |
| | 393 | Position initiated timing or delay means |
| | 394 | Working member carries part within working chamber which controls port in chamber end wall |
| | 397 | Alternate control of inlet and exhaust for same chamber at opposite ends of stroke |
| | 398 | Simultaneous control of inlet and exhaust of same chamber |
| | 399 | Bypassing between expanding chamber and closed or throttled contracting chamber (e.g., cushioning, etc.) (23) |
| | 400 | Venting expanding chamber |
| | 403 | Position controls actuating fluid for valve |
| | 404 | Exhaust control |
| | 405 | Throttling (e.g., cushioning, etc.) |
| | 406 | Exhaust valve with bleed passage therein |
| | 407 | By successively controlling or controlling less than all of plural exhaust passages |
| | 409 | Working member covers exhaust port in contracting chamber (408) |
| | 410 | Working member controls relatively movable inlet valve |
| | 508 | PLURAL RELATIVELY MOVABLE OR RIGIDLY INTERCONNECTED WORKING MEMBERS |
| | 509 | Having (1) stand-by or (2) redundant means enabling load to be driven upon failure of primary load moving means |
| | 510 | Stand-by means utilizes an auxiliary motive fluid source for another working member to drive same load |
| | 511 | Condition responsive means for modifying working member operation |
| | 512 | Condition is that of a load driven by a working member other than working member having its operation modified |
| | 513 | Condition is position of fluid control member of motor other than motor whose operation is modified |
| | 514 | Pressure responsive valve divides motive fluid between motors |
| | 517 | Condition sensed is working member speed or working fluid pressure of another motor (i.e., fluid pressure or flow to or from expansible chamber of the other motor) |
| | 518 | Motive fluid control valve responsive to pressure in supply line to or exhaust line from motor which it modifies |
| | 519 | With means for selectively changing the speed or force exerted on load by the selective application of motive fluid in a single direction to one or more working members |
| | 520 | Motors connected in series |
| | 521 | Separate valve means actuatable by a common nonmanual actuator or separately actuatable means with common manual actuator |
| | 522 | With means to independently actuate valve means |
| | 523 | Simultaneously actuated separate valve means |
| | 524 | Successive actuation of separate valve means |
| | 525 | With means to control the working fluid to one working member for movement relative to another without controlling the working fluid to the other working member by said means |
| | 526 | With multiway valve in series with control means |
| | 527 | Valve controlled by remote means (e.g., radio, electromagnetic, etc.) |
| | 528 | Control means is fluid pressure operated valve |
| | 530 | Control means includes separate control valves for each working member |
| | 532 | With means for proportioning motive fluid supply to plural motors |
| | 533 | Single valve for plural rigidly connected working members |
| | 534 | Single valve for relatively movable working members driving common load |
| | 535 | Relatively movable working members of unequal cross-sectional areas |
| | 536 | Single valve for relatively movable working members |
| | 415 | DIFFERENTIAL |
| | 416 | Opposing pressure applied by bypassing |
| | 417R | Motive fluid constantly applied to one working member face (235) (321) |
| | 418 | WITH MOTIVE FLUID VALVE |
| | 419 | Responsive to (1) motive fluid temperature or state, or (2) motor position or orientation |
| | 420 | Contracting chamber exhaust valve controlled by expanding chamber pressure or flow |
| | 421 | Expanding chamber inlet controlled by contracting chamber pressure or flow |
| | 422 | Valved piston (222) |
| | 423 | Valve part forms traversed movable portion of working chamber wall (276) |
| | 424 | Two hand control |
| | 426 | With fluid pressure holding means for valve |
| | 427 | Plural manual control stations |
| | 428 | Manual control carried on or operated from load or output element |
| | 429 | Dither valve |
| | 430 | Valve parts continuously relatively moved for nonvalving function |
| | 431 | Continuous motive fluid flow through chamber in motor idle condition |
| | 432 | Inlet check valve with means for disconnectable supply line (468) |
| | 433 | Both inlet and exhaust controlled by motive fluid pressure in supply line or chamber |
| | 435 | Controlled by rate of movement of working member |
| | 436 | Inlet fluid supplemented by controlled fluid pressurized in opposed contracting chamber |
| | 437 | Independent control of bypass between opposed working chambers |
| | 440 | For exhausting contracting working chamber to expanding opposed nonworking |
| | 441 | With ambient fluid inlet valve to expanding working chamber |
| | 442 | Self-opening exhaust valve held closed by inlet pressure (268) |
| | 443 | To provide unequal inlet and exhaust flow rates to single working chamber |
| | 444 | Relatively movable serial valves |
| | 445 | Stop valve between working chamber and inlet and exhaust valve |
| | 446 | Including motive fluid pressure or flow responsive valve (468) |
| | 448 | In supply path |
| | 449 | Plural separately controlled waste passages for single working chamber |
| | 450 | One passage controlled by inlet and exhaust valve |
| | 452 | One passage controlled by motive fluid pressure or flow-responsive valve (468) |
| | 453 | Plural actuators for single valve means (367) |
| | 454 | Relatively movable inlet and exhaust valves for single working chamber |
| | 455 | One valve forms unitary part of valve controlling opposed working chamber |
| | 456 | One valve moves about an axis |
| | 457 | Single actuating means moves both valves |
| | 458 | Speed governor operated (366) |
| | 459 | Electrically operated (275) (361) |
| | 460 | Pulsator actuator for valve (280) |
| | 461 | Pilot valve (304) |
| | 462 | For double-acting motor |
| | 463 | With means to provide unequal flow rates to or from opposed working chambers |
| | 464 | Means to simultaneously open working chambers to inlet or exhaust |
| | 465 | Relatively movable unitary inlet and exhaust valves for opposed working chambers |
| | 466 | Unitary inlet and exhaust valve means for opposed working chambers |
| | 468 | Self-acting valve (432) (446) (451) (452) |
| | 469 | Unitary inlet and exhaust valve for single working chamber |
| | 471 | MISCELLANEOUS (E.G., METHODS, ETC.) |
| FOREIGN ART COLLECTIONS | ||
| FOR000 | CLASS-RELATED FOREIGN DOCUMENTS |
| DIGESTS | ||
| | DIG1 | DIGITAL |
| | DIG2 | EXHAUST THROTTLED MOTOR CONTROL |
| | DIG3 | LARGE AREA VALVE |
| | DIG4 | MAGNETS |
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