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: 254 Class Title: IMPLEMENTS OR APPARATUS FOR APPLYING PUSHING OR PULLING FORCE Subclass Subclass Number Title 1 MISCELLANEOUS 2 R HOISTING TRUCK 3 R .Tilting load support 3 B ..Service station type 3 C ..Platform type 4 R .Cable hoist 4 B ..Service station type 4 C ..Platform type 5 R .Inclined plane or wedge 5 B ..Service station type 5 C ..Platform type 6 R .Rack and pinion or segment 6 B ..Service station type 6 C ..Platform type 7 R .Screw 7 B ..Service station type 7 C ..Platform type 8 R .Single throw lever 9 R ..Toggle 9 B ...Service station type 9 C ...Platform type 10 R ..Parallelogram bars 10 B ...Service station type 10 C ...Platform type 8 B ..Service station type 8 C ..Platform type 2 B .Service station type 2 C .Platform type 10.5 METALLIC SPRING STRETCHER AND/OR COMPRESSOR (E.G., LEAF, HELICAL, OR COIL SPRINGS) 11 FLOOR JACK TYPE 12 .Rack and pinion or segment 13 .Screw 14 .Step-by-step traveling member 15 .Single-throw lever and bar 16 ..Sliding bar 17 .Single throw lever 18 NAIL EXTRACTOR TYPE 19 .Hammer and anvil 20 .Screw 21 .Single throw lever 22 ..Lever and pivoted jaw grip 23 ..Multiple jaw grip 24 ...Cam or wedge actuated 25 ..Claw bar 26 R ...Hammer 26 E ....Extensible fulcrum 27 ...Pivoted fulcrum member 28 STAPLE PULLER 28.5 THILL-COUPLING JACK 29 R PIPE OR ROD JACKK 30 .Lifter 31 ..Reciprocating clutch 29 A .Tie rod tensioner 32 AXLE-LUBRICATING JACK 33 CAR JOURNAL BOX LIFTING 34 .Suspended lifter 35 CAR-PUSHER TYPE 36 .Pinch bar 37 ..Rail clamping 38 ..Pivoted wheel engaging member 39 DOOR BRACE 40 PRINTER'S QUOINS 41 .Screw 42 .Wedge 43 RAIL OR TIE SHAFTER 44 .Single throw lever 45 VEHICLE-BODY LIFTERS 46 .Lever and drum 47 .Cable hoist 48 ..Vehicle attached drum 49 .Swinging side bars 50 ..Single fixed pivot 50.1 RESILIENT TIRE-CASING SPREADERS 50.2 .Spreader and tire casing relatively movable or rotatably mounted 50.3 .Fluid pressure operated 50.4 .With tire casing support 134.3 R METHOD OR APPARATUS FOR PLACEMENT OF CONDUCTIVE WIRE 134.4 .By fluid pressure differential in conduit (e.g., parachute sucked through conduit) 134.5 .Tractor for pulling wire (e.g., battery-powered) 134.6 ..Step-by-step type (e.g., by camming against messenger) 134.7 .Sectional members for fishing 134.3 PA.Utility pole guide 134.3 CL.Cable lashing 134.3 FT.Conduit snakes 134.3 SC.Submarine cable 199 PORTABLE IMPLEMENTS OR APPARATUS FOR TENSIONING FLEXIBLE MATERIAL OR FOR EXTRACTING STUMPS OR POLES 200 .Material comprises resilient floor covering (e.g., carpet) 201 ..Including fluid or spring driven cylinder 202 ..Including force transmitting cable and driven, rotatable, cable engaging drum 203 ..Including driven, rotatable, floor covering engaging and pulling drum 204 ..Including screw drive 205 ..Including rack and pinion, or pinion segment, drive 206 ..Including ratchet bar and driving pawl drive 207 ...Having plural, disparate, driving pawls 208 ..Including rotatable, pulley wheel element and cable 209 ..Including force transmitting, hand held and operated, lever 210 ...With means attached thereto for sequentially, gripping, shifting, and releasing bar component 211 ...With floor covering clamping means attached to lever 212 ...Having linearly shifting, guided component attached thereto 213 .Including rotatably driven drum for engaging either material or force transmitting cable 214 ..Plural drums or drum with plural distinct sectionss 215 ...Juxtaposed to material or cable at single locus 216 ..Having pressure element spaced therefrom to confine material or cable thereagainst 217 ..Having ratchet wheel and interengaging pawl for driving drum 218 ...Pawl pivots about fixed point on drive handle 219 ..Having intermeshing gears for driving drum 220 ...Worm and worm wheel 221 ..With projections or apertures on drum for engagement with complementary formations on material or cable 222 ..With means for preventing or retarding rotation in at least one direction 223 ...Ratchet wheel or formation and pawl 224 ..With adjustable gripping device for attaching drum to rigid, in situ structure 225 ..With material or cable contacting infeed guide 226 ...Rotatable pulley wheel element 227 ..With ground-engaging support means 228 .Including expansible chamber fluid motor drive 229 .Including worm and worm wheel gear drive 230 .Includng rack and pinion, or pinion segment, drive 231 .Including screw drive 232 ..Plural screws 233 ...Having plural, oppositely shifting, threaded riders 234 ..Having plural, oppositely shifting, threaded riders 235 ..Having ratchet wheel and pawl for driving screw 236 ..Having intermeshing gears for driving screw 237 .Including ratchet bar and driving pawl drive 238 ..Having plural, disparate, driving pawls 239 ...Plural ratchet formations 240 ....Facing opposite directions 241 .Including intermeshing gear drive 242 .Including rotatable, pulley wheel element and cable 243 .Including either force transmitting, hand held and operated lever or animal powered sweep 244 ..Implement or apparatus includes bar component having plural holes and removable cooperating pins selectively engagable by lever 245 ..With means attached thereto for sequentially gripping, shifting, and releasing bar component 246 ..Having linearly shifting, guided component attached thereto 247 ...With ratchet formation and locking pawl for maintaining relative positioning 248 ..With additional, hand held lever pivotally attached thereto for applying pulling force in opposite direction 249 ...Having position locking means between levers 250 ..With camming means thereon, and pressure element spaced therefrom to confine material, or force transmitting cable, thereagainst 251 ..With material, article, or force transmitting cable clamping means attached to and shifting with lever 252 ...Including cooperating, relatively stationary means for intermittently locking material or cable 253 ...Plural clamping means 254 ....Alternately clamping and pulling on material or cable 255 ....Attached by flexible connector 256 ..With material, article, or force transmitting cable engaging means movably attached to and shifting with lever 257 ...Including cooperating, relatively stationary means forr intermittently locking material or cable 258 ...Plural, movably attached engaging means 259 ....Alternately engaging and pulling on material or cable 260 ....Attached by flexible connector 261 ..With means pivotally connected to lever and adapted to engage rigid, in situ structure 262 .Including adjustable gripping device for attaching implement or apparatus to rigid, in situ structure 263 .Including ground engaging means for supporting implement or apparatus in plural, vertically spaced positions 84 TRAVERSING JACK 85 .Screw 418 VEHICLE ATTACHED JACK 419 .Semi-trailer landing gear 420 .Attached to trailer tongue 421 .Turntable 422 .Rocking lever 423 .Hydraulic or pneumatic 424 .Screw actuated 425 ..Gear driven 426 .Cable actuated 427 .Rack and pinion 264 APPARATUS FOR HAULING OR HOISTING LOAD, INCLUDING DRIVEN DEVICE WHICH CONTACTS AND PULLS ON CABLE 265 .Device includes driven, flexible, cable contacting belt 266 .Device includes rotatably driven, cable contacting drum 267 ..Having rotational speed governor for generating control impulse to rotation retarding means or drive 268 ..Having mechanism, actuated by changes in position of drum relative to another component of device, for generating control impulse to rotation retarding means or drive 269 ..Having stationary mechanism, actuated by load or other obstruction on and traveling with cable, for generating control impulse to rotation retarding means or drive 270 ..Having cable contacted, supported, or attached mechanism for generating control impulse to retarding means or drive 271 ...With cable contacting component, on or adjacent to circumference of drum, shifted by segment of wound cable 272 ...With cable deflecting or path defining component shifted by cable when tension varies 273 ....Electricity or fluid utilized in transmittal of impulse 274 ..Having mechanism, linked to drum or rotating element of drive, for generating control impulse to rotation retarding means or motor when torque on drum varies 275 ...Electricity utilized in transmittal or impulse 276 ..Having mechanism, linked to drum and actuated by number of drum rotations, for generating control impulse to rotation retarding means or drive 277 ..With fluid or resilient shock absorbing or tension maintaining means attached to, supported by, or supporting guiding structure for cable 278 ..Plural drums or drum with plural distinct sections 279 ...With vehicle for supporting at least one drum 280 ....Having rotatable, cable guiding, pulley wheel element spaced from drums 281 .....Element repositionable relative to at least one of the drums 282 ....Drive for at least one drum includes motor of vehiclee 283 ...Having rotatable, cable guiding, pulley wheel element spaced from drums 284 ....Element repositionable relative to at least one of the drums 285 .....Plural elements 286 ....Plural elements 287 ...Juxtaposed to cable at single locus 288 ...With means affixing at least one drum to supporting base and allowing movement between drum and base 289 ....Movement engages or disengages drum from drive 290 ...Plural, distinct, drive motors 291 ....Noncompressible fluid 292 ....Electric 293 ...Each drum having plural, distinct drive sources or discrete drive trains 294 ...Having common drive source or mechanically interlinked drive trains 295 ....Including intermeshing gears in drive 296 .....Worm and worm wheel 297 .....Epicyclic gear train having sun, intermediate (e.g., planet), and ring gears 298 .....Shiftable into and out of intermeshing engagement 299 .....Also including clutch mechanism having coaxial, rotatable, relatively shiftable axially, power transmitting components 300 ......With frictional brake assembly mechanically linked to, and operationally influenced by, clutch 301 ......With additional axially shiftable clutch mechanism mechanically linked to, and operationally influenced by, first clutch 302 .......Alternately transmitting power 303 ......Fluid operated actuator shifts component 304 ......Components having frictional contact surface 305 .......Truncated cone shaped 306 .....Also including ratchet wheel and driving pawl 307 ......Plural driving pawls 308 .......Attached to rotatable disk or shaft 309 .....Also including clutch mechanism having rotatable, radially shiftable, power transmitting component 310 .....With means for preventing or retarding rotation of one or more drums in at least one direction 311 ....Including sprocket wheel and chain in drive 312 ....Including power transmitting pulley and rope or belt either in drive or in cable return means 313 ....Including contacting friction wheels having noncollinear axes of rotation in drive 314 ....Including expansible, noncombustible, fluid motor in drive (e.g., air, steam) 315 ....Including noncompressible fluid motor or pump in drive 316 ....Including electric motor in drive 317 ....Including clutch mechanism in drive having coaxial, rotatable, relatively shiftable axially, power transmitting components 318 .....With frictional brake assembly mechanically linked to, and operationally influenced by, clutch 319 .....Components having frictional contact surface 320 ....Including ratchet wheel and interengaging driving pawl in drivee 321 ....Including means for preventing or retarding rotation of one or more drums in at least one direction 322 .....Frictional brake assembly having rotating, wheel structure and shiftable shoe or band 323 ..With vehicle for supporting drum 324 ...Having arch-shaped body for straddling load 325 ...Having rotatable, cable guiding, pulley wheel element spaced from drum 326 ....Element repositionable relative to drum 327 ....Plural elements 328 ...Drive for drum includes motor of vehicle 329 ..With means affixing drum to supporting base and allowing relative movement therebetween 330 ...Movement engages or disengages drum from drive 331 ...Movement occurs along line collinear with rotational axis of drum during pulling of cable 332 ...Including pivotal, rotational, or swivel connection between drum and base 333 ..Having pressure element spaced from drum to confine cable thereagainst 334 ..Having rotatable, cable guiding, pulley wheel element spaced from drum 335 ...Element repositionable relative to drum 336 ....Plural elements 337 .....Cable supported 338 ...Plural elements 339 ..Having plural, distinct drive sources or discrete drive trains 340 ...Including two or more motors 341 ..Drive includes rack and either pinion or pinion segment 342 ..Drive includes intermeshing gears 343 ...Worm and worm wheel 344 ...Epicyclic gear arrangement including sun, intermediate (e.g., planet), and ring gears 345 ...Shiftable into and out of intermeshing engagement 346 ...Drive also includes clutch mechanism having coaxial, rotatable relatively shiftable axially, power transmitting components 347 ....With frictional brake assembly mechanically linked to, and operationally influenced by, clutch 348 ....With additional axially shiftable clutch mechanism mechanically linked to, and operationally influenced by, first clutch 349 ....Fluid operated actuator shifts component 350 ....Components having frictional contact surface 351 .....Truncated cone shaped 352 ...Drive also includes ratchet wheel and driving pawl 353 ....Plural driving pawls 354 .....Attached to rotatable disk or shaft 355 ...Drive also includes clutch mechanism having rotatable, radially shiftable, power transmitting component 356 ...With means for preventing or retarding rotation of drum in at least one direction 357 ....Ratchet wheel or formation and locking pawl 358 ..Drive includes sprocket wheel and chain 359 ..Either drive or cable return means includes power transmitting pulley and rope or belt 360 ..Drive includes expansible, noncombustible, fluid motor (e.g.,, air, steam) 361 ..Drive includes noncompressible fluid motor or pump 362 ..Drive includes electric motor 363 ..Drive includes contacting friction wheels having noncollinear axes of rotation 364 ..Either drive or cable return means includes spring 365 ..Drive includes clutch mechanism having coaxial, rotatable, relatively shiftable axially, power transmitting components 366 ...With frictional brake assembly mechanically linked to, and operationally influenced by, clutch 367 ...Fluid operated actuator shifts component 368 ...Components having frictional contact surface 369 ..Drive includes ratchet wheel and interengaging driving pawl 370 ..Drive includes clutch mechanism having rotatable, radially shiftable, power transmitting component 371 ..With means on circumference of drum, or relatively movable drum components, for grasping cable 372 ..With projections or apertures on drum for engagement with complementary structural formations on cable 373 ..With pickup or pushing means on circumference of drum for cooperating with structure attached to, or formed on, end of cable 374 ..Having noncircular or varying diameter, cable contacting perimeter 375 ..Including means for preventing or retarding rotation of drum in at least one direction 376 ...Ratchet wheel or formation and locking pawl 377 ...Fluid resistance brake 378 ...Frictional brake assembly having rotating, wheel structure and shiftable shoe or band 379 ....Having fluid actuator for shifting shoe or band 380 ..With portable housing for drum and hand manipulated means for removably fastening housing to supporting base or load 381 ..With structure (e.g., sweep, tree, yoke) adapting drum to be powered by draft animal 382 ..Including static receiver spaced from drum for storing pulled cable 383 ..With cable guard structure extending partly around and closely adjacent to drum 384 .Including hand held and operated lever with plural cable engaging means movably attached thereto for alternately contacting and pulling on cable 385 .With rotatable, cable contacting, pulley wheel element attached to and reciprocated by driving component of device 386 ..Element reciprocated by expansible fluid motor 88 INCLINED PLANE LIFTER 89 R MULTIPLE LIFTERS (E.G., VEHICLE LIFTS) 90 .Track-straddling platform 91 .Swinging platform 92 .Screw 89 H .Fluid pressure 93 R FLUID PRESSURE 93 VA .Vehicle attached 93 L .Service station lifts 93 A .Combined with screw 93 HP .Inflatable portable bags 93 H .Portable automobile jacks 94 ROCKING SUPPORTSS 95 RACK AND PINION 96 .Screw pinion 97 .Geared 98 SCREW 99 .Derrick type 100 .Special engaging feature 101 ..Rocking head or base 102 .Telescoping screws 103 .Geared 104 WEDGE 105 STEP-BY-STEP TRAVELING BAR 106 .Clutch actuated 107 ..Multiple driving clutches 108 .Pawl actuated 109 ..Multiple driving pawls 110 ...Reversing 111 ..Reversing 112 .Rack and lever 113 SINGLE THROW LEVER AND BAR 114 .Sliding bar 115 ..Rack bar and segment 116 ..Adjustable 117 ...Lateral shoe 118 ...Rack bar 119 .Adjustable 120 SINGLE THROW LEVER 121 .Rail or tie lifter 122 .Lazy tongs 123 .Lever-supported thrust bar 124 .Mechanically actuated 126 ..Screw 127 ..Cable 128 ...Block and tackle 129 .Adjustable 130 ..Multiple fulcrums 131 .Special engaging feature 131.5 ..Fulcrumed fork or shovel 132 ..Root puller type 387 LOAD ENGAGING MEMBER AND POWER TRANSMITTING CABLE FOR SHIFTING MEMBER RELATIVE TO STRUCTURE WHICH CONTACTS AND GUIDES MEMBER 133 R SPECIAL ENGAGING ELEMENTS 134 .Adjustable 133 A .Sharing props (nonhydraulic) 388 MEANS SUPPORTED BY, AND MAINTAINING RELATIVE SPACING BETWEEN, LONGITUDINAL RUNS OF AN ENDLESS LOAD MOVING CABLE 389 DEVICE OR MEMBER FOR CONTACTING AND GUIDING MOVING CABLE 390 .Including rotatable, cable contacting, pulley wheel element 391 ..With mechanism for retarding or preventing cable movement or element rotation 392 ..With fluid, shock absorbing or tension restoring mechanism connected thereto 393 ..Plural elements or element with plural cable contacting regions 394 ...At least two of the elements having noncollinear axes of rotation 395 ....Juxtaposed to cable at single locus 396 .....Having juxtaposed elements repositionable relative to one anotherr 397 .....Including additional element spaced along cable path 398 ....Having one element repositionable relative to another element 399 .....Repositionable element supported by cable (e.g., traveling block) 400 ....Having axes perpendicular or skewed 401 ...With portable block for elements and hand manipulated means for removably fastening block to support base or load 402 ....Having portion of block repositionable for insertion or removal of cable or for exposure of elements 403 ....With guard or guide for maintaining cable on elements 404 ....Including antifriction means for elements 405 ..With block for element and portion thereof repositionable for insertion or removal of cable or for exposure of element 406 ...Portion revolves about axis of rotation of element 407 ..With means, or element structure, enabling object or obstruction on cable to bypass or travel over element 408 ..With block for element having stationary portion adapted to coact with element to grip cable 409 ..With portable block for element and hand manipulated means for removably fastening block to support or load 410 ...Fastening means remotely operable or breakaway type 411 ...With guard or guide for maintaining cable on element 412 ...Including antifriction means for element 413 ..With means for affixing element to support base and allowing relative movement therebetween 414 ...Including elastic member 415 ...Including pivotal, rotational, or swivel connection 416 ..With antifriction means for element 417 .Having cable contacting portion revolving around another component of device * ****************************** * CROSS-REFERENCE ART COLLECTIONS * ****************************** 900 CABLE PULLING DRUM HAVING WAVE MOTION RESPONSIVE ACTUATOR FOR OPERATING DRIVE OR ROTATION RETARDING MEANS 901 ANTIFRICTION MEANS FOR CABLE PULLING DRUM 902 EITHER DRUM, PULLEY WHEEL ELEMENT, OR CABLE CONSTRUCTED FROM SPECIFIC MATERIAL 903 YIELDABLE, CONSTANT ENGAGEMENT, FRICTION COUPLING (E.G., SLIP CLUTCH) IN DRIVE FOR CABLE PULLING DRUM * ****************************** * DIGESTS * ****************************** DIG 1 Jack bases DIG 2 Electric screw jacks DIG 3 Jack handles DIG 4 Object engaging heads for jacks DIG 5 Means for depressing foot brake when adjusting same DIG 6 Flexible rack and pinion DIG 7 Printers form trucks DIG 8 Screw jacks, plural section nut DIG 9 Vehicle-operated lift platform DIG 10 Tire or rim expanding or contracting devices DIG 11 Cable drum feed for presser DIG 12 Pawls DIG 13 Vehicle retarding drums DIG 14 Rope attachmentt DIG 15 Motor clamps DIG 16 AUTOMOBILE TRANSMISSION JACK