US Patent Class 37
EXCAVATING



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Current as of: June, 1999
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Products
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Services

  DF  CLASS NOTES
300  DF  GRAVE DIGGER
301  DF  LAND CLEARER
302  DF  .~ Tree or stump remover
303  DF  .~ Stone remover
3  DF  PEAT EXCAVATORS
196  DF  SNOW OR ICE REMOVING OR GROOMING BY PORTABLE DEVICE
197  DF  .~ Process
198  DF  .~ Railway clearer
199  DF  .~.~ With melter
200  DF  .~.~.~ Heated plow
201  DF  .~.~ Explosive
202  DF  .~.~ Fluid current conveyor
203  DF  .~.~ For clearing single rail of set
204  DF  .~.~.~ Electrified rail
205  DF  .~.~.~ Including rotary excavating tool
206  DF  .~.~.~.~ And scraper blade
207  DF  .~.~.~ Including means clearing side of, or groove in, rail
208  DF  .~.~ With endless conveyor
209  DF  .~.~ Having rotary excavating tool
210  DF  .~.~.~ Plural rotary tools
211  DF  .~.~.~.~ Diverse tools performing different stages of operation
212  DF  .~.~.~.~ And V-shaped scraper blade
213  DF  .~.~.~ Screw-type auger
214  DF  .~.~ Having scraper blade
215  DF  .~.~.~ Inclined plane with V-divider
216  DF  .~.~.~.~ Having auxiliary blade or shiftable divider
217  DF  .~.~.~ V-shaped
218  DF  .~.~.~ Diagonal
219  DF  .~ Snow or ice surface groomer
220  DF  .~.~ Including rut cutter
221  DF  .~.~ Having diverse tools
222  DF  .~.~.~ Including rotary tool
223  DF  .~.~ Having rotary tool
224  DF  .~.~.~ Compacting roller
225  DF  .~ With compressor die
226  DF  .~.~ And heater
227  DF  .~ With melter
228  DF  .~.~ Having heated transport chamber
229  DF  .~.~.~ Electric or solar heat source
230  DF  .~.~ Manually powered
231  DF  .~ With specific means to facilitate connection to, or disconnection from, vehicle
232  DF  .~ Vehicle mount with obstacle responsive trip, or yieldable tool (e.g., brush)
233  DF  .~.~ Resilient impeller or blade
234  DF  .~ Including specific hydraulic control system to position implement
235  DF  .~ Vehicle mount including power lift
236  DF  .~.~ Power means is hydraulically actuated piston
237  DF  .~ With endless conveyor
238  DF  .~.~ And rotary excavating tool
239  DF  .~.~ Multistage conveyors
240  DF  .~.~ Carrying excavating tool
241  DF  .~ Combined or convertible
242  DF  .~.~ Rotary excavating tool
243  DF  .~.~.~ Lawnmower
244  DF  .~ Motorized rotary excavating tool
245  DF  .~.~ Tool arresting means responsive to sensed condition
246  DF  .~.~ Electric motor drive
247  DF  .~.~ Rotor shaft adjustable relative to direction of travel
248  DF  .~.~ Diverse multistage rotary tools or tool portions (e.g., feeding and throwing, etc.)
249  DF  .~.~.~ Including screw-type auger for first stage
250  DF  .~.~.~.~ Augers on separate shafts
251  DF  .~.~.~.~ And centrifugal impeller for final stage
252  DF  .~.~.~.~.~ Auger and impeller on single shaft
253  DF  .~.~ Fed by scraper blade
254  DF  .~.~.~ Including screw-type auger
255  DF  .~.~.~.~ Augers on separate shafts
256  DF  .~.~.~ Including centrifugal impeller
257  DF  .~.~ Screw-type auger
258  DF  .~.~.~ Having plural vane segments
259  DF  .~.~ Centrifugal impeller
260  DF  .~.~ Having specific flow guide
261  DF  .~.~.~ Having motor powered adjustment
262  DF  .~.~.~ Vane within chute controls flow path
263  DF  .~ Tool prepares wheel path for passage of wheel
264  DF  .~ Scoop
265  DF  .~.~ Manually powered
266  DF  .~ Scraper blade
267  DF  .~.~ Invertible
268  DF  .~.~ Pulled (e.g., by horse or vehicle)
269  DF  .~.~.~ V-shaped
270  DF  .~.~ Mounted on surface contacting support or guide
271  DF  .~.~.~ For adjusting height of blade
272  DF  .~.~ V-shaped
273  DF  .~.~.~ Adjustable or collapsible apex
274  DF  .~.~.~ And auxiliary wing or extension
275  DF  .~.~.~.~ Top flap
276  DF  .~.~.~ Diverging forwardly
277  DF  .~.~.~ Supported on inclined plane
278  DF  .~.~.~ Manually powered
279  DF  .~.~ Diagonally oriented
280  DF  .~.~.~ Including side gate discharge preventer
281  DF  .~.~.~ And auxiliary wing or extension
282  DF  .~.~.~ Supported on inclined plane
283  DF  .~.~.~ Adjustable about central vertical hinge
284  DF  .~.~.~ Manually powered
285  DF  .~ Manually powered
304  DF  SELF-LOADING VEHICLE
305  DF  .~ Having endless digger or conveyor
306  DF  .~ Elevating wheel
307  DF  BENEATH A BODY OF WATER (E.G., DREDGER)
308  DF  .~ With signal, scale, indicator, or inspection means
309  DF  .~ With means to control dredger operation (e.g., movement of dredged material) in response to sensed condition
310  DF  .~.~ Swell compensator
311  DF  .~.~ Suction relief valve
312  DF  .~.~ Control of swing or swing speed
313  DF  .~ By use of submarine or undersea vessel
314  DF  .~ Adapted to excavate specific discrete material
315  DF  .~.~ Shellfish
316  DF  .~.~.~ Including rake or scoop structure
317  DF  .~ Suction
318  DF  .~.~ Having intake screen
319  DF  .~.~.~ And material size reducer (e.g., crusher)
320  DF  .~.~ With pumping chamber
321  DF  .~.~ With means to introduce lift agent directly into suction pipe
322  DF  .~.~.~ With downstream directed jet nozzle
323  DF  .~.~ With fluid jet digger adjacent suction inlet
324  DF  .~.~ Including driven digger adjacent suction inlet (e.g., cutterhead dredger)
325  DF  .~.~.~ With specific bearing, or means to lubricate or seal
326  DF  .~.~.~ Rotary
329  DF  .~.~.~.~ Axis transverse with respect to suction pipe
330  DF  .~.~.~.~ Axis vertical with respect to surface of body of water
331  DF  .~.~.~.~ Axis longitudinal with respect to suction pipe
327  DF  .~.~.~.~ Specific cutterhead structure
328  DF  .~.~.~.~.~ Including distinct tooth or tooth mounting
332  DF  .~.~.~ Endless
333  DF  .~.~ Draghead dredger (e.g., dustpan dredger)
334  DF  .~.~ With pipe suspension or support (e.g., ladder structure)
335  DF  .~.~ Pipe or nozzle structure
336  DF  .~.~.~ With coupling (e.g., connector)
337  DF  .~ Rotary digger (e.g., bucket wheel)
338  DF  .~ Endless
339  DF  .~.~ Specific bucket structure
340  DF  .~ Grab
341  DF  .~ Scoop or bucket
342  DF  .~ With means to scour or scrape (e.g., propeller means, digging teeth, plow)
343  DF  .~.~ Rotary digging element
344  DF  .~.~ Nozzle
345  DF  .~ With vessel, propulsion, or anchor structure (e.g., bank spud, spud brace)
346  DF  .~.~ Bottom spud anchor
347  DF  DITCHER
348  DF  .~ Condition responsive
349  DF  .~ With crumber
350  DF  .~ Having screw digger
351  DF  .~.~ With conveyor
352  DF  .~ Having endless digger
353  DF  .~.~ Endless bucket
354  DF  .~.~.~ Transverse cut
355  DF  .~.~.~ Longitudinal cut
356  DF  .~.~.~.~ With side cutters
357  DF  .~.~.~.~ With distinct rotary digger
358  DF  .~.~.~.~ Reciprocating endless digger
359  DF  .~.~.~.~ With longitudinal endless conveyor
360  DF  .~.~.~.~ With transverse endless conveyor
361  DF  .~.~.~.~.~ Drive-related feature
362  DF  .~.~.~.~ Drive-related feature
363  DF  .~.~.~.~ Hand operated
364  DF  .~ With side or auxiliary cutter
365  DF  .~.~ Rotary
91  DF  .~ Wheel excavator
92  DF  .~.~ Longitudinal axis
93  DF  .~.~.~ Conveyor
94  DF  .~.~ Transverse axis
95  DF  .~.~.~ Conveyor
96  DF  .~.~.~.~ Longitudinal endless
97  DF  .~.~.~.~ Transverse endless
366  DF  .~ Plow
367  DF  .~.~ Slit ditcher
368  DF  .~.~.~ Including longitudinal endless conveyor
369  DF  .~.~.~.~ And transverse endless conveyor
370  DF  .~.~ Mole plow
372  DF  .~.~ With plow supported wheel or supported on wheel frame
373  DF  .~.~ With conveyor
374  DF  .~.~.~ Wheel and belt
375  DF  .~.~.~ Longitudinal endless conveyor
376  DF  .~.~.~.~ And transverse endless conveyor
377  DF  .~.~.~.~.~ With colter
378  DF  .~.~ With colter
379  DF  .~ Shovel or scoop
380  DF  .~.~ Slit ditcher
104  DF  RAILWAY GRADERS
105  DF  .~ Side former
106  DF  .~.~ Scoop
107  DF  .~.~.~ Endless conveyor
381  DF  ROAD GRADER-TYPE
382  DF  .~ Condition responsive
383  DF  .~ Including ground supported, grader guiding rail
384  DF  .~.~ Adjustable digger
385  DF  .~.~.~ Rotary digger
386  DF  .~ Rotary digger
387  DF  .~.~ Adjustable
388  DF  .~ Transverse endless digger
389  DF  .~ Plow with transverse endless conveyor
390  DF  .~.~ Disc plow
391  DF  .~ Plow with transverse conveyor wheel
392  DF  .~.~ And endless conveyor
393  DF  .~ Plow with inclined axis conveyor wheel
394  DF  CABLE-OPERATED (E.G., DRAGLINE)
395  DF  .~ Boom-type
396  DF  .~.~ Including means to control digging, hoisting, and dumping
397  DF  .~.~ Including mounting or support structure (e.g., boom support, sheave or pulley support)
398  DF  .~ Scoop or bucket
399  DF  .~.~ Including support or mounting device (e.g., hitch, shackle, lifting or dumping trunion)
400  DF  .~ Trolley-supported
401  DF  .~.~ Including cable or rope control means to facilitate loading, transporting, or dumping
403  DF  COMBINED OR CONVERTIBLE
468  DF  .~ Having quick-connect coupling
404  DF  .~ Combined with subsoiler
405  DF  .~ Combined with fork or rake
406  DF  .~ Combined with clamp, grapple, or shear
407  DF  .~ With scraper
408  DF  .~.~ Integrally mounted to a tool body and independently usable by re- positioning the tool body
409  DF  .~.~ Multicomponent tool (e.g., scoop or bucket) convertible by relative movement of tool parts
410  DF  .~.~ Separate tools simultaneously mounted and independently usable
411  DF  SCOOP OR EXCAVATING AND TRANSPORTING CONTAINER
413  DF  .~ With alarm, indicator, signal, or inspection means
412  DF  .~ Supported on vehicle between longitudinally spaced ground supports
414  DF  .~.~ Condition responsive or programmable means controls the excavating operation
415  DF  .~.~.~ Control of attitude or depth of cut
416  DF  .~.~.~ Control of scoop component (e.g., elevator, apron, or ejector)
417  DF  .~.~ With specific suspension or means to steer or facilitate mounting of implement on vehicle
418  DF  .~.~ With tandem or plural scoops or compartments
419  DF  .~.~ With means to aid loading or load distribution
420  DF  .~.~.~ By auger
421  DF  .~.~.~ By digging movement of apron
422  DF  .~.~.~ By endless conveyor
423  DF  .~.~.~.~ With particular conveyor feature including drive means
424  DF  .~.~ With coaction between apron or elevator and bowl
425  DF  .~.~.~ Actuated by fluid means
426  DF  .~.~ With coaction between apron or elevator and ejector
427  DF  .~.~ With significant bowl structure or manipulation
428  DF  .~.~.~ Actuated by fluid means
429  DF  .~.~ With significant apron structure or manipulation
430  DF  .~.~.~ Actuated by fluid means
431  DF  .~.~ With particular unloading feature
432  DF  .~.~.~ Rear unloading
433  DF  .~.~.~ Revolving-type
435  DF  .~ Mounted rearwardly of vehicle
467  DF  .~.~ Handled or hand operated
436  DF  .~.~ Bowl operatively connected to wheel axle
437  DF  .~.~.~ Including rear unloading
438  DF  .~.~.~.~ Actuated by fluid means
439  DF  .~.~.~ With caster wheel or shoe
440  DF  .~.~.~ Lever and latch mechanism
441  DF  .~.~ Dumping runner or revolving-type
434  DF  .~ Manually operated (e.g., two-wheel barrow)
442  DF  .~ Pushed forwardly of vehicle for filling
443  DF  .~ Dipper-type (e.g., backhoe bucket)
444  DF  .~ Scoop or bucket structure, per se
445  DF  .~.~ Including door structure or operator
446  DF  DIGGING EDGE
447  DF  .~ Oscillating or reciprocating
448  DF  .~ Corner guard (e.g., corner tooth)
449  DF  .~ Repositionable digging edge (e.g., reversible)
450  DF  .~ Removable digging edge having integral tooth adaptor
451  DF  .~ Distinct wear element mounted between teeth
452  DF  .~ Tooth or adaptor
453  DF  .~.~ Having wear cap
454  DF  .~.~ Repositionable or replaceable tooth (e.g., reversible)
455  DF  .~.~ Mounting or retaining means
456  DF  .~.~.~ Including pin or key
457  DF  .~.~.~.~ Having resilient elastomeric element
458  DF  .~.~.~.~ Having resilient metallic element
459  DF  .~.~.~.~.~ Wire or rod formed
460  DF  .~ Specific material (e.g., specialty steel, heat treatment of material, specific hardness test)
142.5  DF  DITCH FILLER
182  DF  ORANGE-PEEL BUCKETS
461  DF  CLAMSHELL BUCKET
184  DF  .~ Common pivot
185  DF  .~.~ Crossed lever
186  DF  .~ Contiguous pivots
187  DF  .~ Spaced pivots
188  DF  .~ Link-connected
189  DF  ROTARY DIGGER
190  DF  .~ Endless conveyor
462  DF  ENDLESS DIGGER
463  DF  .~ With endless conveyor
464  DF  .~.~ Having nonbucket-type digging means
465  DF  .~ Digging chain, bucket, blade, or tooth structure, per se
195  DF  PROCESSES
466  DF  MISCELLANEOUS
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CROSS-REFERENCE ART COLLECTIONS
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901  DF  Bucket cleaners
902  DF  Hydraulic motors
903  DF  Scoop or scraper attachments
904  DF  Vibration means for excavating tool
905  DF  Nondredge excavating by fluid contact or explosion
906  DF  Visual aids and indicators for excavating tool
907  DF  Automatic leveling excavators
908  DF  Canal cleaners