| Class Number |
Class Name |
No. of Patents |
| 175/202 |
Above-ground means for relatively moving below-ground tool elements |
32 |
| 175/24 |
Automatic control |
102 |
| 175/38 |
In response to drilling fluid circulation |
85 |
| 175/27 |
Of advance or applied tool weight |
129 |
| 175/26 |
Of boring means including a below-ground drive prime mover |
107 |
| 175/25 |
Of fluid pressure below ground |
56 |
| 175/293 |
Below-ground (1) hammer, or (2) impact members |
42 |
| 175/294 |
Combined with safety joint |
3 |
| 175/298 |
Continuous unidirectional rotary motion of one telescoping member effects consecutive impacts |
22 |
| 175/296 |
Fluid-operated |
212 |
| 175/297 |
Restricted orifice for initially delaying escape of restraining fluid |
81 |
| 175/299 |
Resiliently biased |
57 |
| 175/305 |
Telescoping members relatively rotatable |
19 |
| 175/306 |
With means to couple members to prevent relative rotation |
24 |
| 175/295 |
With noncutting portion forwardly of sleeve impact member having a cutting portion (e.g., reamer) |
6 |
| 175/300 |
With releasable means to detachably retain telescoping members against axial reciprocation |
28 |
| 175/302 |
Condition for release adjustable |
10 |
| 175/303 |
Adjustable below ground |
4 |
| 175/301 |
Frangible |
6 |
| 175/304 |
Resiliently biased latch |
28 |
| 175/319 |
Below-ground mechanical motion converting means relatively moving plural cutting edges |
11 |
| 175/327 |
Bit or bit element |
18 |
| 175/382 |
Adjustable cutter element |
15 |
| 175/383 |
Adjustment presents different cutting edge |
15 |
| 175/384 |
Radially adjustable |
25 |
| 175/396 |
Axially parallel side wall with transverse cuttings retaining portion |
7 |
| 175/385 |
Bit with leading portion (e.g., pilot) forming smaller diameter initial bore |
105 |
| 175/389 |
Impact type |
20 |
| 175/390 |
Plural larger diameter steps |
9 |
| 175/388 |
Leading portion is a screw |
16 |
| 175/387 |
Leading portion is core forming type |
8 |
| 175/392 |
Leading portion is forked rotary type |
5 |
| 175/386 |
Leading portion is separable starter |
13 |
| 175/391 |
Plural larger diameter steps |
66 |
| 175/402 |
Casing shoe type |
29 |
| 175/403 |
Core forming type |
77 |
| 175/405 |
Impact or percussion type |
29 |
| 175/405.1 |
Includes diamond |
37 |
| 175/404 |
With core-breaking means |
47 |
| 175/379 |
Cutting edge self-renewable during operation |
38 |
| 175/401 |
Cutting edges facing in opposite axial directions |
17 |
| 175/381 |
Cutting edges relatively longitudinally movable during operation |
21 |
| 175/397 |
Forked rotary nontracking |
12 |
| 175/414 |
Impact or percussion type |
73 |
| 175/415 |
Combined with rotary |
140 |
| 175/420 |
Cruciform |
12 |
| 175/420.1 |
Insert |
157 |
| 175/420.2 |
Includes diamond |
39 |
| 175/416 |
Noncircular bore cutter |
7 |
| 175/417 |
With internal-fluid passage |
76 |
| 175/419 |
Cruciform |
8 |
| 175/418 |
Plural openings |
69 |
| 175/328 |
Magnetized or with magnet |
8 |
| 175/406 |
Noncutting portion forwardly of cutting portion (e.g., reamer) |
93 |
| 175/407 |
Impact type |
9 |
| 175/398 |
Nonsymmetrical bit |
67 |
| 175/400 |
Nonsymmetrical arrangement of opening for cuttings or fluid |
34 |
| 175/399 |
With bore wall engaging guide |
46 |
| 175/412 |
Plural separable cutter elements |
18 |
| 175/413 |
Independently attachable |
80 |
| 175/331 |
Rolling cutter bit or rolling cutter bit element |
71 |
| 175/342 |
Adjustable cutter element |
6 |
| 175/354 |
Axle rotatable with cutter |
26 |
| 175/334 |
Bit with leading cutter forming smaller diameter initial bore |
24 |
| 175/335 |
Leading fixed cutter |
13 |
| 175/355 |
Circumferentially displaced cutter axes |
13 |
| 175/357 |
Detachable multiaxis support or spider |
3 |
| 175/358 |
Mutually contacting cutter supports |
1 |
| 175/359 |
With bearing or seal details |
16 |
| 175/356 |
Stub axle only |
12 |
| 175/332 |
Core forming-type bit |
7 |
| 175/333 |
With core-breaking means |
9 |
| 175/360 |
Cross axle with stub axle |
1 |
| 175/361 |
Cross axle |
10 |
| 175/364 |
Removable cross axle or bushing |
18 |
| 175/363 |
Separable supports |
9 |
| 175/362 |
Vertically disaligned cross axle sections |
0 |
| 175/367 |
Detachable stub axle, bushing or bearing |
13 |
| 175/368 |
Releasable cutter securing device |
8 |
| 175/373 |
Disk cutter |
34 |
| 175/378 |
Irregular tooth cutter row |
51 |
| 175/350 |
Laterally offset cutter axis |
8 |
| 175/353 |
Cone or frustum rolling cutter |
30 |
| 175/351 |
Disk blade |
11 |
| 175/352 |
Plural coaxial cutters |
3 |
| 175/348 |
Longitudinal axis cutter |
11 |
| 175/349 |
With transverse axis cutter |
4 |
| 175/344 |
Noncutting portion forwardly of rolling cutter (e.g., reamer) |
36 |
| 175/345 |
Longitudinal axis cutter |
11 |
| 175/347 |
Removable axle or bushing |
14 |
| 175/346 |
Separable support for cutter axle |
16 |
| 175/376 |
Nonsymmetrical bit (e.g., nontracking) |
73 |
| 175/365 |
Outwardly directed stub axle |
18 |
| 175/341 |
Plural rolling cutters with intermeshing teeth |
26 |
| 175/336 |
Rolling cutter bit with fixed cutter |
35 |
| 175/366 |
Separable support for stub axle |
16 |
| 175/374 |
Specific or diverse material |
262 |
| 175/375 |
Welded |
44 |
| 175/377 |
Spiral rib or tooth row |
18 |
| 175/369 |
Stub axle cutter securing means |
28 |
| 175/370 |
Released by antifriction bearing disassembly |
10 |
| 175/371 |
With bearing or seal details |
250 |
| 175/372 |
Antifriction type |
84 |
| 175/339 |
With drilling fluid conduit details |
91 |
| 175/340 |
Fluid conduit lining or element (e.g., slush tube or nozzle) |
134 |
| 175/337 |
With drilling fluid supply to bearing |
72 |
| 175/338 |
With rotary or endless carrier |
7 |
| 175/343 |
Wobbling cutter |
17 |
| 175/425 |
Specific or diverse material |
100 |
| 175/434 |
Diamond |
185 |
| 175/426 |
Insert |
282 |
| 175/427 |
For a mine roof drill bit type |
31 |
| 175/428 |
Preformed cutting element (e.g., compact) mounted on a distinct support (e.g., blank, stud, shank) |
165 |
| 175/430 |
Having a noncircular or nonplanar cutting face |
135 |
| 175/431 |
Having a particular orientation or location |
194 |
| 175/433 |
Having a specified thermal property |
32 |
| 175/429 |
Including a nozzle |
35 |
| 175/432 |
With support detail |
191 |
| 175/435 |
Welded, brazed, or soldered |
47 |
| 175/421 |
Symmetrical forked rotary type (e.g., fishtail) |
14 |
| 175/380 |
Unsupported abrading particle type (e.g., shot) |
2 |
| 175/408 |
With bit guide or bore wall compacting device |
90 |
| 175/393 |
With fluid conduit lining or element (e.g., slush tube) |
234 |
| 175/394 |
With helical-conveying portion |
178 |
| 175/395 |
Impact type |
25 |
| 175/5 |
Boring a submerged formation |
142 |
| 175/7 |
Boring from floating support with submerged independent anchored guide base |
231 |
| 175/9 |
Boring from nonbuoyant support |
54 |
| 175/8 |
Boring from submerged buoyant support |
27 |
| 175/10 |
Boring with submersible vertically movable guide |
17 |
| 175/6 |
Boring with underwater tool drive prime mover |
27 |
| 175/54 |
Boring by below ground recirculation of unsupported elements (e.g., shot) |
2 |
| 175/11 |
Boring by directly applying heat to fluidize or comminute |
23 |
| 175/14 |
Combustion is confined chamber having restricted discharge orifice |
19 |
| 175/12 |
Combustion of the formation material |
8 |
| 175/16 |
Electrically produced heat |
38 |
| 175/15 |
Rotating the heating tool |
10 |
| 175/13 |
With introduction of slag forming flux |
1 |
| 175/91 |
Boring means including a continuously rotating bit describing a noncircular cross-sectional bore |
30 |
| 175/2 |
Boring with explosion in inaccessible hole |
27 |
| 175/4.6 |
Concave-shaped charge |
166 |
| 175/4.5 |
Directing successive projectiles or charges in same path |
19 |
| 175/4 |
Driving core receiver by explosion or with receptacle collecting material in bore |
17 |
| 175/3.5 |
Explosive charge carried by projectile |
3 |
| 175/4.53 |
Firing chamber movable in bore relative to carrier or another firing chamber |
11 |
| 175/4.56 |
Firing control mechanically actuated in bore |
95 |
| 175/4.55 |
Independent firing of plural charges |
47 |
| 175/4.57 |
Projectile forms bore |
16 |
| 175/4.58 |
With means to initially restrain projectile for pressure build-up |
5 |
| 175/4.59 |
With means to prevent preliminary bore fluid contact |
5 |
| 175/3 |
Severing formed core by explosion |
1 |
| 175/4.54 |
With bore condition firing control, or compensating means |
78 |
| 175/4.51 |
With position orienting or indicating |
62 |
| 175/4.52 |
With wall engaging packer or anchor |
86 |
| 175/19 |
Boring without earth removal (i.e., compacting earth formation) |
225 |
| 175/20 |
Combined with earth removal (e.g., removing sample) |
170 |
| 175/22 |
Drive point detached from shaft to form cased bore or with installation of casing |
52 |
| 175/23 |
Drive point retracted through shaft or casing |
17 |
| 175/21 |
Fluid passage to exterior of drive point |
66 |
| 175/315 |
Combined |
23 |
| 175/108 |
Common drive or advancing means for concurrently boring along laterally spaced axes |
17 |
| 175/87 |
Convertible |
13 |
| 175/263 |
Cutter element laterally shiftable below ground (e.g., expansible) |
29 |
| 175/273 |
Cutter element shifted by cam or gear axially rotatable relative to shaft |
18 |
| 175/270 |
Cutter element shifted by dropped element |
1 |
| 175/267 |
Cutter element shifted by fluid pressure |
71 |
| 175/269 |
Fluid pressure acts against spring biased part |
62 |
| 175/268 |
With dropped element |
5 |
| 175/284 |
Cutter element shifted by longitudinally relatively movable parts |
20 |
| 175/286 |
Cam or gear engaging cutter element |
34 |
| 175/289 |
Cutter element spring biased to retracted position |
17 |
| 175/288 |
Cutter element substantially longitudinally movable on shaft |
9 |
| 175/287 |
With separate latch holding cutter element in shifted position |
5 |
| 175/285 |
Toggle or linkage between movable parts |
25 |
| 175/272 |
Cutter element shifted by relatively longitudinally movable threaded elements |
8 |
| 175/292 |
Pivoted about substantially longitudinal axis |
39 |
| 175/265 |
Plural cutter elements longitudinally relative movable into transverse alignment |
18 |
| 175/266 |
Plural selectively shiftable cutter elements |
13 |
| 175/291 |
Spring biased |
11 |
| 175/271 |
With latch operated by fluid pressure or dropped element |
6 |
| 175/290 |
With latch |
2 |
| 175/264 |
With separable means holding tool collapsed above ground only |
1 |
| 175/274 |
With shifting mechanism spring biased to operative position |
7 |
| 175/279 |
Cam or gear means movable to shift cutter element |
11 |
| 175/280 |
With forwardly extending noncutting portion |
0 |
| 175/281 |
Cutter element substantially longitudinally movable on shaft |
1 |
| 175/282 |
Plural elements expanded into single socket |
0 |
| 175/283 |
With forwardly extending noncutting portion |
2 |
| 175/275 |
With separate latch |
1 |
| 175/276 |
Frangible or discardable element |
5 |
| 175/277 |
Latch holds mechanism retracted |
2 |
| 175/278 |
Latch return shifting mechanism to inoperative position |
0 |
| 175/53 |
Enlargement of existing pilot throughbore requiring accessibility to existing opposite bore ends to insert and remove tool |
162 |
| 175/18 |
Ice boring |
41 |
| 175/78 |
Means carried by housing insertable in inaccessible hole to advance side wall tool laterally |
59 |
| 175/73 |
Means traveling with tool to constrain tool to bore along curved path |
330 |
| 175/76 |
Axially spaced opposed bore wall engaging guides |
119 |
| 175/75 |
Normally curved guide or shaft |
78 |
| 175/74 |
Sectional guide or shaft having means to lock sections in angular relation while boring |
123 |
| 175/424 |
Miscellaneous (e.g., earth-boring nozzle) |
213 |
| 175/56 |
Natural vibration characteristic of an element of boring means related (1) to natural vibration characteristic of another element, or (2) to frequency of an imposed motion |
95 |
| 175/57 |
Processes |
397 |
| 175/61 |
Boring curved or redirected bores |
721 |
| 175/62 |
Boring horizontal bores |
293 |
| 175/65 |
Boring with specific fluid |
267 |
| 175/68 |
Anti-agglomeration treatment of gaseous drilling fluid |
3 |
| 175/67 |
Boring by fluid erosion |
231 |
| 175/69 |
Combined liquid and gaseous fluid |
75 |
| 175/71 |
Gaseous fluid or under gas pressure |
76 |
| 175/70 |
Plural distinguishable liquids |
31 |
| 175/72 |
Prevention of lost circulation or caving |
235 |
| 175/66 |
Treating spent or used fluid above ground |
284 |
| 175/64 |
Chemical reaction with earth formation or drilling fluid constituent |
78 |
| 175/58 |
Sampling of earth formations |
186 |
| 175/59 |
Retaining fluid or taking separate fluid sample |
87 |
| 175/60 |
Transporting sample to surface by fluid |
18 |
| 175/77 |
Side wall tool fed laterally without rotation from inaccessible hole |
26 |
| 175/55 |
Tool actuation by reaction of rotating eccentric mass |
53 |
| 175/89 |
Tool element or continuously driven flexible or articulated endless member |
10 |
| 175/90 |
Flexible or articulated member carried on support swingable or laterally movable relative to bore axis |
8 |
| 175/257 |
Tool removable or insertable through or around driving or driven shaft or casing |
52 |
| 175/258 |
Laterally shiftable cutter element movable through shaft |
31 |
| 175/260 |
Cutter element engages torque transmitting abutment on shaft when expanded |
12 |
| 175/261 |
With additional torque transmitting abutment on bit head and shaft |
8 |
| 175/259 |
Plural cutter elements longitudinally relatively movable into transverse alignment |
14 |
| 175/262 |
Tool movable exteriorly of shaft |
11 |
| 175/79 |
Tool shaft advanced relative to guide insertable in inaccessible hole to change direction of advance |
41 |
| 175/82 |
Guide carried by shaft to operative position |
39 |
| 175/83 |
With clutch means acting between shaft and guide |
7 |
| 175/80 |
Tool telescopes over guide having surface set at angle in hole |
51 |
| 175/81 |
With anchor for guide engaging hole side wall |
76 |
| 175/423 |
Wedging slip assembly for supporting a pipe or rod |
70 |
| 175/84 |
With above-ground cleaner for boring means |
42 |
| 175/220 |
With above-ground guide for relatively advancing tool |
93 |
| 175/207 |
With above-ground means for handling drilling fluid or cutting |
111 |
| 175/214 |
Fluid head on tool shaft having lateral port and axial passage with seal for means reciprocable in the head |
34 |
| 175/209 |
Fluid or cuttings directing or receiving means engaging bore entrance |
81 |
| 175/210 |
Anchored to bore wall |
14 |
| 175/211 |
Axially supported by tool shaft |
28 |
| 175/208 |
Fluid spray |
5 |
| 175/212 |
Pressurized gas supply |
19 |
| 175/216 |
Standpipe |
5 |
| 175/217 |
With pump |
31 |
| 175/213 |
With suction pump inlet communicating with bore bottom |
75 |
| 175/215 |
With tool shaft having plural passages for drilling fluid |
125 |
| 175/218 |
With valve |
78 |
| 175/206 |
With above-ground means for preparing or separating drilling fluid constituents |
199 |
| 175/203 |
With above-ground means to advance or retract boring means |
132 |
| 175/162 |
With above-ground means to feed tool |
150 |
| 175/135 |
With above-ground means to impact an earth-penetrating means |
51 |
| 175/161 |
With above-ground means to move tool to a dumping location offset from bore |
18 |
| 175/86 |
With below-ground personal accommodation |
12 |
| 175/92 |
With below-ground tool drive prime mover |
61 |
| 175/93 |
Below-ground (1) generation of motive fluid, or (2) storage of motivating energy |
43 |
| 175/100 |
Discharge passage for motive fluid directed toward bore entrance |
28 |
| 175/104 |
Electric |
55 |
| 175/105 |
Reciprocating |
7 |
| 175/107 |
Fluid rotary type |
351 |
| 175/95 |
Plural below-ground drive prime movers |
16 |
| 175/96 |
Plural cutter elements driven by individual prime movers |
37 |
| 175/103 |
With above-ground means |
33 |
| 175/102 |
With below-ground conveyer or impeller for removal of cuttings |
24 |
| 175/94 |
With below-ground feed means |
76 |
| 175/97 |
With means to anchor prime movers support to bore wall |
10 |
| 175/98 |
Expansible anchor |
17 |
| 175/99 |
Fluid-operated |
78 |
| 175/106 |
With mechanical motion-converting means |
72 |
| 175/101 |
With positive connection between tool and support shaft for rotary below ground motor |
45 |
| 175/39 |
With bit wear signal generating |
63 |
| 175/307 |
With cutting edge cover |
7 |
| 175/230 |
With expansible bore wall anchor (e.g., packer) |
64 |
| 175/17 |
With heating or cooling (1) within the bore, or (2) drilling fluid |
39 |
| 175/52 |
With magazine for successively moving unconnected, oriented tool or shaft sections to use position |
150 |
| 175/88 |
With means carrying cuttings laterally of bore axis comprising (1) chute, (2) conveyer, or (3) vehicle |
24 |
| 175/231 |
With means movable relative to tool below ground to control eccentric fluid emission |
15 |
| 175/232 |
With means movable relative to tool below ground to stop flow toward bore bottom |
23 |
| 175/238 |
Flow-stopping means includes relatively movable cutter element |
5 |
| 175/236 |
In sample receiver removable through below-ground tool shaft |
23 |
| 175/237 |
Means comprises dropped element |
19 |
| 175/233 |
Movable to seal sample receiver at bore bottom pressure |
12 |
| 175/243 |
Resiliently biased or composed of flexible material |
19 |
| 175/241 |
Stops flow by movement about fixed pivot |
3 |
| 175/242 |
Pivot transverse to tool axis |
13 |
| 175/234 |
With longitudinally spaced valve seats |
22 |
| 175/235 |
Seat engaged to stop upward flow |
6 |
| 175/239 |
With undisturbed core receiver |
5 |
| 175/240 |
Movable means adapted to underlie severed core |
3 |
| 175/317 |
With means movable relative to tool or shaft to control below-ground passage |
94 |
| 175/318 |
Valve prevents upward flow |
65 |
| 175/244 |
With means movable relative to tool to receive, retain, or sever undisturbed core |
33 |
| 175/245 |
Core bit closure relative upwardly movable by core |
9 |
| 175/249 |
Core-retaining or severing means |
52 |
| 175/251 |
Actuated upon relative movement between tool and tool shaft |
15 |
| 175/252 |
Relative rotary movement |
6 |
| 175/250 |
Fluid-actuated |
31 |
| 175/254 |
Mounted on transverse pivot |
7 |
| 175/255 |
Sliding wedge type (e.g., slips) |
4 |
| 175/253 |
With element holding retaining or severing means inactive |
13 |
| 175/246 |
Receiver removable through below-ground tool shaft |
50 |
| 175/248 |
Core forming cutting edge or element on receiver |
14 |
| 175/247 |
With fluid pressure-responsive means to remove receiver or operate latch |
8 |
| 175/205 |
With means providing pressurized gas contact with drilling liquid |
15 |
| 175/122 |
With means to feed drive |
78 |
| 175/113 |
With means to simultaneously feed and rotate tool from a single mechanical element |
49 |
| 175/114 |
Constant rotation rate permitted regardless of (1) release of feed force, or (2) change in feed rate |
4 |
| 175/121 |
Rotary drive for relatively advancing feed screw |
13 |
| 175/118 |
With feed anchor in earth wall being bored |
3 |
| 175/313 |
With mechanical cleaner for bit or cutter element |
24 |
| 175/85 |
With orienting or racking means for unconnected tools or sections of shaft or casing |
281 |
| 175/219 |
With particular accommodation for personnel (e.g., seat or protector) |
45 |
| 175/308 |
With receptacle |
19 |
| 175/309 |
Removable or insertable through below-ground tool shaft |
11 |
| 175/312 |
Sieve or strainer |
14 |
| 175/311 |
Suspended below bit |
4 |
| 175/310 |
With helical conveyer |
10 |
| 175/316 |
With relatively movable parts to facilitate cleaning without disassembly |
8 |
| 175/256 |
With releasable means normally holding jointed shaft sections in angular relation |
35 |
| 175/226 |
With sample covering or coating means (1) dispensed into sample receiver, or (2) fluent |
28 |
| 175/1 |
With seismic shock generating |
42 |
| 175/51 |
With self-acting cyclic advance and retraction of tool or tool shaft |
39 |
| 175/40 |
With signaling, indicating, testing or measuring |
519 |
| 175/42 |
Indicating agent released in drilling fluid |
24 |
| 175/50 |
Indicating, testing or measuring a condition of the formation |
349 |
| 175/48 |
Measuring or indicating drilling fluid (1) pressure, or (2) rate of flow |
218 |
| 175/44 |
Providing identifiable indication of core position in situ for core sample orientation |
22 |
| 175/41 |
Ray energy detection or measuring |
28 |
| 175/46 |
Signaling or indicating condition of cutting in cuttings retainer |
22 |
| 175/45 |
Tool position direction or inclination measuring or indicating within the bore |
504 |
| 175/49 |
Transparent inspection feature |
10 |
| 175/227 |
With storage means for bit lubricant carried by bit or shaft |
54 |
| 175/229 |
Rotation of bit actuates lubricant feed means |
21 |
| 175/228 |
With fluid pressure-actuated feed means |
113 |
| 175/170 |
With tool drive prime mover or above-ground mechanical motion converting drive means |
65 |
| 175/189 |
Drive reciprocates tool |
17 |
| 175/195 |
Rotary drive for a relatively advancing tool (e.g., rotary table) |
94 |
| 175/173 |
With diversely operated shafts extending into bore |
35 |
| 175/172 |
With endless flexible conveyer |
2 |
| 175/171 |
With installing casing |
183 |
| 175/320 |
With tool shaft detail |
371 |
| 175/321 |
Axially telescoping shaft section |
177 |
| 175/322 |
Telescoping motion related to relative axial rotation or oscillation |
40 |
| 175/323 |
Helix or helically arranged structure |
182 |
| 175/324 |
Means other than tool structure to induce fluent flow |
104 |
| 175/325.1 |
Shaft carried guide or protector |
59 |
| 175/325.2 |
Coupled between shaft sections or bit and shaft section |
163 |
| 175/325.4 |
Having removable inserts |
77 |
| 175/325.3 |
With bore wall engaging means rotatable relative to shaft section (e.g., with bearings) |
104 |
| 175/326 |
Engaging means advances in adjacent hole |
8 |
| 175/325.5 |
Surrounding existing shaft section |
88 |
| 175/325.6 |
Held by a fastener parallel to shaft axis |
19 |
| 175/325.7 |
Held by discrete fastening means tangential to shaft axis |
18 |
| 175/314 |
With well-type screen |
28 |
