USPC Patent Classifications

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Class 175 boring or penetrating the earth
uspcdescription
175/1175 boring or penetrating the earth/(1) with seismic shock generating
175/2175 boring or penetrating the earth/(2) boring with explosion in inaccessible hole
175/3175 boring or penetrating the earth/(2) boring with explosion in inaccessible hole (3) severing formed core by explosion
175/3.5175 boring or penetrating the earth/(2) boring with explosion in inaccessible hole (3.5) explosive charge carried by projectile
175/4175 boring or penetrating the earth/(2) boring with explosion in inaccessible hole (4) driving core receiver by explosion or with receptacle collecting material in bore
175/4.5175 boring or penetrating the earth/(2) boring with explosion in inaccessible hole (4.5) directing successive projectiles or charges in same path
175/4.51175 boring or penetrating the earth/(2) boring with explosion in inaccessible hole (4.51) with position orienting or indicating
175/4.52175 boring or penetrating the earth/(2) boring with explosion in inaccessible hole (4.52) with wall engaging packer or anchor
175/4.53175 boring or penetrating the earth/(2) boring with explosion in inaccessible hole (4.53) firing chamber movable in bore relative to carrier or another firing chamber
175/4.54175 boring or penetrating the earth/(2) boring with explosion in inaccessible hole (4.54) with bore condition firing control, or compensating means
175/4.55175 boring or penetrating the earth/(2) boring with explosion in inaccessible hole (4.55) independent firing of plural charges
175/4.56175 boring or penetrating the earth/(2) boring with explosion in inaccessible hole (4.56) firing control mechanically actuated in bore
175/4.57175 boring or penetrating the earth/(2) boring with explosion in inaccessible hole (4.57) projectile forms bore
175/4.58175 boring or penetrating the earth/(2) boring with explosion in inaccessible hole (4.57) projectile forms bore (4.58) with means to initially restrain projectile for pressure build-up
175/4.59175 boring or penetrating the earth/(2) boring with explosion in inaccessible hole (4.57) projectile forms bore (4.59) with means to prevent preliminary bore fluid contact
175/4.6175 boring or penetrating the earth/(2) boring with explosion in inaccessible hole (4.6) concave-shaped charge
175/5175 boring or penetrating the earth/(5) boring a submerged formation
175/6175 boring or penetrating the earth/(5) boring a submerged formation (6) boring with underwater tool drive prime mover
175/7175 boring or penetrating the earth/(5) boring a submerged formation (7) boring from floating support with submerged independent anchored guide base
175/8175 boring or penetrating the earth/(5) boring a submerged formation (8) boring from submerged buoyant support
175/9175 boring or penetrating the earth/(5) boring a submerged formation (9) boring from nonbuoyant support
175/10175 boring or penetrating the earth/(5) boring a submerged formation (10) boring with submersible vertically movable guide
175/11175 boring or penetrating the earth/(11) boring by directly applying heat to fluidize or comminute
175/12175 boring or penetrating the earth/(11) boring by directly applying heat to fluidize or comminute (12) combustion of the formation material
175/13175 boring or penetrating the earth/(11) boring by directly applying heat to fluidize or comminute (13) with introduction of slag forming flux
175/14175 boring or penetrating the earth/(11) boring by directly applying heat to fluidize or comminute (14) combustion is confined chamber having restricted discharge orifice
175/15175 boring or penetrating the earth/(11) boring by directly applying heat to fluidize or comminute (15) rotating the heating tool
175/16175 boring or penetrating the earth/(11) boring by directly applying heat to fluidize or comminute (16) electrically produced heat
175/17175 boring or penetrating the earth/(17) with heating or cooling (1) within the bore, or (2) drilling fluid
175/18175 boring or penetrating the earth/(18) ice boring
175/19175 boring or penetrating the earth/(19) boring without earth removal (i.e., compacting earth formation)
175/20175 boring or penetrating the earth/(19) boring without earth removal (i.e., compacting earth formation) (20) combined with earth removal (e.g., removing sample)
175/21175 boring or penetrating the earth/(19) boring without earth removal (i.e., compacting earth formation) (21) fluid passage to exterior of drive point
175/22175 boring or penetrating the earth/(19) boring without earth removal (i.e., compacting earth formation) (22) drive point detached from shaft to form cased bore or with installation of casing
175/23175 boring or penetrating the earth/(19) boring without earth removal (i.e., compacting earth formation) (22) drive point detached from shaft to form cased bore or with installation of casing (23) drive point retracted through shaft or casing
175/24175 boring or penetrating the earth/(24) automatic control
175/25175 boring or penetrating the earth/(24) automatic control (25) of fluid pressure below ground
175/26175 boring or penetrating the earth/(24) automatic control (26) of boring means including a below-ground drive prime mover
175/27175 boring or penetrating the earth/(24) automatic control (27) of advance or applied tool weight
175/38175 boring or penetrating the earth/(24) automatic control (38) in response to drilling fluid circulation
175/39175 boring or penetrating the earth/(39) with bit wear signal generating
175/40175 boring or penetrating the earth/(40) with signaling, indicating, testing or measuring
175/41175 boring or penetrating the earth/(40) with signaling, indicating, testing or measuring (41) ray energy detection or measuring
175/42175 boring or penetrating the earth/(40) with signaling, indicating, testing or measuring (42) indicating agent released in drilling fluid
175/44175 boring or penetrating the earth/(40) with signaling, indicating, testing or measuring (44) providing identifiable indication of core position in situ for core sample orientation
175/45175 boring or penetrating the earth/(40) with signaling, indicating, testing or measuring (45) tool position direction or inclination measuring or indicating within the bore
175/46175 boring or penetrating the earth/(40) with signaling, indicating, testing or measuring (46) signaling or indicating condition of cutting in cuttings retainer
175/48175 boring or penetrating the earth/(40) with signaling, indicating, testing or measuring (48) measuring or indicating drilling fluid (1) pressure, or (2) rate of flow
175/49175 boring or penetrating the earth/(40) with signaling, indicating, testing or measuring (49) transparent inspection feature
175/50175 boring or penetrating the earth/(40) with signaling, indicating, testing or measuring (50) indicating, testing or measuring a condition of the formation
175/51175 boring or penetrating the earth/(51) with self-acting cyclic advance and retraction of tool or tool shaft
175/52175 boring or penetrating the earth/(52) with magazine for successively moving unconnected, oriented tool or shaft sections to use position
175/53175 boring or penetrating the earth/(53) enlargement of existing pilot throughbore requiring accessibility to existing opposite bore ends to insert and remove tool
175/54175 boring or penetrating the earth/(54) boring by below ground recirculation of unsupported elements (e.g., shot)
175/55175 boring or penetrating the earth/(55) tool actuation by reaction of rotating eccentric mass
175/56175 boring or penetrating the earth/(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
175/57175 boring or penetrating the earth/(57) processes
175/58175 boring or penetrating the earth/(57) processes (58) sampling of earth formations
175/59175 boring or penetrating the earth/(57) processes (58) sampling of earth formations (59) retaining fluid or taking separate fluid sample
175/60175 boring or penetrating the earth/(57) processes (58) sampling of earth formations (60) transporting sample to surface by fluid
175/61175 boring or penetrating the earth/(57) processes (61) boring curved or redirected bores
175/62175 boring or penetrating the earth/(57) processes (62) boring horizontal bores
175/64175 boring or penetrating the earth/(57) processes (64) chemical reaction with earth formation or drilling fluid constituent
175/65175 boring or penetrating the earth/(57) processes (65) boring with specific fluid
175/66175 boring or penetrating the earth/(57) processes (65) boring with specific fluid (66) treating spent or used fluid above ground
175/67175 boring or penetrating the earth/(57) processes (65) boring with specific fluid (67) boring by fluid erosion
175/68175 boring or penetrating the earth/(57) processes (65) boring with specific fluid (68) anti-agglomeration treatment of gaseous drilling fluid
175/69175 boring or penetrating the earth/(57) processes (65) boring with specific fluid (69) combined liquid and gaseous fluid
175/70175 boring or penetrating the earth/(57) processes (65) boring with specific fluid (70) plural distinguishable liquids
175/71175 boring or penetrating the earth/(57) processes (65) boring with specific fluid (71) gaseous fluid or under gas pressure
175/72175 boring or penetrating the earth/(57) processes (65) boring with specific fluid (72) prevention of lost circulation or caving
175/73175 boring or penetrating the earth/(73) means traveling with tool to constrain tool to bore along curved path
175/74175 boring or penetrating the earth/(73) means traveling with tool to constrain tool to bore along curved path (74) sectional guide or shaft having means to lock sections in angular relation while boring
175/75175 boring or penetrating the earth/(73) means traveling with tool to constrain tool to bore along curved path (75) normally curved guide or shaft
175/76175 boring or penetrating the earth/(73) means traveling with tool to constrain tool to bore along curved path (76) axially spaced opposed bore wall engaging guides
175/77175 boring or penetrating the earth/(77) side wall tool fed laterally without rotation from inaccessible hole
175/78175 boring or penetrating the earth/(78) means carried by housing insertable in inaccessible hole to advance side wall tool laterally
175/79175 boring or penetrating the earth/(79) tool shaft advanced relative to guide insertable in inaccessible hole to change direction of advance
175/80175 boring or penetrating the earth/(79) tool shaft advanced relative to guide insertable in inaccessible hole to change direction of advance (80) tool telescopes over guide having surface set at angle in hole
175/81175 boring or penetrating the earth/(79) tool shaft advanced relative to guide insertable in inaccessible hole to change direction of advance (81) with anchor for guide engaging hole side wall
175/82175 boring or penetrating the earth/(79) tool shaft advanced relative to guide insertable in inaccessible hole to change direction of advance (82) guide carried by shaft to operative position
175/83175 boring or penetrating the earth/(79) tool shaft advanced relative to guide insertable in inaccessible hole to change direction of advance (82) guide carried by shaft to operative position (83) with clutch means acting between shaft and guide
175/84175 boring or penetrating the earth/(84) with above-ground cleaner for boring means
175/85175 boring or penetrating the earth/(85) with orienting or racking means for unconnected tools or sections of shaft or casing
175/86175 boring or penetrating the earth/(86) with below-ground personal accommodation
175/87175 boring or penetrating the earth/(87) convertible
175/88175 boring or penetrating the earth/(88) with means carrying cuttings laterally of bore axis comprising (1) chute, (2) conveyer, or (3) vehicle
175/89175 boring or penetrating the earth/(89) tool element or continuously driven flexible or articulated endless member
175/90175 boring or penetrating the earth/(89) tool element or continuously driven flexible or articulated endless member (90) flexible or articulated member carried on support swingable or laterally movable relative to bore axis
175/91175 boring or penetrating the earth/(91) boring means including a continuously rotating bit describing a noncircular cross-sectional bore
175/92175 boring or penetrating the earth/(92) with below-ground tool drive prime mover
175/93175 boring or penetrating the earth/(92) with below-ground tool drive prime mover (93) below-ground (1) generation of motive fluid, or (2) storage of motivating energy
175/94175 boring or penetrating the earth/(92) with below-ground tool drive prime mover (94) with below-ground feed means
175/95175 boring or penetrating the earth/(92) with below-ground tool drive prime mover (95) plural below-ground drive prime movers
175/96175 boring or penetrating the earth/(92) with below-ground tool drive prime mover (95) plural below-ground drive prime movers (96) plural cutter elements driven by individual prime movers
175/97175 boring or penetrating the earth/(92) with below-ground tool drive prime mover (97) with means to anchor prime movers support to bore wall
175/98175 boring or penetrating the earth/(92) with below-ground tool drive prime mover (97) with means to anchor prime movers support to bore wall (98) expansible anchor
175/99175 boring or penetrating the earth/(92) with below-ground tool drive prime mover (97) with means to anchor prime movers support to bore wall (98) expansible anchor (99) fluid-operated
175/100175 boring or penetrating the earth/(92) with below-ground tool drive prime mover (100) discharge passage for motive fluid directed toward bore entrance
175/101175 boring or penetrating the earth/(92) with below-ground tool drive prime mover (101) with positive connection between tool and support shaft for rotary below ground motor
175/102175 boring or penetrating the earth/(92) with below-ground tool drive prime mover (102) with below-ground conveyer or impeller for removal of cuttings
175/103175 boring or penetrating the earth/(92) with below-ground tool drive prime mover (103) with above-ground means
175/104175 boring or penetrating the earth/(92) with below-ground tool drive prime mover (104) electric
175/105175 boring or penetrating the earth/(92) with below-ground tool drive prime mover (104) electric (105) reciprocating
175/106175 boring or penetrating the earth/(92) with below-ground tool drive prime mover (106) with mechanical motion-converting means
175/107175 boring or penetrating the earth/(92) with below-ground tool drive prime mover (107) fluid rotary type
175/108175 boring or penetrating the earth/(108) common drive or advancing means for concurrently boring along laterally spaced axes
175/113175 boring or penetrating the earth/(113) with means to simultaneously feed and rotate tool from a single mechanical element
175/114175 boring or penetrating the earth/(113) with means to simultaneously feed and rotate tool from a single mechanical element (114) constant rotation rate permitted regardless of (1) release of feed force, or (2) change in feed rate
175/118175 boring or penetrating the earth/(113) with means to simultaneously feed and rotate tool from a single mechanical element (118) with feed anchor in earth wall being bored
175/121175 boring or penetrating the earth/(113) with means to simultaneously feed and rotate tool from a single mechanical element (121) rotary drive for relatively advancing feed screw
175/122175 boring or penetrating the earth/(122) with means to feed drive
175/135175 boring or penetrating the earth/(135) with above-ground means to impact an earth-penetrating means
175/161175 boring or penetrating the earth/(161) with above-ground means to move tool to a dumping location offset from bore
175/162175 boring or penetrating the earth/(162) with above-ground means to feed tool
175/170175 boring or penetrating the earth/(170) with tool drive prime mover or above-ground mechanical motion converting drive means
175/171175 boring or penetrating the earth/(170) with tool drive prime mover or above-ground mechanical motion converting drive means (171) with installing casing
175/172175 boring or penetrating the earth/(170) with tool drive prime mover or above-ground mechanical motion converting drive means (172) with endless flexible conveyer
175/173175 boring or penetrating the earth/(170) with tool drive prime mover or above-ground mechanical motion converting drive means (173) with diversely operated shafts extending into bore
175/189175 boring or penetrating the earth/(170) with tool drive prime mover or above-ground mechanical motion converting drive means (189) drive reciprocates tool
175/195175 boring or penetrating the earth/(170) with tool drive prime mover or above-ground mechanical motion converting drive means (195) rotary drive for a relatively advancing tool (e.g., rotary table)
175/202175 boring or penetrating the earth/(202) above-ground means for relatively moving below-ground tool elements
175/203175 boring or penetrating the earth/(203) with above-ground means to advance or retract boring means
175/205175 boring or penetrating the earth/(205) with means providing pressurized gas contact with drilling liquid
175/206175 boring or penetrating the earth/(206) with above-ground means for preparing or separating drilling fluid constituents
175/207175 boring or penetrating the earth/(207) with above-ground means for handling drilling fluid or cutting
175/208175 boring or penetrating the earth/(207) with above-ground means for handling drilling fluid or cutting (208) fluid spray
175/209175 boring or penetrating the earth/(207) with above-ground means for handling drilling fluid or cutting (209) fluid or cuttings directing or receiving means engaging bore entrance
175/210175 boring or penetrating the earth/(207) with above-ground means for handling drilling fluid or cutting (209) fluid or cuttings directing or receiving means engaging bore entrance (210) anchored to bore wall
175/211175 boring or penetrating the earth/(207) with above-ground means for handling drilling fluid or cutting (209) fluid or cuttings directing or receiving means engaging bore entrance (211) axially supported by tool shaft
175/212175 boring or penetrating the earth/(207) with above-ground means for handling drilling fluid or cutting (212) pressurized gas supply
175/213175 boring or penetrating the earth/(207) with above-ground means for handling drilling fluid or cutting (213) with suction pump inlet communicating with bore bottom
175/214175 boring or penetrating the earth/(207) with above-ground means for handling drilling fluid or cutting (214) fluid head on tool shaft having lateral port and axial passage with seal for means reciprocable in the head
175/215175 boring or penetrating the earth/(207) with above-ground means for handling drilling fluid or cutting (215) with tool shaft having plural passages for drilling fluid
175/216175 boring or penetrating the earth/(207) with above-ground means for handling drilling fluid or cutting (216) standpipe
175/217175 boring or penetrating the earth/(207) with above-ground means for handling drilling fluid or cutting (217) with pump
175/218175 boring or penetrating the earth/(207) with above-ground means for handling drilling fluid or cutting (218) with valve
175/219175 boring or penetrating the earth/(219) with particular accommodation for personnel (e.g., seat or protector)
175/220175 boring or penetrating the earth/(220) with above-ground guide for relatively advancing tool
175/226175 boring or penetrating the earth/(226) with sample covering or coating means (1) dispensed into sample receiver, or (2) fluent
175/227175 boring or penetrating the earth/(227) with storage means for bit lubricant carried by bit or shaft
175/228175 boring or penetrating the earth/(227) with storage means for bit lubricant carried by bit or shaft (228) with fluid pressure-actuated feed means
175/229175 boring or penetrating the earth/(227) with storage means for bit lubricant carried by bit or shaft (229) rotation of bit actuates lubricant feed means
175/230175 boring or penetrating the earth/(230) with expansible bore wall anchor (e.g., packer)
175/231175 boring or penetrating the earth/(231) with means movable relative to tool below ground to control eccentric fluid emission
175/232175 boring or penetrating the earth/(232) with means movable relative to tool below ground to stop flow toward bore bottom
175/233175 boring or penetrating the earth/(232) with means movable relative to tool below ground to stop flow toward bore bottom (233) movable to seal sample receiver at bore bottom pressure
175/234175 boring or penetrating the earth/(232) with means movable relative to tool below ground to stop flow toward bore bottom (234) with longitudinally spaced valve seats
175/235175 boring or penetrating the earth/(232) with means movable relative to tool below ground to stop flow toward bore bottom (234) with longitudinally spaced valve seats (235) seat engaged to stop upward flow
175/236175 boring or penetrating the earth/(232) with means movable relative to tool below ground to stop flow toward bore bottom (236) in sample receiver removable through below-ground tool shaft
175/237175 boring or penetrating the earth/(232) with means movable relative to tool below ground to stop flow toward bore bottom (237) means comprises dropped element
175/238175 boring or penetrating the earth/(232) with means movable relative to tool below ground to stop flow toward bore bottom (238) flow-stopping means includes relatively movable cutter element
175/239175 boring or penetrating the earth/(232) with means movable relative to tool below ground to stop flow toward bore bottom (239) with undisturbed core receiver
175/240175 boring or penetrating the earth/(232) with means movable relative to tool below ground to stop flow toward bore bottom (239) with undisturbed core receiver (240) movable means adapted to underlie severed core
175/241175 boring or penetrating the earth/(232) with means movable relative to tool below ground to stop flow toward bore bottom (241) stops flow by movement about fixed pivot
175/242175 boring or penetrating the earth/(232) with means movable relative to tool below ground to stop flow toward bore bottom (241) stops flow by movement about fixed pivot (242) pivot transverse to tool axis
175/243175 boring or penetrating the earth/(232) with means movable relative to tool below ground to stop flow toward bore bottom (243) resiliently biased or composed of flexible material
175/244175 boring or penetrating the earth/(244) with means movable relative to tool to receive, retain, or sever undisturbed core
175/245175 boring or penetrating the earth/(244) with means movable relative to tool to receive, retain, or sever undisturbed core (245) core bit closure relative upwardly movable by core
175/246175 boring or penetrating the earth/(244) with means movable relative to tool to receive, retain, or sever undisturbed core (246) receiver removable through below-ground tool shaft
175/247175 boring or penetrating the earth/(244) with means movable relative to tool to receive, retain, or sever undisturbed core (246) receiver removable through below-ground tool shaft (247) with fluid pressure-responsive means to remove receiver or operate latch
175/248175 boring or penetrating the earth/(244) with means movable relative to tool to receive, retain, or sever undisturbed core (246) receiver removable through below-ground tool shaft (248) core forming cutting edge or element on receiver
175/249175 boring or penetrating the earth/(244) with means movable relative to tool to receive, retain, or sever undisturbed core (249) core-retaining or severing means
175/250175 boring or penetrating the earth/(244) with means movable relative to tool to receive, retain, or sever undisturbed core (249) core-retaining or severing means (250) fluid-actuated
175/251175 boring or penetrating the earth/(244) with means movable relative to tool to receive, retain, or sever undisturbed core (249) core-retaining or severing means (251) actuated upon relative movement between tool and tool shaft
175/252175 boring or penetrating the earth/(244) with means movable relative to tool to receive, retain, or sever undisturbed core (249) core-retaining or severing means (251) actuated upon relative movement between tool and tool shaft (252) relative rotary movement
175/253175 boring or penetrating the earth/(244) with means movable relative to tool to receive, retain, or sever undisturbed core (249) core-retaining or severing means (253) with element holding retaining or severing means inactive
175/254175 boring or penetrating the earth/(244) with means movable relative to tool to receive, retain, or sever undisturbed core (249) core-retaining or severing means (254) mounted on transverse pivot
175/255175 boring or penetrating the earth/(244) with means movable relative to tool to receive, retain, or sever undisturbed core (249) core-retaining or severing means (255) sliding wedge type (e.g., slips)
175/256175 boring or penetrating the earth/(256) with releasable means normally holding jointed shaft sections in angular relation
175/257175 boring or penetrating the earth/(257) tool removable or insertable through or around driving or driven shaft or casing
175/258175 boring or penetrating the earth/(257) tool removable or insertable through or around driving or driven shaft or casing (258) laterally shiftable cutter element movable through shaft
175/259175 boring or penetrating the earth/(257) tool removable or insertable through or around driving or driven shaft or casing (258) laterally shiftable cutter element movable through shaft (259) plural cutter elements longitudinally relatively movable into transverse alignment
175/260175 boring or penetrating the earth/(257) tool removable or insertable through or around driving or driven shaft or casing (258) laterally shiftable cutter element movable through shaft (260) cutter element engages torque transmitting abutment on shaft when expanded
175/261175 boring or penetrating the earth/(257) tool removable or insertable through or around driving or driven shaft or casing (258) laterally shiftable cutter element movable through shaft (260) cutter element engages torque transmitting abutment on shaft when expanded (261) with additional torque transmitting abutment on bit head and shaft
175/262175 boring or penetrating the earth/(257) tool removable or insertable through or around driving or driven shaft or casing (262) tool movable exteriorly of shaft
175/263175 boring or penetrating the earth/(263) cutter element laterally shiftable below ground (e.g., expansible)
175/264175 boring or penetrating the earth/(263) cutter element laterally shiftable below ground (e.g., expansible) (264) with separable means holding tool collapsed above ground only
175/265175 boring or penetrating the earth/(263) cutter element laterally shiftable below ground (e.g., expansible) (265) plural cutter elements longitudinally relative movable into transverse alignment
175/266175 boring or penetrating the earth/(263) cutter element laterally shiftable below ground (e.g., expansible) (266) plural selectively shiftable cutter elements
175/271175 boring or penetrating the earth/(263) cutter element laterally shiftable below ground (e.g., expansible) (271) with latch operated by fluid pressure or dropped element
175/267175 boring or penetrating the earth/(263) cutter element laterally shiftable below ground (e.g., expansible) (267) cutter element shifted by fluid pressure
175/268175 boring or penetrating the earth/(263) cutter element laterally shiftable below ground (e.g., expansible) (267) cutter element shifted by fluid pressure (268) with dropped element
175/269175 boring or penetrating the earth/(263) cutter element laterally shiftable below ground (e.g., expansible) (267) cutter element shifted by fluid pressure (269) fluid pressure acts against spring biased part
175/270175 boring or penetrating the earth/(263) cutter element laterally shiftable below ground (e.g., expansible) (270) cutter element shifted by dropped element
175/272175 boring or penetrating the earth/(263) cutter element laterally shiftable below ground (e.g., expansible) (272) cutter element shifted by relatively longitudinally movable threaded elements
175/273175 boring or penetrating the earth/(263) cutter element laterally shiftable below ground (e.g., expansible) (273) cutter element shifted by cam or gear axially rotatable relative to shaft
175/274175 boring or penetrating the earth/(263) cutter element laterally shiftable below ground (e.g., expansible) (274) with shifting mechanism spring biased to operative position
175/275175 boring or penetrating the earth/(263) cutter element laterally shiftable below ground (e.g., expansible) (274) with shifting mechanism spring biased to operative position (275) with separate latch
175/276175 boring or penetrating the earth/(263) cutter element laterally shiftable below ground (e.g., expansible) (274) with shifting mechanism spring biased to operative position (275) with separate latch (276) frangible or discardable element
175/277175 boring or penetrating the earth/(263) cutter element laterally shiftable below ground (e.g., expansible) (274) with shifting mechanism spring biased to operative position (275) with separate latch (277) latch holds mechanism retracted
175/278175 boring or penetrating the earth/(263) cutter element laterally shiftable below ground (e.g., expansible) (274) with shifting mechanism spring biased to operative position (275) with separate latch (277) latch holds mechanism retracted (278) latch return shifting mechanism to inoperative position
175/279175 boring or penetrating the earth/(263) cutter element laterally shiftable below ground (e.g., expansible) (274) with shifting mechanism spring biased to operative position (279) cam or gear means movable to shift cutter element
175/280175 boring or penetrating the earth/(263) cutter element laterally shiftable below ground (e.g., expansible) (274) with shifting mechanism spring biased to operative position (279) cam or gear means movable to shift cutter element (280) with forwardly extending noncutting portion
175/281175 boring or penetrating the earth/(263) cutter element laterally shiftable below ground (e.g., expansible) (274) with shifting mechanism spring biased to operative position (281) cutter element substantially longitudinally movable on shaft
175/282175 boring or penetrating the earth/(263) cutter element laterally shiftable below ground (e.g., expansible) (274) with shifting mechanism spring biased to operative position (281) cutter element substantially longitudinally movable on shaft (282) plural elements expanded into single socket
175/283175 boring or penetrating the earth/(263) cutter element laterally shiftable below ground (e.g., expansible) (274) with shifting mechanism spring biased to operative position (281) cutter element substantially longitudinally movable on shaft (283) with forwardly extending noncutting portion
175/284175 boring or penetrating the earth/(263) cutter element laterally shiftable below ground (e.g., expansible) (284) cutter element shifted by longitudinally relatively movable parts
175/285175 boring or penetrating the earth/(263) cutter element laterally shiftable below ground (e.g., expansible) (284) cutter element shifted by longitudinally relatively movable parts (285) toggle or linkage between movable parts
175/286175 boring or penetrating the earth/(263) cutter element laterally shiftable below ground (e.g., expansible) (284) cutter element shifted by longitudinally relatively movable parts (286) cam or gear engaging cutter element
175/287175 boring or penetrating the earth/(263) cutter element laterally shiftable below ground (e.g., expansible) (284) cutter element shifted by longitudinally relatively movable parts (286) cam or gear engaging cutter element (287) with separate latch holding cutter element in shifted position
175/288175 boring or penetrating the earth/(263) cutter element laterally shiftable below ground (e.g., expansible) (284) cutter element shifted by longitudinally relatively movable parts (286) cam or gear engaging cutter element (288) cutter element substantially longitudinally movable on shaft
175/289175 boring or penetrating the earth/(263) cutter element laterally shiftable below ground (e.g., expansible) (284) cutter element shifted by longitudinally relatively movable parts (286) cam or gear engaging cutter element (289) cutter element spring biased to retracted position
175/290175 boring or penetrating the earth/(263) cutter element laterally shiftable below ground (e.g., expansible) (290) with latch
175/291175 boring or penetrating the earth/(263) cutter element laterally shiftable below ground (e.g., expansible) (291) spring biased
175/292175 boring or penetrating the earth/(263) cutter element laterally shiftable below ground (e.g., expansible) (292) pivoted about substantially longitudinal axis
175/293175 boring or penetrating the earth/(293) below-ground (1) hammer, or (2) impact members
175/294175 boring or penetrating the earth/(293) below-ground (1) hammer, or (2) impact members (294) combined with safety joint
175/295175 boring or penetrating the earth/(293) below-ground (1) hammer, or (2) impact members (295) with noncutting portion forwardly of sleeve impact member having a cutting portion (e.g., reamer)
175/296175 boring or penetrating the earth/(293) below-ground (1) hammer, or (2) impact members (296) fluid-operated
175/297175 boring or penetrating the earth/(293) below-ground (1) hammer, or (2) impact members (296) fluid-operated (297) restricted orifice for initially delaying escape of restraining fluid
175/298175 boring or penetrating the earth/(293) below-ground (1) hammer, or (2) impact members (298) continuous unidirectional rotary motion of one telescoping member effects consecutive impacts
175/299175 boring or penetrating the earth/(293) below-ground (1) hammer, or (2) impact members (299) resiliently biased
175/300175 boring or penetrating the earth/(293) below-ground (1) hammer, or (2) impact members (300) with releasable means to detachably retain telescoping members against axial reciprocation
175/301175 boring or penetrating the earth/(293) below-ground (1) hammer, or (2) impact members (300) with releasable means to detachably retain telescoping members against axial reciprocation (301) frangible
175/302175 boring or penetrating the earth/(293) below-ground (1) hammer, or (2) impact members (300) with releasable means to detachably retain telescoping members against axial reciprocation (302) condition for release adjustable
175/303175 boring or penetrating the earth/(293) below-ground (1) hammer, or (2) impact members (300) with releasable means to detachably retain telescoping members against axial reciprocation (302) condition for release adjustable (303) adjustable below ground
175/304175 boring or penetrating the earth/(293) below-ground (1) hammer, or (2) impact members (300) with releasable means to detachably retain telescoping members against axial reciprocation (304) resiliently biased latch
175/305175 boring or penetrating the earth/(293) below-ground (1) hammer, or (2) impact members (305) telescoping members relatively rotatable
175/306175 boring or penetrating the earth/(293) below-ground (1) hammer, or (2) impact members (305) telescoping members relatively rotatable (306) with means to couple members to prevent relative rotation
175/307175 boring or penetrating the earth/(307) with cutting edge cover
175/308175 boring or penetrating the earth/(308) with receptacle
175/309175 boring or penetrating the earth/(308) with receptacle (309) removable or insertable through below-ground tool shaft
175/310175 boring or penetrating the earth/(308) with receptacle (310) with helical conveyer
175/311175 boring or penetrating the earth/(308) with receptacle (311) suspended below bit
175/312175 boring or penetrating the earth/(308) with receptacle (312) sieve or strainer
175/313175 boring or penetrating the earth/(313) with mechanical cleaner for bit or cutter element
175/314175 boring or penetrating the earth/(314) with well-type screen
175/315175 boring or penetrating the earth/(315) combined
175/316175 boring or penetrating the earth/(316) with relatively movable parts to facilitate cleaning without disassembly
175/317175 boring or penetrating the earth/(317) with means movable relative to tool or shaft to control below-ground passage
175/318175 boring or penetrating the earth/(317) with means movable relative to tool or shaft to control below-ground passage (318) valve prevents upward flow
175/319175 boring or penetrating the earth/(319) below-ground mechanical motion converting means relatively moving plural cutting edges
175/320175 boring or penetrating the earth/(320) with tool shaft detail
175/321175 boring or penetrating the earth/(320) with tool shaft detail (321) axially telescoping shaft section
175/322175 boring or penetrating the earth/(320) with tool shaft detail (321) axially telescoping shaft section (322) telescoping motion related to relative axial rotation or oscillation
175/323175 boring or penetrating the earth/(320) with tool shaft detail (323) helix or helically arranged structure
175/324175 boring or penetrating the earth/(320) with tool shaft detail (324) means other than tool structure to induce fluent flow
175/325.1175 boring or penetrating the earth/(320) with tool shaft detail (325.1) shaft carried guide or protector
175/325.2175 boring or penetrating the earth/(320) with tool shaft detail (325.1) shaft carried guide or protector (325.2) coupled between shaft sections or bit and shaft section
175/325.3175 boring or penetrating the earth/(320) with tool shaft detail (325.1) shaft carried guide or protector (325.2) coupled between shaft sections or bit and shaft section (325.3) with bore wall engaging means rotatable relative to shaft section (e.g., with bearings)
175/325.4175 boring or penetrating the earth/(320) with tool shaft detail (325.1) shaft carried guide or protector (325.2) coupled between shaft sections or bit and shaft section (325.4) having removable inserts
175/325.5175 boring or penetrating the earth/(320) with tool shaft detail (325.1) shaft carried guide or protector (325.5) surrounding existing shaft section
175/325.6175 boring or penetrating the earth/(320) with tool shaft detail (325.1) shaft carried guide or protector (325.5) surrounding existing shaft section (325.6) held by a fastener parallel to shaft axis
175/325.7175 boring or penetrating the earth/(320) with tool shaft detail (325.1) shaft carried guide or protector (325.5) surrounding existing shaft section (325.7) held by discrete fastening means tangential to shaft axis
175/326175 boring or penetrating the earth/(320) with tool shaft detail (325.1) shaft carried guide or protector (326) engaging means advances in adjacent hole
175/327175 boring or penetrating the earth/(327) bit or bit element
175/331175 boring or penetrating the earth/(327) bit or bit element (331) rolling cutter bit or rolling cutter bit element
175/332175 boring or penetrating the earth/(327) bit or bit element (331) rolling cutter bit or rolling cutter bit element (332) core forming-type bit
175/333175 boring or penetrating the earth/(327) bit or bit element (331) rolling cutter bit or rolling cutter bit element (332) core forming-type bit (333) with core-breaking means
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