Class 175/344 - Noncutting portion forwardly of rolling cutter (e.g., reamer)

Subclass of Class 175 - Boring or penetrating the earth
Definition: Apparatus in which the rolling cutter element is carried
No. of patents: 39
Last issue date: 06/24/2008

Number	Title	Issue Date
7389829	Method and apparatus for forming bored hole A method and apparatus for creating a reamed hole below the surface are disclosed. The reaming apparatus is arranged to be connected to one or more boring stems and has an interior section and an exterior section. The interior section is rotatable independently of t...	06/24/2008
7325630	Hole opener The invention relates to well reamer for borehole reaming within a specified interval. The well reamer has a housing with inclined slots, radial holes and a central straight-through channel, in which a spring-loaded rod with holes in the upper and lower parts is loc...	02/05/2008
7137460	Back reaming tool A back reaming tool is disclosed which includes a tool body adapted to be coupled to a drill string, and at least cutting structure mounted to a leg and having cutting elements disposed thereon. The leg is removably coupled to the tool body. ...	11/21/2006
7048078	Expandable underreamer/stabilizer A downhole tool that functions as an underreamer or as a stabilizer in an underreamed borehole. The tool includes one or more moveable arms disposed within a body having a flowbore therethrough in fluid communication with the wellbore annulus. The tool alternates be...	05/23/2006
6948779	Cutting roller for a continuously operating surface miner A mining member designed as a cutting roller for a continuously operating surface miner for mining mineral raw materials of high strength. The roller body is equipped for this purpose with mini-disk bits of identical design. Since different conditions occur over the...	09/27/2005
6568488	Roller pipe burster A pipe bursting system of the invention operates by compaction rather than by reaming. The system includes a conventional directional boring machine, a drill string, and a pipe burster attached to the terminal end of the drill string. A pipe burster accor...	05/27/2003
6527066	Hole opener with multisized, replaceable arms and cutters A hole opener (10) having a tubular body (11) with threaded ends (12, 14) for connection in a drill string. The hole opener provides slots or grooves (21, 21') along its longitudinal axis (16) into which are inserted cutter arm support members (30, 30', 6...	03/04/2003
5992542	Cantilevered hole opener A hole opener for enlarging the diameter of bore holes, having a plurality of cantilevered spindles (6) for supporting rotatably attached cutter shells (9) having hardened surfaces for cutting and crushing to widen the bore hole. The cutter shells are sup...	11/30/1999
5372209	Polycentric reamer A polycentric reamer having a body thrust unit and reaming unit is especially useful for locally reaming a borehole beneath a casing string. By asymmetrically positioning a reaming unit within a body formed from non-coaxial mated cylinders, superior resul...	12/13/1994
5366029	Large shaft over-reamer apparatus and method A large shaft over-reamer apparatus and method using a driver means and a detachable reamer cutter means. The driver means may include a work platform for personnel to work on. The driver means is positioned in a drilled pilot hole for stability and verti...	11/22/1994
5337843	Hole opener for the top hole section of oil/gas wells A hole opener used in conjunction with drilling in at least one of boulder and rubble stone formations includes first and second sets of cutters. Each of the cutters of the first and second sets of cutters has cutter teeth thereon and further include a sh...	08/16/1994
4627501	Borer head with planetary gearing In a borer head for drilling boreholes in rock structures and including a drive shaft connected to a drive of a drilling machine, a central shaft coupled to the drive shaft, and a tool holder with cutters driven by a planetary gearing connected to the cen...	12/09/1986
4449595	Method and apparatus for drilling a curved bore A reamer apparatus is adapted for use in combination with a radial whipstock assembly in drilling a curved bore in a subsurface formation at a predetermined angle of build. The reamer apparatus is comprised of a drill bit, at least one articulated joint o...	05/22/1984
4386670	Boring head with extension elements A boring head for reaming a pre-drilled hole in raise boring or for similar earth cutting operations comprising a plurality of roller cutters (13-22). For purposes of extending the radius of the boring head (10) in operation or decreasing its dimensions d...	06/07/1983
4381038	Raise bit with cutters stepped in a spiral and flywheel A bit connectible from the lower end of a rotatably powered drill stem for enlarging a preformed pilot hole includes a cutter carrier frame on which are mounted a plurality of roller cutters having peripheral cutting edges which sweep concentric circles u...	04/26/1983
4359114	Raise drill bit inboard cutter assembly A raise bit (10) is constructed with a plurality of housings (30) secured to cutter carrier frame (14) and disposed about drive stem (12). Housings (30) include a rectangularly-shaped mounting box (48) for rotatably supporting an outboard roller cutter (2...	11/16/1982
4316515	Shaft drill bit with improved cutter bearing and seal arrangement and cutter insert arrangement An earth boring drill bit, particularly for large diameter shafts, has a cutter assembly with improved bearing and seal arrangement and an improved cutting insert arrangement. A cutter assembly has an axle with an enlarged central portion and reduced port...	02/23/1982
4301876	Non-rotating stabilizer for raise boring A non-rotating stabilizer for raise boring having a diameter substantially equal to the raise head and which is positioned below the raise head so as to follow it as the hole is bored is disclosed. A second raise head having a larger diameter than the sta...	11/24/1981
4274496	Method and device in earth cutting A bore head for reaming a pre-drilled hole in raise boring or for similar earth cutting operations comprising at least two sets of roller cutters. The roller cutters in the same set of cutters have the same number of rows of cutting means. The roller cutt...	06/23/1981
4258805	Low cutter load raise head A raise head having a multiplicity of cutters for enlarging a pilot hole into a larger diameter hole by disintegrating the earth formations that surround the pilot hole is provided that will require lower cutter loads to penetrate the formations being bor...	03/31/1981
4248314	Shaft drill bit with overlapping cutter arrangement An earth boring drill bit for large diameter shafts has an improved cutter arrangement. The drill bit has a cutter support member with a number of cutters mounted to it for disintegrating the earth formation face. At least one inner cutter is mounted near...	02/03/1981
4244433	Safety mechanism for a raise drill A raise bit is disclosed for enlarging a pilot hole into a larger diameter hole by disintegrating the earth formations surrounding the pilot hole. The raise bit includes a removable drive stem for enabling the raise bit to be transported through small dri...	01/13/1981
4228863	Reamer bit for raise boring A reamer bit for raise boring in rock, of the type comprising a body on which a number of rolling cutters with cutting inserts are rotatably mounted for contact with and disintegration of the rock, and a detachable stem mounted in a central bore on the bo...	10/21/1980
4202417	Raise drill with elastomeric load absorbing means A raise bit is disclosed for enlarging a pilot hole into a larger diameter hole by disintegrating the earth formations surrounding the pilot hole. The raise bit includes a removable drive stem for enabling the raise bit to be transported through small dri...	05/13/1980
4195701	Raise drill having water passages directed toward the roller cutters A raise bit is disclosed for enlarging a pilot hole into a large diameter hole by disintegrating the earth formations surrounding the pilot hole. The raise bit includes a removable drive stem for enabling the raise bit to be transported through small drif...	04/01/1980
4194578	Raise boring head with retractable gage cutters A raise boring system is provided that allows the raise boring head to be easily and efficiently lowered back through the completed raise hole. The raise head includes a multiplicity of rolling cutters positioned in saddles that are firmly affixed to the ...	03/25/1980
4182422	Large diameter bit with bridge mounted drive stem A drill bit is shown for enlarging a pilot hole into a larger diameter hole by disintegrating the earth formations that surround the pilot hole. The bit includes a cutterhead with a multiplicity of saddles containing rolling cutters for contacting and dis...	01/08/1980
4179000	Self-cleaning raise boring head system The body of a raise boring head is produced from a truncated cone. A variety of efficient and economical methods such as spin-forming, casting, rolling, etc. may be used in producing the truncated cone body. A multiplicity of rolling cutters positioned in...	12/18/1979
4177866	System for boring raises having portions of different diameters A raise boring system is provided for boring raise holes wherein the finished raise holes have portions of different diameters. The system includes a raise head with a central drive stem defining an axis of rotation. Primary cutter means are positioned on...	12/11/1979
4142593	Raise drill inner yoke bridge A raise drill is disclosed for enlarging a pilot hole into a large diameter hole by disintegrating the earth formations surrounding the pilot hole. The raise drill includes a bit body having a plurality of roller cutters mounted thereon. The bit body is d...	03/06/1979
4142598	Two stage large diameter drill bit A large diameter drill bit is disclosed that is capable of drilling various size bores. In the preferred embodiment, the drill functions as a raise bit for enlarging a pilot hole into a larger diameter hole by disintegrating the earth formations surroundi...	03/06/1979
4141421	Under reamer The present invention consists of an under reamer tool for enlarging, scraping or smoothing a well bore. The tool is attached to a conventional drill string above a conventional bit and involves cutting elements that have retractable cutters arranged for ...	02/27/1979
4108259	Raise drill with removable stem A raise drill for enlarging a pilot hole into a larger diameter hole by disintegrating the earth formations surrounding the pilot hole is disclosed. The raise drill includes a main bit body having a plurality of cutters mounted thereon. The bit body is de...	08/22/1978
4102416	Stabilized conical boring tool A self-advancing conical boring tool with a tapered frame for supporting roller cutters, each of which has a frusto-conical body with a plurality of teeth randomly disposed about its periphery. Each roller cutter is constrained within a pair of thrust bea...	07/25/1978
4060141	Self-propelled deep well turbine drill A deep well drill is disclosed which utilizes as a prime mover a multistage hydraulic turbine. The system is self-propelled by means of a cylindrical clam shell assembly. The shell sections are spread apart and locked against the surrounding wall of the d...	11/29/1977
4042047	Raise boring head having fluid traversing means The raise boring head comprises a stem in which is formed a passageway which extends fully throughout the axial length thereof for conducting fluid therethrough. The uppermost end of the passageway defines an inlet and, at the lowermost end, the same comp...	08/16/1977
4036313	Mounting for inboard cutters on a raise drill A raise drill having a central drive stem to which a surrounding cutter mounting frame is attached, the cutter mounting frame supporting a plurality of rotary cutter units. One or more inboard cutter units each include a shaft and a rotary cutter journale...	07/19/1977
4031974	Boring apparatus capable of boring straight holes A rock boring assembly for producing a straight hole for use in a drill string above a pilot boring bit of predetermined diameter smaller than the desired final hole size. The boring assembly comprises a small conical boring bit and a larger conical borin...	06/28/1977
3993147	Taper lock removable stem for raise bit A raise bit for enlarging a pilot hole into a larger diameter hole by disintegrating the earth formations that surround the pilot hole is provided with a removable drive stem. The removable drive stem allows the raise bit to be transported through small p...	11/23/1976

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Class 175/344 - Noncutting portion forwardly of rolling cutter (e.g., reamer)