With Core-breaking Means Patents (Class 175/404)
  • Patent number: 4538691
    Abstract: A rotary drill bit includes a cutting face having a peripheral edge and a central recess. A plurality of fluid discharge nozzles are mounted in the cutting face. A plurality of cutter elements are mounted in the peripheral edge and in the recess to fracture an earthen core formed as the drill cuts through a formation. A plurality of lateral discharge passages extend radially through the bit body from said recess and extend longitudinally to the peripheral edge to form circumferential interruptions in the peripheral edge. A convex protrusion is disposed centrally at a longitudinally inner end of the recess and includes a convex deflecting surface arranged to contact and fracture the earthen core and deflect the cuttings to the lateral discharge passages.
    Type: Grant
    Filed: January 30, 1984
    Date of Patent: September 3, 1985
    Assignee: Strata Bit Corporation
    Inventor: Mahlon D. Dennis
  • Patent number: 4535853
    Abstract: The invention relates to the geometry of drill bits for jet assisted rotary drilling. According to the invention there is used a drill bit comprising platelets of small radial dimension disposed about a central burster in a discontinuous peripheral crown axially extending said drill bit, channels for supplying pressurized fluid opening from the crown close to the platelets. Said platelets are preferably separated from one another by rectilinear discharge ramps. A drill bit in accordance with this invention can be manufactured e.g. by turning or milling. It can be applied for drilling rock formations in mines, and other hard materials.
    Type: Grant
    Filed: December 23, 1983
    Date of Patent: August 20, 1985
    Assignees: Charbonnages de France, Cocentall - Ateliers de Carspach
    Inventors: Serge Ippolito, Georges A. Cagnioncle
  • Patent number: 4534231
    Abstract: A process and device for extracting soil samples, wherein a core sample is extracted from the ground which is to be analyzed and part of the soil is removed from the core for subsequent analysis or other after-treatment. The core sample is removed from the ground and enclosed in an encasing (32, 34) in which the core sample remains in the form and position it had in the ground prior to extraction. The required volumes of soil samples are removed via openings (46) in the encasing (32, 34) at pre-determined points, and collected for further treatment.
    Type: Grant
    Filed: June 21, 1983
    Date of Patent: August 13, 1985
    Inventors: Mats Jonsson, Per-Olof Eden
  • Patent number: 4445580
    Abstract: Rock drill bit having shaving cutters on the leading end of a removable bit head for shaving the hole bottom and shaving reamer cutters extending lengthwise of the bit. The cutters and receiving slots therefor have dovetail configurations for trapping the cutters in the slots. Wedges for locating the cutters are disposed in the bottoms of the slots. Lateral passages communicate with a central mud passage to deliver mud fluid to ports between the cutters. The central mud passage has a venturi configuration and lengthwise extending passages in the bit extend downwardly from upstream of the venturi to intersect or communicate with the lateral passages. A core shaver is mounted by a collet chuck in the central passage close to its outlet to the leading end of the bit to shave a core formed on the hole bottom between the inner ends of the shaving cutters on the end face.
    Type: Grant
    Filed: June 30, 1982
    Date of Patent: May 1, 1984
    Assignee: Syndrill Carbide Diamond Company
    Inventor: Lloyd W. Sahley
  • Patent number: 4352400
    Abstract: A drill bit (10) comprises a cast body (12) with full length wide overlapping integral spiral stabilizer lands (14) between intervening spiral grooves (16), integral short, strong, stubby spiral fingers (18) reinforced by additional web portions (12a) angularly spaced about a short core receiving bore (b) and the longitudinal axis of the body (21).An inclined core ejection passage (P) extends radially outwardly from a spherical inlet end thereof connected to the core receiving bore (b) and at which an inclined hard core cutter breaker inserted within a pocket is situated. The leading sides of the fingers have support surfaces (18a) and shoulders (18b) for supporting engagement with composite abrasive compact cutters comprised of a carbide backing (30a) bonded to the support surfaces (18a) and layers of bonded polycrystalline abrasive particles at opposite cutting sides (30b) inclined at a negative rake angle.
    Type: Grant
    Filed: December 1, 1980
    Date of Patent: October 5, 1982
    Assignee: Christensen, Inc.
    Inventors: Richard H. Grappendorf, Gordon G. Sirrine, John S. Davis
  • Patent number: 4324300
    Abstract: A drill bit including a support member and a plurality of concentrically positioned, hollow, cylindrical cutting members connected to the support member is disclosed. Each of the cutting members includes a beveled edge obliquely extending between the inner and outer surfaces thereof. The beveled edges are aligned so that a tapered cutting surface is defined.
    Type: Grant
    Filed: June 30, 1980
    Date of Patent: April 13, 1982
    Inventor: Clifford K. Logan, Jr.
  • Patent number: 4280573
    Abstract: A rock-breaking tool for preferable use in self-propelled percussive machines for boring wells, comprising a casing with a pointed portion and an end face. The casing has an annular cutting edge formed by the pointed portion and inner tapered surface thereof. The casing is formed with a cone-shaped chamber open at the end face thereof, oriented toward the bottom of a well being drilled, the internal surface of the chamber intersecting with the conical surface of the annular cutting edge. The casing is also provided with ducts communicating the chamber with the surrounding space.
    Type: Grant
    Filed: June 13, 1979
    Date of Patent: July 28, 1981
    Inventors: Boris V. Sudnishnikov, Veniamin V. Kamensky, Eduard P. Varnello, Sergei K. Tupitsyn, Konstantin K. Tupitsyn
  • Patent number: 4258808
    Abstract: A rock drill, particularly for reinforced concrete, for rotary blow drilling, having one or several helical removal grooves for the removal of drill dust and a drill head furnished with a hard metal cutting ring is disclosed. In a preferred embodiment, the drill shaft is provided with a removal channel communicating the cutting ring head and a removal groove in the drill shaft surface.
    Type: Grant
    Filed: March 1, 1979
    Date of Patent: March 31, 1981
    Assignee: Hawera Probst GmbH & Co.
    Inventors: Wolfgang Peetz, Siegfried Klaissle
  • Patent number: 4244626
    Abstract: A rotary cutter for gouging out ore from mine faces has an annular front section with a set of bits which cut a ring-shaped groove into the mine face when the cutter is rotated and moved forwardly toward and into the mine face, and a rear section which is surrounded by the annular section and carries a second set of bits which comminute the core within the ring-shaped groove. The rear section has a conical bottom wall for the respective bits and a cylindrical wall surrounding and extending forwardly of the conical wall. The cylindrical wall has outlets for evacuation of comminuted material of the core. Such comminuted material is discharged into spaces between the cylindrical wall and sickle-shaped arcuate supports which carry additional bits and slope rearwardly and outwardly, as considered in the direction of rotation and forward movement of the cutter.
    Type: Grant
    Filed: October 12, 1978
    Date of Patent: January 13, 1981
    Assignees: Gesteins- und Tiefbau GmbH, H. Krummenauer KG
    Inventors: Klaus Konieczny, Erich Schmitt, Adolf Buhles
  • Patent number: 4234048
    Abstract: A diamond drill bit for drilling bore holes in earth formations having a body connectible to a drilling string, and provided with a matrix portion of hard metals in which diamonds are surface set at the outer gage portion and adjacent to the bit axis, the hard metal matrix having preformed grooves in which preformed diamond impregnated segments are inserted, which are a mixture of diamonds and hard metals, and secured to the matrix portion by brazing material. During bit rotation in the bore hole, the segments cut the major portion of the hole, the diamonds being dispersed throughout the mass of each segment for selective release from the segment as the diamonds become damaged and lost, thereby exposing new diamonds in the segment at a controlled rate, and thereby producing continual resharpening of the segments. As a result, the drilling rate of the bit is increased, as well as the length of hole drilled.
    Type: Grant
    Filed: June 12, 1978
    Date of Patent: November 18, 1980
    Assignee: Christensen, Inc.
    Inventor: David S. Rowley
  • Patent number: 4230191
    Abstract: A machine for making underground excavations by compacting soil comprises an eccentric shaft having journals on which there are mounted for a free rotation in a sequence, beginning from the front end, a conical member and tapered rolls forming in combination a conically expanding body. The eccentric shaft is coupled to a drive for rotation. The conical member has a through longitudinal diffuser passage, and the eccentric shaft also has a through longitudinal diffuser passage of a cross-sectional area enlarging in the direction away from the face of the excavation being made. The cross-sectional area of the passage of the conical member is smaller than the smallest cross-sectional area of the passage of the eccentric shaft by an amount such that the inside cross-sectional area of the passage of the conical member is substantially within the limits of the inside cross-sectional area of the passage of the eccentric shaft.
    Type: Grant
    Filed: January 24, 1979
    Date of Patent: October 28, 1980
    Inventors: Valentin K. Svirschevsky, Andrei A. Trofimuk, Gennady G. Vasiliev, Ivan P. Leonov
  • Patent number: 4230193
    Abstract: An improved rotary drill bit comprised of two or more elongated generally cylindrical drill members the lower ends of which form a cutting face. Each of the drill members includes a plurality of vertically spaced rows of diamond-shaped openings disposed, or formed, in the sides, or wall, thereof, the openings in adjacent rows being offset from each other and overlapping at their upper and lower ends whereby as the lower ends of the drill member wear away, cutting edges are continuously formed thereon by the diamond-shaped openings.
    Type: Grant
    Filed: December 15, 1978
    Date of Patent: October 28, 1980
    Assignees: Arthur G. Burki, Thomas G. Wygant
    Inventor: Clifford K. Logan, Jr.
  • Patent number: 4228862
    Abstract: The present invention relates to an apparatus for drilling holes in the ground. The apparatus comprises a cylindrical drilling tool having one end coupled to a motor assembly for rotating the tool by way of an elongate rotatable sleeve. A hydraulic jack is disposed in the sleeve for rotation therewith. The piston rod of the jack extends longitudinally of the drilling tool and carries a valve-action member arranged to allow drilled material to enter the drilling tool and to retain the material therein. The piston rod is movable longitudinally relative to said tool for the discharge of said material.The apparatus of the invention is able to drill holes rapidly in a large variety of soils.
    Type: Grant
    Filed: November 13, 1978
    Date of Patent: October 21, 1980
    Inventor: Antoine Causse
  • Patent number: 4207954
    Abstract: A drilling tool comprising a body having a leading face with a central recess providing the body with an annular leading cutting edge such that during drilling a central core is formed, and a central cone positioned axially in the recess for breaking up the core.
    Type: Grant
    Filed: March 31, 1978
    Date of Patent: June 17, 1980
    Assignee: Compagnie Francaise des Petroles
    Inventor: Robert Jerome
  • Patent number: 4130170
    Abstract: A probe construction for use in geological surveys designed to extract earth samples at a predetermined depth. The probe consists essentially of an elongated metal body with a hollow core, the longitudinal axis of the core being at approximately 5.degree. to the longitudinal axis of the metal body. A side outlet is provided along substantially the length of the metal body. The probe is adapted for engagement with the drive rod of a hammer mill or the like machine.
    Type: Grant
    Filed: February 8, 1977
    Date of Patent: December 19, 1978
    Assignee: Barymin Explorations Limited
    Inventor: Ronald H. C. Holman
  • Patent number: 4078622
    Abstract: A device is provided for creating recesses for road surface markers in road surfaces which makes initially a cut sufficient to stabilize the device in the desired position and then fragments and discharges core material within a circular cut defining the recess. Such fragmentation is effected by rotation of a plurality of radially disposed cutting edges each spanning only a portion of the radius of the material to be fragmented.
    Type: Grant
    Filed: August 5, 1976
    Date of Patent: March 14, 1978
    Inventor: Robert W. Taylor-Myers
  • Patent number: 4016942
    Abstract: A compression wave type signal of a selected frequency is transmitted into the ground at the bottom of a well bore being drilled. The signal is picked up by four microphones that are positioned in another well bore. The microphones have a known orientation with respect to the desired course of the well bore being drilled. The phase relationship of the transmitted signal picked up by the microphones is used to indicate at the surface the deviation between the course of the well being drilled and the desired course.
    Type: Grant
    Filed: December 28, 1973
    Date of Patent: April 12, 1977
    Assignee: Trunkline Gas Company
    Inventors: David E. Wallis, Jr., Robert G. Polansky, Peter R. Rahm
  • Patent number: 3982596
    Abstract: A rotary percussion bit comprises a body having at its upper end a threaded pin adapted to mate with a length of dual conduit drill stem. A plurality of down flow passages for air or other drilling fluid are near the periphery of the body. Inwardly of the down flow passages is an upflow passage. Channels across the lower face of the body connect the down flow and upflow passages. Over the bottom face of the body are located interior boring elements. The face is preferably concave, comprising a plurality of annular steps. At the lower end of the body is disposed a ring on the flat bottom of which are located gage and near gage boring elements. The ring extends down below the outer periphery of the bottom face of the body of the bit. The ring is secured to the body by quick attachable and detachable means in the form of an epoxy cemented straight threaded rotary shouldered connection, the ring having a bevelled lip extending upwardly around the bit body.
    Type: Grant
    Filed: December 30, 1974
    Date of Patent: September 28, 1976
    Assignee: Smith International, Inc.
    Inventor: Vincent Hugo Vetter
  • Patent number: 3951220
    Abstract: A drill bit for use in concentrically arranged dual drill strings. The bit has an outlet eccentrically arranged respective to its longitudinal axial centerline, and a formation engaging surface made of a plurality of spiraling faces which diminish in area as the cutting face curves about and toward the outlet. The area located between the spiraling faces form fluid conveying passageways through which a jet of fluid is directed toward the outlet, thereby carrying therewith cuttings formed by the spiral faces of the bit.
    Type: Grant
    Filed: August 19, 1974
    Date of Patent: April 20, 1976
    Assignee: Vance Industries, Inc.
    Inventors: Edwin Leslie Phillips, Jr., James David Carrigan
  • Patent number: D262630
    Type: Grant
    Filed: January 19, 1979
    Date of Patent: January 12, 1982
    Assignee: Robert W. Lee
    Inventor: Clifford K. Logan, Jr.