Solid Patents (Class 144/240)
  • Patent number: 11491561
    Abstract: A cutting tool having an elongate cutting head provided with a plurality of teeth and flutes in which a plurality of cooling grooves are recessed at a land region of each tooth between a cutting edge and a trailing edge. The grooves at the land do not extend to and are physically separated from the cutting edge to provide a tool optimized for cutting via radially consistent cutting edges and the promotion of heat exchange and dissipation from the rearward side/region of the teeth.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: November 8, 2022
    Assignee: SANDVIK INTELLECTUAL PROPERTY AB
    Inventor: Gaetano Pittala
  • Patent number: 11458648
    Abstract: The invention relates to apparatus for providing for the powered cutting of a workpiece, typically in the form of a planar or sheet material. The apparatus includes a rotatable blade to cut the workpiece and the blade is mountable such as in a first mode of use to be capable of being held in a fixed position in which the workpiece is moved past the blade, and a second mode of use in which the blade is moved with respect to the workpiece to cut the same. The workpiece is mounted on a base and the blade is mounted with respect to the base via one or more slide members.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: October 4, 2022
    Assignee: Power Box AG
    Inventor: Robert Firth
  • Patent number: 11065623
    Abstract: A grinding blade having a blade body, a plurality of tooth mounts, a plurality of cutting teeth, and a plurality of blade stops is disclosed. The blade body has a front surface, a back surface, and a blade mounting hole along a central axis. The tooth mounts and blade stops are integral with the blade body and protrude upward and away from the back surface and the central axis. Each tooth mount has a cutting tooth releasably coupled through a tooth aperture. The blade stops and tooth mounts are equal in number and are distributed alternatingly and with radial symmetry about the central axis. A cross section of the solid of revolution defined by rotating the blade stops about the central axis overlaps with at least two thirds of a cross section of the solid of revolution defined by rotating the cutting teeth about the central axis.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: July 20, 2021
    Inventor: Stephen Rock
  • Patent number: 10646968
    Abstract: A finishing tool of an end milling cutter can comprise: a chip-removing milling edge, which extends continuously with respect to the tool axis (A) over an axial length (L) on a circumferential surface (U), which is rotationally symmetrical about the tool axis, and removes workpiece chips from the workpiece surface at a radial chip-removing engagement depth (T to Tmax), and at least one non-cutting pressing ridge, which extends continuously axially with respect to the tool axis (A) over an axial length (L) on a circumferential surface which is rotationally symmetrical about the tool axis, is arranged following an associated milling edge by a pitch angle, and presses over its entire axial length (L), during the milling movement, at a radial non-cutting engagement depth (T or RS?RD) with respect to the tool axis into the workpiece surface machined by the associated milling edge, and smooths said workpiece surface.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: May 12, 2020
    Assignee: FRANKEN GMBH & CO. KG FABRIK FUER PRAEZISIONSWERKZEUGE
    Inventors: Helmut Glimpel, Hans-Juergen Lauffer, Andreas Bremstahler
  • Patent number: 9848962
    Abstract: A drill for an implant surgery is provided which allows a mucous membrane in the maxillary sinus to be quickly and safely lifted without being damaged during a surgery for the maxillary sinus. The drill for use in an implant surgery includes a connection portion formed at an upper end of a body of the drill to be connected with a driving device; and a cutting portion formed at a lower end of the body and having a cutting blade for drilling, wherein an outer circumferential edge of a distal end of the cutting portion protrudes rather than a center of the distal end of the cutting portion.
    Type: Grant
    Filed: September 13, 2010
    Date of Patent: December 26, 2017
    Assignee: OSSTEMIMPLANT CO., LTD.
    Inventors: Jong Hoon Moon, Tae Gwan Eom, Tae Euk Lee
  • Patent number: 9775587
    Abstract: A biopsy device is proposed comprising a shaft and a tubular member. The shaft is movably, i.e. rotatably as well as shiftably accommodated within the tubular member and comprises a spiral at a distal end portion of the shaft, wherein the spiral is formed by a twisted sheet. Such a spiral may be considered as a laterally open thread having no solid core.
    Type: Grant
    Filed: November 22, 2013
    Date of Patent: October 3, 2017
    Assignee: Koninklijke Philips N.V.
    Inventors: Waltherus Cornelis Jozef Bierhoff, Franciscus Marinus Antonius Maria Van Gaal, Bernardus Hendrikus Wilhelmus Hendriks, Vishnu Vardhan Pully
  • Patent number: 8235080
    Abstract: An adjustable router or shaper cutter assembly that facilitates the formation of an edge contour such as a rounded over contour on work-pieces of differing thicknesses.
    Type: Grant
    Filed: November 12, 2009
    Date of Patent: August 7, 2012
    Assignee: Lee Valley Tools, Ltd.
    Inventor: Robin C. Lee
  • Publication number: 20120103471
    Abstract: A carbide cutting tip including a rear surface and a bottom surface for mounting the tip to a cutting tool tooth, a top surface having a pair of peaks separated by a trough, the top surface including a frontward facet and a rearward facet sloped downwardly and rearwardly at a non-zero angle ? with respect to the frontward facet, and a front surface having a substantially flat lower portion and a concave upper portion having a shape defined by a segment of an ellipse, the lower portion being disposed substantially perpendicularly to the frontward facet of the top surface, the lower portion and the upper portion joining at a break point located at the apex of the major axis of the ellipse, the major axis of the ellipse being canted frontwardly from the break point at a non-zero angle ? with respect to the lower portion of the front surface.
    Type: Application
    Filed: November 3, 2010
    Publication date: May 3, 2012
    Applicant: Sandvik Intellectual Property AB
    Inventors: Kenneth Monyak, James Paumier, Joseph Fader
  • Patent number: 6640854
    Abstract: The invention relates to a treatment unit with a cutting tool (1) for treating wood, plastic or the like. Said treatment unit comprises a suction hood (6) with a ring (17) that encircles the tool (1) completely in the circumferential direction and at least partially in the axial direction. The suction hood (6) is located on the side of the drive spindle of the tool (1). A chip receiving opening (10) is provided in the tool (1) in the vicinity of the blade (4), said opening traversing the tool (1) in both the axial and the radial direction. A chip formed at the blade (4) is transported through the chip receiving opening (10) to the suction hood (6) from where the chip is removed by air suction.
    Type: Grant
    Filed: March 15, 2002
    Date of Patent: November 4, 2003
    Assignee: Ledermann GmbH
    Inventors: Kurt Kalmbach, Wilhelm Kalmbach, Hans-Jürgen Gittel, Ewald Westfal
  • Patent number: 6568442
    Abstract: The invention is for a method for removing at least a portion of a floorboard from a plurality of floorboards installed on a surface base. The method comprises isolating the floorboard or portion thereof for removal and removing a central portion of the isolated floorboard so as to leave a pair of elongate lateral strips, a pair of end portions and a substantially central open space. A routing bit having a shaft and a blade portion is then located such that the blade portion is parallel to, and cuts in, the same plane as the surface base on which the floorboard is installed. The blade is placed beneath the lateral strips and/or end portions so as to remove all material between a lower surface of the floorboard and the base upon which it is installed. The invention is also for a routing bit for removing a floorboard from the base upon which it is mounted.
    Type: Grant
    Filed: November 28, 2001
    Date of Patent: May 27, 2003
    Inventor: Joseph Anthony Meugniot
  • Patent number: 6561238
    Abstract: A door preparation station includes a data processing control system that drives a display for presenting sequential series of menu selections that illicit operator information that is used as control data to configure the station for preparing a door for receipt of predetermined door hardware (e.g., locks, hinges, etc.) of one type or another. Based upon responses received at the menu selections, the processing system positions and operates various door preparation cutting and drilling elements for the door preparation procedure.
    Type: Grant
    Filed: October 11, 2001
    Date of Patent: May 13, 2003
    Assignee: Norfield Industries
    Inventor: Charles A. Knighten
  • Patent number: 6546974
    Abstract: A stump removal tool for boring around a stump at ground level. The stump removal tool includes an elongate member having a first end, a second end and outer peripheral wall extending between the first and second ends. The elongate member has a generally circular cross-section taken transversely to a longitudinal axis of the elongate member. A connecting portion is attached to and extends away from the first end of the elongate member. The connecting portion is removably coupled to a power tool. A plurality of teeth is attached to an outer surface of the peripheral wall. The teeth are spaced from each other and are positioned in a pattern extending from the first end to the second end. The elongate member is attached to the power tool and rotated such that the teeth may be used for boring through a stump.
    Type: Grant
    Filed: January 25, 2002
    Date of Patent: April 15, 2003
    Inventor: Michael R. Mc Nabb
  • Patent number: 6401772
    Abstract: An apparatus for cutting dovetail joints comprises one or more trapezoidal mortising chisels mountable on a drill press, each trapezoidal mortising chisel having a trapezoidal cross sectional shape with a particular slope or “pitch” on its non-parallel sides. The trapezoidal mortising chisels are used to cut sockets in the tail board of a dovetail joints, where the sockets have a trapezoidal shape with sloped sides. A given slope can be selected for the sides of the sockets by selecting a trapezoidal mortising chisel having the given slope. A washer is also provided which is mountable about the tilt axis of a tiltable work table of the drill press. The washer has a set of holes located at an angle about the washer on either side of a reference radius, where the angle correspond to the slopes of the non-parallel sides of the trapezoidal mortising chisels.
    Type: Grant
    Filed: March 29, 2000
    Date of Patent: June 11, 2002
    Inventor: Terry J. Beitl
  • Patent number: 6382279
    Abstract: A cylindrical hollow blank 1 is separated longitudinally from inside an elongate block of wood by axial boring, the blank is dried and its outer and inner surfaces finished, eg by milling, turning and sanding, and a bottom piece (2, FIG. 2) and, if required, a lid (3, FIG. 2) are then added to form a container. A plurality of cylindrical blanks of different diameters may be produced from a single block. Two concentric core bits of different diameters may be used to bore a blank.
    Type: Grant
    Filed: April 20, 2000
    Date of Patent: May 7, 2002
    Inventor: Juhani Väisänen
  • Patent number: 6206062
    Abstract: In a shaft-type cutter body of hard material including a shaft for mounting the cutter in a chuck and a head including cutting areas with cutting edges disposed around the circumference of the head, the shaft and the head are formed integrally by injection die casting of powdered raw material followed by sintering. The unfinished cutter body includes cutting edge sections with recessed areas adjacent the cutting edge front surface area for receiving wood chips and delimiting the cutting edge surface area and a surface area receding radially inwardly from the rear cutting edge surface area of the cutting edge so as to limit the rear cutting edge surface area.
    Type: Grant
    Filed: March 19, 2000
    Date of Patent: March 27, 2001
    Assignee: Tiagra Hartstoff GmbH
    Inventor: Helge Motzer
  • Patent number: 6196286
    Abstract: A method for manufacturing a wood veneer surfaced furniture top with a profiled edge, utilizing a special tool and process, which when used collectively, eliminates the need for certain relatively costly machinery and manufacturing processes.
    Type: Grant
    Filed: December 28, 1999
    Date of Patent: March 6, 2001
    Assignee: Thermwood Corporation
    Inventor: Kenneth J. Susnjara
  • Patent number: 6158487
    Abstract: A keying system for a miter joint with a work holder for engaging the outer surfaces of the boards when assembled. A flat planar tool guide is fixed to the work holder and has a slot that receives and guides a router tool to cut a slot through both boards triangularly shaped in its longitudinal direction and shaped in cross section as the cutting tool. Keys having a shape complementary to the slots in both directions are fixed in the slots to both decorate and support the joint.
    Type: Grant
    Filed: May 18, 1999
    Date of Patent: December 12, 2000
    Inventor: Joseph P. S. Licari
  • Patent number: 5899251
    Abstract: One or a plurality of machined timber elements of complimentary first and second configuration wherein each element is characterized by having at least one face surface (1,2) and one abutment surface (3,4) wherein said abutment surface incorporates in said first configuration an elongate undercut slot or female dovetail (5) and in said second configuration incorporates a correspondingly shaped, undercut elongate protuberance or male dovetail (8) and said abutment surface is not orthogonal in relation to said face surface such that said first timber element configuration and said second timber element configuration are adapted for co-operative engagement to effect the joining together of a first timber element incorporating said first timber element configuration with a second timber element incorporating said second timber element configuration whereby the undercut slot of said first timber element interengages with the protuberance of said second timber element to form a self locking joint.
    Type: Grant
    Filed: July 15, 1997
    Date of Patent: May 4, 1999
    Inventor: Allan William Turner
  • Patent number: 5890409
    Abstract: A durable male slotting blade for creating cleanly sheared slots in corrugated cardboard. The male slotting blade is adapted to be mounted to a slotter head of a cardboard box fabricating machine, and is provided with a cutting surface having first and second sets of serrations. A first set of serrations is provided on one side of the cutting surface while a second set of serrations is provided on an opposing side of the cutting surface with a valley formed therebetween. The first set of serrations are provided offset from, or out-of-phase with, the second set of serrations to provide for a cleaner cut with less frayed edges. Each of the serrations includes a peak and a valley machined not only into the sides of the cutting surface but also down into the valley formed in the cutting surface such that as the blade encounters abrasive recycled fibers, and is worn away, a new cutting surface is repetitively provided to thereby result in a longer lasting and more durable blade.
    Type: Grant
    Filed: May 20, 1997
    Date of Patent: April 6, 1999
    Assignee: Zenith Cutter Co.
    Inventors: Ian S. Carlton, Cedric W. Blazer
  • Patent number: 5595226
    Abstract: A drilling/cutting machine for forming joints for accommodating metal protrusions of a metal plate connector. The machine can cut one or more joints simultaneously with a drilling/cutting bit that drills and simultaneously cuts smaller and larger width slots completing the joint.
    Type: Grant
    Filed: July 14, 1994
    Date of Patent: January 21, 1997
    Assignee: Nakanishi Construction Company
    Inventor: Teruo Nakanishi
  • Patent number: 5507331
    Abstract: A drilling/cutting bit for forming joints in wooden members to be connected together by a coupling. The bit simultaneously forms a smaller width slot, a larger width slot, and a curved transition between the slots.
    Type: Grant
    Filed: July 15, 1994
    Date of Patent: April 16, 1996
    Assignee: Nakanishi Construction Company
    Inventor: Teruo Nakanishi
  • Patent number: 5499667
    Abstract: A drill/cutting tool for making joints in wooden members for receiving a metal plate connector. The drill/cutting tool can bore a hole, and then simultaneously cut a smaller width groove and larger width groove from the hole to complete forming the joint. Also, a method of making a joint in wood members.
    Type: Grant
    Filed: June 21, 1994
    Date of Patent: March 19, 1996
    Assignee: Nakanishi Construction Company
    Inventor: Teruo Nakanishi
  • Patent number: 5361813
    Abstract: An apparatus and method for making wood patches wherein an elongate piece of wood patch stock is inserted longitudinally into an end of the apparatus. The wood patch stock is incrementally moved toward cutting blades by a clamp mounted on a carriage. A channel guides the elongate into a cutter clamp, which immobilizes the elongate patch stock for cutting by the cutter blades. The cutter blades pass transversely across the clamped elongate patch stock to cut a wood patch. The cut wood patch is blown into an exit chute, and the process is repeated.
    Type: Grant
    Filed: February 1, 1993
    Date of Patent: November 8, 1994
    Assignee: Oregon Industrial Machine & Manufacturing, Inc.
    Inventor: James D. Lay
  • Patent number: 5267593
    Abstract: A spindle arranged for mounting shaper cutters to an associated router is configured to include a lower shaft coaxially aligned with an upper shaft having an abutment collar therebetween. An upper threaded boss mounts a fastener assembly to secure and position the shaper cutter between the abutment collar and the upper shaft threaded boss.
    Type: Grant
    Filed: November 9, 1992
    Date of Patent: December 7, 1993
    Inventor: Arlin V. Patterson
  • Patent number: 5116166
    Abstract: A miter undercutter bit is provided which is functional to make a 45 degree angled miter. The assembly includes a rotatable shaft having a cutter mounted thereon. The cutter comprises a pair of 45 degree angle arms which upon rotation thereof make the miter. A bearing having a diameter substantially equal to that of the base of the cutter is utilized.
    Type: Grant
    Filed: November 6, 1990
    Date of Patent: May 26, 1992
    Inventor: Glenn Rinas
  • Patent number: 5088755
    Abstract: This snow ski, the sides of which have an inclination which is variable in relation to the plane of the sole of the ski, at different points along its length, and are constituted by curved convex or concave lines, in which the profiles of the sides are of variable curvature according to the cross-section in question of the ski.A procedure for manufacturing this ski consists, starting from a rough ski, in carrying out the machining of the lateral parts of the ski with the aid of a rotary tool with an axis perpendicular to the plane of the upper surface of the ski, the active surface of which is generated by a continuous monotonic curve, by carrying out a relative movement of the tool and of the ski simultaneously, in the direction of the length of the ski, in the direction of the width of the ski and in a direction perpendicular to the plane of the upper surface of the ski.
    Type: Grant
    Filed: September 11, 1990
    Date of Patent: February 18, 1992
    Assignee: Skis Rossignol S.A.
    Inventor: Francois Jodelet
  • Patent number: 4993465
    Abstract: Workpieces with alternating contour mating surfaces are produced by a routing tool comprising a working portion having an axis and an outer contour shaped so that in an axial cross-section of the working portion the outer contour includes a plurality of straight lines arranged in a consecutive order and each extending in a direction substantially along the axis.
    Type: Grant
    Filed: December 4, 1989
    Date of Patent: February 19, 1991
    Assignee: Robert Bosch GmbH
    Inventors: Lawrence M. Cotton, Gary R. Compton
  • Patent number: 4936361
    Abstract: A rotary cutter bar for a tree felling apparatus. The bar comprises a cylindrical rod having a plurality of raised cutting teeth on its surface. Each tooth is in the form of a short curved bar. The teeth are located on a plurality of equally spaced-apart, spiral paths extending about the cylindrical surface of the rod from one end to the other. The spiral paths extend at an angle of between 30.degree. and 60.degree. to the longitudinal axis of the rod.
    Type: Grant
    Filed: August 28, 1989
    Date of Patent: June 26, 1990
    Inventors: Gilles Mercier, Rene Gelinas, Jacques Mercier, Paul Mercier
  • Patent number: 4874001
    Abstract: A manicurist's bit for shaving away layers of an artificial fingernail. The bit comprises an elongated body portion having a right circular cross section, and has a plurality of angled knurls extending along the width of the body portion. In a preferred embodiment, one end of the body portion is concave. In operation, the bit is given a circular motion in the direction of the angle of the knurls, and is thereafter applied to the surface of the nail to be shaped. The bit shaves away portions of the fingernail, and can be used to shape the nail in the area near the cuticle, and can be used to shape the underside of the nail close to the finger tip.
    Type: Grant
    Filed: November 2, 1987
    Date of Patent: October 17, 1989
    Assignee: Konsepts Beauty Supply, Inc.
    Inventor: Lori Ferraris
  • Patent number: 4865093
    Abstract: An apparatus and method for forming a workpiece or chair mat with cleats on the underside thereof, and with a marginal peripheral area void of cleats, and for trimming the edge of a generally planar workpiece. A rotatable work table is provided for positioning the workpiece. A router head includes an inclined router blade engageable with the edge of the workpiece to form a beveled ramp edge thereabout. A template is positioned between the workpiece and the work table, and the router head has a cam follower engageable with and movable along the edge of the template for guiding the router blade along the edge of the workpiece during rotation of the work table. A cooling medium is directed toward the area of engagement between the router blade and the edge of the workpiece. The depth of cut is controlled by a cam disk mounted on the bottom of the router head engageable with the top of the workpiece.
    Type: Grant
    Filed: January 25, 1988
    Date of Patent: September 12, 1989
    Assignee: Tenex Corporation
    Inventors: John R. Ford, Robelino C. Gutierrez, Armando N. Carrera, William T. Galik
  • Patent number: 4850407
    Abstract: A cutter to be mounted on a spindle of a rotary tool for use in shaping timber. The cutter comprising a rigid member to be mounted co-axially on the tool spindle to rotate therewith and having a plurality of spaced cutting teeth about the periphery of the member, each tooth having a cutting edge extending in a direction transverse to the plane of rotation of the member, and a cutting edge extending in a direction generally radial to the axis of rotation of the member. A depth control projection in advance of each tooth to control the depth of cut of both the transverse and radial cutting edges.
    Type: Grant
    Filed: May 17, 1988
    Date of Patent: July 25, 1989
    Inventors: Kevin R. Inkster, David J. Lewis
  • Patent number: 4844135
    Abstract: Panel raising is accomplished with an elongate router cutter tool working against a workpiece or panel which is supported edgewise on the working surface of a work table.
    Type: Grant
    Filed: October 24, 1988
    Date of Patent: July 4, 1989
    Inventor: Bradley R. Witt
  • Patent number: 4782869
    Abstract: A device for mechanically splitting cleavable objects, especially blocks of wood, comprising two rotatable splitting wheels (2) whose rotation is effected by a motor (9). The splitting wheels (2) are provided with a number of teeth (40) and rotate in the directions A and B, respectively. Blocks of wood intended for splitting are fed in their longitudinal direction, direction C, in a guide chute (20), a centering device providing centering of the blocks relative to the splitting wheels (2). The splitting wheels (2) interact to effect cleaving of the wooden blocks and throw them divided into two parts through the outlet opening (22) of the guide chute (20).
    Type: Grant
    Filed: December 23, 1986
    Date of Patent: November 8, 1988
    Assignee: Maxwheel AB
    Inventor: Max Segerljung
  • Patent number: 4655648
    Abstract: A router tool and a cutting insert for transverse cutting of a work piece, preferably of fiber reinforced plastics. The router comprises a shank and a cylindrical router body having chip gullets and sites that have received cutting inserts. Each insert has a cutting edge which has a number of teeth extending in the rotational direction of the router. The inserts are staggered in the axial direction such that the router varying will present a right-handed cutting edge portion and a left-handed cutting edge portion whereby the work piece may be machined without producing defective burrs and fluffy fibers.
    Type: Grant
    Filed: February 27, 1985
    Date of Patent: April 7, 1987
    Assignee: Santrade Limited
    Inventor: Axel H. Hellbergh
  • Patent number: 4610581
    Abstract: An end mill adapted to make a full depth cut in a workpiece in a single pass and having the helix pitch angle of the cutting edges from 10.degree. to 30.degree.. In operation tightly curled substantially straight elongated chips substantially as long as the depth of cut in the workpiece are produced. A greatly increased feed rate is attained at greatly reduced rpm, as compared to conventional end mills.
    Type: Grant
    Filed: May 31, 1984
    Date of Patent: September 9, 1986
    Assignee: Lambert Consolidated Industries, Inc.
    Inventor: Joseph Heinlein
  • Patent number: 4593734
    Abstract: A special router for cutting an L-shaped groove in elongated frame members has an elongated cutter stem and an axis about which the stem is rotatable; the stem has substantially parallelogram cross sections in planes normal to that axis; and a cutter head is provided at the end of the stem and integral therewith, the head also having substantially prallelogram cross sections in planes normal to that axis. Further, the router head has generally outwardly convex outer surfaces and opposite flat sides intersecting said curved outer surfaces. The router is movable laterally to cut L-shaped grooves in the frame members, which are adapted to have their grooved ends joined by an L-shaped bracket receivable into the grooves to hold the members in L-shaped assembly.
    Type: Grant
    Filed: September 4, 1984
    Date of Patent: June 10, 1986
    Assignee: M. Bosley Wright
    Inventor: Robert S. Wallace
  • Patent number: 4470733
    Abstract: An improved cutting tool is provided for performing a number of different cutting functions. A pair of radial cutting edges are provided for boring and chamfering. Peripheral cutting edges are provided for slotting and profile milling. Relatively shallow flutes having a large convex surface portion give the tool rigidity for all cutting operations.
    Type: Grant
    Filed: August 6, 1982
    Date of Patent: September 11, 1984
    Assignee: Gulf & Western Manufacturing Company
    Inventor: John Marques, Jr.
  • Patent number: 4454901
    Abstract: A substantially triangular-shaped multi-directional rotary saw blade suitable for arcuate and plunge cutting is disclosed.
    Type: Grant
    Filed: August 8, 1980
    Date of Patent: June 19, 1984
    Inventor: Wilfred Thorsness
  • Patent number: 4244669
    Abstract: A cutter head for cutting templates from cardboards, plastics, and the like, which includes a high speed rotatable cutting stylus, and a holding-down device for holding down the material from which the templates are to be cut out. The holding-down device surrounds the cutting stylus and is firmly but adjustably connected to a non-rotatable but axially freely movable member of the cutter head.
    Type: Grant
    Filed: June 15, 1978
    Date of Patent: January 13, 1981
    Assignee: Aristo-Werke Dennert & Pape KG (GmbH & Co.)
    Inventors: Wolfgang Puritz, Gerhard Voss
  • Patent number: 4145159
    Abstract: The present invention relates to an improved drill bit. In the present invention there are disposed opposite each other on a shank a cutting blade with no relief and a post. The post prevents a center swing and is of a small diameter equivalent to a cutting-in amount reduced.
    Type: Grant
    Filed: April 4, 1978
    Date of Patent: March 20, 1979
    Inventors: Akio Yamada, Shohachi Shimizu
  • Patent number: 4082128
    Abstract: A planing apparatus comprises a knife replaceably mounted in a carrier and having two parallel major faces and two parallel minor faces inclined with respect to the major faces whereby the cross section of the knife forms a parallelogram, each of the minor faces forming a knife edge at their intersection with the major faces. A knife support supports the knife in the carrier and includes a first transverse ledge holding the knife in place and a second transverse ledge spaced from the knife. The second ledge has a thickness in slight excess of the thickness of the knife.
    Type: Grant
    Filed: March 30, 1977
    Date of Patent: April 4, 1978
    Inventors: Heinrich Barke, Gisela Barke