Having Axial, Core-receiving Central Portion Patents (Class 408/204)
  • Patent number: 10773315
    Abstract: A cutting device in accordance with some example embodiments is provided for use with an arbor assembly. The cutting device includes a blade having a plurality of teeth, and a back plate at a proximal end of the blade. The back plate has an outer end surface in which a plurality of ramp surfaces and pin locking recess are provided. A central through hole extending through the back plate. The ramp surfaces only allow the cutting device to be rotated relative to the arbor assembly in one direction.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: September 15, 2020
    Assignee: GREENLEE TOOLS, INC
    Inventors: Arthur Anton Piper, Kevin Tews
  • Patent number: 10748771
    Abstract: Disclosed herein is an apparatus for processing a substrate that forms a hole in a substrate while reducing a burr in the hole so that a module device can be inserted into the hole to reduce the thickness of a display device, and the display device using the apparatus. The apparatus for processing the substrate comprises a body configured to operably be rotatable, and a cylindrical cutting tip at an end of the body. The bottom surface of the cutting tip is in an acute angle with respect to a contact surface of the substrate to allow formation of a groove at the substrate.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: August 18, 2020
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Jeong Kweon Park, Jeong Joon Lee, Ju Ik Hong, Sang Chul Lee, Jangcheol Kim, Ik Hyun Kuon, Tagyoung Choi, Jinwook Kwak
  • Patent number: 10729490
    Abstract: A method and apparatus for treating tissue are disclosed, including intra-operative mapping of a probe ablation zone. The method uses a system that maps the proximal and distal margins of the probe ablation zone using tools that access the ablation target. In some embodiments, the tools comprise a bone drill, and an introducer assembly, including a cannula and a stylet. The tools have features or markings that cooperate to indicate which probe to use to achieve the desired ablation. The method further facilitates planning probe placement for delivering energy to treat (ablate) a desired ablation volume of a target tissue by using a system that maps both the target tissue and possible probe ablation zones.
    Type: Grant
    Filed: September 14, 2015
    Date of Patent: August 4, 2020
    Assignee: Medtronic Holding Company Sàrl
    Inventors: Neil Godara, Jason Woo, Terence Cheong
  • Patent number: 10717137
    Abstract: A drill bit has a cutting portion having an annular portion, where the annular portion has a first end on which is disposed a cutting element and a second end that includes an outer insertion element and a stop shoulder. The drill bit has a drill shaft portion having a cylindrical drill shaft, where the drill shaft has an inner insertion element with an end face on a side of the drill shaft facing the cutting portion. The outer insertion element and the inner insertion element together form a plug connection in an insertion direction that is parallel to the axis of rotation and the insertion elements are connectable to each other via a pin element that is movable into a slot-shaped recess. The pin element is attached to an outside of the inner insertion element and the outer insertion element has the slot-shaped recess.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: July 21, 2020
    Assignee: Hilti Aktiengesellschaft
    Inventors: Matthaeus Hoop, Christoph Weber, Thomas Britt, Christoph Amman
  • Patent number: 10589361
    Abstract: A tool for roughening a borehole surface. The tool includes a coupling portion for clamping the tool; a tool head for machining the borehole surface; and an extraction duct. The coupling portion is disposed at a first end of a tool shank and the tool head at an opposite, second end of the tool shank. The tool head has a cutter disposed circumferentially on the tool heat The tool head has a slit, which passes through from one side to the other and which, starting from an end face of the tool head, extends axially along a longitudinal axis of the tool. The extraction duct extends at least partly axially along the longitudinal axis of the tool for extraction of drilling dust. The extraction duct, starting from the end face of the tool head, extends inside the tool shank and discharges circumferentially into a connecting opening in the tool shank.
    Type: Grant
    Filed: September 20, 2016
    Date of Patent: March 17, 2020
    Assignee: Hilti Aktiengesellschaft
    Inventors: Hans-Peter Lederle, Michael Wiedemann, Peter Ostermeier
  • Patent number: 10549356
    Abstract: A hole cutter has a cylindrical blade body including a cutting edge and one or more axially-elongated apertures formed within a side wall of the blade body. The axially-elongated aperture is configured to receive a lever, such as a screwdriver, therethrough. Each axially-elongated aperture includes a first fulcrum axially spaced adjacent to the cutting edge, a second fulcrum axially spaced further away from the cutting edge than the first fulcrum, and optionally a third fulcrum axially spaced between the first and second fulcrums. A lever, such as a screwdriver, can be inserted into the aperture and placed against each of the fulcrums to lever slugs out of the interior of the blade body.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: February 4, 2020
    Assignee: BLACK & DECKER INC.
    Inventors: Joseph Thomas Novak, Matthew Christopher Green
  • Patent number: 10512474
    Abstract: Apparatus and methods are provided to penetrate a bone and associated bone marrow using a powered driver. The apparatus may include a housing; a drive shaft comprising a first end disposed within the housing and a second end extending from the housing, the second end of the drive shaft configured to releasably engage the intraosseous device; a motor disposed within the housing and rotatably engaged with the drive shaft; a rechargeable power supply configured to supply power to the motor; an electrical charging circuit configured to recharge the rechargeable power supply; and a visual indicator indicating a status of the rechargeable power supply. The apparatus may also include an electrical power circuit configured to measure one of torque and current flow through the motor.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: December 24, 2019
    Assignee: TELEFLEX MEDICAL DEVICES S.À R.L.
    Inventors: Larry J. Miller, David S. Bolleter, Robert W. Titkemeyer
  • Patent number: 10493537
    Abstract: A tool for creating a wall opening. The tool includes a hole saw; and a centering jig having a center axis, where the centering jig is constructed as a centering ring, into which the hole saw can be pushed at least partly, and in that both the hole saw and the centering ring have on their circumference an opening such that this can be pushed transverse to the center axis completely onto a line.
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: December 3, 2019
    Assignee: Hilti Aktiengesellschaft
    Inventors: Maximilian Sirch, Helmut Happach, Herbert Muenzenberger
  • Patent number: 10276383
    Abstract: Disclosed herein is an apparatus for processing a substrate that forms a hole in a substrate while reducing a burr in the hole so that a module device can be inserted into the hole to reduce the thickness of a display device, and the display device using the apparatus. The apparatus for processing the substrate comprises a body configured to operably be rotatable, and a cylindrical cutting tip at an end of the body. The bottom surface of the cutting tip is in an acute angle with respect to a contact surface of the substrate to allow formation of a groove at the substrate.
    Type: Grant
    Filed: July 3, 2017
    Date of Patent: April 30, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Jeong Kweon Park, Jeong Joon Lee, Ju Ik Hong, Sang Chul Lee, Jangcheol Kim, Ik Hyun Kuon, Tagyoung Choi, Jinwook Kwak
  • Patent number: 10213846
    Abstract: A method of machining a workpiece is provided that is capable of forming a fresh air inlet in an arbitrary position in an outer shell of a container. According to the present invention, a method of machining a workpiece is provided that includes: machining to form a round hole in a workpiece using a boring drill having a tubular end portion, the end portion provided with a flat surface and a notch, and having a blade on a side of the notch, by pressing the flat surface against the workpiece while rotating the drill to contact the blade with the workpiece.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: February 26, 2019
    Assignee: KYORAKU CO., LTD.
    Inventor: Kousuke Aihara
  • Patent number: 10092962
    Abstract: An apparatus for drilling a manhole includes a drill comprising a first motor and a drill bit. A rail extends longitudinally away from an exterior surface of the manhole. A carriage is movably engaged with the rail and is coupled to the drill. A mounting device supports the rail on an exterior of the manhole. The mounting device comprises features to transfer axial loading on the drill bit to the manhole. A method for drilling an opening in a manhole includes suspending a drill from a rail coupled to an exterior of the manhole. The rail extends laterally outwardly from the manhole. A drill bit forming part of the drill is rotated while moving the drill longitudinally along the rail toward the manhole. Axial reactive force generated by the drill is transferred to the manhole.
    Type: Grant
    Filed: January 18, 2016
    Date of Patent: October 9, 2018
    Inventor: Samuel B. Smith
  • Patent number: 9960579
    Abstract: A self-cutting, self-seating, self-securing electrical device is used for mounting lights and devices. It can be provided as an integral one piece box, with a saw ring blade provided as part of the round electrical work box, or the device can be provided without the built-in cutting saw ring blade, which is therefore provided as an add-on accessory which snaps into place within channel located along the top and channels on opposite sides of the downwardly extending round wall of the body of the self-seating electrical device. The self-seating electrical device also has two or more fasteners, such as three toggle swing clamps, to secure the electrical device in place in a cutout in a ceiling or interior or exterior wall panel, where the cutout is cut by the forward saw teethed blade edge of the electrical device.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: May 1, 2018
    Inventor: Greg Herth
  • Patent number: 9859262
    Abstract: A method of reducing heat flow between IC chips and the resulting device are provided. Embodiments include attaching plural IC chips to an upper surface of a substrate; forming a lid over the IC chips; and forming a slit through the lid at a boundary between adjacent IC chips.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: January 2, 2018
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Janak Patel, Subramanian Srikanteswara Iyer, Daniel Berger
  • Patent number: 9815124
    Abstract: The hole saw with threadably removable portion is an improved hole saw that includes a removable portion that is able to slide back and forth with respect to an outer drill bit. The outer drill bit includes internal threadings along an inner surface, which correspond with external threadings provided on an outer surface of the removable portion. When the hole saw has bored a hole into an object, a core remains inside of the outer drill bit. The rotation of the drill rotates the removable portion with respect to the outer drill bit in order to push the core out of the outer drill bit. The outer drill bit includes a shoulder, which works in concert with the removable portion so as to lock the components together when in use as a hole saw.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: November 14, 2017
    Inventor: Flamur Tulovic
  • Patent number: 9782839
    Abstract: A hole cutter has a substantially cylindrical blade body defining a blade body circumference, a cutting edge formed on one end of the blade body, and an axially-elongated slot formed through the substantially cylindrical blade body. The axially-elongated slot is configured to receive chips flowing from the cutting edge within the interior of the blade body and (i) into the slot, and/or (ii) through the slot, to prevent the collection of such chips within the interior of the blade body and/or at an interface between the blade body and work piece. The axially-elongated slot defines a first end adjacent to the cutting edge, a second end axially spaced further from the cutting edge, and a slot area. The hole cutter further defines a total slot area to blade body circumference ratio within the range of about 0.1 to about 0.3 depending on the size of the hole cutter.
    Type: Grant
    Filed: January 13, 2011
    Date of Patent: October 10, 2017
    Assignee: IRWIN INDUSTRIAL TOOL COMPANY
    Inventors: Joseph Thomas Novak, Matthew Christopher Green
  • Patent number: 9358619
    Abstract: A hole cutter has a substantially cylindrical blade body defining a blade body circumference, a cutting edge formed on one end of the blade body, and an axially-elongated slot formed through the substantially cylindrical blade body. The axially-elongated slot is configured to receive chips flowing from the cutting edge within the interior of the blade body and (i) into the slot, and/or (ii) through the slot, to prevent the collection of such chips within the interior of the blade body and/or at an interface between the blade body and work piece. The axially-elongated slot defines a first end adjacent to the cutting edge, a second end axially spaced further from the cutting edge, and a slot area. The hole cutter further defines a total slot area to blade body circumference ratio within the range of about 0.1 to about 0.3 depending on the size of the hole cutter.
    Type: Grant
    Filed: January 13, 2011
    Date of Patent: June 7, 2016
    Assignee: Irwin Industrial Tool Company
    Inventors: Joseph Thomas Novak, Matthew Christopher Green
  • Patent number: 9312630
    Abstract: The disclosure is directed to a coil spring locking connector offering multiple groove geometries to allow multiple connection positions along the direction of insertion. A connector with an external spring access opening is formed through the housing wall surface. The opening allows access to the coil spring to allow removal of the spring from the connector prior to removal of the connector from a locked position to prevent potential damage to connector components.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: April 12, 2016
    Assignee: Bal Seal Engineering, Inc.
    Inventor: Michelle Huang
  • Patent number: 9289218
    Abstract: A surgical tool, enabling extraction of a prosthesis from a bony implantation site of that prosthesis, defines a proximo-distal axis and includes a distal end head adapted both to cut at least partially the bonding interface between the prosthesis and the bony material of the implantation site and to fix itself to the prosthesis by rotation centered on the proximo-distal axis, according to embodiments of the present invention.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: March 22, 2016
    Assignee: Tornier, Inc.
    Inventors: Robert Courtney, Jr., Jeffrey M. Ondrla
  • Patent number: 9248514
    Abstract: An assembly is provided for forming holes in a workpiece. The assembly includes an arbor, a pin sleeve and a cutting device. The arbor has a nose having at least one threaded portion and at least one unthreaded portions on an external surface thereof. The arbor also has at least one pin passageway extending therethrough. The pin sleeve has at least one pin extending from a main body. The arbor extends through the pin sleeve. The cutting device has a back plate and a plurality of teeth extending therefrom. The back plate has a passageway defined by a wall with at least one threaded portion and at least one unthreaded portion. The at least one threaded portion of the cutting device is capable of engaging with the at least one threaded portion of the nose, and the at least one pin of the pin sleeve is capable of engagement with the at least one pin passageway of the arbor to secure the components together.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: February 2, 2016
    Assignee: Textron Innovations Inc.
    Inventors: Arthur Piper, Timothy Beed
  • Patent number: 9174284
    Abstract: A texturizing tool that creates concentric, circular patterns of burrs in the surface of a workpiece by graving, planning or plowing, curved stop-grooves each with a burr of the displaced material which remains securely attached to the workpiece. Toothed cylindrical saws having angled slots for a drive pin are concentrically assembled. When forced against the workpiece, each saw rotates some few degrees causing the teeth to cut the stop-grooves and making the burrs. The drive pin and a return spring are carried in a capped outer cylindrical actuator which the drive pin also passes through. The concentric saw's cutting teeth cut in opposite directions to cancel out the cutting forces on the workpiece. Articles so texturized may be used in structural adhesive bonding, and for embedment of texturized articles such as fasteners, washers, plates and the like, into molded plastic and composite structures while being molded.
    Type: Grant
    Filed: August 5, 2013
    Date of Patent: November 3, 2015
    Assignee: NUCAP INDUSTRIES, INC.
    Inventor: Winston MacKelvie
  • Patent number: 9022703
    Abstract: The present invention relates to a hole-saw assembly includes a hole-saw having at one end a plurality of cutting teeth and with a boss attached to the hole-saw at the other end two shafts. The assembly includes a mandrel coaxially aligned with said hole-saw and including a body having two bores there through coaxially aligned with said shafts. An annulus located on top of the body is coaxially aligned with said mandrel and hole saw and includes two holes, the annulus rotatable around its longitudinal axis from a first to a second position. In the first position the annulus holes are aligned with the bores and shafts allowing the shafts to be freely insertable and removable and in the second position the holes are misaligned to lock the shafts to the annulus. The mandrel further includes a pair of driving pins adapted to engage driving apertures found in hole-saws especially larger ones.
    Type: Grant
    Filed: June 10, 2010
    Date of Patent: May 5, 2015
    Inventor: Kym John Keightley
  • Publication number: 20150104264
    Abstract: A drilling tool is disclosed. The drilling tool includes a drilling stub, a cutting element attached to the drilling stub, and a fastening section for fastening onto a tool holder. The fastening section is divided into at least one guide region and one locking region, where at least one interlocking geometry, which protrudes in the axial direction beyond the remaining locking region, and which in particular is a bulge, is designed for transmission of a torque from the tool holder to the drilling tool, and the at least one interlocking geometry has two abutting surfaces each in the tangential direction. One first abutting surface of the two abutting surfaces is designed essentially parallel to a longitudinal axis of the drilling tool and the first abutting surface serves to transmit the torque.
    Type: Application
    Filed: March 14, 2013
    Publication date: April 16, 2015
    Applicant: Hilti Aktiengesellschaft
    Inventors: Andreas Vogel, Taack-Trakranen Van John
  • Patent number: 8992140
    Abstract: The present invention relates to a hole-saw assembly (10) including a hole saw (26) having at one end a plurality of cutting teeth and at the other end two shafts. The assembly includes a mandrel (16) coaxially aligned with said hole-saw and including a body having two bores there through coaxially aligned with said shafts. An annulus (20) located on top of the body is coaxially aligned with said mandrel and hole saw and includes two holes, the annulus rotatable around its longitudinal axis from a first to a second position. In the first position the annulus holes are aligned with the bores and shafts allowing the shafts to be freely insertable and removable and in the second position the holes are misaligned to lock the shafts to the annulus. The mandrel further includes a pair of driving pins (22) adapted to engage driving apertures (24) found in hole saws especially larger ones.
    Type: Grant
    Filed: October 15, 2009
    Date of Patent: March 31, 2015
    Inventor: Kym John Keightley
  • Publication number: 20150086287
    Abstract: The present disclosure provides a pipe threading system including an adapter and an attachment for a handheld electric drill that applies a threading to the outer surface of a pipe. The system includes at least one dies shaped to cut a thread of the pipe. The attachment includes a central open bore to allow the threading of pipe sections beyond the length of the die's cutting surface.
    Type: Application
    Filed: September 23, 2014
    Publication date: March 26, 2015
    Inventors: Gregory Connolly, Matthew Christopher Jon Keigher
  • Publication number: 20150071721
    Abstract: An assembly is provided for forming holes in a workpiece. The assembly includes an arbor, a pin sleeve and a cutting device. The arbor has a nose having at least one threaded portion and at least one unthreaded portions on an external surface thereof. The arbor also has at least one pin passageway extending therethrough. The pin sleeve has at least one pin extending from a main body. The arbor extends through the pin sleeve. The cutting device has a back plate and a plurality of teeth extending therefrom. The back plate has a passageway defined by a wall with at least one threaded portion and at least one unthreaded portion. The at least one threaded portion of the cutting device is capable of engaging with the at least one threaded portion of the nose, and the at least one pin of the pin sleeve is capable of engagement with the at least one pin passageway of the arbor to secure the components together.
    Type: Application
    Filed: September 10, 2013
    Publication date: March 12, 2015
    Applicant: GREENLEE TEXTRON INC.
    Inventors: Arthur Piper, Timothy Beed
  • Patent number: 8967924
    Abstract: A core drilling machine having an axial extending hollow drill shaft supported rotatably in a housing and rotated by means of a drive unit; a coaxial tool holder receiving an axially displaceable drill bit, the tool holder having a locking mechanism securing the drill bit in a rotationally fixed manner to the hollow drill shaft; wherein the hollow drill shaft is suitable for receiving a shaft of an interchangeable centre drill, the center drill axially supported against a first spring element; and an axial stop element preventing in a first position a complete displacement of the center drill into the interior of the hollow drill shaft and allows in a second position a complete displacement of the center drill into the interior of the hollow drill shaft; and an activation device for activating the first or second positions of the stop element.
    Type: Grant
    Filed: March 2, 2012
    Date of Patent: March 3, 2015
    Assignee: C. & E. Fein GmbH
    Inventors: Boris Richt, Christian Stark, Nicasio Garifo
  • Publication number: 20150016910
    Abstract: A hole cutter has a substantially cylindrical blade body that defines an interior surface and an exterior surface that is located on an opposite side of the blade body relative to the interior surface. A cutting edge is located at one end of the blade body that generates swarf in cutting the work piece. A pattern is formed on the exterior and/or interior surfaces of the blade body. The pattern is configured to direct swarf generated at the cutting edge through the path and away from the cutting edge.
    Type: Application
    Filed: July 2, 2014
    Publication date: January 15, 2015
    Applicant: Irwin Industrial Tool Company
    Inventors: William B. Korb, Joseph T. Novak
  • Patent number: 8919552
    Abstract: A method of packaging a hole saw includes positioning a circular cutting edge portion of the hole saw against a surface of a base member of a hang tag assembly. The base member includes a post that extends from the surface into a hollow interior defined by the hole saw. A cap member of the hang tag assembly is positioned adjacent a mounting portion of the hole saw. The cap member includes a stem and a display card portion. The stem is advanced through a bore defined in the mounting portion and into the hollow interior of the hole saw. The post is then secured to the stem within the hollow interior of the hole saw.
    Type: Grant
    Filed: May 20, 2013
    Date of Patent: December 30, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Melvin A. Pendergraph, Crystal Williams, Arrik Kim
  • Publication number: 20140334892
    Abstract: A support assembly for a core drill which utilizes an improved high strength spoked reinforcer. The reinforcer may be removably mounted a core drill tube by fasteners. A drive connection is removably mounted and centrally located on an outer disc of a pair of discs. The drive connection is adapted to connect with a drive shaft to cause rotation of the tube. The assembly can also include a split in the disc when the high strength spoked reinforcer is not welded thereto, thereby providing a means of water control. The high strength spoked reinforcer can be a separate piece that is bolted to the disc or can be integrally formed as one piece therewith.
    Type: Application
    Filed: July 29, 2014
    Publication date: November 13, 2014
    Applicant: Western Saw Manufacturers, Inc.
    Inventor: Anthony Baratta
  • Patent number: 8858133
    Abstract: Cutting apparatus includes a pilot arrangement which has a tip. The tip engages a workpiece to form a pilot recess to engage the workpiece and prevent the apparatus skidding across the surface of the workpiece. The tip can retract against the action of a spring. Accordingly, the apparatus is prevented from skidding across the workpiece, but wear on the tip is minimized.
    Type: Grant
    Filed: December 8, 2008
    Date of Patent: October 14, 2014
    Assignee: C4 Carbides Limited
    Inventor: Andrew Mark Beynon
  • Patent number: 8840344
    Abstract: An adjustable hole cutter for cutting a hole with a predetermined diameter in sheet or panel material includes a blade holder that moves along a track or slot to alter a diameter of the cut hole; a blade arc adjuster coupled to the blade holder; and one or more replaceable blade segments coupled to the blade holder.
    Type: Grant
    Filed: August 12, 2011
    Date of Patent: September 23, 2014
    Inventor: Bruce Winter Stenman
  • Publication number: 20140271007
    Abstract: A cylindrical drill body for a hole saw has cutting teeth on an end side and at least one cutout, which is located in a lateral surface of the cylindrical drill body at a distance from the cutting teeth. The cutout has a rectilinear boundary edge directed parallel to the end side.
    Type: Application
    Filed: March 7, 2014
    Publication date: September 18, 2014
    Applicant: Robert Bosch GmbH
    Inventor: Martin Richter
  • Publication number: 20140255117
    Abstract: A cutter assembly has an adapter, an outer collar, a recoil spring, a head, a pushing assembly and a central drill. The adapter has an L-shaped guiding slot and multiple balls. The outer collar is slidably and rotatably mounted around the adapter and has an annular protrusion and a positioning rod. The annular protrusion selectively abuts against the balls. The positioning rod is mounted on the outer collar and extends slidably into the guiding slot. The head is mounted detachably on the adapter and has a saw and an inserting rod. The inserting rod is inserted into the adapter and has an annular engaging groove. The annular engaging groove is formed around the inserting rod at a position corresponding to the balls to selectively hold the balls in the engaging groove.
    Type: Application
    Filed: March 11, 2013
    Publication date: September 11, 2014
    Applicant: MIYANACH IND. CO., LTD.
    Inventor: Yung-Teng TSENG
  • Patent number: 8827604
    Abstract: The hole saw apparatus cuts a hole in an existing work object such as drywall, for example. Floor and ceiling cuts as well as other hole cuts are also provided for. The apparatus enables a hole to be cut in the existing work object while guarding against electrical wire damage. The shank may be hexagonal and is chucked into an existing drill. Any existing wire is pulled through the guarded cylinder and even inserted into the sleeve if needed. The apparatus is then free to rotate around the wire and cut the desired hole. Upon completion of hole cutting, the apparatus is pulled away from the work object without damaging the wire. After cutting, a plug usually stays within a hole saw. The sliding mechanism of the apparatus provides for easily removing the cut plug from the hole saw.
    Type: Grant
    Filed: August 9, 2010
    Date of Patent: September 9, 2014
    Inventor: Tim Corey
  • Publication number: 20140248101
    Abstract: A power tool arbor assembly includes an arbor, an actuating member located at a second end of the arbor, and a friction member located at the second end of the arbor. The friction member is axially movable along the second end of the arbor. The friction member has a first axial position when no power tool accessory is attached to the second end of the arbor. The friction member is moveable toward a first end of the arbor from the first axial position to a second axial position in response to contact between the power tool accessory and the friction member, and the friction member is moveable toward the first end of the arbor from the second axial position to a third axial position when the actuating member is actuated.
    Type: Application
    Filed: May 13, 2014
    Publication date: September 4, 2014
    Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION
    Inventors: Austin J. Kazda, Michael S. Steele, Douglas W. Allen
  • Patent number: 8807886
    Abstract: A hole includes a blade cylinder and at least one first blade portion and at least one second blade portion, which are arranged along the rotation direction at intervals. Each of the first and second blade portions includes an inside blade and an outside blade. In the first and second blade portions that are adjacent to each other along the rotation direction, the sum of the number of cutting edges of the outside blade and the cutting edge of the inside blade of the first blade is three or more, the sum of cutting edges of the outside blade and the cutting edge of the inside blade of the second blade is two or more, the number of the cutting edge of the first blade being different from the number of the cutting edges of the second blade.
    Type: Grant
    Filed: November 17, 2010
    Date of Patent: August 19, 2014
    Assignee: Omi Kogyo Co., Ltd.
    Inventors: Shohei Omi, Yasuo Imai
  • Patent number: 8801342
    Abstract: There is provided a drill bit comprising a bit body having a receptor portion formed therein, the receptor portion being filled with a cutting oil; a drilling portion extended from one end of the bit body, having a channel coupled to the receptor portion formed therein, and having an opening formed in one end thereof and connected to the channel; and a cutting portion provided at a periphery of the opening of the drilling portion for drilling a workpiece, wherein the channel of the drilling portion has a small diameter in order that the cutting oil is not discharged outside of the channel by external pressure or gravitational force, and the channel of the drilling portion has a structure in which capillary action occurs due to cut chips flowing through the channel during drilling of the workpiece so that the cutting oil may be discharged by the capillary action.
    Type: Grant
    Filed: April 10, 2009
    Date of Patent: August 12, 2014
    Assignee: EHWA Diamond Industrial Co., Ltd.
    Inventors: Jae-Hyun Hong, Jong-Suk Choi, Do-Ui Hong
  • Patent number: 8801716
    Abstract: A system for repairing cartilage includes a trephine having a passage extending along a longitudinal axis of the trephine. The trephine has a distal end and a proximal end. The distal end includes a cutting member operable to cut a cartilage plug from a donor site. The passage is operable to receive the cartilage plug. Also, the trephine is flexible to selectively move between a first position in which the longitudinal axis is substantially linear and a second position in which the longitudinal axis is nonlinear. Moreover, the system includes a guide tool that is removably coupled to the trephine. The guide tool is operable to selectively move the trephine between the first and second positions. In addition, the system includes an ejector tool that ejects the cartilage plug from the passage toward a defect site.
    Type: Grant
    Filed: August 24, 2010
    Date of Patent: August 12, 2014
    Assignee: Biomet Manufacturing, LLC
    Inventor: Jason D. Meridew
  • Patent number: 8794880
    Abstract: A core cutter includes a tubular body portion and a plurality of cutting blades arranged at a tip end of the body portion at predetermined intervals in a circumferential direction. At least one cutting blade serves as an inner cutting blade, and the remaining cutting blades serve as outer cutting blades. Through grooves penetrate a tip end of the body portion to open toward a tip end side of the core cutter. Each of the cutting blades having the same circumferential-direction size as the through groove. Gullets are configured to discharge the chips, each of the gullets formed by an outer peripheral surface. The cutting blades are welded to through grooves such that a radially inner end of an axial-direction tip end portion of each of the cutting blades coincides with or substantially coincides with a peripheral surface of an axial-direction tip end portion of the gullet.
    Type: Grant
    Filed: June 15, 2007
    Date of Patent: August 5, 2014
    Assignee: Kabushiki Kaisha Miyanaga
    Inventor: Masaaki Miyanaga
  • Patent number: 8794881
    Abstract: The invention relates to a drilling tool having a large drill, in particular a core drill, in which a center drill is guided in an axially flexible or movable manner, with the axial movement of said center drill relative to said large drill being limited by at least one limit stop, wherein at least one pin that is supported on the large drill, the shaft thereof or a transition therebetween, extends toward the center drill, and the pin (24) is formed at an attachment body (26) comprising a contact surface (46) that abuts on a counter contact surface (52) of the drilling tool (10) and in particular has at least partially a larger lateral extension than the pin.
    Type: Grant
    Filed: December 12, 2011
    Date of Patent: August 5, 2014
    Assignee: DreBo Werkzeug Fabrik GmbH
    Inventors: Alexander Zürn, Martin Stumpp
  • Patent number: 8790052
    Abstract: A bolt on drive assembly for a core drill which utilizes an improved high strength spoked reinforcer mounted beneath a disc. The disc and high strength spoke reinforcer are removably mounted on the tube by bolt fasteners. A drive connection is removably mounted and centrally located on a outer disc of the pair of discs. The drive connection is adapted to connect with a drive shaft to cause rotation of the tube. The system can also include a split in the disc when the high strength spoked reinforcer is not welded thereto thereby providing a means of water control. The high strength spoked reinforcer can be a separate piece that is bolted to the disc or can be integrally formed as one piece therewith.
    Type: Grant
    Filed: April 27, 2010
    Date of Patent: July 29, 2014
    Assignee: Western Saw
    Inventor: Anthony Baratta
  • Patent number: 8777528
    Abstract: A outer diameter shaft reducer tool includes a cutter head and main body capable of assembly together through the use of a pair of set screws. The assembly can then easily be connected to a hand-held drill through a common extension thereby allowing for the provision of automated rotation of the cutting assembly. To reduce the outside diameter of a shaft, a user inserts the bar or rod into a lumen within the main body and applies pressure to cause a number of cutting teeth to engage the end portion of the bar or rod near the outer portion of the end face. As the teeth cut, the outside diameter of the shaft is thereby reduced.
    Type: Grant
    Filed: April 24, 2012
    Date of Patent: July 15, 2014
    Inventor: Ronald Anthony Polizzi
  • Patent number: 8770897
    Abstract: A compact assembly for aligning a coring tool relative to a pipe sidewall. The coring tool includes a hollow, cylindrical hole saw mounted to an arbor that has an elongated pilot shaft centered in the hole saw. The assembly is made up of a base plate that is attachable to the pipe sidewall. In one embodiment, a tubular sleeve is mounted to the base plate and has a bore diameter sized for receiving the pilot shaft as the hole saw is advanced toward and saws through the pipe wall, and the entire assembly is sized to fit inside the hole saw as the hole saw saws through the pipe sidewall. In another embodiment, the base plate is configured for use with pipe sidewalls that include outwardly protruding ribs.
    Type: Grant
    Filed: November 4, 2009
    Date of Patent: July 8, 2014
    Assignee: Advanced Drainage Systems, Inc.
    Inventor: Frank P. Martin
  • Patent number: 8753048
    Abstract: A hole saw that includes a saw body including a circular cutting edge having a cutting edge diameter, and the saw body is coupled to a guide member for rotation with the guide member. A pilot is coupled to the guide member for movement relative to the guide member and the saw body, and the pilot includes an outer guide surface having a diameter that increases in a direction from a second end portion of the guide member toward a first end portion of the guide member. The pilot is coupled to the guide member such that at least a portion of the outer guide surface extends past the circular cutting edge of the saw body in a direction from the first end portion of the guide member toward the second end portion of the guide member.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: June 17, 2014
    Assignee: Milwaukee Electric Tool Corporation
    Inventor: Michael Naughton
  • Patent number: 8753049
    Abstract: A cutting tool is designed to prevent chip packing. The cutting tool includes a body that rotates about an axis center, a hole portion that is open in a tip end surface of the body, a wall portion that is formed of the hole portion and an outer circumferential surface of the body, a notch portion that is communicated with the hole portion, and a blade portion that is formed or held at a portion where the notch portion intersects with the tip end surface of the wall portion. The blade portion includes an inner side surface that passes through an inner end portion of a bottom blade and intersects with a rake surface through a ridge line. The inner side surface is inclined so that a distance between the inner side surface and the axis center is increased towards a direction opposite to the rotational direction of the body.
    Type: Grant
    Filed: September 23, 2009
    Date of Patent: June 17, 2014
    Assignees: OSG Corporation, BTT Corporation
    Inventors: Jiro Osawa, Norihiro Masuda, Wataru Aoki
  • Patent number: 8721236
    Abstract: A power tool arbor assembly includes an arbor; an actuating member located at a second end of the arbor; and a friction member located at the second end of the arbor, the friction member being axially movable along the second end of the arbor. The friction member has a first axial position when no power tool accessory is attached to the second end of the arbor, the friction member being moveable toward a first end of the arbor from the first axial position to a second axial position in response to contact between the power tool accessory and the friction member, and the friction member being moveable toward the first end of the arbor from the second axial position to a third axial position when the actuating member is actuated.
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: May 13, 2014
    Assignee: Milwaukee Electric Tool Corporation
    Inventors: Austin J. Kazda, Michael S. Steele, Douglas W. Allen
  • Patent number: 8714889
    Abstract: The problem of penetrating through nets and other objects is solved by cutting the object using concentric cutters in which a rotatable cutter having floating teeth rotates concentrically about a stationary cutter having fixed teeth. The object is cut by a severing action caused by the floating teeth of the rotatable cutter sliding against the fixed teeth of the stationary cutter. Embodiments of the invention include a UUV system for penetrating through fishing nets and other objects, concentric cutting assemblies for use in the UUV system and other systems, and a method for penetrating through fishing nets and other objects. A UUV system in accordance with an embodiment of the invention has a concentric cutting assembly at the forward end and a propulsor at the aft end. The concentric cutting assembly integrates seamlessly within the UUV housing and is deployed from the forward end of the UUV, enabling the UUV to quickly and efficiently penetrate through objects blocking its path.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: May 6, 2014
    Assignee: Adaptive Methods, Inc.
    Inventors: Walter Allensworth, Conrad Zeglin, James Wiggins
  • Publication number: 20140112728
    Abstract: A bolt on drive assembly for a core drill which utilizes an improved high strength spoked reinforcer mounted beneath a disc. The disc and high strength spoke reinforcer are removably mounted on the tube by bolt fasteners. A drive connection is removably mounted and centrally located on a outer disc of the pair of discs. The drive connection is adapted to connect with a drive shaft to cause rotation of the tube. The system can also include a split in the disc when the high strength spoked reinforcer is not welded thereto thereby providing a means of water control. The high strength spoked reinforcer can be a separate piece that is bolted to the disc or can be integrally formed as one piece therewith. An adapter is provided that allows for standard drilling that fits into a recess in the center hub and is removable to expose the recess for attachment to a specialized drill motor, such as an A-flange.
    Type: Application
    Filed: April 26, 2011
    Publication date: April 24, 2014
    Applicant: WESTERN SAW MANUFACTURERS, INC.
    Inventor: Anthony Baratta
  • Publication number: 20140102276
    Abstract: Saw blades, including band saw blades, reciprocating saw blades, hole saw blades and hand hack saw blades, are made from a bi-metal strip. The bi-metal strip includes a cutting edge defined by a plurality of cutting teeth that is welded to an axially-elongated carbon or spring steel backing. The cutting edge is formed of a high speed steel alloy consisting essentially of: about 8/10% to about 1% carbon, up to about 45/100% silicon, up to about 4/10% manganese, up to about 3/100% phosphorous, up to about 3/100% sulfur, about 4% to about 6% cobalt, about 3% to about 5% chromium, about 4-1/2% to about 5-1/2% molybdenum, about 1% to about 2-1/2% vanadium, about 5-1/2% to about 7% tungsten, and about 74% to about 78-1/2% iron.
    Type: Application
    Filed: October 16, 2013
    Publication date: April 17, 2014
    Applicant: Irwin Industrial Tool company
    Inventors: Mark J. Wysk, Arthur C. Reardon
  • Patent number: 8696268
    Abstract: An apparatus for enlarging an existing hole in an object includes a separate hole saw with a center pilot shaft. A guide tube with a disk attached at one end inserts into the preexisting hole in the object and receives a bridging web with a plurality of tapered radial arms cumulatively forming a cone shape on the other end. The space between the bridging web and the disk is reduced by a threaded fitting to clamp the guide tube on the object within the existing hole. When the cone-shaped web wedges into the pre-existing hole, the guide tube is moved toward the axis of the pre-existing hole. The bore of the guide tube slideably receives the pilot member to guide the hole saw to rotate coaxially relative to the bore when cutting the second hole. A flat web may be used for non-coaxial cutting.
    Type: Grant
    Filed: February 13, 2012
    Date of Patent: April 15, 2014
    Assignee: Office Depot, Inc.
    Inventors: Grant John Bell, James Watson