Ejector Patents (Class 408/68)
  • Patent number: 9808869
    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, 2010
    Date of Patent: November 7, 2017
    Assignee: IRWIN INDUSTRIAL TOOL COMPANY
    Inventors: Joseph Thomas Novak, Matthew Christopher Green
  • Patent number: 9272477
    Abstract: A pressing tool in which, according to work content, an exchange tool is held so as to be capable of being exchanged by attachment/detachment by a locking bolt penetrating through a mounting portion provided to the tool main body, and the exchange tool is actuated by a pressing member. The outer periphery of the shank of the locking bolt is provided with: an annular groove for locking, arranged on the bolt-head side so as to be partially discontinuous; a release groove extending from the discontinuous part of the annular groove toward the tip of the bolt along the shank at an incline so as to gradually get shallower; and a retaining annular groove formed on the shank further toward the tip of the bolt than the release groove, the bolt-head side inner wall of the retaining annular groove being formed as a tapered incline. The mounting part is provided with a locking pin that fits into the locking annular groove, the release groove, and the retaining groove and that is capable of moving between the grooves.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: March 1, 2016
    Assignee: IZUMI PRODUCTS COMPANY
    Inventor: Shin Kasai
  • Patent number: 9276300
    Abstract: A surgical instrument includes a housing having a shaft extending therefrom. An end effector is operably supported at the distal end of the shaft includes a pair of jaw members. A generator operably coupled to the housing is in operable communication with a battery assembly of the surgical instrument to convert electrical energy into at least one of RF and ultrasonic energy to energize the at least one activatable jaw member. A thermally-activatable device in operable communication with either the generator or the battery assembly is configured to promote air-flow around the generator and battery assembly.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: March 1, 2016
    Assignee: Covidien LP
    Inventor: Peter M. Mueller
  • Patent number: 9186730
    Abstract: An automated core drilling device comprising a rigid drilling tower, a floating chuck assembly, and a drill bit. Rigid drilling tower comprising at least three vertical column members, a lower perimeter frame, and an upper perimeter frame. Floating chuck assembly comprising a drill bit axis-of-rotation vertical clearance channel, at least three horizontal support arms, at least three feed motor platforms, at least three feed motors, a hub casing, a hollow-centered bit driveshaft, a bit driveshaft sprocket, an offset spindle driveshaft sprocket, an offset spindle driveshaft, and an offset spindle motor. An automated core drilling device further comprising a computer with custom software, a monitor point for the electric current draw of said offset spindle motor or a monitor point for the revolution rate of said offset spindle driveshaft, and a control point for the electric current draw of each of said at least three feed motors.
    Type: Grant
    Filed: May 9, 2013
    Date of Patent: November 17, 2015
    Inventor: Greg Sandler
  • 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: 20140314505
    Abstract: A hole saw assembly including an elongated arbor, a mounting piece arranged around the arbor and rotationally locked to the arbor but slidable over the arbor, a circular saw blade mounted on the mounting piece, the rotational axis of the circular saw blade coinciding with the longitudinal axis of the arbor, a central drill extending along the rotational axis of the circular saw blade and being rotationally and axially fixed to the arbor, means for releasably fixating the mounting piece in relation to the arbor at one or more positions along the arbor and a plug ejector for ejecting a plug of sawn material from the interior of the circular saw blade by sliding the mounting piece and the circular saw blade in relation to the central drill and for working as a stop for the sliding of the mounting piece towards the tool end of the arbor.
    Type: Application
    Filed: January 3, 2012
    Publication date: October 23, 2014
    Applicant: Føvling Træbyg ApS
    Inventor: Erling Viuf
  • 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: 8113748
    Abstract: A hole saw with slug remover including a top cylindrical housing; a bottom cylindrical housing attached to the top cylindrical housing, the bottom cylindrical housing having teeth for cutting; a pilot drill extending through the top cylindrical housing and bottom cylindrical housing; a drive screw rotatably affixed to the top cylindrical housing, the drive screw having a threaded exterior; and an ejection plunger engaging the threaded exterior of the drive screw wherein the ejection plunger is forced downward to eject a slug when the drive screw rotates counter-clockwise and is forced upward when the drive screw rotates clockwise.
    Type: Grant
    Filed: August 5, 2009
    Date of Patent: February 14, 2012
    Inventor: Travis E. Werner
  • Patent number: 8042613
    Abstract: A drilling head, method of drilling, and use of the drilling head, for reboring a stuck valve or drilling into the formation downhole and, in particular a drilling tool having a drilling head and a driving unit. The drilling head includes a hole saw beside a drill bit for cutting out a piece from the stuck valve. A drilling system includes the drilling tool and a driving tool for moving the drilling tool downhole.
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: October 25, 2011
    Assignee: Weltec A/S
    Inventors: Jørgen Hallundbaek, Sven Karsten Jensen, Thomas Sune Andersen
  • Patent number: 7967535
    Abstract: A hole saw having a tubular cutting portion, a pilot drill bit, an ejection plate disposed within the tubular cutting portion and a compression spring cooperating with the plate further includes a guide structure fixed to the ejection plate and slidingly cooperating with a helical flute of the pilot drill bit. The compression spring and cooperating guide structure provide a combination of linear and rotational ejection of a waste plug from the hole saw. A duel set screw feature facilitates waste plug removal if needed and includes a first set screw frictionally engaged with a flat surface of the drill bit and a second set screw cooperating with a circular groove running about the drill bit.
    Type: Grant
    Filed: August 20, 2008
    Date of Patent: June 28, 2011
    Inventors: Cecil Eiserer, David Brunscher
  • Patent number: 7934893
    Abstract: Described is a quick-change arbor for a tool, in particular a hole saw (2), the arbor comprising a longitudinal body (3) having a drive end and a tool end, means (6) for attaching the tool which are provided with a central hole allowing a sliding of the attachment means (6) over the longitudinal body (3), and means for rotationally and axially locking the attachment means (6) to the longitudinal body (3). The attachment means (6) are slidably releasable from the longitudinal body (3), and can after applying a latch (9-1) in the attachment means (6) simply be slid over the body in order to push a plug of the sawn material out of the hole saw (2).
    Type: Grant
    Filed: December 10, 2004
    Date of Patent: May 3, 2011
    Assignee: A.V. Custom Style B.V.
    Inventor: Hubert Gillissen
  • Patent number: 7900710
    Abstract: There is provided an improved, simple and effective, powered hole-cutting apparatus, otherwise referred to as a power cup cutter, comprised of a USGA approved cutting cylinder modified with an internal plunger and an elongated threaded rod, whereby the cutting cylinder is driven into the soil by the rotation of the rod which is attached to an electric drill for easy and effortless cutting of a hole on golf course greens. With a straightforward reversal of the drill rotation, extraction of the soil plug from the newly formed hole and subsequent insertion of the soil plug into the previous hole will restore the golf course greens for golf play. The ability to cut holes quickly and efficiently is essential for golf course maintenance, but contemporary manual-operated cup cutters have fallen short of offering an efficient means of both the extraction and the insertion of the soil plug. Current methods are highly labor-intensive and require 25-30 minutes for each hole.
    Type: Grant
    Filed: November 9, 2007
    Date of Patent: March 8, 2011
    Inventor: Michael B. Hansen
  • Patent number: 7818867
    Abstract: A hole saw having efficient slug removal preferably includes a saw cup, a shank portion and a pilot cutting device. A cutting surface is formed on an open end of the saw cup. The inside surface, outside surface and cutting surface of the saw cup are given a low friction treatment. A fluoropolymer resin coating is used for the low friction treatment. The friction treatment is applied by spraying thereof on the saw cup. The saw cup is then heated to a predetermined temperature for a set period of time. The low friction treatment is cured when the saw cup is used. The shank portion is attached to a closed end of the saw cup with any suitable fastening process. The shank portion preferably retains the pilot cutting device.
    Type: Grant
    Filed: January 8, 2010
    Date of Patent: October 26, 2010
    Inventors: Richard E. Capstran, Mirko Buzdum
  • Patent number: 7766583
    Abstract: One embodiment relates to a workpiece removal device for a plug cutter. This combination comprises a housing having a longitudinally extending surface, a first closed end and a second open end opposite the first closed end. A boss is coupled (removably coupled for example) to the first closed end and extends toward the second open end, and a biasing member (a spring for example) is attached to a distal end of the boss. The combination further comprises means for contacting a predetermined portion of the biasing member with a workpiece, whereby a preselected portion of the workpiece is ultimately severed from the workpiece. The biasing member ejects the preselected portion from the plug cutter, forming a plug.
    Type: Grant
    Filed: February 17, 2006
    Date of Patent: August 3, 2010
    Assignee: Eazypower Corporation
    Inventor: Burton Kozak
  • Publication number: 20100086372
    Abstract: A hole saw with slug remover including a top cylindrical housing; a bottom cylindrical housing attached to the top cylindrical housing, the bottom cylindrical housing having teeth for cutting; a pilot drill extending through the top cylindrical housing and bottom cylindrical housing; a drive screw rotatably affixed to the top cylindrical housing, the drive screw having a threaded exterior; and an ejection plunger engaging the threaded exterior of the drive screw wherein the ejection plunger is forced downward to eject a slug when the drive screw rotates counter-clockwise and is forced upward when the drive screw rotates clockwise.
    Type: Application
    Filed: August 5, 2009
    Publication date: April 8, 2010
    Inventor: Travis E. Werner
  • Publication number: 20100067995
    Abstract: A hole-saw assembly including a hole-saw having at one end a plurality of cutting teeth and at the other end a base having two holes therethrough. two shafts. The assembly includes a mandrel coaxially aligned with said hole-saw and including a body having two bores therethrough, and an annulus located on top of the body which is coaxially aligned with said mandrel and hole saw. The annulus includes two shafts co-axial with the mandrel bores, and is rotatable around its longitudinal axis from a first to a second position. In the first position the annulus shafts are aligned with the base holes allowing the shafts to be freely insertable and removable and in the second position the shafts are misaligned to lock the shafts to the base. In one embodiment the mandrel bores are shaped to accommodate rotation of the shafts, and in a further embodiment, the shafts are configures to rotate within circular mandrel bores.
    Type: Application
    Filed: November 28, 2007
    Publication date: March 18, 2010
    Inventor: Kym John Keightley
  • Patent number: 7665937
    Abstract: Milling cutter (1), which can rotate about a cutter longitudinal axis (A), comprises a sleeve-shaped shaft (2) provided with an inner lying chip evacuation channel (11), which is arranged, in essence, symmetric to the cutter longitudinal axis (A), and with a suction opening (12). The milling cutter also comprises a milling head (3, 3a, 3b, 3c), which is held coaxial to the cutter longitudinal axis (A) and to the shaft (2) while being held on said shaft and which comprises, as cutting edges (7, 9), a face cutting edge (7) and a peripheral cutting edge (9). At least one cutting edge (7, 9) forms a positive rake angle (?Ya,?Yr) on the periphery of the milling head (3, 3a, 3b, 3c). The milling cutter (1) is particularly suited for machining light metals, especially for circular milling.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: February 23, 2010
    Assignee: Kennametal Inc.
    Inventors: Dirk Kammermeier, Peter Mergenthaler
  • Patent number: 7658576
    Abstract: A hole saw having efficient slug removal preferably includes a saw cup, a shank portion and a pilot cutting device. A cutting surface is formed on an open end of the saw cup. An inside surface of the saw cup is given a low friction treatment and preferably an outside surface thereof. The shank portion is retained on a closed end of the saw cup. The pilot cutting device is preferably a drill, but other cutting devices may also be used. A second embodiment of a hole saw having efficient slug removal preferably includes a saw cup, a shank portion and a pilot cutting device. The saw cup includes a prior art saw cup, at least two side openings and a cutting surface. The at least two side openings are formed through the prior art saw cup to remove a substantial portion of a side wall.
    Type: Grant
    Filed: January 20, 2009
    Date of Patent: February 9, 2010
    Inventors: Mirko Buzdum, Richard E. Capstran
  • Patent number: 7637188
    Abstract: A workpiece ejecting device for a machine tool, in which the ejecting bar cannot be rotatably driven at the time of high velocity rotation of the spindle to thereby prevent occurrence of vibration, noise and frictional heat, and so that the workpiece can be ejected smoothly. The workpiece ejecting device comprises: a front bearing unit installed at an inner peripheral surface of a front end portion of the drawing tube; an ejecting cylinder located behind the chucking cylinder and installed directly on an axial line identical with that of the front bearing unit, and an ejecting rod, wherein the ejecting rod is provided at a center axis thereof with at least one fluid passing opening through which fluid for removing alien materials is supplied, and a front end of the ejecting rod is installed to be supported by the front bearing unit.
    Type: Grant
    Filed: September 19, 2005
    Date of Patent: December 29, 2009
    Assignee: Doosan Infracore Co., Ltd.
    Inventors: Tae Hwan Joo, Kyeong Sik Kwon
  • Patent number: 7559726
    Abstract: A drill plug ejection system includes a drill and a drill bit coupled to the drill. The drill rotates the drill bit. A hole saw is mounted on the drill bit and includes a base wall and a perimeter wall that is attached to and extends away from the base wall. The perimeter wall has an terminal edge defining an opening into the hole saw. The terminal edge comprises saw teeth for cutting into material and removing a plug from the material. A plate has a first side, a second side and a peripheral edge. The plate has an aperture therein extending into the first side and outwardly of second side. The drill bit extends through the aperture and the second side faces the opening of the hole saw. A pair of biasing members is mounted on the plate and bias the plug outwardly of the hole saw.
    Type: Grant
    Filed: September 6, 2007
    Date of Patent: July 14, 2009
    Inventor: Leroy L. Beach
  • Patent number: 7371034
    Abstract: A drilling attachment for use in wet and dry drilling operations includes a housing having first and second fluid conduits, and a drive shaft mounted within the housing and having fluid transmitting first and second end portions in fluid communication with a respective first and second fluid conduit. In one embodiment, at any time one end of the drive shaft is coupled to a drive unit and the other end of the drive shaft is coupled to a core drill bit. In a dry drilling operation, dust is extracted from the core of the drill bit, is passed through the drive shaft and exits the housing via one of the fluid conduits. In a wet drilling operation, fluid such as water is passed through the other of the fluid conduits, through the drive shaft and into the core of the drill bit.
    Type: Grant
    Filed: June 6, 2003
    Date of Patent: May 13, 2008
    Inventor: John Clark
  • Patent number: 7311481
    Abstract: Milling cutter (1), which can rotate about a cutter longitudinal axis (A), comprises a sleeve-shaped shaft (2) provided with an inner lying chip evacuation channel (11), which is arranged, in essence, symmetric to the cutter longitudinal axis (A), and with a suction opening (12). The milling cutter also comprises a milling head (3, 3a, 3b, 3c), which is held coaxial to the cutter longitudinal axis (A) and to the shaft (2) while being held on said shaft and which comprises, as cutting edges (7, 9), a face cutting edge (7) and a peripheral cutting edge (9). At least one cutting edge (7, 9) forms a positive rake angle (?a, ?r) on the periphery of the milling head (3, 3a, 3b, 3c). The milling cutter (1) is particularly suited for machining light metals, especially for circular milling.
    Type: Grant
    Filed: November 16, 2004
    Date of Patent: December 25, 2007
    Assignee: Kennametal Inc.
    Inventors: Dirk Kammermeier, Peter Mergenthaler
  • Patent number: 7160064
    Abstract: The hole saw slug removal device is a device constructed to fit within a hole saw that provides for automatic ejection of waste slugs from within the hole saw. The hole saw slug removal device generally consists of two discs affixed on either end of a compression spring. The device is then inserted into the hole saw, and one disc retains the compression spring within the hole saw by locking onto the drill bit or against the inner surface of the hole saw. Upon operation of the hole saw, the spring compresses and the other disc is pushed down by the force of the sawing. After the sawing is completed, the spring decompresses, and the disc is pushed forward, automatically ejecting the waste slug that has become trapped within the hole saw. The slug removal device may lack one disc and instead be permanently affixed to a hole saw.
    Type: Grant
    Filed: April 6, 2004
    Date of Patent: January 9, 2007
    Inventor: Abelardo Jasso
  • Patent number: 7001116
    Abstract: A workpiece removal device 10 for a hole saw 8 includes a positioning member 12 joined to the hole saw 8, a first securing member 14 joined to the positioning member 12, a biasing member 16 having a first end 18 joined to the first securing member 14; a second securing member 20 joined to a second end 22 of the biasing member 16; and disposing the second securing member 20 in communication with a workpiece whereby a preselected portion of the workpiece is ultimately severed from the workpiece by the hole saw, whereupon, the biasing member forcibly removes the severed preselected portion of the workpiece from the hole saw.
    Type: Grant
    Filed: March 29, 2003
    Date of Patent: February 21, 2006
    Assignee: Eazypower Corporation
    Inventor: Burton Kozak
  • Patent number: 6857830
    Abstract: A roof core-drilling apparatus and drilling guide adapted to be used in combination with a rotary drive means in which the mandrel portion of the roof core-cutter operates not only to mechanically connect the saw body to the drive means for cutting the core, but also as a plunger for ejecting the core from the saw body when the drilling operation is completed. The core cutting guide provides a stable platform for guiding the roof core cutter during operation. The saw teeth on the outer edge of the saw body are angled to cut through the work material in such a manner as to facilitate the ejection of the core material from the saw body after the roof coring operation is complete.
    Type: Grant
    Filed: January 27, 2003
    Date of Patent: February 22, 2005
    Inventor: Robert C. Holcomb
  • Publication number: 20040146366
    Abstract: A roof core-drilling apparatus and drilling guide adapted to be used in combination with a rotary drive means in which the mandrel portion of the roof core-cutter operates not only to mechanically connect the saw body to the drive means for cutting the core, but also as a plunger for ejecting the core from the saw body when the drilling operation is completed. The core cutting guide provides a stable platform for guiding the roof core cutter during operation. The saw teeth on the outer edge of the saw body are angled to cut through the work material in such a manner as to facilitate the ejection of the core material from the saw body after the roof coring operation is complete.
    Type: Application
    Filed: January 27, 2003
    Publication date: July 29, 2004
    Inventor: Robert C. Holcomb
  • Publication number: 20040126194
    Abstract: The invention concerns a high-speed dry-process-machining tool (O) comprising a body (100) whereof one first end (110) includes material removing means (200) and the other end (120) is connected to a driver. The invention is characterized in that the end (110) including the material removing means (200) is provided with an orifice (111) opening onto an internal conduit (130) which, when set under negative pressure, evacuates by air displacement the shavings produced by said material removing means (200). The invention also concerns an electric broaching tool and a machine-tool equipped therewith. The invention is applicable to high-speed machining.
    Type: Application
    Filed: September 8, 2003
    Publication date: July 1, 2004
    Inventor: Claude Monsieur Fioroni
  • Patent number: 6705807
    Abstract: The hole saw assembly provides a structure and method for efficiently and securely connecting a hole saw to an arbor and easily connecting a pilot bit to the arbor. The arbor has a shank opposite the coupling end and a receiving slot proximate to the coupling end. The receiving slot is adapted to receive a mounting tag of the hole saw to couple the hole saw to the adapter body. The arbor also includes a selector sleeve slidably coupled to the body for movement between a first position allowing the receiving slot to receive the hole saw and a neutral position wherein the selector sleeve prevents removal of the hole saw mounting tab from the receiving slot.
    Type: Grant
    Filed: October 4, 2002
    Date of Patent: March 16, 2004
    Assignee: Black & Decker Inc.
    Inventors: Scott Rudolph, Robert D. Harris
  • Patent number: 6599063
    Abstract: A hole saw having efficient slug removal includes a saw cup, a shank portion, and a location drill. A plurality of cutting teeth are formed on an open end of the saw cup and the shank portion is attached to the other end of the saw cup. The location drill is retained in the shank portion. At least two inward cutting teeth are formed on an inside surface of the saw cup. The at least two inward cutting teeth may be two existing cutting teeth bent/formed inward, or at least two inward cutting teeth formed on an inside surface of the saw cup. The location drill is preferably modified such that the cutting diameter has a short length and the remainder of the length is relieved. A compression spring may be added to the hole saw to eject a slug.
    Type: Grant
    Filed: August 31, 2002
    Date of Patent: July 29, 2003
    Inventor: Richard E. Capstran
  • Patent number: 6409436
    Abstract: A plug ejecting hole saw includes a cylindrical saw cup provided with front cutting teeth, and an end wall having therethrough a non-circular concentric aperture; and an arbor holder removably attachable to a saw cup that includes a collar slidably holding a body including a nose piece, that has a cross-section which fits congruently within the aperture, and a pair of longitudinal grooves, which slidably hold locking tabs biased forward by springs to abut transverse ribs in the nose piece. The longitudinal grooves intersect a pair of transverse grooves blocked by the tabs. Inserting the nose piece into a cup aperture and pushing it forward causes each tab to be pushed rearward in a longitudinal groove, unblocking the transverse grooves and allowing the nose piece to be rotated relative to the saw cup, each tab springing forward to block a transverse groove and thereby lock the arbor holder to the sawcup.
    Type: Grant
    Filed: August 14, 2001
    Date of Patent: June 25, 2002
    Inventor: Roger J. Despres
  • Patent number: 5934845
    Abstract: A hole saw includes a mandrel having a central pilot drill bit having a tapered shank to facilitate removal of the plug and an annular cutting saw blade. A helical spring is preferred coaxially mounted between the saw blade and the pilot. The spring biases the plug as the hole is being cut and automatically ejects the plug from the saw. According to a presently preferred embodiment, the spring is a conically tapered helical compression spring. Additional embodiments of modified pilots are also provided wherein the pilot is stepped, fluted, bulged, stepped and fluted, tapered and bulged, tapered with a fluted bulge, and tapered with a fluted rectangular section. The hole saw of the invention is inexpensive to manufacture and easy to use. Depending on the choice of pilot and the material cut, the plug will automatically eject from the saw or will eject after tapping the saw.
    Type: Grant
    Filed: February 26, 1998
    Date of Patent: August 10, 1999
    Inventor: Henry E. Frey
  • Patent number: 5919010
    Abstract: An evacuated enclosure is provided around a circular cutter to collect the cutting dust produced while forming inspection apertures in insulation cladding. The enclosure includes an upper and lower coaxial chamber, the upper chamber provided with an air pump geared to a rotary shaft from a hand tool that also extends into the lower chamber. The hole cutter at the end of the shaft is then advanced through the insulation cladding by the advancement of the shaft through the cover, and the withdrawal stroke removes the cut pluc from the hale cutter while a spray of fixative is released into the enclosure. This fixative coats the loose strands on the plug exterior and also collects on the filter elements, to fix hazardous dust like asbestos from dispersal. The assembly may be combined with a portable power unit which may also include a vacuum device to augment the air draw across the filter.
    Type: Grant
    Filed: May 8, 1998
    Date of Patent: July 6, 1999
    Inventor: Roberto Fonseca
  • Patent number: 5816752
    Abstract: A slug removal system for a hole saw including a spring and a knock-out device are disclosed. The knock-out device has a bore longitudinally through its center to allow a drill bit, which acts as a guide for the hole saw, to pass therethrough. The knock-out device also has holes for two set screws, which secure the device to the hole saw. The knock-out device is tapered to avoid the blades of the saw, and is movably attached to the hole saw by the set screws. As the hole saw is used, the slug pushes the knock-out device back and compresses the spring, which is seated at the back of the hole saw. When the sawing is finished, the spring pushes the knock-out device forward, forcing the slug out of the hole saw.
    Type: Grant
    Filed: January 31, 1997
    Date of Patent: October 6, 1998
    Inventor: Darin L. Benjamin
  • Patent number: 5813802
    Abstract: A center drill used for machining a hole in a work piece which is adapted to be partially enclosed in a cup shape drill member in a side view thereof, includes a drill portion provided on a leading end of the center drill, and a dust extractor radially outwardly extending from a portion of the center drill which is enclosed in the cup shape drill member.
    Type: Grant
    Filed: November 27, 1996
    Date of Patent: September 29, 1998
    Assignee: House B.M. Co., Ltd.
    Inventors: Kunio Ajimi, Tsuneyoshi Ajimi
  • Patent number: 5715735
    Abstract: A workpiece ejector has an air actuator mounted within a lathe spindle for rotation therewith. The ejector actuator is controlled to extend its piston and piston rod to eject a workpiece from the lathe collet. A removable ejector nosepiece may be connected to the piston rod for movement into engagement with a workpiece held in the collet mechanism. Air under pressure is supplied to the air actuator at a first pressure to continuously press the nosepiece against the workpiece to seal the spindle assembly from contaminants, and at a second pressure to eject the workpiece. Controls are provide to sense whether a workpiece was properly ejected and to interrupt lathe operations if a workpiece was not properly ejected.
    Type: Grant
    Filed: January 22, 1996
    Date of Patent: February 10, 1998
    Assignee: First Tool Corporation
    Inventors: Richard M. Alden, Charles D. Allison
  • Patent number: 5632577
    Abstract: Drill for drilling rails and track rigs, in railroad applications, including a body which supports a motor driving a drilling tool through a reduction unit. Elements are provided for the translatory motion of the drilling tool with respect to the body. There are also elements for removably fixing the body with respect to the element to be drilled.
    Type: Grant
    Filed: October 2, 1995
    Date of Patent: May 27, 1997
    Assignee: Cembre S.p.A.
    Inventor: Ennio Peroni
  • Patent number: 5435672
    Abstract: A hole saw having plug ejection feature. Using the arbor and arbor nut of the present invention, the arbor of an ordinary commercially available hole saw is replaced, the arbor nut of the present invention being threaded into the hole saw cup axial threaded inlet, to convert the ordinary hole saw into a plug ejecting hole saw. The arbor and arbor nut of the plug ejecting hole saw of the present invention function as the arbor of an ordinary hole saw when used with to drill the desired hole, the drill turning in a clockwise direction. When the drill rotation is reversed to a counter clockwise direction and the hole saw cup is held stationary, the arbor of the present invention screws through the also stationary arbor nut, thereby ejecting the plug from the hole saw cup.
    Type: Grant
    Filed: August 5, 1994
    Date of Patent: July 25, 1995
    Assignee: Vermont American Corporation
    Inventors: Richard L. Hall, Donald M. Szymanski
  • Patent number: 5226762
    Abstract: A sealed, quick-disconnect, hole-saw arbor is disclosed for affixing a hole saw to a drill. The arbor enables a standard hole saw to be firmly "snugged up" to a shoulder on the arbor, and then rotated without being "backed off" the shoulder, in order to align drive holes in the hole saw with adjustable drive bosses on the arbor. In the preferred embodiments, the sealed hole-saw arbor produces a gravity-responsive, reversible, one-way lock effect on a threaded mounting sleeve. Letter indicators "T" and "L" on the arbor help the user position the arbor in a tighten or loosen position. Holding the arbor so that the "T" is upright, positions the arbor in the tighten position. The mounting sleeve is thereby secured against movement in a tighten direction and the hole saw is then threaded onto the sleeve and "snugged up" to the shoulder on the sleeve.
    Type: Grant
    Filed: August 6, 1992
    Date of Patent: July 13, 1993
    Inventor: Robert J. Ecker
  • Patent number: 5141368
    Abstract: A device and method are provided for side-drilling of catheters. The method comprises storing side-drilling hole patterns, selecting a side-drilling hole pattern, positioning the catheter at successive locations defined by the pattern, and drilling holes at the locations. The device carries out the method to side-drill catheters.
    Type: Grant
    Filed: March 20, 1990
    Date of Patent: August 25, 1992
    Assignee: Worldwide Medical Plastics Inc.
    Inventors: Gary C. Bullard, William J. Gahara
  • Patent number: 5096341
    Abstract: A hole saw and drive includes a cup-shaped saw body having a closed end and a plurality of cutting teeth. A left-hand threaded collar is secured to the closed end and defines one or more drive tabs extending into the saw body interior. A left-hand threaded mandrel is received within the threaded collar and includes a pilot drill and intermediate outwardly extending flange. An additional set of one or more drive tabs extend upwardly toward the threaded collar from the flange. The drive tabs cooperate to couple rotational power from the mandrel to the saw body. The left-hand threads on the mandrel and collar cooperate to permit the reverse rotational operation of the mandrel to expel a cutting plug from the saw body interior.
    Type: Grant
    Filed: May 2, 1988
    Date of Patent: March 17, 1992
    Inventor: Roger J. Despres
  • Patent number: 5087156
    Abstract: A printed circuit board boring machine bores printed circuit boards stacked on a table, by a drill while pressing the printed circuit boards with a pressure foot. A piece having a hole through which the drill may pass is detachably mounted on a tip end portion of the pressure foot with a center of the hole being aligned with an axis of the drill. The piece may be attached to the pressure foot before the boring work so that the boards and the piece may be simultaneously bored by the drill while the hole in the piece may be used as a guide for the boring work of the boards.
    Type: Grant
    Filed: November 30, 1990
    Date of Patent: February 11, 1992
    Assignee: Hitachi Seiko Ltd.
    Inventors: Yasuhiko Kanaya, Tamio Otani, Kunio Arai
  • Patent number: 5082403
    Abstract: In one embodiment, the bodies of the mandrel and the drill have radially opposing portions thereof which are threadedly engaged about the axis of the drill. Through bores in the respective body portions make it possible to latch the drill to the mandrel for the drilling operation, using a pin that is inserted through the bores, and then when the drilling operation is completed, withdrawn from the bores to enable the core of work material to be ejected from the drill by advancing the mandrel on the threading while the drill is restrained against rotation. In other embodiments, the bodies of the mandrel and the drill have axially opposing portions thereof which are equipped with raised steps on the axially opposing faces thereof. The steps enable the drill to be latched to the mandrel for the drilling operation by engaging the faces of the body portions with one another so that the steps abut in one axial plane of the drill.
    Type: Grant
    Filed: April 22, 1991
    Date of Patent: January 21, 1992
    Inventors: James L. Sutton, Stephen H. Van Valkenburg
  • Patent number: 5076741
    Abstract: The subject holesaw is similar to conventional holesaws. However, it has no shoulder stop on the mandrel and extended threads on the mandrel so that after a hole is cut the clutch is moved well away from the saw, the saw is held from rotating and the mandrel is threaded further into it so that its end ejects the plug.
    Type: Grant
    Filed: November 13, 1990
    Date of Patent: December 31, 1991
    Inventor: James M. Littlehorn
  • Patent number: 5046301
    Abstract: The asbestos bulk extractor includes, in a preferred embodiment, an elongated housing having a handle section normal thereto. The housing defines an interior chamber and the handle defines a through port between the chamber and a vacuum line. At one end of the housing, a transparent, rigid hood is removably attached which defines an extraction region. A coring tube is rotatably and longitudinally retained within the housing and extends beyond both ends of the housing. The coring tube has a coring end which bores into the asbestos containing material. The other end of the coring tube is manually operable such that the tube can be rotated and forced into the asbestos containing material. An extraction push piece is movably mounted within the coring tube. After the coring tube has bored into the asbestos containing material, the coring tube is withdrawn from the extraction site and the core sample held within the coring end of the tube is pushed from the tube by the push piece into a vial.
    Type: Grant
    Filed: January 8, 1990
    Date of Patent: September 10, 1991
    Inventor: Wayman L. Adkins
  • Patent number: 5036574
    Abstract: A multiple piercing apparatus for piercing a workpiece having a plurality of reference marks defining the piercing locations. A plurality of adjustably movable piercing unit cases are opposedly arranged on opposite sides of a machine bed. A piercing element, such as a twist drill or punching assembly, is mounted for movement with respect to the unit case to be aligned with a respective reference mark in response to data received from a sensor, such as a camera or photo-sensor.
    Type: Grant
    Filed: October 31, 1989
    Date of Patent: August 6, 1991
    Assignee: Ushio Co., Ltd.
    Inventor: Masakazu Kakimoto
  • Patent number: 5035548
    Abstract: A flanged irregular bushing is fitted through a corresponding irregular hole in the base of a conventional hole saw and supports a cylindrical shank which extends from the back of the hole saw. Either the bushing or the shank is internally threaded with right hand leading threads. A collar is free to reciprocate on the shank and has pins projecting through corresponding holes through the base of the hole saw into the cup of the saw. The distance by which the pins extend into the cup of the hole saw depends upon the location of the collar on the shank. When the collar is positioned away from the base of the hole saw the pins extend only a short distance into the cup of the saw, permitting the mandrel to be threaded deeply into the saw with the fingers on the end of the saw close to the saw base.
    Type: Grant
    Filed: October 31, 1990
    Date of Patent: July 30, 1991
    Inventor: Joseph A. Pidgeon
  • Patent number: 5017057
    Abstract: An apparatus for drilling a circularly curved hole in a workpiece, following a curved path around an arc includes a support, shaped to rest against the workpiece, a chassis mounted to the support on a pivot axis defining a center of the curved path, and a drilling bit. The drilling bit is disposed on the distal end of a shaft which is likewise curved around the path, and is provided with a power transmission section connected to the drilling bit and disposed along the arc, coaxial with the pivot axis of the chassis. An electric motor or electric hand drill with chuck is used to apply power to the power transmission section, while manually forcing the chassis around the pivot axis, thereby moving the drilling bit along the path. The support can be adjustable to span and/or clamp on the workpiece. The power transmission section can include an internal or external member carrying power along a fixed tube or shaft respectively.
    Type: Grant
    Filed: September 5, 1989
    Date of Patent: May 21, 1991
    Assignee: Ronald J. Harms
    Inventor: Tom F. Kryger
  • Patent number: 4932117
    Abstract: The invention is directed to a method and apparatus for selectively and simultaneously drilling a plurality of holes in thin panels such as printed circuit boards, while providing for automatic changing of the drill bits, individually or plurally, as required. A tray of drill bits is driveable in X and a row of vacuum pickers are driveable in Y, so that the various bit locations of the tray are addressable by such X-Y positioning, and selectable vacuum pickers are extensible and retractable so as to pick and place the drill bits at various matrix locations of the tray. The vacuum pickers also are extensible and retractable through corresponding tray openings in order to deliver replacement bits to, and retrieve used bits from, a flipper assembly associated with each drilling module.
    Type: Grant
    Filed: March 7, 1988
    Date of Patent: June 12, 1990
    Assignee: Micromation Systems, Inc.
    Inventors: Herbert M. Reed, Scott J. Sager, Alexander Grebenyuk, Stephen F. Torchia
  • Patent number: 4913599
    Abstract: A drill (10) for flexographic plates and negatives includes a table (15) movable in a Y direction under a drill bar (30), and a pin bar (25) movable in an X direction on the table so that negatives can be supported on the table, moved to an appropriate positon underneath the drill bar, and held in place by clamping the table and the pin bar. Drill bar (30) moves up and down and rotates a linear array of hollow spindles (35) holding hollow drill bits (40) for boring a suitable array of holes. The same array bored in the negatives is then bored in a flexographic plate corresponding to each negative, and these are pinned together while the plates are imaged. Drill (10) includes slug rods (32) extending downward through spindles (35) and bits (40) to push out drilled slugs when the drill bar raises. The spindles are preferably rotated by a drive chain (55).
    Type: Grant
    Filed: April 8, 1988
    Date of Patent: April 3, 1990
    Assignee: Adflex Corporation
    Inventor: Joseph A. Andolora
  • Patent number: 4909681
    Abstract: A router for separating individual component mounted printed circuit boards from a panel consists of a routing machine and programmed control console which controls movement of a spindle assemblage in the routing machine in the Z direction and a table carrying the panel in the X and Y directions. A pressure foot housing, which encompasses the rotatable spindle nose of the spindle assemblage, has a rectangular brush at its end which presses against the panel to be cut by a routing bit. A vacuum exhaust system is attached to an angled port in the housing. The geometry of the housing area causes a vortex to be produced which sucks up all debris cut by the routing bit to the port to be exhausted from the housing.
    Type: Grant
    Filed: November 1, 1988
    Date of Patent: March 20, 1990
    Assignee: Cybernetics Products, Inc.
    Inventor: Joseph P. Drier, Jr.