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Class 408/209 - And central lead


Subclass of Class 408 - Cutting by use of rotating axially moving tool
Definition: Device including a work-engaging protuberance, concentric
No. of patents: 49
Last issue date: 07/24/2007


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NumberTitleIssue Date
7246975Hole saw with replaceable cutting tip
A device for cutting a hole, such as in sheet metal is provided. The device includes an axially rotatably cylindrical body that is operable with a rotatable drive. A distal end portion of the body includes a replaceable cutting tip and a replaceable pilot. The cutti...
07/24/2007
6929430Pipe fitting removal tool
A method and tool are disclosed for removing a plastic water closet flange from the waste pipe to which it is attached so that a new flange may be chemically bonded to the existing waste pipe. A preferred embodiment of the water closet flange removal tool includes a...
08/16/2005
6705807Hole saw and connection method
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. T...
03/16/2004
6676343Hole enlarging bit for power drills
A drill bit 10 for creating and using a pilot hole 101 in a workpiece 100 to produce a finished hole 102 in the workpiece 100 centered around the pilot hole 101 wherein the drill bit 10 includes an enlarged cutting head member 30 mounted in a concentric r...
01/13/2004
6375396Hole cutting tool with drill pilot
A rotary cutting tool has an axially moveable drill pilot supported in the forward end of an arbor. A first set screw connects the arbor to an annular hole cutter. A second set screw connects the arbor to the drill pilot. The drill pilot has an integral c...
04/23/2002
6341925Plug ejecting hole saw with twist-locking interchangeable saw cups
A plug ejecting hole saw includes a saw cup provided at a front annular edge wall thereof with a plurality of forward protruding angled cutting teeth, and having at a rear end thereof a circular base wall having therethrough a non-circular aperture concen...
01/29/2002
6179615Dental drill with integral guide
A drill particularly suited for drilling holes for dental anchors. The drill has a central shaft including a proximal end having conventional connection structure for attachment to a powered rotatable appliance and a distal end bearing a forwardly project...
01/30/2001
6120220Rotary cutting tool
A cutting tool assembly which is adapted for use in combination with a drill for cutting a hole in a work piece. The assembly includes a u-shaped blade and a mandrel assembly for fixing the blade to the drill, a dust shield which surrounds the blade and a...
09/19/2000
6120221Holesaw
A holesaw includes an arbor for supporting a pilot drill and a bell-shaped sawblade. The sawblade is attached to a lower threaded portion of the arbor. A pin support with at least one pin engages the top of the holesaw blade and is axially movable but not...
09/19/2000
6065909Drill bit assembly with an adjustable hole saw
A multi-function drill bit assembly with slideably positionable hole saw comprising an elongate bit member, a reversible arbor member, and a hole saw member. The elongate drill bit member has a drilling portion and an attachment portion, with the drilling...
05/23/2000
5967709Adaptor for rotating tools
An adaptor for stable mounting of a rotating tool in a drilling machine is disclosed, said adaptor comprising a continuous shaft (1), provided in one end with means (2) for fastening in a drilling machine and in the other end with a thread (3) for mountin...
10/19/1999
5865834Coring reamer
A coring reamer for use in removing a bone core for use in a graft. A cylindrical tunnel is aimed at a bone. The coring reamer is inserted through the cylindrical tunnel and operated to form a bone tunnel. The bone core is removed from the coring reamer a...
02/02/1999
5829929Long bit hole saw arbor
A new long bit hole saw arbor for allowing a user to drill a hole in a material using readily available EMT conduit as a cutting saw member. The inventive device includes an arbor member, an attachment shank extending from the arbor member to permit mount...
11/03/1998
5820315Hole saw roller guide
A shaft sized to fit conventional hole saw mandrels has two set screw flats and a retaining head. A cylindrical roller is mounted on the shaft against the retaining head, and a cylindrical spacer is mounted by set screws on the shaft above the roller. The...
10/13/1998
5782636Bone contouring tool
A bone contouring tool for removing bony tissue surrounding an implanted dental implant and having an elongated shank with a blade and a pilot pin disposed at one end. The pilot pin extends downwardly from the blade and provides guidance during removal of...
07/21/1998
5658102Hole saw arbor method and apparatus
A hole saw arbor includes an arbor body defining an axial rotation axis and has, at one end, a shank for mounting to a drill chuck, and at the other end, a hole saw receiving, axially directed, threaded shaft. The arbor includes a thrust member coaxially ...
08/19/1997
5632747Bone dowel cutter
A device is provided for cutting dowels from a bone mass which is easily disassembled for cleaning and sterilization. The dowel cutter includes an axial mounting member having a proximal end portion configured for engagement with a drill chuck and a dista...
05/27/1997
5626445Tube cutter tool and method of use for coupon removal
A tube cutter tool is insertable into a tube for cutting a coupon from a damaged site on the exterior of the tube. Prior to using the tool, the damaged site is first located from the interior of the tube using a multi-coil pancake eddy current test probe....
05/06/1997
5413437Double-sided hole saw
A double arbor has a shaft with a slideable first arbor at one end and a fixed second arbor at the other. A first hole saw of the already-cut, incorrect diameter is mounted on the first arbor. A second hole saw which is the size of the desired diameter ho...
05/09/1995
5316418Hole cutter
This disclosure relates to a hole cutter comprising a spindle having a rearward end shaped to be engaged and rotated by a drive machine, the spindle further having a front end and an axial center bore. A cylindrical blade is attached to the front end of t...
05/31/1994
5246317Quick-release arbor for hole saws
Quick-release arbor for hole saws has a generally cylindrical shaft with a threaded end portion for a screw-fitted connection to the threaded bore of a hole saw. A collar is disposed about the shaft, includes a shank, at one end, adapted for connection to...
09/21/1993
5226762Sealed hole-saw arbor
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 a...
07/13/1993
5160225Structure of a self-drilling threaded insert for use on drywall
A threaded insert for drywall with a structure comprises a cylindrical body which includes an axial entrance hole at one end, an axial cavity at the other end, a high auger disposed thereon, a low thread disposed between the auger, a pair of drilling bits...
11/03/1992
5154552Quick-release arbor for hole saws
Quick-release arbor for hole saws has a generally cylindrical shaft with a threaded end portion for a screw-fitted connection to the threaded bore of a hole saw. A collar is disposed about the shaft, includes a shank, at one end, adapted for connection to...
10/13/1992
5108235Hole saw arbor
A hole saw arbor assembly connectable to a source of torque comprises an arbor having a first end and a second end. A power tool mount is disposed on the first end, and threads are disposed on the second end of a construction capable of mounting a hole sa...
04/28/1992
5096341Hole saw and drive
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 threade...
03/17/1992
5082403Core-drilling apparatus with mandrel driver-ejector
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 f...
01/21/1992
5074722Hole cutter
A rotary cutting devbice for cutting holes in a workpiece and a method of making a rotary cutting device. The method includes machining a notch across a face of a generally cylindrical body. The body has a longitudinally extending central axis and a centr...
12/24/1991
5062748Shank structure for annular hole cutter
A shank structure for holding an annular hole cutter used for drilling a large circular hole, comprising a hollow cylindrical body, a center drill inserted in the inner cavity of the body and clutch means for inhibiting and allowing relative motion betwee...
11/05/1991
5061126Hole saw and mandrel assembly
A one piece hole saw assembly with mandrel permanently affixed to the hole saw cup. The mandrel contains a hollow shaft, a locking flange and reinforcing flange which are integrally formed as by machining. The locking flange of the mandrel mates with a lo...
10/29/1991
5049010Metal cutting tool
A metal cutting tool is disclosed which includes a cylindrical cutting body (12) having an outer cylindrical surface (13) approximating the size of the hole desired and an inner wall (14) which tapers towards a base (15). The cutter body further includes ...
09/17/1991
5013193Closet flange reboring tool
A plastic closet flange reboring tool having an elongated arbor, a cutting member and two exchangeable non-circular guide members. The arbor having a first end structured of a D-shaped threaded extension, and a second end structured for releasable connect...
05/07/1991
5007777Hole saw
A gap for allowing the cutting chips to escape is formed between the hole saw side wall and the workpiece in order to enhance the piercing efficiency. This hole saw comprises a drill part for determining the center of piercing with respect to the workpiec...
04/16/1991
4992009Sheet metal drill bit
A sheet metal drill bit for drilling burrless round holes in thin products. The drill bit is formed by a solid drill body having a drill head and a connecting shaft. The drill head has two diagonally opposed outer cutting edges in a front face thereof eac...
02/12/1991
4968189Hole saw driver-extruder and hole enlarger
A device is disclosed for driving conventional hole saws and for extruding sawed material from within said saws after sawing. An internally right hand threaded shank is attached to the outer base end of a conventional hole saw. A cooperating mandrel is th...
11/06/1990
4830548Method and apparatus for cutting
A cutting tool assembly including an elongated pilot holder and a cutter blade adapted to be transversely positioned in a transverse slot in the pilot holder. The cutter blade includes cutting edges along one transverse edge of the blade and notches in th...
05/16/1989
4798503Tenon forming tool
A tenon forming tool which is an attachment for a powered hand drill....
01/17/1989
4749315Tool for cutting a hole in a construction material precisely concentric to a reference aperture
A tool is provided for drilling a hole in a construction material precisely concentric to a nearly inaccessible reference aperture situated opposite the side of the construction material from which the hole must be cut. A typical application is in cutting...
06/07/1988
4741651Hole saw
An improved hole saw is disclosed. A mandrel of the hole saw forms an elongated threaded body. The mandrel, at a first end forms a shank adapted to be secured in the chuck of a hand power drill or drill press. The second end of the mandrel forms an enlarg...
05/03/1988
4652185Hole saws
A device for removing waste plugs from hole saws comprising a plug member positioned internally of a hole saw and retained therein by means of screws or other projections which extend outwardly through cleanout slots of the hole saw. The projections may b...
03/24/1987
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