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7611312 |
Core cutter
A core cutter comprises a cylindrical base, a plurality of cutting portions provided at a tip end of the base, discharge grooves configured to discharge chips cut by the cutting portions, and an...
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7559726 |
Drill plug ejection system
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...
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7556459 |
Hole saw having a drill bit with a pilot tip
A hole saw has an arbor and a cup shaped cutting member. The cup shaped cutting member has an annular skirt with a plurality of teeth at its free end. A drill bit is secured on the arbor. The drill...
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7384222 |
Hole saw
A hole saw includes a shaft, a hole-cutter and an adjustable outer cutter unit. The shaft has a bottom coupling hole for receiving a pilot drill, a top coupling rod for fastening to a driving tool,...
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7305746 |
System for removing heat transfer fins from, and beveling the ends of, boiler tubes
A system is disclosed to use a first rotary milling head to break or cut the bond of a heat transfer fin base to a boiler tube, thereby removing the heat transfer fins from the boiler tube, and a...
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7246975 |
Hole 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...
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7189036 |
Coring bit
A coring bit provides easy core removal by utilizing a series of lateral blades which extend from the top cutting surface to the base of the bit. The lateral blades and inner faces of the coring...
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6948574 |
Ultrasonic annular core bit
A core bit for abrasive cutting including a cylindrical tube ( 3 ) provided at its end surface with cutting or abrasive bodies ( 2 ) and a cover ( 4 ) provided at an opposite end surface of the...
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6939092 |
Sheet metal hole cutter
A sheet metal hole cutter has a cap plate defining a substantially circular peripheral groove and an annular shelf extending radially outwardly from the peripheral groove. An elongated band forming...
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6893194 |
Workman's tool for accessing cavities
A tool assembly comprising a cylindrical hole saw having an annular cutting surface and at least one rebate blade positioned adjacent to the exterior sidewall of the hole saw having a cutting...
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6866032 |
Tool and method for preparing a block for receiving an electrical receptacle
The present invention is directed to a coring drill and method for preparing a block for containing a receptacle assembly. The coring drill comprises a generally cylindrically-shaped corer hub...
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6857831 |
I-joist hole cutting apparatus
A hole saw for cutting standardized holes in the web portion of an I-joist features a light weight three spoke body having a rim with continuous circumference and three inserted cutting blades...
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6599063 |
Hole saw having efficient slug removal
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...
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6588992 |
Hole saw
A hole saw having a cylindrical shape includes a plurality of repetitive groups of saw teeth. The repetitive groups include a first inboard set tooth and a first outboard set tooth. The inboard set...
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6514017 |
Core drill piloting system
A pilot tool assembly for a core drill comprises a pilot tool unit that fits within the core drill and expandable means engagable with the interior surface of the core drill for releasably locking...
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6487947 |
Device for reaming pipe
A reaming device for reaming a pipe, which may have electrical wires passed therethrough, is attachable to a power tool, has at least one reaming blade thereon, and is adapted to receive at least...
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6375396 |
Hole 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...
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6357973 |
Connection device of boring saw
A connection device is, designed to connect a boring saw to a rotating tool and is formed of a shaft, a locating member, a sleeve, and a nut. The shaft is provided with a shaft hole to receive a...
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6280123 |
Self-adhering drill and cutter
The present invention is a low profile self-adhering drill having a feed mechanism having an axis of rotation, which is generally perpendicular to the axis of rotation of the drill motor. The feed...
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6206616 |
Tool and method for cutting a circular opening and retaining the cut portion
A tool and method for cutting a circular opening and retaining the cut portion. The tool comprises a shaft having at least one cutting thread and at least one tapping thread, or at least one...
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6196908 |
Drill for composite materials
A diamond coated drill capable of drilling large holes in composite materials and then reaming the holes to their correct size includes a pair of prongs extending from a shank. Each of the prongs...
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6158324 |
Saw blade and method for its production
A saw blade comprising a basic body (8) lying in a longitudinal center plane (9) and having an edge and including along its edge a group (6) of recurring teeth (1, 2, 3, . . . ), the group (6)...
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6123490 |
Apparatus for machining round holes
A trepanning tool for making holes having a plurality of tool insert holders with pockets wherein replaceable carbide tool inserts are secured by retaining screws, the inserts being positioned so...
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6120221 |
Holesaw
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...
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6120220 |
Rotary 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...
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6099214 |
Cutter for use in forming dowels, plugs, and tenons
A cutter for use in fabricating dowels, plugs, or tenons has a hex-shaped shank and a body portion. The body portion includes a spur which may be carbide and is the first part of the cutter to...
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6065909 |
Drill 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...
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6015248 |
Wood corer device
A wood coring drill bit comprising a hollow tube having an internal bore (103) and an exterior (100) with equally spaced bodies (10) of substantially uniform width extending in a helical manner...
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6007279 |
Chipper-toothed hole saw
A hole-cutting device for attachment to a portable electric drill or similar rotating machine. The device has a cylindrical body with a rearward edge and a forward edge; a mounting plate is affixed...
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5944460 |
Annular hole cutter
The present invention discloses an annular hole cutter particularly useful for cutting railroad rails. Railroad rails are extremely hard and normally require drills or cutters which have carbide...
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5931614 |
Annular bit having a center drill
An annular bit (1) having an attachable center drill (6) is proposed, in which annular bit (1), on the one hand, reliable holding of the center drill (6) in the annular bit (1) is ensured and, in...
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5810524 |
Plug cutter with radial relief
A plug cutter has a main body portion having a longitudinal axis, shank portion extending axially from one end of the main body, and a plurality of blades extending axially from an opposite end of...
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5803678 |
Hole cutting tools
An improved hole saw for cutting holes having a cylindrical shape that includes, along its cutting edge, a plurality of repetitive groups of saw teeth having at least four radially displaced...
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5800148 |
Blind-taper hole saw
A rotary tool for forming a blind-tapered hole in a workpiece includes an elongate shaft having a bit shank on one end and a base plate secured to the other end. A collar, mounted for axial...
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5791837 |
Annular tool for cutting holes in metal
A tool for cutting holes in metal provides a shank defining at one end an arbor releasably carrying a circularly annular cutter that defines teeth at each cutter end which may be sequentially used...
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5676501 |
Drill bit tube
A drill bit includes a one-piece cylindrical drill bit tube having a longitudinal axis and defining cylindrical surfaces including an inner cylindrical surface and an outer cylindrical surface. At...
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5624213 |
Hole producing assembly
A hole producing assembly for a power drill including an adapter having one end operationally connected to the power drill such that the power drill rotates the adapter about an axis of rotation,...
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5615981 |
Forming threaded holes
A threaded hole may be formed in a lid of an underground petrol tank without emptying the tank or removing the lid, using a tool (FIG. 3) having a taper tap section (61), an intermediate tap...
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5466099 |
Cutter shell for forming holes of improved cylindricality
A cutter shell for cutting a circular opening in a metal object formed of a tubular boring portion and a head portion. The boring portion has a tubular sidewall and teeth at the forward...
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5458444 |
Apparatus for cutting a hole
Apparatus for cutting a smooth concentric hole in a metal workpiece. The apparatus fits in a standard industrial drill chuck and has a pilot drill and tap at one end which drills and taps a pilot...
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5433560 |
Apparatus for drilling holes in a workpiece
A hole cutting apparatus for use with a conventional drill and chuck. The apparatus features a self feed pilot bit and quick change drill bits which store on the apparatus. Hollow drill bits are...
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5281060 |
Annular hole cutter
An annular hole cutter including a cylindrical body provided with a plurality of circumferentially spaced apart cutter teeth, including a first group of cutter teeth that have alternate radial...
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5240357 |
Annular hole cutter
An improved annular hole cutter is disclosed that has a plurality of alternately arranged first and second cutting teeth positioned at substantially equally spaced intervals about the distal end of...
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5217334 |
Annular hole cutter
An annular hole cutter has a radially inner cutting tooth portion and a radially outer cutting tooth portion. Each of the inner and outer cutting tooth portions is formed with a flute for ejecting...
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5174696 |
Plug-in holder for centering drill bit
A plug-in holder (2) of a drilling tool has an axially extending central bore for receiving a centering drilling bit. The holder (2) has an opening (5) extending from the bore to its outer surface....
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5145296 |
Apparatus and method for cutting holes
An annular hole cutter wherein each tooth is formed with a radially outer cutting edge and at least alternate teeth are formed with radially extending, circumferentially staggered inner and outer...
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5135532 |
Drill head assembly for cranial perforators
A drill head assembly for a cranial perforator, which assembly is similar to the drill head assembly disclosed in U.S. Pat. No. 4,884,571, except that the configuration of the axially-projecting...
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5076311 |
Directly installed shut-off valve assembly for flowing high pressure line
An apparatus for installing a reopenable shut-off valve into a flowing high pressure pipe, such as the production pipe in an uncontrolled flowing well, utilizes a cylindrical outer saddle member...
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5062748 |
Shank 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...
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5061126 |
Hole 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...
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