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| Number | Title | Issue Date |
| 7237992 | Process of machining scroll member by using non-rotary cutting tool A process of machining a scroll member of a scroll compressor by using a non-rotary cutting tool. The non-rotary cutting tool is moved relative to a workpiece in a predetermined direction for cutting the workpiece, with its rake face being held substantially perpend... | 07/03/2007 |
| 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 bit are biased to provide a conical shape to the core thus permitting t... | 03/13/2007 |
| 6908264 | Quick change drill bit A quick-change core drill includes an adapter and a generally tubular drill barrel. The adapter comprises a first end adapted to be removably connected to a drill spindle and a second end adapted to be removably connected to the drill barrel. The drill barrel includ... | 06/21/2005 |
| 6273652 | Plug cutter with radial relief and plug ejecting portion A plug cutter is described that is rotatable about an axis of rotation. the plug cutter has a main body having a longitudinal axis coinciding with the axis of rotation. The main body defines a bore extending axially therein. A shank extends axially from o... | 08/14/2001 |
| 5681134 | Device for cutting frustoconical plugs from a board A device for cutting truncated dowels from a board, with a device including a one-piece cutting body shaped as a hollow cylinder and having a concentric clamping shank. The cutting body is provided with only one recess which forms a knife edge, with the r... | 10/28/1997 |
| 5433121 | Center core extracting drill bit A core extracting drill bit is provided including an elongated hollow body including a forward cutting end and a second rearward rotary torque input end. The body defines a central chamber therein opening forwardly outwardly through the forward cutting en... | 07/18/1995 |
| 5304020 | Cutting tool for making cylindrical bores A cutting tool for making cylindrical bores includes two or More cutting inserts and radially or approximately radially directed blades which leave an uncut core, as well as chip removal devices extending in the axial direction of the tool. The cutting to... | 04/19/1994 |
| 5098234 | Hollow drill for fabric and the like A hollow drill for fabric and the like is comprised of a hollow shaft having highly polished inside and outside surfaces and an outside diameter of preferably not more than 0.130 inches. A tip having a larger outside diameter and smaller inside diameter i... | 03/24/1992 |
| 5054971 | Apparatus for removing damaged portions of rubber components The present invention refers to an apparatus for removing damaged portions of rubber components, in particular of steel-braced radial-ply tyres, including a driven and rotating tool. The tool (1) consists of a sleeve whose wall thickness tapers like a kni... | 10/08/1991 |
| 5049010 | Metal 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 |
| 4693641 | End mill with throw-away tip An end mill comprises an end mill body and a throw-away tip mounted on a forward end of the end mill body so as to be spaced from an axis thereof. A core receiving recess is formed at a center of a forward end face of the end mill body and has a size equa... | 09/15/1987 |
| 4652185 | Hole 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 |
| 4632611 | Paper drill A drill for a paper drilling machine. The drill is made of two separate parts, namely a cutting bit of hollow generally cylindrical form having an annular cutting edge at one end, and a hollow cylindrical sleeve which receives the opposite end portion of ... | 12/30/1986 |
| 4616964 | Carbide drill At the top surface of a drill head, one or two tips are fixed radially with a little clearance from the axis of rotation, and thereby a nonmachining zone is formed around the axis of rotation. Each tip has its cutting edge formed projectingly from the rad... | 10/14/1986 |
| 4595321 | Plug cutter A woodworking tool for cutting plugs including a generally cylindrical, hollow bit having its working end open and of a wall thickness tapering from the working end, the wall having a through opening on one side spaced from the working end and a longitudi... | 06/17/1986 |
| 4589807 | Hole production tool Apparatus for cutting a circular hole in a workpiece having relatively low compression strength, including a hollow cylindrical drill having, at its outer terminal end, an annular cutting edge of a predetermined diameter for cutting a hole in the object. ... | 05/20/1986 |
| 4373839 | Drill bit A drill bit comprises a body having a shank portion and an end face at its forward end. The drill bit body has at the forward end a cutting means having at least one cutting edge provided on the end face. The cutting edge is spaced from the axis of rotati... | 02/15/1983 |
| 4351349 | Pipe repair kit apparatus and method Apparatus and methods facilitating isolation of a pipe segment for repair thereof include releasable reclosable means for gripping the pipe exterior, a first conduit extending through the releasable gripping means transverse to the pipe when the releasabl... | 09/28/1982 |
| 4256421 | Self-threading nut This invention relates to a self-threading nut which is utilized to hold a replacement shock absorber within the cylinder housing of a vehicular suspension system commonly referred to as a MacPherson strut suspension system. The nut includes a generally c... | 03/17/1981 |
| 4201502 | Method and apparatus for tap hole reaming A pouring ladle is mounted on a carriage which is movable along a track by a motor drive coupled thereto through an overrunning clutch. Movement of the carriage along the track is interrupted at a predetermined position to align the tap hole of the ladle ... | 05/06/1980 |
| 4177867 | Self-drilling dowel with an inclined rolling head A self-drilling dowel consists of a tubular-shaped member with a drilling head at one end. The drilling head is formed of a plurality of teeth each having a tip. The tip of the teeth are all disposed in a single plane inclined at an angle to the axis of t... | 12/11/1979 |
| 3954347 | Drilling machine An improved drilling machine for cutting holes for knobs and latches in metal-clad doors comprises a supporting framework for the door and a hollow drill arranged to be moved upward from the underside of the door to cut the knob opening. The drill is holl... | 05/04/1976 |
