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| Number | Title | Issue Date |
| 7625292 | Combination tool with front-face recess A tool for producing a thread such as an internal thread, can include at least one cutting region having at least one cutting edge and at least one thread-forming region. In general, the cutting region(s) and the thread-forming region(s) are coupled or connected to ... | 12/01/2009 |
| 7419339 | Drill thread milling cutter The invention relates to a drill thread milling cutter (1) for producing a bore and for the subsequent milling of a thread in the bore, said drill thread milling cutter (1) having a working region (2), on the circumference (3) of which a ... | 09/02/2008 |
| 7399231 | Tool and method for producing a thread in a tool The tool for producing a screw thread in a workpiece comprises a) at least one thread-producing region, which comprises a1) at least one thread-milling region, which operates by removing material, as well as a2) at least one th... | 07/15/2008 |
| 7357606 | Self-advancing step-tap tool Methods and tool for simultaneously forming a bore in a work piece and forming a series of threads in said bore. In an embodiment, the tool has a predetermined axial length, a proximal end, and a distal end, said tool comprising: a shank located at said proximal end... | 04/15/2008 |
| 7226250 | Tool and method for forming a lug hole A single tool that provides multiple machining operations for forming a lug hole through a vehicle wheel hub includes an end portion having a first diameter and a mid-portion having a second diameter that is greater than the first diameter. A spade drill bit is moun... | 06/05/2007 |
| 7214009 | Drilling tool A drilling tool consisting of a drill shank having a drill point and of a transition section which adjoins the drill shank in the axial direction and which merges into a clamping shank, the transition section being heat-treated in such a way that it has higher bendi... | 05/08/2007 |
| 7140825 | Self tapping bolt A self tapping bolt which fastens a mounting member and a receiving member while the bolt cuts internal threads on an inner surface of a tap drill hole prepared in the receiving member. The bolt includes at least one groove formed near an end of a threaded portion o... | 11/28/2006 |
| 7114891 | Thread forming tool with annular ridge A thread forming tool includes an elongated body defining a longitudinal center axis. The body including a thread forming portion formed by one or more annular ridges oriented perpendicular to the axis. The body has a non-circular shape in a cross sectional plane or... | 10/03/2006 |
| 7107664 | Screw thread cutting apparatus and method A thread cutting milling tool comprises a shank with a working portion formed with a recess for receiving a thread cutting insert. The thread cutting insert has one edge formed with a line of thread-form teeth of identical profile. The thread cutting teeth project l... | 09/19/2006 |
| 7044692 | Screw thread cutting apparatus and method A thread cutting milling tool comprises a shank with a working portion formed with a recess for receiving a thread cutting insert. The thread cutting insert has one edge formed with a line of thread-form teeth of identical profile. The thread cutting teeth project l... | 05/16/2006 |
| 6921236 | Tool for repairing damaged threads A tool for rethreading a damaged threaded object having a solid body with at least one through bore including at least one cutting tooth. A slot intersects the through bore, allowing relief for shavings removed from the object as it is rethreaded. The tool can be ad... | 07/26/2005 |
| 6231281 | Thread milling cutter with drilling edges A thread milling cutter with drill blade has a drill blade 6 at the leading end of a land 5 divided by grooves 3 and a tapered tapping blade 7 provided behind the drill blade, with the upper end thereof in the direction of rotation projecting outward beyo... | 05/15/2001 |
| 6176653 | Electrical fitting tap An electrical fitting tap for retapping the hollow interior edge of a junction box or the like comprising a unit having two milled taps that are opposed and concentrically aligned at a joint provided with four opposing holes within which a cheater bar can... | 01/23/2001 |
| 5944462 | Hole cutting tool for chamfering and grooving A hole cutting tool for holemaking, chamfering, grooving, threading and/or O-ring grooving. The tool is a rotary tool for holemaking in a workpiece which includes one or more holemaking inserts about the outermost end of the tool, at least a pair of axial... | 08/31/1999 |
| 5902079 | Combination die and tap A thread cutting tool is provided to simultaneously cut opposed concentric screw threads on a connector member. The tool comprises a cylindrical body with radially spaced first and second thread cutting sections and is adapted to cut threads in soft mater... | 05/11/1999 |
| 5871403 | Method and apparatus for producing dual synchronized threads Method and apparatus are disclosed for forming dual synchronized threads on the interior and exterior cylindrical portions of a tube or pipe, and in the inner and outer cylindrical surfaces of an annular channel formed in an object. The method for produci... | 02/16/1999 |
| 5733078 | Drilling and threading tool A drilling and thread-milling tool for generating an internal thread in a workpiece, including a proximal shank portion attachable to a driving device for rotating the tool about a rotation axis thereof, and a distal cutting portion rotated with the shank... | 03/31/1998 |
| 5678962 | Integral boring and threading tool and method A unitary bore forming and threading tool for producing a variety threaded bores having chamfers and counterbores without a need for tool changes. The improved took preferably includes a shaft of predetermined axial length and having proximal and distal e... | 10/21/1997 |
| 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 section (62) and a final tap section (63). At the leading end of... | 04/01/1997 |
| 5429459 | Method of and apparatus for thread mill drilling A threaded hole (20) in a workpiece (22) is formed by rapidly spinning an elongated tool (24) having a drill point (64) at one end, at least one longitudinally extending flute (80) having thread milling faces (84) for milling the thread to be formed, and ... | 07/04/1995 |
| 5413438 | Combined hole making and threading tool A combination tool is disclosed for drilling a hole in a workpiece on the inward feed of the tool and for threading the hole during retraction of the tool. The tool that has a straight body with a drill point at the forward end, a shank at the rearward en... | 05/09/1995 |
| 5203652 | Self-aligning tap and die wrench and universal threading tool A tap and die wrench for threading flat and round workpieces and, formed of hardened steel or a softer material with hardened steel inserts at those points sustaining torque and tensile forces during operation, provides a body member adapted for receiving... | 04/20/1993 |
| 5143492 | Device and tool bit for cutting all known types of threads (except buttress thread) in one single work process A description is given of equipment for the production of screw-threaded drilled holes (tapped holes) of variable diameters in solid materials in a single-pass operation with the use of an integrated cutting tool and with the use of a commercially-availab... | 09/01/1992 |
| 4943191 | Drilling and thread-milling tool and method A drilling and thread-milling tool is disclosed which has at its front-end 7 at least one end-cutting edge 8 for making a core-diameter hole and, behind it, non-pitched thread-milling teeth 4 to generate thread pitches and for which are provided an axial ... | 07/24/1990 |
| 4934040 | Spindle driver for machine tools A spindle driver for a machine tool is disclosed which is adapted to move the spindle and a tool driven thereby in a helical path with variable pitch and with an orbital radius which may be varied. A quill is mounted on a support member and driven by a va... | 06/19/1990 |
| 4930949 | Thread milling cutter In a thread milling cutter comprising at its tip cutting edges for making a bore, said cutting edges are formed as face milling cutting edges which enclose a mutual angle of 180° or more, so that the thread milling cutter on reaching the intended drill h... | 06/05/1990 |
| 4831674 | Drilling and threading tool and method for drilling and threading A combined drilling and threading tool comprises a shank having a conical front portion defined by hole-cutting edges, and spirally curved ribs disposed rearwardly of the edges. A row of thread-cutting teeth is disposed along the leading edge of each rib.... | 05/23/1989 |
| 4761844 | Combined hole making and threading tool A combination tool is disclosed for drilling a hole in a workpiece on the inward feed of the tool and for threading the hole during retraction of the tool. The tool comprises a straight body with a drill point at the forward end, a shank at the rearward e... | 08/09/1988 |
| 4651374 | Combined hole making and threading tool A combination tool is disclosed for drilling a hole in a workpiece on the inward feed of the tool and for threading the hole during retraction of the tool. The tool comprises a straight body with a drill point at the forward end, a shank at the rearward e... | 03/24/1987 |
| 4580933 | Cutting tool accessory A twist drill is provided with a countersink and collar assembly. The countersink includes a body with a face which cooperates with a similar face of the collar to trap a pair of balls between them. The faces being conical, enable the balls to be driven r... | 04/08/1986 |
| 4539832 | Hole sizing tool A hole sizing tool uses a swaging tap to move material which deforms the sides of a generally cylindrical hole toward the axis of the cylinder and is followed by a portion of the tool having a generally flat flaced helical spiral configuration with the tu... | 09/10/1985 |
| 4271554 | Combination drill and tap tool An elongated rectilinear tool for formation of a threaded hole in ductile metal by the coining or flowing of the metal. The tool typically is employed to form through threaded holes in a piece of ductile metal, and features a working end having a boring t... | 06/09/1981 |
