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| Number | Title | Issue Date |
| 8147343 | Tap A tap is designed so that the pollution of the environment can be prevented and the cleaning can be simplified. The tap includes an intake hole having openings at a screw portion of the tap. Air intake is performed through the intake hole, so that the chips generate... | 04/03/2012 |
| 7951010 | Device in a thread-forming tool The invention relates to a device (101) to provide helical rotating projection of a thread-forming thread core (102). According to the invention, internally in a cylindrical space (103) of a fluid cylinder-piston device (104), ther... | 05/31/2011 |
| 7468001 | High-speed forming tap A high-speed forming tap (1) for cutting and forming a female screw by cutting edges (E) of a screw portion (2) fed in synchronous with the rotation of a machine tool. The high-speed forming tap is characterized in that chamfers (CF) are provided at a ... | 12/23/2008 |
| 7442128 | Adaptive drive shank for driving a tap tool with a socket and ratchet An adaptive drive shank is provided for adapting a thread cutting tap tool to be driven by a conventional standard size hexagonal socket and ratchet drive. Various embodiments additionally provide color coded cutting thread tap tools adapted to lockably engage with ... | 10/28/2008 |
| 7354350 | Tools and methods for finishing a previously created thread without cutting Implementations of the present invention include a thread-rolling tap, which is designed and intended for the non-cutting finishing of a previously created thread, in particular internal thread. For example, one implementation of such a tool includes at least one th... | 04/08/2008 |
| 7147413 | Precision cemented carbide threading tap A precision cemented carbide threading tap is designed for use in precision tool holders in synchronous high speed tapping. The precision tap includes a fully cylindrical shank without the aid of squares, flats or other notches. The precision tap further includes a ... | 12/12/2006 |
| 7144208 | Low torque tap A low torque tap includes a shank portion with a driving square and a thread cutting portion. The thread cutting portion includes a threaded body with one or more asymmetrical straight flutes that run essentially parallel to a longitudinal axis of the tap. The threa... | 12/05/2006 |
| 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 |
| 7112143 | Thread former or tap Cold thread forming tap or screw tap with a shaft, said shaft having a chuck portion at the one end and a forming or cutting profile portion on the other end, the forming or cutting profile portion being realised as a separate profile element and being fixable centr... | 09/26/2006 |
| 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 |
| 7073988 | Threaded tool with coolant supply A threading tool for generating a thread in a workpiece, includes a threading part which defines a longitudinal axis. A cooling channel extends inside of the threading part along the axis to a front end surface thereof for supplying a coolant. Longitudinally extendi... | 07/11/2006 |
| 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 |
| 7014397 | Self-aligning handheld tapping tool A self-aligning tapping tool comprises an elongate handle having a longitudinal counterbore through a first end. A tap is received in the counterbore. A collar is operatively secured to the tap. The collar is slightly smaller than the counterbore to enable slidable ... | 03/21/2006 |
| 6918718 | Thread cutting tool having cutting teeth with stepped undercut flanks A thread cutting tool for cutting female threads includes a shaft and a cutting section composed of several groups of cutting teeth alternating with chip grooves. At least some of the teeth, preferably teeth disposed in a front region of the tool, have undercuts in ... | 07/19/2005 |
| 6840866 | Method for producing a nut, screw tap for the performance of the method, and a nut produced according to the method A method of producing a nut having a drive area and a clamping area, and a screw tap for performing the method. A bore hole running through the clamping and drive areas is produced in a cylindrical manner. The screw tap is screwed into the cylindrical bore until a p... | 01/11/2005 |
| 6688988 | Looking thread cold forming tool A thread forming tap comprising a shank section, a body section extending longitudinally from the shank section, a helical thread formed on the body section having radially converging flank portions and an undercut ramp formed in at least one of said flan... | 02/10/2004 |
| 6685573 | Thread forming tap A thread forming tap which is capable of reducing tapping torque as well as improving durability by avoiding an increase of an apparent area of margins of external thread that causes interference with a grinding stone. The thread forming tap has an extern... | 02/03/2004 |
| 6663326 | Cutting tip and manufacturing method thereof A cutting tip having a three-layer laminated structure is provided. The tip is made from a disc-shaped three-layer laminate wherein a second layer consisting of a hard sintered compact of CBN or diamond is sandwiched by a first layer and a third layer con... | 12/16/2003 |
| 6626616 | Tapping tool for PVC pipes and fittings A tapping tool for repairing damaged threads on PVC pipe and PVC pipe fittings (e.g. T-connectors, elbows, etc.) includes an elongate shaft with a handle member fixed to a proximal end and a head fixed to an opposite distal end. A threaded tap formed of h... | 09/30/2003 |
| 6569022 | Self-synchronizing tap driver for rigid tapping Disclosed is a tap driver for rigid tapping, which includes predetermined tension and compression factors to self-synchronize the tap driver. In the preferred embodiment, the tap driver includes helical coils imparted in the tap driver body which allow th... | 05/27/2003 |
| 6554550 | Tandem tap and method for cutting screw threads A tandem tap for cutting screw threads into a bore comprises straight flutes with a spiral point along the front section for pushing the chips generated thereby forward and spiral flutes along the rear section for removing the chips generated thereby rear... | 04/29/2003 |
| 6550120 | Threaded conversion kit for replacement ball joints An aftermarket retrofit kit is used to prepare control arm bosses of automotive suspension systems to receive new, replacement ball joints. The kit includes a special cutting tool for forming obtuse threads in the apertures of aluminum suspension system m... | 04/22/2003 |
| 6544127 | Tool for repairing damaged threads The invention provides a chasing tool for repairing damaged internal threads, including a body provided with a bore; a handle retained in the bore with one degree of freedom in rotation, the handle being provided over at least part of its length with an i... | 04/08/2003 |
| 6514148 | Thread rolling tap A thread rolling tap including a stem portion, and a thread forming portion having a body with a plurality of thread turns formed on the body and including a front entrance region and a guide region, with the thread turns having each, in the front region ... | 02/04/2003 |
| 6499920 | Tap A cutting tap comprises a threaded portion including a lead whose thread diameter gradually decreases toward a front end of the lead, a complete thread portion continued from the lead, and four flutes arranged at equal intervals in a circumferential direc... | 12/31/2002 |
| 6386954 | Thread forming tap and threading method It is an object of the invention to provide a thread-forming tap to which a chamfer can easily be mounted, and a general threading method. The thread forming tap of the invention has a threaded portion comprising a tapered chamfer and a parallel threaded ... | 05/14/2002 |
| 6293740 | Threading tool The invention involves a threading tool (20) for defining an internal thread within walls (62) of a cavity (64) within a workpiece having a floor (66) around an axially disposed protuberance (68) with a top (70) extending from the floor (66). The threadin... | 09/25/2001 |
| 6257809 | Tapping apparatus and method Apparatus for tapping or threading holes in material reduces stresses and the danger of breakage of the tap by rotatably driving the tap at locations on the tap that change as the tap enters the workpiece. The driving element engages the tap at a point cl... | 07/10/2001 |
| 6217267 | Cold forming tap having internal finish cutting edge and method of producing the same A cold forming tap with an internal finish cutting edge includes an external thread portion having radially outwardly protruding portions and relief portions which are alternately located in a helical direction in which an external thread extends. The pro... | 04/17/2001 |
| 6213693 | Taper taps for pipe threads made of hard material A high durability taper tap for pipe threads which can cut threads in a pipe made of hard materials having hardness of approximately 50 HRC. The sum Σγ of the width angle of cutters is large, approximately 130°, thereby achieving high strength and rigi... | 04/10/2001 |
| 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 |
| 6035744 | Method for the production of a cutting insert for thread cutting The invention concerns a process for the manufacture of a cutting insert (1) for thread cutting, with several cutting teeth (2-6) simultaneously engaged in incrementally cutting the thread profile. The blank is manufactured by pressing and sintering so th... | 03/14/2000 |
| 6012882 | Combined hole making, threading, and chamfering tool with staggered thread cutting teeth Solid tungsten carbide is the popular material for these combinations tools. High resultant side forces on the tool during the thread milling phase are caused by relatively high circumferential engagement of the tool and a very low feed per tooth (chip th... | 01/11/2000 |
| 5993120 | Internal thread-producing tool and method A thread-producing tool for producing an internal thread includes a body forming a rear shank portion and a front cutting portion. Provided in the body is a lubricant storage chamber for storing liquid lubricant which is driven toward the cutting portion ... | 11/30/1999 |
| 5928084 | Tools for producing threads with varying pitch Apparatus for forming threads of varying pitch on a work piece, by first producing a partial thread and groove whose pitch does not vary in accordance with a pattern of pitch variation desired for the final product, and then reshaping the partial thread a... | 07/27/1999 |
| 5915892 | Thread-cutting chuck for CNC machine technology of rigid tapping A thread-cutting chuck for CNC machine technology of rigid tapping, with a clamping means held in a chuck shaft, particularly a collet chuck, for the tap, an accommodating part, which is held in the chuck shaft without clearance in the direction of rotati... | 06/29/1999 |
| 5908272 | Rotational cutting tool guard apparatus A guard apparatus for a rotational tool prevents direct contact of the cutting regions by an operator of the tool. The rotational cutting tool to which this invention is particularly applicable is the type having at least a shank portion and a toothed reg... | 06/01/1999 |
| 5897593 | Lordotic spinal implant A lordotic implant has a frusto-conical shape with external threads. Prior to placement of the implant, vertebrae are distracted in a manner to provide a desired lordosis between the vertebrae. The pre-distracted vertebrae are then tapped to provide a tap... | 04/27/1999 |
| 5865847 | Lordotic spinal implant A lordotic implant has a frusto-conical shape with external threads. Prior to placement of the implant, vertebrae are distracted in a manner to provide a desired lordosis between the vertebrae. The pre-distracted vertebrae are then tapped to provide a tap... | 02/02/1999 |
