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| Number | Title | Issue Date |
| 7908897 | Spline rolling tool, and process of manufacturing spline rolling tool A spline rolling tool including a plurality of forming teeth that are to bite into a cylindrical workpiece so as to roll splines in the workpiece. Each of the forming teeth has an incomplete toothed region in which a crest of each forming tooth is removed such that ... | 03/22/2011 |
| 7866197 | Rolling-circle machine A rolling-circle machine for rolling a workpiece includes at least one first rolling portion, a second rolling portion connected to the first rolling portion, and at least one adjusting screw. The first rolling portion includes one or more first concaved sections fo... | 01/11/2011 |
| 7392680 | Rolling die and method for forming thread or worm and spline having small number of teeth by rolling simultaneously There is provided a rolling die and a method for forming a thread or worm and a spline having a small number of teeth whose number is thirteen or less simultaneously by rolling. By use of rolling dies, the formation of a worm by rolling by use of a thread rolling di... | 07/01/2008 |
| 7360389 | Manufacturing method of armature shaft, armature shaft and rotary electric machine In a forging process step, a small diameter portion 12 is formed in the leading end portion of a cylindrical shaft material 30, and an installation depressed portion 11d is formed on a base end face of the shaft material 30 for ins... | 04/22/2008 |
| 7353679 | Coldforming machine There is disclosed a coldforming machine in which the rolling racks are preferably arranged in vertical direction and are adjustable via a feed means during the rolling operation in radial direction with respect to the workpiece to be formed. ... | 04/08/2008 |
| 7278286 | Rolling die and a method of making a rod with a ball portion A rolling die is provided for forming a rod member with a ball portion. The rolling die includes a first die member and a second die member facing the first die member. Each of the first die member and the second die member has a process surface. The process surface... | 10/09/2007 |
| 7231794 | Method for manufacturing a worm shaft An object of the present invention is to provide a method of manufacturing a rotational shaft having a worm, wherein a worm portion has a small bending amount. According to the method of the invention, a worm portion is formed at a worm forming portion by a rolling ... | 06/19/2007 |
| 7231795 | Automatic rolling machine with flat chasers An automatic rolling machine with flat chasers, comprising a motionless plate and a movable plate. The movable plate is fixed to a supporting structure that has a reciprocating motion actuated by means of a spindle, crank and linkage, the spindle being supported by ... | 06/19/2007 |
| 7217195 | Method of producing left-right screw The present invention provides a method for manufacturing a right- and left-hand screw having a first external right-handed thread and a second external left-handed thread formed by an inexpensive rolling process using a rolling die with a first thread-cutting die f... | 05/15/2007 |
| 7194886 | Method for forging plate and method for manufacturing a liquid ejection head There is disclosed a punch for forging a metallic plate member. A first die is adapted to be opposed to a first face of the plate member. A second die is adapted to be opposed to a second face of the plate member. A plurality of first projections are provided on the... | 03/27/2007 |
| 7179164 | Chimney cap apparatus and method A cap for a flue opening of a chimney in order to enhance draw of smoke and in order to protect from entry of animals, debris, and the elements. The device includes a tubular housing having sidewalls fabricated from flat sheet metal and a top attached to the sidewal... | 02/20/2007 |
| 7163366 | Screw with two types of threads A screw includes a first thread on the shank and located close to the point of the shank, and a second thread which is connected to the first thread and extends toward the head of the screw. Each of the first and second threads includes an upper flank and a lower fl... | 01/16/2007 |
| 7156600 | Die for, method of making, and fastener with lobed primary thread lead and interposed dual auxiliary thread lead with improved substrate entry end portion A threaded fastener comprises a first, primary thread lead, and a pair of second, auxiliary thread leads alternatively interposed between successive threads of the first, primary thread lead, except within the vicinity of the tip portion of the fastener so as to def... | 01/02/2007 |
| 7153075 | Press fit fastener and method of producing it A press fit fastener (1) includes a shank (2), a head (3) and a press fit portion (4) being located at the shank (2). The head (3) is located at the first end of the shank (2). The press fit portion (4) include... | 12/26/2006 |
| 7108607 | Helical groove fasteners and methods for making same Helical groove fasteners and methods for producing the same are provided for use in systems requiring fluid passage through the fastener. In one embodiment, the fastener includes a shank, a head, a threaded portion, and at least one groove extending through at least... | 09/19/2006 |
| 7073249 | Method for providing a worm on an armature shaft of an electric motor, and armature produced by the method The invention relates to a method for mounting a worm on an armature shaft of an armature for an electric motor. The invention proposes first mounting armature parts, such as an armature lamination packet with armature windings, a commutator, a bearing seat, and/or ... | 07/11/2006 |
| 7051565 | Cold forming machine There is disclosed a coldforming machine in which the rolling racks are preferably arranged in vertical direction and are adjustable via a feed means during the rolling operation in radial direction with respect to the workpiece to be formed. ... | 05/30/2006 |
| 7040131 | Cold forming tool, machine and method Cold forming tool including at least one penetration zone having teeth and a calibration zone having teeth. The teeth having a tooth height that increases substantially from the at least one penetration zone to the calibration zone. A distance between an outer surfa... | 05/09/2006 |
| 7021877 | Self-tapping screw The invention relates to a self-tapping screw, whose threads, in a rear area (facing the head), have a substantially cylindrical external diameter and, in a front area (facing away from the head), extend with an external diameter which decreases towards the end of t... | 04/04/2006 |
| 6974289 | Pressure flank screw and fastening system therewith A male threaded fastening member is provided with depressions in at least one or several helix wraps of the thread adjacent the head, the depressions extending inwardly from an edge of the thread at least part way toward a shank of the male fastening member. In a fa... | 12/13/2005 |
| 6957557 | Threaded fastener with dual reinforcing leads for facilitating manufacture of the fastener, thread rolling die for forming the threaded fastener, and method of manufacturing the threaded fastener A new and improved thread rolling die for forming a new and improved threaded fastener, and a new and improved method or technique of manufacturing the new and improved threaded fastener, is disclosed wherein the new and improved threaded fastener comprises a first,... | 10/25/2005 |
| 6956181 | Method for making a fastener In accordance with one embodiment, the present technique provides a method for making a threaded fastener. The method includes that act of forming a die-making tool having surface features that correspond to the desired crest and flank profiles of a thread of the th... | 10/18/2005 |
| 6938450 | Double nut tensioner assembly for pre-stretched tie rods The tensioner assembly is provided for clamping at least two objects and comprises a tie rod member, a thrust ring positioned on the tie rod member against one of the objects, a first retaining member for removably engaging a distal end of the tie rod member, and a ... | 09/06/2005 |
| 6926600 | Chimney cap apparatus and method A cap for a flue opening of a chimney in order to enhance draw of smoke and in order to protect from entry of animals and debris. The device includes sidewalls fabricated from flat sheet metal and a top attached to the sidewalls from fasteners. A plurality of louver... | 08/09/2005 |
| 6912883 | Load measuring system for a thread rolling machine and operating method therefor A thread rolling machine forming a threaded member from a workpiece includes a die, a device for rotating the die, a device for generating a load applied to the die in a workpiece-feeding direction, a member that deforms under the applied load during a thread rollin... | 07/05/2005 |
| 6712708 | Self-tapping screw, blank and method for joining thin workpieces and production method for the same A headed multi-lobed blank, method of manufacturing a self-tapping screw from the blank, and resulting multi-lobed self-tapping screw for joining thin workpieces provides desirable thread-forming characteristics at the conical tip and body portions, and improved res... | 03/30/2004 |
| 6666059 | Method and device for rotating and machining bar material A method and device for rotating and machining bar material which comprises holding a disc-shaped rotor rotatably around a horizontal axis, providing a pair of rails which are radially opposite to each other and have chord-shaped sliding surfaces in paral... | 12/23/2003 |
| 6634078 | Method of manufacturing a splined member for use in a slip joint A method for manufacturing a splined member, such as a male or female splined shaft, having a low friction coating applied thereto includes the initial step of providing a length of cylindrical stock having a predetermined outer diameter. The end of the c... | 10/21/2003 |
| 6598453 | Tooth rolling flat dies and method for forming teeth A tooth rolling flat die and a method for forming a tooth are provided. The die has the same service life as those of the conventional tooth rolling flat dies using oil coolant even if conducted by semi-dry forming. A first substantially quarter length po... | 07/29/2003 |
| 6516650 | Rolling dies for producing dog point threads A thread rolling dies for producing dog point threads is capable of preventing slips of an outer surface of screw blank when rolling, thereby avoiding breakage of the dog point thread. The dog point thread has a thread portion provided with external threa... | 02/11/2003 |
| 6324887 | Thread rolling dies and process for forming same Thread forming dies to form a continuous helical thread for a metal fastener. The dies are designed and constructed to eliminate laps and discontinuities in the thread form particularly in larger diameter fastener blanks. The dies are constructed by calcu... | 12/04/2001 |
| 6314778 | Rolling die and surface processing method for rolling die In a rolling die as a tool for thread-rolling screws, an electrode exhaustion-melted substance or its reactive substance of a discharge electrode (5) generated by discharge energy based on an in-liquid gap discharging is adhered to an deposited onto a rol... | 11/13/2001 |
| 6301945 | Rack slide assembly and machine for rolling splines in a round workpiece A machine (10) incorporates slide assemblies (12) for adjusting the spacing between toothed forming racks (14) supported by the slide assemblies to roll form splines in a workpiece (16). Each slide assembly (12) includes a main slide (78) supported for mo... | 10/16/2001 |
| 6250123 | Method, apparatus and rack for making power transmission member A power transmission member (20) is provided by a spline rolling method and apparatus (36) that includes a pair of racks (38) for providing splines (24) with ends (34) opposing each other in a precisely spaced relationship at an annular groove (30) that i... | 06/26/2001 |
| 6149363 | Lightweight threaded fastener and thread rolling die The present invention is to a lightweight threaded bolt type fastener having a shank with a large diameter portion and small diameter portion connected by a transition portion; a thread is roll formed on the small diameter portion and terminates in a run-... | 11/21/2000 |
| 6135892 | Method of forming a short point anti-cross threading member The present invention provides a novel fastener member, stud, or other threaded member, for engagement with a female member, and the method of assembly thereof. The fastener member has a novel point which facilitates engagement of the fastener member in t... | 10/24/2000 |
| 6108909 | Groove forming processes for shaft outer diameter A groove forming process for forming at least one groove pattern on the outer diameter of a shaft for use in a hydrodynamic bearing of a spindle motor. First, the shaft is inserted between a pair of dies, at least one of which has a groove pattern thereon... | 08/29/2000 |
| 6047581 | Drive system for vertical rack spline-forming machine A vertical rack-type spline-forming machine based on a novel slide base arrangement comprising a pair of vertical slide bases structurally joined by a symmetrically arranged set of tie bars. The structurally-joined vertical slide bases can be rested in an... | 04/11/2000 |
| 5987953 | Power transmission formation rolling machine having movable headstock and tailstock spindle supports A machine (20) for rolling power transmission formations in a workpiece includes a base (22) having spaced base portions (30) and a rear connecting base portion (32) extending between the spaced base portions which project forwardly therefrom to define a ... | 11/23/1999 |
| 5983690 | Machine having antifriction support for forming racks for rolling power transmission formations A machine (20) for rolling power transmission formations in a workpiece includes a base (20) having a pair of spaced base portions (30), headstock and tailstock spindle supports (48,52) that cooperate to mount the workpiece for rotation about a rotational... | 11/16/1999 |
