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| Number | Title | Issue Date |
| 7559846 | Machining method and apparatus for thread formation on workpiece Machining techniques and machining apparatus are provided for treating workpieces in an efficient and reliable manner. The machining techniques and machining apparatus employ multiple thread whirling heads associated with a single machining assembly, such that each ... | 07/14/2009 |
| 7340978 | Method and apparatus for making a rotary tool for chip removing machining A method for manufacturing a rotary tool for chip removing machining with at least one chip flute that extends in the longitudinal direction of the tool. The method involves preparing a mixture of a cemented carbide, cermet or ceramics powder and a carrier, such as ... | 03/11/2008 |
| 7267616 | Method for making a ball-nut and method for making a ball-screw A method for making a ball-nut includes cutting a 360-degree closed-loop surface groove in the inner-circumferential wall portion of a ball-nut body using a whirling-type internal-diameter cutting machine. The closed-loop surface groove surrounds the longitudinal ax... | 09/11/2007 |
| 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 |
| 7159429 | Method and device for manufacturing bolt, screw rolling die used therefor, and multiple screw bolt A method and apparatus for manufacturing a bolt capable of mass-producing a multiple screw bolt such as a so-called double screw bolt at a low unit price, and a thread rolling die for use therein. The apparatus for manufacturing a bolt comprises a pair of thread rol... | 01/09/2007 |
| 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 |
| 7076989 | 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, comprises a plurality of first, primary thread rolling die threads, and a plurality of sets of second, auxiliary thread rolling die threads alternatively interposed between succ... | 07/18/2006 |
| 7065996 | Rolling die for ball screw A rolling die for a ball screw has: a cylindrical portion including a helical protrusion formed in an outer peripheral surface thereof for forming a helical ball groove in a raw material of a screw shaft of the ball screw; and a conical lead-in portion formed in one... | 06/27/2006 |
| 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 |
| 6878069 | 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... | 04/12/2005 |
| 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 |
| 6662612 | Method and apparatus for fillet formation under the head of a headed pin type fastener The present invention relates to apparatus and process for roll forming a fillet at the juncture of the shank and head of a pin type fastener. The process and apparatus can be preset to perform the fillet rolling at selected parameters and to monitor the ... | 12/16/2003 |
| 6589122 | Thread tapping device A thread tapping device has a main seat, a rotating head, a handle rod, an adjustment rod, a pivot connector, and a pair of scrape blades. The main seat has a V-shaped groove, a bottom pivot hole, a through aperture, two connection bars, and an end block.... | 07/08/2003 |
| 6464592 | Device for cleaning and restoring threads of a threaded article A device for cleaning-and-restoring threads of a threaded article for more easily and efficiently cleaning and restoring threads of various sized threaded article. The device for cleaning and restoring threads of a threaded article includes a pliers compr... | 10/15/2002 |
| 6092445 | Telescoping die holder A telescoping die holder apparatus a having a outer covering shell with a tapered rear morse into which a shank is fitted. This shank is associated with a biasing member and is reciprocally mounted to the shell by two retaining pins. Each of the pins exte... | 07/25/2000 |
| 5868051 | Method and apparatus for machining with a pivoting cutting tool A method and apparatus has been developed for metal cutting machine using a cutting die tool that pivots as it cuts a metal workpiece. By pivoting the cutting tool, the orientation of the metal surface being cut in the workpiece may be varied along the cu... | 02/09/1999 |
| 5826469 | Threading machine coolant system and method of cooling A power driven pipe threading machine is provided with a coolant system by which an oil free, glycol based coolant is dispensed onto the workpiece during thread cutting in the area thereof adjacent a thread cutting die at a rate which provides for the coo... | 10/27/1998 |
| 5480270 | Clutch for threading attachment Each of the two alternately actualable clutches of a threading shaft includes a clutch disc keyed to the shaft, and positioned between two annular members. One of the members is rotated coaxially of the shaft by a driving gear, and the other is movable ax... | 01/02/1996 |
| 5297997 | Hand held threading device for earring post A hand-held tool is provided for applying threads to an earring post, to enable the earring post to thereafter receive a clutch member in a non-slip relationship. This novel tool comprises an elongate member of generally cylindrical configuration, around ... | 03/29/1994 |
| 5250007 | Method and apparatus for forming threads with variable pitch Apparatus and methods for forming a thread of varying pitch by utilizing a threading assembly which includes a plurality of threading elements having thread cutting or forming portions on the different elements for engaging the work piece at different loc... | 10/05/1993 |
| 5221234 | Method and apparatus for making a screw having variably canted threads A cutting device and method for its operation are utilized to apply variably canted threads to a screw blank. A conventional cutting lathe is provided with a conventional hydraulically operated adjustable cutting support attached thereto. A guide plate is... | 06/22/1993 |
| 5158404 | Taper thread cutting machine and method A machine for taper threading the end of a bar such as reinforcing bar used in concrete construction utilizes a power operated vice to clamp and feed the bar end axially into a rotary head which contains chaser tooling holders which open uniformly on the ... | 10/27/1992 |
| 5076740 | Toolholders for machine tools A toolholder for holding a cutting tool such as a tap in the spindle of a machine tool includes a torque-limiting clutch to prevent excessive load being applied to the cutting tool. The clutch comprises at least one ball located in sockets in the driving ... | 12/31/1991 |
| 4949813 | Lubrication/coolant delivery system An apparatus securable onto a machine for tooling stationary parts, which provides a lubrication/coolant delivery system externally mountable upon a tool holder, of the type having a rotatable die head with a plurality of dies for machining the stationary... | 08/21/1990 |
| 4708538 | Tapping head A tapper for loading a spindle of machine tools with a tap. The tapper proper has a shaft to be driven, which is supported under floating axially by means of a pair of springs the pressurizing direction of which are opposite to each other, built-in. Cutti... | 11/24/1987 |
| 4640652 | Coolant delivery system A tap extension having a dual-mode coolant delivery system is disclosed which is adapted to connect a thread-cutting tap with an associated machine tool spindle having a pressurized coolant supply. The extension includes a generally elongated shank portio... | 02/03/1987 |
| 4581783 | Base construction for threading machines A base for supporting a rotatable spindle shaft and chuck assembly of a motor driven threading machine for rotation about a spindle axis is comprised of axially spaced apart upright support members transverse to the spindle axis and rigidly interconnected... | 04/15/1986 |
| 4557166 | Automatic multiple workpiece turning machine A work turret is rotated by steps around a central axis with a first group of a multiplicity of clamping devices formed to clamp one side of a workpiece each facing a charging device for feeding in workpieces, and a second group of clamping devices on the... | 12/10/1985 |
| 4396317 | Tool holder having coolant fluid delivery system A tool holder (10) in which coolant fluid is delivered to a driven tool (115) through a piston (220) which extends through an axial passage in the tool holder (10) and its collet or chuck (170) and is held in contact with the tool (115) by pressure of the... | 08/02/1983 |
| 4385854 | Collet chuck assembly for taps A collet chuck assembly used for the attachment of a tap to the spindle of a tapping machine is provided. A bore for insertion of the base end of the tap is formed in the lower portion of a cylindrical portion, and at least one O-ring is mounted on the in... | 05/31/1983 |
| 4358911 | Machine for relief grinding tap threads A relief thread grinding machine for making screw taps wherein a workpiece 10 is clamped to a resiliently mounted body 5 of a longitudinally adjustable sled 1. The body carries a follower wheel 17 which bears on a cam roller 15 rotatably mounted on the sl... | 11/16/1982 |
| 4353941 | Apparatus and method of forming self-locking fastener An apparatus for forming a self-locking patch type fastener which includes carrier means for moving a plurality of threaded metal fasteners along an arcuate path, clamping means associated with the carrier means to clamp the fasteners to the carrier means... | 10/12/1982 |
| 4339836 | Lead screw threading assembly The present invention relates to a lead screw threading tool utilized to form external threads on the upper end of a cylindrical shroud of a shock absorber assembly of a vehicular suspension system. The tool includes an expandable collet which is inserted... | 07/20/1982 |
| 4277209 | Threading attachment A reversible driver for a threading tool, such as a tap or die, is disclosed. The driver has rotary input and output members with a forward clutch connected therebetween and a reverse clutch connected through reverse gearing between the input and the outp... | 07/07/1981 |
| 4225273 | Apparatus for threading rods A hollow drive spindle is rotatably mounted on a base and carries a self-opening threading die; and the spindle is driven by a suitable electric drive motor. An air operated collet chuck is mounted on a carriage, for reciprocating the chuck in longitudina... | 09/30/1980 |
| 4123192 | Tapping attachment for a machine tool A tapping attachment for a machine having at least one rotating workpiece spindle and associated coaxial tool drive shaft. The tapping attachment couples a tapping tool to the drive shaft in a manner selectively controlling the tool to rotate with respect... | 10/31/1978 |
| 4088418 | Chuck for driving tap or like rotary tool A tap-driving chuck, having a driven shaft and a driving sleeve spaced co-axially from the shaft to provide an annular space closed at one end by an annular flange extending from the sleeve. Several circumferentially-spaced balls are positioned in the ann... | 05/09/1978 |
| 4080090 | Tap driver assembly A Tap Driver Assembly for use between a spindle that is adapted to provide a coolant and a tap that is adapted to conduct such coolant therethrough, the tap driver assembly including a body in which a nose is slidably guided, a collet clamped by a nut in ... | 03/21/1978 |
| 4021133 | Tap driver apparatus This invention is an apparatus to provide for a tap driver system that maintains alignment of a tap at the start of engagement and permits a limited amount of linear movement by providing a tension spring mounting system to connect the tap holder assembly... | 05/03/1977 |
| 4014622 | Reamer A reamer held in its required non-rotative condition for effective reaming by a rearwardly disposed key and key way construction, and wherein an elastomeric ring in encircling relation about the reamer maintains, without adverse effect on the holding func... | 03/29/1977 |
