Class 470/8 - Making externally threaded fastener, e.g., screw or bolt

Subclass of Class 470 - Threaded, headed fastener, or washer making: process and apparatus
Definition: Subject matter wherein the fastener is a threaded fastener
No. of patents: 38
Last issue date: 11/17/2009

Number	Title	Issue Date
7618327	Fastener with friction engageable surface Interference surfaces are constructed on inner transition surfaces between wings of a fastener having a spiral recess. A portion of the transition surface is tapered to provide the interference. A standard driver for a spiral recess will engage the interference surf...	11/17/2009
7473182	Spiral drive fastener with friction engageable surface Interference surfaces are constructed on inner transition surfaces between wings of a fastener having a spiral recess. A portion of the transition surface is tapered to provide the interference. A standard driver for a spiral recess will engage the interference surf...	01/06/2009
7404769	Spiral drive fastener with engagement ramp The fastener of this application is designed to facilitate the insertion of rotating power driven tools into the fastener recess. The recess of this fastener generally uses spirally configured driving surfaces and is formed in a counterbore in the upper surface of t...	07/29/2008
7402109	Radius gimlet point anti-stripout screw A self-tapping screw includes a head, a shaft, a tapered end and a rounded distal tip. A thread includes a thread start on the tapered end. The axial position of the thread start and a first full thread, the radius of the round distal tip and the diameter of the tap...	07/22/2008
7374494	Fluid connector The present invention relates to a method for manufacturing a bolt that includes an axis, including the steps of providing a metal rod, providing a die, extruding the metal rod through use of the die, cold forming the metal rod, at least in part, to provide a shaft ...	05/20/2008
7313942	Forging machine for the upsetting of deformed reinforcement bars Forging machine for the cold forging of deformed steel bars includes upsetting and clamping dies housed in the same casing. The dies bear a continuous cavity so as to enable forging of long products. ...	01/01/2008
7308816	Forming machine having transmission mechanisms A forming machine includes a first transmission mechanism connected to a cutting mechanism and a conveying clamp mechanism, a drive mechanism for driving the first transmission mechanism; and a second transmission mechanism driven by the drive mechanism for driving ...	12/18/2007
7293949	Spiral drive fastener with friction engageable surface Interference surfaces are constructed on inner transition surfaces between wings of a fastener having a spiral recess. A portion of the transition surface is tapered to provide the interference. A standard driver for a spiral recess will engage the interference surf...	11/13/2007
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
7250020	Artificial climbing hold including a safety system A removable artificial climbing hold comprising a molded or cast body having an opening for a threaded fastener to pass through, and safety means incorporated in the body around the opening to retain the debris in the event of the body breaking. ...	07/31/2007
7247099	Screw with a partially hardened functional tip and process for the production thereof In a process for the production of a screw comprising a low-alloy carbon steel, having a head, an adjoining holding portion and a functional tip which, in the outer region of limited radial depth, is of a greater hardness than the holding portion, in which the screw...	07/24/2007
7189251	Open helical organic tissue anchor having recessible head and method of making the organic tissue anchor The invention relates to a tissue anchor which is an open helix of biocompatible material having a slope of from 0.5 to 10 turns per centimeter, a length from 3 to 75 millimeters, a diameter of from 1.5 to 11 millimeters, and an aspect ratio of from about 3 to about...	03/13/2007
7175533	Method of forming a cold-headed standoff A method of head trimming a fastener blank in a cold-forging process comprises placing a fastener blank into a bore of a punch having an end face; supporting an underside of a head portion of the fastener blank with the punch end face; moving a die having an interna...	02/13/2007
7036227	Process for making ratchet wheels A process for manufacturing ratchet wheels including the steps of: forming a cylindrical forging billet by hot or cold forging, the forging billet having a thru hole of inter-communicating recesses which are pre-formed in a forging die; providing a broach having tee...	05/02/2006
7037204	Standard threaded torque fastener with novel indentation patterns to enhance torque and self-locking capabilities The novel concept to be patented involves minutely indenting the standard fasteners along the pitch line at various points and utilizing the small material deformations around these indentations to provide substantial engagement to resist loosening of the joint unde...	05/02/2006
6843729	Fastener having recess useable with multiple drivers and method of manufacture A fastener is described having a head formed with a recess which accommodates a square head driver, symmetrical drivers, such as PHILLIPS™ style drivers, asymmetrical style cross head drivers, such as POZIDRIV® style drivers, and combination square and cross driv...	01/18/2005
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
6648766	Cool-wrought pressing forming method for slotted headless screws A cool-wrought pressing forming method for slotted headless screws includes five steps of using five different molds and five pressing heads for processing a unit of screw material cut from linear material for forming an unfinished screw with a slot in an...	11/18/2003
6475094	Method for making product and product having ultra high molecular weight plastic parts A method of making a UHMWPE body combined with a bolt, a cap screw, a reinforcing member uses a compression molding machine equipped with a male and female mold set. Particulate UHMWPE dispensed into the cavity of the female mold surrounds the head of the...	11/05/2002
6390929	Method for making drive sockets A method of making a recess in a drive socket and the like includes forming a groove to extend along a face of an elongated drive opening in a metal workpiece from one end of its drive opening, moving material from the surface of the groove to increase it...	05/21/2002
6308544	Vehicle body component with a tin/zinc coating The invention relates to a coated metal fastener that is prepared by electrogalvanically coating a metal fastener with a layer of tin and zinc mixed crystals, wherein the tin is from about 50 to about 90% by weight of the mixed crystals layer. The fastene...	10/30/2001
6234913	Method of manufacturing of fastening elements A method for manufacturing of fastening elements (5, 6) and including producing a blank (1) having a length exceeding a combined length of two fastening elements, upsetting a head (2, 3) at each of opposite ends of the blank (1), heating a section of the ...	05/22/2001
6220805	Slotted screw and method, and apparatus for forming a slot in a semi-product of a screw prior to thread formation The slotted screw is made with an apparatus for forming a slot in a semi-product of a screw prior to thread formation and includes a punch and a die mechanism. The die mechanism includes a tubular member, and an elongated die member formed integrally with...	04/24/2001
6213884	Case hardened self-drilling, self-tapping, self-piercing fasteners and process for making the same A method for heat treating a metal article such as a fastener comprising the step of case hardening the fastener in a gas carborizing atmosphere at a temperature of about 1700° F. or in a carbonitriding atmosphere at a temperature of about 1550° F., and...	04/10/2001
6073552	Method of fastener identification by impressing characters into a surface A method of fastener identification for traceability of manufacturing information of an individual fastener, is achieved by applying a code to the fastener. The fasteners to be identified typically are formed of hardened materials such as steel. A die cas...	06/13/2000
6033313	Male screw and method for manufacturing same A male screw which has a protrusion protruding from a thread thereof at least with regard to the normal direction to a flank of the thread. To obtain such male screw, a blank is introduced between rolling dies which are moved relative to one another and i...	03/07/2000
6017274	Method of forming a fastener In a first embodiment, a method for forming a hardened fastener having a hardened fastener head. Alloys made of cobalt, nickel, chromium, and molybdenum have very high hardnesses while maintaining ductility. Metals conforming to the chemistry of AMS 5844 ...	01/25/2000
6004214	Method of forming a device having a captured washer A method of forming an apparatus having a captured washer includes the step of forming a shaft with a first end, a second end, a shaft diameter, and an axis. A stop element is provided on the shaft. An integral washer is formed on the shaft spaced from th...	12/21/1999
5810670	Method of manufacturing connector bolt A method of manufacturing a connector bolt includes the steps of forming axial grooves on a part of the shank of the connector bolt, and then simultaneously performing a rolling process for thread formation around the shank part with the axial grooves for...	09/22/1998
5782697	Shaft abutment screw, especially for an electric motor, and a method of making such a screw A method of making a shaft abutment screw, especially for axial engagement with an armature shaft of an electric motor, includes the following steps: (a) pressing out a flat mild steel blank, (b) subjecting the blank to a drawing operation so as to form a hollow ...	07/21/1998
5776001	Thread formation The invention relates to thread formation and particularly to the formation of threads on deformed steel reinforcing rods. The method of forming a thread on the steel reinforcing rod comprises the steps of cold upsetting an end region (1) of a deformed st...	07/07/1998
5667443	Bolt including a cleaning thread point tip A fastener has a head and a shank with two ends. One of the ends includes the head while the other includes a pilot point. Also, the shank includes a threaded portion adjacent to the pilot point. A pair of recesses are formed 180° from one another on the...	09/16/1997
4968190	Method of cutting threads A method of threading or rethreading a member by the use of a die made up of a plurality of complementary separable interfitting parts held together by a tensional element disposed around the exterior surface thereof which in use are separated from one an...	11/06/1990
4941341	Process and apparatus for cold pressing a conical external thread The process is carried out using a press tool which has a plurality of dies which are arranged around a longitudinal axis and are radially displaceable with respect to this axis. The radially inner surfaces of the dies correspond to segments of the conica...	07/17/1990
4136416	Method of producing a vibration resistant fastener A vibration resistant threaded fastener such as a set screw and method of forming the fastener wherein the load bearing flank of the thread surface of the screw is provided with a series of serrations. Each serration is formed with an inclined ramp termin...	01/30/1979
4033003	Head forming method A method of providing an undercut "bowtie" slot in the head of a fastener such as a screw or bolt, and the resulting interim and final fastener products. The method consists of only two heading steps, starting with either a preform or a simple blank. In t...	07/05/1977
4028762	Method of threading short spool pieces A method of threading short spool pieces prepared from lined pipe and a novel device for maintaining the short spool centered in a conventional pipe threading machine is disclosed. The device enables a person skilled in the craft to cut and thread short p...	06/14/1977

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Class 470/8 - Making externally threaded fastener, e.g., screw or bolt