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Document Title |
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8172692 |
Method of forming a high performance thread forming screw
A thread forming screw having a minimum surface hardness of HRC 56. The screw can form threads in a workpiece having a surface hardness which exceeds HRC 23. A method of surface hardening a screw...
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7975519 |
Wind turbine installation comprising an apparatus for protection of anchor bolts and method
A wind turbine installation comprises anchor bolts having a sheath or sleeve which extends above the cement foundation and the overlying grout layer. If desired, the sleeve may partially extend...
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6886384 |
Process for forming a threaded member
A process for the formation of a thread form in a substantially elongate member (1), wherein the thread form includes at least one rib (3) spaced apart from at least one other rib along the...
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6540619 |
Bolt and a manufacturing method thereof
The object of the present invention is to prevent the encroaching and the seizure between the bolt and the female screw caused by an oblique screwing of the bolt into the female screw when the bolt...
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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...
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6425829 |
Threaded load transferring attachment
A Nitinol element is threaded by first heating it to a temperature of about 800° C., and then applying a threading tool, such as a tap or die, to form the threads. Nitinol has a unique property of ...
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6328657 |
Threaded fastener and a method of making same
A threaded fastener lighter in weight and easier to produce is made by the moderate temperature-forging, from a raw magnesium material that contains microcrystals whose diameter is about 100 μm or ...
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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 ...
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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...
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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...
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5895324 |
Process for forming axially-extendable bolt by upsetting
An axially-extendable-bolt forming process by upsetting includes preparing a die having a through bore, and an internal upsetting cavity and a buffer space, a rod-shaped bolt precursor and a...
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5795234 |
Process for forming bolt
In a process for forming a bolt, a die, a rod-shaped knock-out member, and a punch are prepared. The die has opposite end surfaces, a through bore opened to one of the opposite end surfaces, and a...
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5582548 |
Method of manufacture of anti-slip fastener
A fastener system includes a fastener and a driver tool in which the fastener includes a cavity for insertion of the driver tool and in which the driver tool and the fastener form an interlocking...
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5562547 |
Self-attachment screw
The present invention relates to a burred fastener for forming a friction fit between the fastener and a driver. The friction fit retains the fastener in contact with the driver during insertion,...
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5547424 |
Method and an apparatus for making an elongate object
In a method of making an elongate object (49) with a head at one end and a point at the other end, a blank (49) is placed in a die (50) having a through-going channel, following which the head end...
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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...
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5211048 |
Method of forming shaped configuration at end of long element
Disclosed is a method of forming a shaped configuration by cold forging at an end of a long element, such as the armature shaft of a starter motor for an automobile. The die used in this method has...
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5205466 |
Manufacturing method of austenitic stainless steel self-tapping and self-drilling screw
This invention is a manufacturing method of Austenitic stainless steel self-tapping and self-drilling screw. It uses low carbon steel or low carbon alloy steel and forges or cuts it into a round...
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5117667 |
Threaded structural fastener with thread lock and method for making it
A fastener which includes a threaded pin having a notched helical thread to receive a threaded collar which, after being set to a torque, is deformed to move material into some notches on the...
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5039265 |
Lightweight fastener
An aerospace fastener comprises a blot with a roll-formed thread, and a nut with a similar thread having a uniform pitch P. The bolt has a cylindrical shank, a threaded tip and a run-out zone...
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4996860 |
Method and apparatus for manufacturing anchor bolts for concrete
A method and apparatus for manufacturing anchor bolts to be fixed on concrete structures, with the method comprising preliminarily heading a steel rod to form at an upper end thereof, a head having...
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4990042 |
Self-drilling blind setting rivet
A blind setting rivet which may be used to secure two layers of materials together is disclosed which drills and deburrs its own aperture through the two layers of materials and attaches the...
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4974274 |
Method of making an engine clip bolt
Bolt material is orbitally swaged into recesses in the clip while simultaneously swaging bolt material over the clip to develop a torsional interference lock and an axial interference lock,...
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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...
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4941337 |
Method of making threaded fasteners
A threaded fastener is made by a method which involves forming a portion having an external thread form and a shank portion. The shank portion has at least one substantially circumferential groove...
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4936725 |
Blind shear-ring fastener and method
A blind fastener comprises a tubular sleeve, a mandrel stem and an integral shear ring and locking collar assembly. The integral shear ring and locking collar assembly has a wedge-shaped bulbing...
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4929505 |
Carbon-carbon composite structural assemblies and methods of making the same
Various methods of fixedly connecting together carbon-carbon composite structures are disclosed herein along with the ultimately connected structural assemblies. These assemblies for the most part...
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4918809 |
Nail making machine
A nail making machine having a capstan for delivering wire to feed rolls which intermittently advance an end portion of the wire to a first workstation where a pointed nail blank is formed and...
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4915559 |
Lightweight fastener
An aerospace fastener comprises a bolt with a roll-formed thread, and a nut with a similar thread having a uniform pitch P. The bolt has a cylindrical shank, a threaded tip and a run-out zone...
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4904145 |
Stud with an adapted head
A stud is formed with an extension to permanently hold an adapted-head by means of a forged pin. The nut-head is designed to be able to withstand torsional and shearing stresses. The extension is...
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4878794 |
Collated screw fasteners
A series of drywall screws are nested together and individually seated with a special driving tool after separation from one another. Each screw is hollow and has interior and exterior screw...
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4828443 |
Eye bolt and method of manufacture
The invention is an eye bolt structure and method of forming including bending a straight rod to include a straight shank portion, a loop portion and a straight rod end portion, the rod end portion...
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4827756 |
Fastener fabrication method
An improved fastener provides axially extending teeth on a narrow shoulder adjacent the fastener head. The teeth bite into sheet material, and are particularly useful in biting into the surface of...
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4765010 |
Method of making a stem for a self-plugging blind fastener
A self-plugging blind fastener of the break-stem type, is suitable for fastening apertured sheets together, and comprises a headed tubular body and an elongate stem disposed in the bore of the...
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4635310 |
System for producing two separate sets of fasteners
A system for producing a first and second series of blind fasteners each in uniformly varying grip increments for securing workpieces varying in total thickness, each blind fastener comprising a...
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4615197 |
Thread rolling monitoring system
A thread rolling monitoring system in which one or more signal generating devices is provided in the mounting system of the stationary die of a pair of thread rolling dies. A sensor develops a...
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4586231 |
Manufacture of metal articles from wire
A multipart article comprising a rod or pin (26) with a sleeve or collar (58) on it is made from one piece of wire by parting off a blank, impact extruding a stem to form the pin or rod, backward...
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4547104 |
Tap
A self-locking fastener includes a male member, such as a bolt, having a standard, helical, male thread of constant diameter which is deformed by the special female locking threads of a female...
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4544312 |
Pin and process for its manufacture
A threaded pin has flutes along the threads formed by roll-forming threads over a preformed section having either flat sides or dished sides. The major diameter of the threads lies along ridge...
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4484849 |
Multiple piece bolt-type fastener
A bolt is fabricated from an elongated threaded rod by severing the rod along a planar surface angularly oriented with respect to a longitudinal axial plane through the rod. A cup-shaped nut has...
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4473914 |
Method and apparatus for manufacturing a stop and lock shoulder for a blind fastener sleeve
A method and apparatus for forming a hollow sleeve for a blind fastener including the steps of forming a sleeve blank to have an enlarged sleeve head and a through bore having a radially inwardly...
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4446618 |
Process for the production of bi-metallic contact rivets
A process for the production of bi-metallic contact rivets with especially thin precious metal layers. The process includes the insertion of two wire segments of congruous diameter but of different...
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4368552 |
Method of making self tapping thread forming screw
A method of making a screw for forming internal threads in a hole in a work formed from a blank having a shank portion and a frusto-conical shaft portion. Three flat portions extending parallel...
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4321001 |
Fabricated industrial fastener
A bolt formed of two separate members, one of the members defining the shank and wrench-engagement portions of the bolt, the other member defining a work-engagement washer-flange surface. This...
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4229875 |
Method of prestressing bolts
A fatigue resistant bolt, and method for making same, is disclosed. Bolts which are tightened to very high loads and are subjected to a dynamic environment are particularly subject to fatigue...
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4170050 |
Method of making lobular internally and externally threaded insert
The present invention relates to an improved method for economically manufacturing lobular internally and externally threaded self-tapping inserts. The method is characterized by the novel...
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4142266 |
Method for creating overload protection against yielding in bolts
An improved method for creating built-in overload protection against further yielding in a bolt which previously has been tightened to its yield point, the method comprising rotating the bolt head...
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4037282 |
Process for creating overload protection against yielding in bolts
A method for creating built-in overload protection against further yielding in a threaded bolt which previously has been tightened to its yield point, said method comprising: reducing the torque...
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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...
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4023225 |
Method of fabrication of headed-shank parts from high-strength two-phase titanium alloys
A method of fabricating headed-shank parts from high-strength two-phase titanium alloys characterized by using an oxalate coating capable of forming a fine-crystalline salt film, cold shaping the...
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