Matches 1 - 50 out of 136 1 2 3 >
Match Document Document Title
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...
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...
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...
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...
6338600 Self-tapping, corrosion-resistant screw with hardened tip  
The invention comprises a self-screwthread-forming screw of corrosion-resistant steel, which screw is partially precipitation-hardened. The invention also concerns a process for producing such a...
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...
6076437 Screw set in place and removed rapidly, its fabrication process and tool for its removal  
A screw intended to be set in place and removed rapidly. The screw is characterized in that the threads are intended to take two positions: a first position wherein they project at the periphery of...
5971860 Device for detecting faulty recesses  
A fastener and method of manufacturing a threaded fastener with a tool-receiving recess in the fastener head are provided including a gauging indicator for indicating whether the recess is properly...
5716280 Method for forming a fluted fastener  
A new machine for and method of manufacturing fluted pin fasteners and the pins produced thereby are disclosed which utilize a circular grinding arrangement of a plurality of grinders which grind...
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...
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,...
5382195 Method for making a self-drilling and self-tapping screw  
A self-drilling and tapping screw, the self-drilling portion of which is formed in two major operations. A cutting tip is formed on the tip of a screw blank by a pair of rotating circular saw...
5360639 Method of providing a decorative pattern on a screw head  
A decorative screw is manufactured by forming a three-dimensional pattern on the whole surface of the head of a screw, depositing a coating or plating film on the whole surface of the pattern and...
5308286 Device for manufacturing austenitic stainless steel drill screws  
A method for manufacturing drill screws from austenitic stainless steel, which offers sufficient hardness for drilling and tapping into sheet iron and avoids the problems of intergranular corrosion...
5186688 Method of manufacturing austenitic stainless steel drill screws  
A method for manufacturing drill screws from austenitic stainless steel, which offers sufficient hardness for drilling and tapping into sheet iron and avoids the problems of intergranular corrosion...
5171186 Method of manufacture of a long point drill screw  
A method for forming a self-drilling screw. The self-drilling screw formed by this method stabilizes the screw during the hole drilling step of driving the screw and produces a precisely...
4947502 Method of making a dynamic tension bone screw  
A dynamic bone fixation screw for rejoining fracture fragments of a bone to their approximate original mutual dispostion. It includes a threaded distal end member for threaded engagment with one of...
4865881 Apparatus and process for making locking slide nuts  
An apparatus and method for applying locking material to an area of a fastener adapted for internal threading. The apparatus includes a support structure for moving a succession of internally...
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...
4793201 Porous static pressure guide  
A static pressure lead screw includes a porous ceramic body having fluid flow paths as part of a flank. The porous ceramic body is fixed by a tubular base member through which the fluid does not...
4778637 Method of forming a composite fastener  
A fastener member and method of formation are provided wherein a bolt and nut are formed from a block of resin-impregnated fibers woven in a first, second and third plane each perpendicular to the...
4773111 Selectively hardened self drilling fasteners and process for making the same  
A process for making self-threading screw fasteners wherein only the cutting portions of the tip of the fasteners are hardened. The unhardened portions of the fastener remain ductile and are not...
4713855 Process for making self-drilling fasteners  
A process for making self-drilling, screw fasteners having improved corrosion resistance. The process comprises applying a frangible radiation curable plastic coating over the drill tip corrosion...
4670927 Method and apparatus for forming the head of a high torque fastener  
An improved high torque fastener is provided of the type having a screw head with a generally bow-tie shaped driving slot formed with undercut side walls and an arcuately concave bottom wall for...
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...
4589187 Method of manufacturing an insulating coupling for drill collars  
An insulating coupling for drill collars and a method of manufacture thereof are presented wherein the coupling consists of an electrically insulating ceramic coating applied in thickness from...
4577359 Method of manufacturing a drill screw  
A drill screw having protective burrs on the cutting edges. These burrs preserve the sharpness of the cutting edges against heavy plating buildup which can have detrimental effects on performance....
4565475 Drill point milling machine and method  
A method and apparatus for milling drill points in screw blanks. Form relieved milling cutters are rotated at unusually high speeds to produce high performance screws at improved rates of...
4561277 Method of making screws and dies therefor  
Method and dies for threading a screw comprises providing a screw blank with a portion of its length of lobular cross section and an adjacent portion of the blank of circular cross section. The...
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...
4534690 Assymetrically shaped thread forming screw and method of making same  
A thread forming screw made from a blank which has a tip with an assymetrical cross-section comprised of two oppositely disposed inner surfaces which gradually merge with two oppositely disposed...
4508759 Method and apparatus for making friction locking threaded fasteners  
A threaded fastener having an annular ring of yieldable friction material in the thread grooves thereof and bonded to the sides of the threads, in which the material is of substantially uniform...
4486135 Tapping screw  
A tapping screw in which a shank includes a main shank portion having a substantially uniform diameter and a reduced diameter shank portion having a substantially rounded triangle shaped...
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...
4315340 Method and apparatus for making a self-thread creating fastener  
A thread forming screw having a helical thread and a tapered lead-in section with a polygonal cross section is formed from a conventional blank by rolling the blank between a pair of thread rolling...
4147088 Drill screw  
A drill screw comprising a threaded fastener with a drill bit formed on its entering end, the drill bit characterized by a bi-arc cross-section, that is the shape which is shared by two partially...
4136597 Drill screw and die for producing same  
A drill screw is produced by a pinch pointing die comprising a pair of substantially identical drill point forming portions each of which includes a half conical recess, a half cylindrical recess...
4114507 Drill screw  
A drill and thread forming threaded fastener having a roll threaded shank constructed at one end for selective engagement with a driving tool, a forged drill point at the other end of the shank...
4071918 Method of producing drill screws  
The method includes positioning a plurality of rotary milling saw stations about a path of travel for successive screw blanks. Two longitudinally overlapping fluting cuts are made on each side of...
4071067 Self-locking screw threads  
A screw threaded member having a thread with at least two portions of different form, one portion being of standard form and the other portion, a locking portion, having its root and crest offset...
4040328 Thread-forming fastener having dual lobulation and dies for making the same  
A thread-forming screw has a work-entering section for forming a thread in a workpiece and a work-holding section adjacent thereto. Both sections are of an arcuate, polygonal lobular configuration...
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...
4016795 Self-drilling screws  
A self-drilling and self-tapping fastener, particularly suitable for use in relatively thick metal, which is made from a headed blank by a method including pressing into the cylindrical free end of...
3968533 Fastener manufacturing apparatus  
A threaded fastener of the self-tapping type is described having the conventional head, shank, and pilot end. The shank includes a helically wound thread member impregnated with a carbide or other,...
3933075 Self-drilling fastener and method of making same  
A self-drilling fastener includes a shank having a drill tip integrally formed on one end thereof and a head on the other end. The drill tip is defined by two concave grooves formed one on each...
3924508 Composite drill screw  
A composite drill screw comprises two components of different material joined together by an inertia weld. The first component is the head or the head and a portion of the threaded shank or the...
3906567 Method and apparatus for assembling a screw and compressible washer  
A method and apparatus for assembling a screw and an axially compressible washer and rolling threads on the screw blank in a single operation that results in a shank configuration immediately...
3898706 Method of forming a recess in a fastening element head  
A method of forming a centrally located axially outwardly directed cruciform recess comprising a plurality of intersecting flat-bottomed slots having their ends closed-off in the end face of a...
3894570 Self-tapping fastener  
A threaded fastener of the self-tapping type is described having the conventional head, shank, and pilot end. The shank includes a helically wound thread member impregnated with a carbide or other,...
3890685 Method for manufacturing hollow screws for heat exchangers  
Hollow screws for heat exchangers are produced by cutting a groove along the screw comb and by welding the edges of the groove walls to form a continuous void designed to communicate with inlets...
Matches 1 - 50 out of 136 1 2 3 >