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Class 470/9 - Screw


Subclass of Class 470 - Threaded, headed fastener, or washer making: process and apparatus
Definition: Subject matter wherein the fastener comprises an externally
No. of patents: 63
Last issue date: 02/19/2008


1    
NumberTitleIssue Date
7331743Lobed drive for hi-lite fastener
A drive socket for a male threaded fastener includes three rounded lobes of equal radius which are located equidistant from the center of the fastener and 120° apart from each other. The drive socket also includes three flat surfaces, each flat surface being locate...
02/19/2008
7290972Screw anchor for friable material
A screw anchor includes a roughly cylindrical body (1) with a drilling portion (3) provided, at its free end, with drilling teeth (14-16), at the other end of the body, a bearing flange (5) and an external screw thread (7). ...
11/06/2007
7288093Spinal fusion implant having a curved end
An artificial spinal implant is disclosed which when placed between two adjacent vertebrae directly participates and is incorporated in the ensuing fusion. Instrumentation and procedure is also disclosed. ...
10/30/2007
7140825Self tapping bolt
A self tapping bolt which fastens a mounting member and a receiving member while the bolt cuts internal threads on an inner surface of a tap drill hole prepared in the receiving member. The bolt includes at least one groove formed near an end of a threaded portion o...
11/28/2006
7137768Fastener assembly
A fastener assembly including a stud and plate combination is disclosed for fastening a first member to a second member. The assembly comprises a stud which includes a shank having a first and a second end. A head extends from the first end of the shank, the head de...
11/21/2006
7108607Helical 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
7077038Screw having non-strip drive recess and driver bit for use with the screw
The present invention provides a screw, comprising a screw head having a drive recess and a screw shank having threads and being integrally formed with the screw head, wherein the drive recess includes a plurality of engaging grooves equiangularly radiating from an ...
07/18/2006
7070376Self-drilling, self-anchoring fastener for concrete
A fastener adapted for anchoring into a masonry structure, such as a concrete block, employs an epoxy resin system so that the fastener is both mechanically engaged and bonded to the structure. In one preferred configuration, the bead is composed of a hardener, a re...
07/04/2006
7007537Clam shell system
A work piece has an interior cylindrical component. The interior cylindrical component is composed of a beam. The beam is adapted to apply pressure to remove the work piece. An intermediate cylindrical component has four radial spaced cylindrical control arms, an in...
03/07/2006
6964496Lamp module and back light device having the same
A lamp module and a back light device having the lamp module are provided. The lamp module includes a resilient holder, a lamp tube, and a support unit. The resilient holder has an accommodation portion, such as a cavity, for accommodating one end of the lamp tube. ...
11/15/2005
6843729Fastener 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
6712708Self-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
6648766Cool-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
6475094Method 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
6338600Self-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 screw in which the screw is firstly shaped by pressing ...
01/15/2002
6328657Threaded 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 less. The raw material may be pure magnesium of industria...
12/11/2001
6076437Screw 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 a body (1) and a second position wherein they are retract...
06/20/2000
5971860Device 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 formed to meet standards. The gauging indicator is prefer...
10/26/1999
5906537Five spindle fluting machine
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 flutes into a threaded pin. An internally threaded collar t...
05/25/1999
5716280Method 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 flutes into a threaded pin. An internally threaded collar t...
02/10/1998
5597357Self-drilling screw
A self-drilling screw is provided which is suitable for use with both relatively thick metal plates and relatively thin metal sheets. The screw is formed from a blank 1 which includes a shank 2 extending between a head 3 and drilling tip 4. The shank 2, a...
01/28/1997
5582548Method 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 relationship between the driver tool and the fastener is fo...
12/10/1996
5562547Self-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, tightening and loosening of the fastener into a work surfac...
10/08/1996
5382195Method 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 blades in a first operation. A pair of flutes extending from th...
01/17/1995
5360639Method 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 grinding the projecting areas of the pattern to provide the...
11/01/1994
5308286Device 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 and other erosions by taking full advantage of hardenabil...
05/03/1994
5186688Method 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 and other erosions by taking full advantage of hardenabil...
02/16/1993
5171186Method 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 dimensioned hole for receiving the threaded portion of the screw. Th...
12/15/1992
4947502Method 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 the bone fragments and a head member at a proximal end fo...
08/14/1990
4865881Apparatus 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 threadable fasteners with support structure recesses positionin...
09/12/1989
4827756Fastener 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 a thin sheet which is fastened to a thicker sheet material...
05/09/1989
4793201Porous 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 flow. Fluid guide holes for supplying the fluid to the porou...
12/27/1988
4778637Method 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 other wherein the fibers in the first plane extend continu...
10/18/1988
4773111Selectively 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 subject to hydrogen embrittlement during subsequent plating ...
09/27/1988
4713855Process 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 prior to the deposition of a heavy resistant plating on the...
12/22/1987
4670927Method 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 reception of an arcuately convex blade of a driving tool for...
06/09/1987
4615197Thread 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 signal which is a function of the reaction forces in a directi...
10/07/1986
4589154Method 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 reception of an arcuately convex blade of a driving tool for...
05/20/1986
4589187Method 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 0.002 to 0.006 inch to the threads of the coupling by a detona...
05/20/1986
4577359Method 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. Further, whereas conventional burrs on the drag surfaces c...
03/25/1986
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