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| Number | Title | Issue Date |
| 7344346 | Fast fasten and loose resistant bolt and nut structure A bolt and nut structure has a bolt nail, a nut nail and an elastic tube. The elastic tube has several outward plates, several convex blocks, a convex edge, and an elastic gap. The edge of the elastic tube has a ring hook. Inward plates on an inner side of the elast... | 03/18/2008 |
| 7293936 | Precision aligning fastener Precision aligning fastener for releasably joining two halves of a manufactured article. The precision aligning fastener has a male body that threads into a female body. The threads on the male and female threads, bodies are provided in an interrupted-thread pattern... | 11/13/2007 |
| 7266874 | Method of installing a self-drilling anchor A method of installing a self drilling anchor for use in a friable material mounted on a member comprising an elongated body having an axis, an axial bore adapted to receive an elongated fastener, a flared end having torque transmitting surfaces therein, a proximal ... | 09/11/2007 |
| 7222829 | Antenna mounting structure For mounting an antenna device on a first side of a panel body, a mount screw is protruded from the antenna device and formed with a slit extending from a distal end face thereof in an axial direction thereof. A washer has a first engagement member extended from a m... | 05/29/2007 |
| 7214020 | Looseness resisting screw and stud hole A looseness resisting screw formed with an external thread includes a first thread area having a substantially uniform outer diameter and a second thread area extended from the first thread area toward a leading end of the screw. The second thread area has a plurali... | 05/08/2007 |
| 7163366 | Screw with two types of threads A screw includes a first thread on the shank and located close to the point of the shank, and a second thread which is connected to the first thread and extends toward the head of the screw. Each of the first and second threads includes an upper flank and a lower fl... | 01/16/2007 |
| 7160072 | Method of attaching a functional element; die; functional element; component assembly A method of attaching a functional element (10, 210), in particular a fastener element to a sheet metal part (12, 212), optionally in liquid and/or gas-tight manner, is characterized in that the functional element (10, 210, 410) is pressed again... | 01/09/2007 |
| 7160073 | Tapping screw A tapping screw fastened to a subject member in which a thread portion formed in a shaft portion of the tapping screw is used to form a female screw thread in a prepared hole of the subject member. An angle of a thread ridge is approximately 30 degrees, a plurality ... | 01/09/2007 |
| 7101134 | Fastener having multiple lobed thread A threaded fastener includes a lead having bosses separated from one another by bases along the thread crest. The lead-in and lead-out profiles of the bosses, and other features of the bosses and bases may differ from one another along the fastener shank. The lead-i... | 09/05/2006 |
| 7070376 | Self-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 |
| 7063491 | Reverse barb system for screws and nails The reverse barb system for screws and nails includes fasteners that are barbed to prevent backing out once driven into a workpiece or construction material, such as wood. A screw with barbed threads has several barbed thread sections. Each barbed thread section is ... | 06/20/2006 |
| 7056075 | Screw-type anchor A self-tapping masonry anchor includes an axial bore that is formed at one end and extends through a portion of the anchor. ... | 06/06/2006 |
| 7040850 | Fastener for use with frangible material A metal fastener for frangible material has a threaded shank, a head proximate one end of the shank and a tip at the opposite end. The fastener has a coarse pitch and relatively large ratio of major to minor diameters suited for securing the fastener into frangible ... | 05/09/2006 |
| 7021877 | Self-tapping screw The invention relates to a self-tapping screw, whose threads, in a rear area (facing the head), have a substantially cylindrical external diameter and, in a front area (facing away from the head), extend with an external diameter which decreases towards the end of t... | 04/04/2006 |
| 6956181 | Method for making a fastener In accordance with one embodiment, the present technique provides a method for making a threaded fastener. The method includes that act of forming a die-making tool having surface features that correspond to the desired crest and flank profiles of a thread of the th... | 10/18/2005 |
| 6926484 | Threaded fastener for use within multiple substrates A threaded fastener has a substantially single helical thread formed upon a shank portion thereof, and a plurality of substantially saw-blade type or serrated teeth are formed upon crest portions of leading ones of individual thread portions of the helical thread. T... | 08/09/2005 |
| 6676352 | Fasteners with improved retaining effect A fastener includes a main body having a number of spaced ridges formed on an outer periphery thereof. The ridges are arranged along a helix. At least one of the ridges has a retainer extending in a direction that is at an angle with an extending directio... | 01/13/2004 |
| 6604899 | Sealable fastener with circumferential sealant channel and sealant delivery passageway for delivering sealant into the circumferential sealant channel A sealable fastener for insertion into an fastener opening in a receiving structure includes a fastener shank including a shank first end having a shank first end wall and a shank second end having a shank second end wall, a shank side wall extending betw... | 08/12/2003 |
| 6588999 | Sealable fastener with sealant delivery passageway to circumferential sealant channel A sealable fastener for insertion into a fastener opening bore in a receiving structure includes a fastener shank including a shank first end having a shank first end wall and a shank second end having a shank second end wall, a shank side wall extend bet... | 07/08/2003 |
| 6334747 | Nut, bolt, and thread unit of female and male thread members The nut has a tool engaging region or a hexagonal region and a flange region provided on a thread end of the hexagonal region. A sloped step sloping at an angle to the center line of the nut is provided on the thread end. The sloped step (surface) is thus... | 01/01/2002 |
| 6176664 | Fastening screw and method of forming same A fastening screw having an elongate shank (1), and a drilling tip (2) and a head (3) provided at respective opposite ends of the shank (1). The drilling tip (2) has a cutting edge (5) for cutting through metal and a flute (6) extending longitudinally of ... | 01/23/2001 |
| 6158938 | Anti-cross threading fastener An anti-cross threading fastener having a threaded shaft portion with a major diameter and a minor diameter, a leading end shaft portion devoid of screw threads and having a diameter less than the major diameter of the threaded shaft portion. The leading ... | 12/12/2000 |
| 6152666 | Screw for use as a fastener in fibrous material such as wood The thread (15) of a wood or the like screw has pairs of V-shaped recesses (22, 23) in the edge of a selected intermediate length of the thread (17). Each pair defines a W-shaped cutout (19, 20, 11). The cutouts (19-21) extend into only a part of radial w... | 11/28/2000 |
| 6146047 | Fastener and fastening structure Provided are a fasterner enabling a plurality of members to be joined strongly and simply in a manner permitting ready disassembly and a fastening structure enabling a plurality of members to be so joined by optional use of the fastener. In one aspect of ... | 11/14/2000 |
| 6135689 | Self-locking fastener A self-locking fastener wherein crests of respective threads of a part of a group of threads on the self-locking fastener are deformed to provide a group of lock portions so that the respective threads have a cross section of a trapezoidal-shape over an a... | 10/24/2000 |
| 5759003 | Combined screw and clearance drill A combination screw and clearance drill is provided that in one mode of operation is able to drill a pilot hole for the screw threads through a top piece of material and then screw into a lower piece of material, thus enabling the two pieces of material t... | 06/02/1998 |
| 5687533 | Method and apparatus for connecting window frame segments A corner lock includes a first member that is secured to a first window frame segment and a second member that is secured to the first member and a second window frame segment. The first member is inserted into an opening in an end of the first window fra... | 11/18/1997 |
| 5653006 | Passenger-side airbag module darted end caps and method of assembly The screws which are normally employed to attach the end plates to the trough-shaped main body of a passenger-side airbag module reaction canister are replaced by impact-driven darts. The darts are made of material harder than that of the main body and in... | 08/05/1997 |
| 5609455 | Anticross-threading male fastener An externally threaded male fastener has a right circular cylinder at one end that is slidably engageable with the internal threads of a female element, a pair diametrically opposed circumferentially truncated approach thread portions between the right ci... | 03/11/1997 |
| 5564874 | Fastening element in the form of a fiber-reinforced ceramic screw and/or nut for ceramic components A fastening or connecting device for fiber-reinforced ceramics to be used in high temperature ranges is in the form of a screw that is manufactured of a ceramic material in the shape of a plate having fiber layers with fibers oriented parallel to the surf... | 10/15/1996 |
| 5443331 | Threaded bar construction A threaded bar construction and bar stock and nut combination useful in the mining industry and also in the concrete industry; the bar stock is provided with raised thread segments which appear only on one side of the elongate bar employed, so as to provi... | 08/22/1995 |
| 5340253 | Fastener with thread lock A threaded fastener that self locks as it is tightened to a fastened object. The thread includes one or more portions that are shifted, resulting in one or more discontinuities in the thread. Each shifted portion of thread is fully formed at the discontin... | 08/23/1994 |
| 5306983 | Support device for a picture tube component A support device for a deflection unit (10) for a picture tube comprises pins (17) which in a longitudinal direction carry a thread (19) over part of their circumferences. The pins run in guide bores, which are constructed so as to exhibit a recess of not... | 04/26/1994 |
| 5300076 | Percutaneous bone screw for supporting a stereotaxy frame The screw (1) comprises an end formed by a dog point (2) having a plane transverse surface (3) and a cylindrical lateral surface (4) connected to the plane surface (3) by a rounded annular radius (5), it also comprises a threaded part (6) contiguous with ... | 04/05/1994 |
| 5267423 | Self-drilling anchor and bearing plate assembly A self-drilling anchor and bearing plate assembly adapted to secure a membrane or other layer onto a roof deck or a similar substrate formed of a material that requires a drilled hole to receive the anchor. The bearing plate which rests on the layer and i... | 12/07/1993 |
| 5234291 | Roof bolts The roof bolt tendon comprises a length of square twist steel with a partial thread formed directly thereon over at least part of its length. The partial thread, which may extend for the full length of the tendon and which is preferably formed by rolling,... | 08/10/1993 |
| 5110245 | Thread forming screw This invention relates to an improvement of a thread forming screw including driven head, cylindrically formed shanks rolled type thread which has a following flank angle smaller than a progresssive flank angle and is interrupted by plural slot recesses l... | 05/05/1992 |
| 5064327 | Oblique point fastener A blank and fastener formed from the blank for a thread-forming fastener which provides axially aligned driving. A tip portion of the blank is formed in a conical shape at an oblique angle to the shank portion of the blank. The blank formed as such is the... | 11/12/1991 |
| 5044853 | Thread-cutting screw A thread-cutting screw where the edge of the screw is at least partially undulating. The undulating edge has recesses in the shape of a parabola interrupting the flank face of the thread. The recesses are asymmetrical so that the front flank face of the r... | 09/03/1991 |
| 4993575 | Quick closure box A quick closure box is disclosed, in which the lid is fixed to the base by means of a small pitch screw engaged in an extension having a large pitch thread for engagement in a hole comprising thread portions.... | 02/19/1991 |
