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| Number | Title | Issue Date |
| 7484920 | Thread-forming screw A thread-forming screw (11; 21; 31; 51), has a stem (12) with at least one thread (14; 24; 34; 54) arranged, at least regionwise, over its circumference, and a plurality of cutting elements (16; 26; 36; 56) arranged in a respective plural... | 02/03/2009 |
| 7338244 | Attachment device for turbine combustor liner An attachment device for coupling one or more restrained members to a frame. In at least one embodiment, the attachment device may be configured to attach one or more turbine combustor liners to a carrier. The attachment device may include a body rotatable about an ... | 03/04/2008 |
| 7338243 | Thread-cutting screw A thread-cutting screw (1) serves for being screwed into the bore-hole wall (1a) of a bore-hole (1b). It comprises a substantially cylindrical core (2) of metal which has a central longitudinal axis (4), a thread (... | 03/04/2008 |
| 7290972 | Screw 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 |
| 7237994 | Wall plug A wall plug for enabling fixings to be attached to a wall, the wall plug comprising an elongate body having an inner insertion end and an outer end, a through bore extending from the outer end toward the inner end, the through bore being adapted to axially receive a... | 07/03/2007 |
| 7214019 | Self-tapping screw A self-tapping screw having a boring part and a threaded shaft for fixing a panel-type object to a preferably metallic substructure is provided. The screw is configured in such a way that it produces a through hole in the panel type object, said hole accommodating t... | 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 |
| 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 |
| 7147194 | Serving terminal illuminator Exemplary embodiments of a hanging tool support assembly provide a portable, adjustable support to hold and/or position a tool, such as a flashlight. For example, the hanging tool support assembly may hang or otherwise suspend from a support line proximate to a work... | 12/12/2006 |
| 7144212 | Self-drilling hollow wall anchor A high strength failure-resistant hollow wall anchor having a self drilling threaded installation structure adapted to be broken, after positioning, by an inserted screw, into expandable anchoring elements. The anchoring elements engage internally formed cams and th... | 12/05/2006 |
| 7140825 | Self 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 |
| 7137766 | Screw and plastic part unit A screw-plastic part unit in which the plastic part can be a guide having a tapered bottom end for fitting into a countersink to center the tip end of the screw in the countersink and also can have at least one cut-out portion at its top end to facilitate fracturing... | 11/21/2006 |
| 7114902 | Self-tapping bush-shaped screwed insert A thread-cutting screwed dowel has an essentially cylindrical, sleevelike dowel body with an axial bore and with a load engagement device disposed in the interior of the dowel body, for example with a female thread. On its outer face, the dowel body is equipped with... | 10/03/2006 |
| 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 |
| 7101133 | Thread-forming screw fastener The invention relates to a screw fastener comprising a threaded shank having a force application means for torque transmission and a screw fastener point. The threaded shank consists of a shank core and a self-tapping thread, and the thread is designed as a prominen... | 09/05/2006 |
| 7090452 | Tapping screw A tapping screw includes a head, a shank and a cutting member, Said the shank has male threads, and the cutting member extends down from the shank and has a plurality of cutting grooves lengthwise formed and/or a plurality of wings also lengthwise formed; an annular... | 08/15/2006 |
| 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 |
| 7044702 | Screw with a plurality of screwing angles and mold device for forming the same The screw with a plurality of helix angles comprises a first section having a first thread with a first helix angle, at least one third section having a third thread with a third helix angle; and a fifth section having a fifth thread with a fifth helix angle wherein... | 05/16/2006 |
| 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 |
| 7014386 | Screw connection of components to sheet material and method of effecting connection A secure connection (10) of a component to a sheet material including, an extent of thin sheet metal (20) having an attaching surface (36), a component (30) having a mating surface (37) abutting the attaching surface, an aperture (... | 03/21/2006 |
| 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 |
| 6941758 | Internally coolable screw A screw includes a head and a shank, and includes a coolant passage which has an inflow opening and an outflow opening. The cooling pasage does not pass axially through the entire head and shank. By avoiding a coolant flow which passes axially through the entire scr... | 09/13/2005 |
| 6935824 | Tamper resistant screw An improved tamper resistant screw and driver tool. In one embodiment, the present invention provides a tamper resistant screw and screw driver tool. The screw head features a unique tamper resistant design. The screw cannot be turned successfully with standard scre... | 08/30/2005 |
| 6910836 | Impact driver for rotary tools Method and apparatus for improving the efficiency of the rotating cutter of a tool by converting at least part of the rotational torque applied to the cutter to repeated rotational impact forces. ... | 06/28/2005 |
| 6910841 | Thread-forming screw A thread-forming screw includes a head and a shank, the shank having a thread and a thread-forming zone at the end opposite to the head, the thread-forming zone also having a thread portion. The shank at the end opposite to the head has a spherical portion with a ma... | 06/28/2005 |
| 6908264 | Quick change drill bit A quick-change core drill includes an adapter and a generally tubular drill barrel. The adapter comprises a first end adapted to be removably connected to a drill spindle and a second end adapted to be removably connected to the drill barrel. The drill barrel includ... | 06/21/2005 |
| 6764263 | Self-threading screw provided with a point and apparatus to produce it A self-threading screw is described which includes a (basically) conical point set at the end of its shank opposite that where the head is housed, and a sunken zone set between the end of the screw shank and the conical point. In addition, an apparatus is des... | 07/20/2004 |
| 6698987 | Self-drilling and thread-forming connecting element The present invention relates to a self-drilling and thread-forming connecting element, in particular a screw. The screw comprises a threaded shank including a cylindrical core and a thread formed as a protuberance on the core. The screw also includes an ... | 03/02/2004 |
| 6672813 | Tapping screw The present invention is directed to provide a tapping screw for a soft material having a sufficiently large stripping torque compared to a driving torque and an increased tolerance of a fastening torque, and characterized in that it has threads each havi... | 01/06/2004 |
| 6623228 | Thread-cutting screw A thread cutting screw to be screwed into a predrilled hole in concrete, masonry, or the like is characterized in that the relationship between the load bearing thread surface AOn of the loaded thread flank, which surface is standardized to the load beari... | 09/23/2003 |
| 6599072 | Corrosion resisting screw with cutting insert A corrosion-resisting, self-tapping screw (1), in particular a concrete screw, to be driven into a bore, which has a wall, comprises a substantially cylindrical core (2) of corrosion-resisting metal with a central longitudinal axis (8); a thread (5), whic... | 07/29/2003 |
| 6514026 | Screw A screw (1), in particular a concrete screw, for being screwed into a drilled hole (20) comprises a core (2) with a pilot end (3), a lengthwise screw-in direction (5) and a central longitudinal axis (4); and a thread (7), which is designed in a single pie... | 02/04/2003 |
| 6478520 | Self-threading screw for metal with six formers of prismatic shape Described herein is a self-threading screw, designed to be inserted in a hole of appropriate size made in a sheet of metal (or other metallic body), which has at the free end of its shank six projections ("formers" or "shapers") of prismatic shape designe... | 11/12/2002 |
| 6468014 | Screw with spiral triangular threads A screw includes a cylindrical shank having an upper portion formed with spiral circular threads and a lower portion formed with spiral triangular threads, each of the spiral triangular threads having three budges having three sharp edges and three pointe... | 10/22/2002 |
| 6454506 | Anchor bolt with an outer thread having thread turns with different cross-sectional shape An anchor bolt having a substantially cylindrical stem (2), and at least one thread provided on the stem (2) and extending from a free front end of the stem at least over a portion of a longitudinal extent of the stem (2), the thread (6) having a pluralit... | 09/24/2002 |
| 6450748 | Screw having a screw thread formed with concave facets A screw includes a shank portion and a head portion on one end of the shank portion. The shank portion has a continuous spiral screw thread with a plurality of turns formed thereon. The screw thread has an upper thread surface, a lower thread surface, and... | 09/17/2002 |
| 6254327 | Screw with spiral triangular threads A screw comprising a shank having an upper portion formed with spiral circular threads and a lower portion formed with spiral triangular threads, each of said spiral triangular threads having three sharp edges and three pointed tips, said pointed tips of ... | 07/03/2001 |
| 6250866 | Self-drilling, self-tapping screw for concrete blocks A self-drilling, self-tapping screw for concrete blocks which includes a shank having a proximal portion equipped with a double lead, self-tapping spiral thread and an unthreaded portion which connects the threaded shank portion to a carbide drill tip in ... | 06/26/2001 |
| 6158939 | Self tapping screw A cold-rolled screw which is intended for screwing into plastic has a narrow self-tapping thread with an inflection on at least one side of the thread so that the inner flank angle is smaller than the outer flank angle but still approximately equal to or ... | 12/12/2000 |
| 6113331 | Self tapping screw for screwing into thermoplastics and the like A retaining screw produced by cold rolling includes a self tapping thread designed to be screwed into thermoplastic material or the like. The screw has a virtually end-to-end cylindrical thread as well as thread teeth, the thread crest of which has the sa... | 09/05/2000 |
