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| Number | Title | Issue Date |
| 8128671 | Variable flank bone screw A bone screw comprising a threaded shank having a longitudinal axis and including a first helical threading extending along a first length of the threaded shank portion and a second helical threading extending from a location proximately adjacent the first helical t... | 03/06/2012 |
| 8038376 | Connection element for a screwed connection as well as such a screwed connection A connection element (1) has a thread (2) that can be made to engage with a mating thread such as, for instance, a nut. The thread includes locking means (3) that acts upon the mating thread. The locking means (3) are formed by flanks ( | 10/18/2011 |
| 7828500 | Threaded engagement element with self-locking threads A threaded engagement element comprising a body having a longitudinal axis and a thread adapted to be received by a corresponding thread of a second element. The threads are characterized by a thread parameter. The body has first and second portions that each has a ... | 11/09/2010 |
| 7722304 | Thread locking/prevailing torque fastener and fastener assembly A thread locking fastener assembly comprising a nut anchor defining an internal thread having a longitudinal axis, a leading face and a trailing face, the internal thread, in axial section, having a profile which is symmetric about a first imaginary line extending r... | 05/25/2010 |
| 7334975 | Fastener assembly The present invention relates to a stud including, a head having a torque transferring structure and an underside wherein the underside includes a plurality of protrusions; a shaft having a trilobular shape comprising a plurality of shaft elements having at least on... | 02/26/2008 |
| 7326014 | Interactive fit screw thread A threaded fastener includes a curved-line path thread provided in a helical pattern along a shank of the fastener. The curved-line path can be provided on either side of the standard straight-line path or on opposite sides of the straight-line path. The curved-line... | 02/05/2008 |
| 7322978 | Bone anchors for use in attaching soft tissue to a bone Improved bone anchors are disclosed for anchoring one or more sutures attached to soft tissue to a bone. The bone anchor has an anchor body that extends between a distal and a proximal end. A bore is formed axially in the anchor body and opens at the proximal end. O... | 01/29/2008 |
| 7320626 | Transformer stud connector with improved conductivity using a special thread profile A connector for attachment to an extending transformer stud. The connector includes an elongate central body having a central aperture and an opening at one end for insertable accommodation of the transformer stud. The central aperture accepts a single or more than ... | 01/22/2008 |
| 7246979 | Multi-pitch screw, multi-pitch nut, feed screw device using the screw and nut, and method of producing the nut A flat portion 12a and a slope portion 12b are provided on a thread 12 of a multi-pitch screw 10 alternately. The flat portion and the slope portion are provided on the thread of a multi-pitch nut which fastens with this. Co... | 07/24/2007 |
| 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 |
| 7182765 | Bone fixation system An implant for fixation of a bone includes a shaft having a proximal end and a distal end, and a longitudinal axis defined between the proximal end and the distal end. A plurality of blades are disposed on the shaft, and are helically twisted about the longitudinal ... | 02/27/2007 |
| 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 |
| 7156600 | Die for, method of making, and fastener with lobed primary thread lead and interposed dual auxiliary thread lead with improved substrate entry end portion A threaded fastener comprises a first, primary thread lead, and a pair of second, auxiliary thread leads alternatively interposed between successive threads of the first, primary thread lead, except within the vicinity of the tip portion of the fastener so as to def... | 01/02/2007 |
| 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 |
| 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 |
| 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 |
| 7025550 | Pull type swage fasteners with removable mandrel A pull type swage fastener including a pin and a collar adapted to be swaged into a locking portion on the pin shank and with a removable mandrel being threadably securable in a pull cavity at the end of the pin shank and with the mandrel adapted to be gripped by an... | 04/11/2006 |
| 7007984 | Hang-free thread design A threaded pin and box connection having thread geometries and/or dissimilar thread fits that prevent the pin thread of a connection from hanging up in the box thread as the pin is being stabbed into or destabbed from the box. Dissimilar geometries and/or threads in... | 03/07/2006 |
| 6974289 | Pressure flank screw and fastening system therewith A male threaded fastening member is provided with depressions in at least one or several helix wraps of the thread adjacent the head, the depressions extending inwardly from an edge of the thread at least part way toward a shank of the male fastening member. In a fa... | 12/13/2005 |
| 6945566 | High-pressure connection device A high-pressure connection device with a housing having a receiving opening into which an inlet conduit discharges. A pressure tube connector stub discharges on one end into an end face of the connector stub and has a male thread, which engages a female thread in th... | 09/20/2005 |
| 6918727 | Anchoring screw with double heads and triple threads of different depths of thread An anchoring screw with triple threads of different depths of thread especially useful for coupling with a construction hole on a cement wall (or other construction boards and panels) includes a first bolt section, a tool driven section and a second bolt section. Th... | 07/19/2005 |
| 6905500 | Bone fixation apparatus Disclosed is a bone fixation apparatus. This device comprises a bone screw having a head; a cap member placed on an upper part of the head of the bone screw; a receiver member having a bore in which the cap member and the head of the bone screw are respectively acco... | 06/14/2005 |
| 6899500 | Fastner having multiple-bossed lead A threaded fastener includes a lead having bosses separated from one another by bases along the thread crest. Two such leads may be formed such that lead-in profiles for of one lead are disposed at locations corresponding to locations of lead-out profiles for the ot... | 05/31/2005 |
| 6464439 | Low tolerance threaded fastener A threaded member such as a bolt, nut, or pipe has a threaded portion on a body of the member. The threaded portion of the member includes a first threaded section, a second threaded section, and a third threaded section. The first and third threaded sect... | 10/15/2002 |
| 6347917 | Bolt with column and polygonal pillar to prevent seizure 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 and the female screw are fastened together. Another objec... | 02/19/2002 |
| 6120865 | Method for producing molding die for synthetic resin lens barrel having a helicoid and for producing the lens barrel An inner barrel includes a male helicoid, and an outer barrel includes a female helicoid which can engage with the male helicoid of the inner barrel. The included angle of trapezoidal threads of the male helicoid are identical to an included angle of trap... | 09/19/2000 |
| 5876168 | Thread forms for preventing disengagement between male and female screwheads The present invention provides a male screwthread that does not loosen. In a male screwthread that has a thread ridge formed on an outer peripheral surface of an axial portion and a head portion that forms a tool mating means at one end of this axial port... | 03/02/1999 |
| 5868536 | Male screw and method for manufacturing same A male screw which has a protrusion protruding from a thread thereof at least with regard to the normal direction to a flank of the thread. To obtain such male screw, a blank is introduced between rolling dies which are moved relative to one another and i... | 02/09/1999 |
| 5738685 | Osteosynthesis device An osteosynthesis device having a bone screw, particularly a pedicle screw, a fork head that has a groove and a corrective pin seated in the groove of the fork head. A corrective pin is secured against twisting in that the bottom of the groove of the fork... | 04/14/1998 |
| 5628630 | Design process for skeletal implants to optimize cellular response A method of designing a skeletal implant comprises measuring the width, height, and elastic modulus of the bone to be implanted, generating a macro-design of the implant based on the width and height of the bone, and determining a micro-design for the imp... | 05/13/1997 |
| 5624219 | High-strength bolt and high-strength nut A high-strength bolt and a high-strength nut is suited for use in combination with a standardized nut and a standardized bolt, respectively. The high-strength bolt and the high-strength nut have an external triangular thread and an internal triangular thr... | 04/29/1997 |
| 5580199 | Fastening screw A fastening screw is provided with a locking function to prevent loosening thereof after being tightened. In one aspect of the invention, the fastening screw has a head having a bearing face; a plurality of convex portions and concave portions formed on t... | 12/03/1996 |
| 5570983 | Reduced-friction screw A reduced-friction screw is described. The screw requires less turning torque than a conventional screw to drive it into a workpiece. The shaft of the screw has a reduced-thickness thread that produces less sliding friction than a conventional screw havin... | 11/05/1996 |
| 5492442 | Bone screw with improved threads A bone screw having a helical thread with a constant outside diameter and curling around a tapered core. The fine screw tip and thread at the tip of the screw can be inserted into a bone with minimal tearing or cracking of the bone. The thicker core just ... | 02/20/1996 |
| 5417533 | Bone screw with improved threads A bone screw having a helical thread that gradually increases in thickness from the tip to the head of the screw. The thin thread at the tip of the screw can be inserted into a bone with minimal tearing or cracking of the bone. The thicker treads ascendin... | 05/23/1995 |
| 5242252 | Self-locking threaded connection A self-locking connection between a bolt and a nut is obtained by making at least one face of at least one flight of the external thread of the bolt and/or the internal thread of the nut incongruous with the adjacent face of the other thread. This results... | 09/07/1993 |
| 5226766 | Bone screw with improved threads A bone screw having a helical thread that gradually increases in thickness from the tip to the head of the screw. The thin thread at the tip of the screw can be inserted into a bone with minimal tearing or cracking of the bone. The thicker treads ascendin... | 07/13/1993 |
| 5123793 | Tapered locking nut A locking nut is provided by forming a straight cylindrical bore through a body, forming a tap with uniform teeth, the tips of which taper at a shallow angle toward one end of the tap, and tapping said bore with said tap so as to produce a thread having a... | 06/23/1992 |
| 5120171 | Bone screw with improved threads A bone screw having a helical thread that gradually increases in thickness from the tip to the head of the screw. The thin thread at the tip of the screw can be inserted into a bone with minimal tearing or cracking of the bone. The thicker treads ascendin... | 06/09/1992 |
