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| Number | Title | Issue Date |
| 7367768 | Deck screw and installation method for composite lumber A deck screw and an installation method is intended for use with composite lumber, although it can be used with other products. The deck screw may be provided with a head and a shaft that has two regions of varying diameter. The upper region has threads that exceed ... | 05/06/2008 |
| 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 |
| 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 |
| 6994502 | Pole joint screw for a basketball goal system A pole joint screw may be used to connect a first section of a basketball support pole and a second section of a basketball support pole. The pole joint screw may include an elongated body including a first end and a second end, a head disposed on the first end of t... | 02/07/2006 |
| 6989014 | Orthopedic screw and method A screw, driving device, and method are provided for repairing a tissue injury of a patient, such as a meniscal tear in a knee or osteochondritis dissecans. The screw has a root, a distal section having a narrowing cross section toward the distal end, and a thread a... | 01/24/2006 |
| 6736576 | Nut disengagement prevention structure and battery terminal incorporating same In a nut disengagement prevention structure, a bolt has an external thread. A nut which is thread on the bolt has an internal thread. A thread portion which is the closest to a leading end of the bolt has a first minor diameter. Any other portion of the thread of th... | 05/18/2004 |
| 6527777 | Device for repairing a soft-tissue tear and method A fastener, driving device, and method are provided for repairing a tear in soft tissue of a patient, such as a meniscal tear in a knee. The fastener has a distal section having a narrowing cross section toward the distal end and a helical protrusion alon... | 03/04/2003 |
| 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 |
| 6398786 | Strain-inducing conical screw for stimulating bone transplant growth The invention involves a differential and/or conical screw of a variable increasing pitch which is used for the initial mechanical stimulation of a healthy bone, in order to induce a new internal strain and the consequential biological reaction of the bon... | 06/04/2002 |
| 5871486 | Variable pitch bone screw A bone screw having a continuously varying pitch includes a tapered root portion having a relatively small diameter on a leading end of the screw and a larger trailing diameter. The pitch of the screw decreases between the leading and trailing ends thus c... | 02/16/1999 |
| 5829935 | Fastening arrangement A fastener assembly connects two layers of different hardness in a panel. e assembly has a screw and has a mechanism for boring through the softer layer comprised of a collar of material softer than the material of the screw. The screw is tapped into the ... | 11/03/1998 |
| 5562672 | Tapered bone screw with continuously varying pitch A bone screw having a continuously varying pitch includes a tapered root portion having a relatively small diameter on a leading end of the screw and a larger trailing diameter. The pitch of the screw decreases between the leading and trailing ends thus c... | 10/08/1996 |
| 4538940 | Arrangement for force transfer between longitudinally stressed members For the progressive transfer of a tension or traction force from a fiber-reinforced plastic anchoring rod 10 to a threaded sleeve 20 surrounding one end of the rod, sawtooth shaped teeth are provided. The inclined flanks 6 of the teeth are increasingly lo... | 09/03/1985 |
| 4261402 | Captive thread forming terminal screw A self-tapping, self-captivating fastener is provided for engagement in a predrilled aperture to enable the connection of an electrically conductive element such as a lead wire, or spade type terminal attached to the end of such a wire, to a workpiece or ... | 04/14/1981 |
| 4194430 | Thread-forming screw with step taper A thread-forming screw has a point or lead thread portion having a relatively steep entry angle with respect to the screw axis. Adjacent to the point thread is a tapered thread portion of about two to three pitches in axial length. This tapered thread has... | 03/25/1980 |
| 4175555 | Bone screw A bone screw is provided with screw threads which are like-handed but of different pitch on its respective leading and trailing ends. In the more favored embodiment, the pitch of the leading screw thread exceeds that of the trailing screw thread. Such a s... | 11/27/1979 |
| 4150702 | Locking fastener A vibration-resistant prevailing torque fastener combination comprising a conventional first element having a standard thread form with first flank angles and a modified second element having a thread form characterized by second steeper flank angles over... | 04/24/1979 |
| 4036559 | Joint securing an article to particle board A joint structure for use in securing an article to the edge of a piece of composition board includes a screw having an elongated shank with an enlarged head integrally formed with one end thereof and a threaded section formed on the opposite end portion.... | 07/19/1977 |
