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Class 411/426 - Tapered


Subclass of Class 411 - Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
Definition: Subject matter wherein the shank defines a conical surface.
No. of patents: 78
Last issue date: 05/06/2008


1    
NumberTitleIssue Date
7367768Deck 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
7322978Bone 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
7255523Dual threaded screw for composite materials
An improved dual threaded fastener for composite materials having a head and a shaft. The head is affixed to one end of the shaft and the shaft includes a point at its other end. The shaft includes an upper threaded portion and an upper threaded portion. The diamete...
08/14/2007
7156879Femur fixture and set of femur fixtures
A femur fixture for a hip-joint prosthesis comprising an intraosseous anchoring structure of a generally circular cross-section for screwing laterally into a complementary bore drilled laterally into the neck of a femur after resection of the femur head to an anchor...
01/02/2007
6966737Deck screws suitable for use with composite lumber
The present invention is directed to a deck screw intended for use with composite lumber, although it can be used with other wood products, such as pressure treated lumber. The deck screw of the present invention may be provided with a head and a shaft that has two ...
11/22/2005
6846142Screw for screwing into a material of low strength
Screw made of plastic for screwing into a material of low strength, e.g. rigid foam plastic, having a deep thread compared with the screw shank, the screw shank running out conically into a screw point. The screw has the following features: 1. the depth...
01/25/2005
6824331Screw form anchor device
A screw form anchor device (10) intended for screwed penetration into a host material. The anchor device (10) includes a body (11) having a manipulating end (12) and a distal end (13). A screw thread (22) is formed by a plur...
11/30/2004
6796761Bolt and nut
A bolt is provided with a head part and a shank part. The shank part includes a first constant diameter cylindrical part, a transition part, a cylindrical connection part, and a second constant diameter cylindrical part concentrically extending from the first consta...
09/28/2004
6494655Self-tapping screw and method for joining thin workpieces
A threaded self-tapping screw for joining thin workpieces having a tapered root portion adjacent to the head of the screw. A plurality of threads are disposed on the body and the tapered root portion of the screw such that the radial distance from the cen...
12/17/2002
6419436Auger-like drywall screw
The present invention relates to a novel screw for use with dry wall and for hanging articles therefrom. This invention provides a screw with a head adapted for engagement with a driving tool, a shank whose diameter decreases from the head to a distal end...
07/16/2002
6264677Wedge screw suture anchor
A suture anchor for facilitating the anchoring of soft tissue to a bony site includes a distal sharpened tip, and intermediate threaded section and a proximal drive head. The drive head is configured to receive a socket drive tool and has a suture-receivi...
07/24/2001
6261040Self-tapping fastener
A self-tapping fastener is provided. The fastener is formed from a blank having an odd number of lobes along a cross section taken perpendicular to its axis of rotation. The lobes define a relatively high out-of-round cross section along a tapered thread-...
07/17/2001
6250866Self-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
6158938Anti-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
6120227Self-aligning bolt
Disclosed is a bolt which has been contemplated to solve problems of prior bolts and to provide the bolt adapted to corrects its own position in a precise direction to permit normal fastening without failure such as slipping, seizure or the like even when...
09/19/2000
6089806Blank for self-tapping fastener
A blank for a self tapping fastener, and corresponding fastener is provided. The blank defines an odd number of lobes along a cross section taken perpendicular to its axis of rotation. The lobes define a relatively high out-of-round cross section along a ...
07/18/2000
6086303Distance screw
The spacer screw has a first thread section (1) which can be screwed into a base element, a head section (3) which can be introduced into the construction element, a shank section (2) formed between the head section and the first thread section and a rece...
07/11/2000
6083227Bone screw and method for manufacturing said screw
Bone screw for osteosynthesis devices comprising a screwing head and a screw-threaded shank having a transition portion having a variable profile between two shank parts of different profiles. The threading has a constant pitch and a constant outside diam...
07/04/2000
6077013Bolt equipped with pilot
A bolt provided with a pilot of the present invention is formed with a pilot portion, on the front end side of a shank portion, having an axis aligning with an axis of the shank portion. The pilot portion is formed with a guide thread portion continuous t...
06/20/2000
6071051Casting repair apparatus and method
A method and apparatus for repairing a casting in a cold metal repair process includes a plurality of drilling fixtures which facilitate the creation of one or more lock receiving recesses positioned generally transverse to the casting crack. The lock rec...
06/06/2000
6045312Fastener having primary and secondary threads
In a fastener having a head and a shank having a generally cylindrical portion with a proximal end adjoining the head and with a distal end, the shank has a primary thread formation and a secondary thread formation. The primary thread formation has a gene...
04/04/2000
6030162Axial tension screw
A screw having a root and threads formed on the root. The screw is configured to generate and/or maintain axial compression between threads formed in leading and trailing sections of the screw either by virtue of pitch differential in the threads or the w...
02/29/2000
5964768Tapered 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...
10/12/1999
5951560Wedge orthopedic screw
An orthopedic interference screw for compression anchoring a bone graft in a bore formed in a bone mass. The interference screw includes a biocompatible body with a root. A screw thread is formed over substantially all of the root. The screw thread includ...
09/14/1999
5921735Lobular fastener with rectilinear pitch profile
A fastener is constructed having four thread zones constructed over the length of the fastener, from the head to the tip, namely a ridged cylindrical holding zone, a ridged cylindrical transition thread forming zone, a rectilobular tapered thread forming ...
07/13/1999
5897280Self perforating and thread forming connecting element
A self perforating (punching) and thread forming connecting element such as a screw having a screw shaft 2 and screw tip 6 which tapers to a pointed end 4 as well as a single or multiple thread 8 which extends at least partially along the screw shaft 2 an...
04/27/1999
5890861Retaining element for multipart connection units such as screw connections and the like
A retaining element to hold together a multipart preassembled screw connection or the like until the assembly can be further processed or assembled in a later step. The retaining element includes a ring section to be installed on a free part of the multip...
04/06/1999
5891146Wedge orthopedic screw
An orthopedic interference screw for compression anchoring a bone graft in a bore formed in a bone mass. The interference screw includes a biocompatible body with a root. A screw thread is formed over substantially all of the root. The screw thread includ...
04/06/1999
5882162Driving screw
A drive screw comprises: a head portion; a shank; and a helical thread portion extending along almost all the length of the shank, wherein an outside diameter of the drive screw including the thread portion being formed so as to be reduced from a portion ...
03/16/1999
5868356Fastener system using biangular countersink geometry
A biangular countersink in a skin panel to be joined to an underlying support member includes a frustoconical base portion defining a large included angle and an extremely shallow outer portion cut at a very small acute included angle. Fasteners usable wi...
02/09/1999
5863167Drilling screw for fixing gypsum board to thin steel plate
The present invention supplies a drilling screw which can fix a gypsum board to a thin steel plate by utilizing an impact-type air driven screw fastener and execution method for fixing efficiently the gypsum board to the thin steel plate. The drilling scr...
01/26/1999
5779417Fastener having primary and secondary threads
In a fastener having a head, which may have having torque-absorbing ribs, and a shank, which is unitary with the head and which has a primary thread formation and a secondary thread formation. The primary thread formation, which defines axially spaced thr...
07/14/1998
5738685Osteosynthesis 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
5704750Multiple use screw with tapered threads
A threaded screw has a first segment adjacent the screw head (10) with nontapered sides for engaging metal automotive fastener clip nuts (30) and a second segment with tapered sides for engaging plastic bosses (24). The second segment is adjacent the firs...
01/06/1998
5599149Self-tapping floor screw
A self-tapping screw fastener includes a shank having first and second ends and a head disposed at the second end of the shank. The shank has a tapered portion of a predetermined axial length adjacent the first end, and the tapered portion terminates at t...
02/04/1997
5492442Bone 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
5456685Interference screw having a tapered back root
An dual tapered orthopedic fixation screw is used to anchor ligament grafts inside a bore in a bone mass. The fixation screw includes a root portion having a front section, a cylindrical center section and a back section. A screw thread is formed over sub...
10/10/1995
5447401Fastener for securing a structural component to a carpet pad
A fastener is formed with an elongated threaded portion defined by a central shank and a thread formed on the shank, a neck collinear with the shank, and a head provided with a recess adapted to receive a tool for rotating the fastener. The shank of the t...
09/05/1995
5425407Screw plug for tire punctures
A repair plug for sealable insertion into puncture holes in tires has a conical shank carrying one or more buttress threads which may extend onto a head portion adapted for rotation with a screwdriver....
06/20/1995
5417533Bone 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
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