Thread Or Shank Structure Patents (Class 411/411)
  • Patent number: 11110742
    Abstract: A wheel assembly for a vehicle includes a face portion and a rim portion. The face portion is formed from an alloy and defines a plurality of spokes extending radially outwardly between a central portion and a proximal bead element. The rim portion is formed of a composite material that defines an annular wall extending between the proximal bead element and a distal bead element. The face portion defines a mating member that is disposed in mating engagement with a rim seat defined by the rim portion. The mating member and the rim seat define a receptor for receiving a pin with said pin including shear resistors oriented to counteract shear forces F between said face portion and the rim portion.
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: September 7, 2021
    Assignee: SUPERIOR INDUSTRIES INTERNATIONAL, INC.
    Inventor: Henry Clay Chenault, III
  • Patent number: 11009059
    Abstract: A screw having a cylindrical shank with a conical tip at one end and a screw head at the other, and at least one thread section therebetween. The thread section has a thread core. On the thread section, multiple successive thread terms are formed on a shell surface of the thread core. In the region of the thread section, multiple elevations are arranged on the outside of the shell surface of the thread core.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: May 18, 2021
    Assignee: AVVIO GMBH & CO KG
    Inventor: Gerhard Hubmann
  • Patent number: 10859109
    Abstract: An installation tool fastener is particularly adapted for fastening a top plate to a roof support member and other structural connections and is particularly adapted for use with an installation tool. The installation tool fastener has a head with a maximum head diameter and a recess for coupling with a drive coupler. The shank of the head has an unthreaded portion and a uniform thread which has a major diameter approximately equal to the maximum diameter of the head. The head preferably has a slight taper. The thread preferably has a 7.5 thread per inch pitch and a thread angle from approximately 25° to 45°. In one embodiment for a 6 inch fastener, the thread length is approximately 5 inches and extends along the tapered distal tip.
    Type: Grant
    Filed: July 9, 2018
    Date of Patent: December 8, 2020
    Assignee: OMG, Inc.
    Inventors: Kevin G. Walters, Mark J. Guthrie, Timothy F. Gillis
  • Patent number: 10598207
    Abstract: A high-strength screw (2) includes a threaded portion (7) having a thread (8). The screw (2) includes an inner core (16) as seen in cross-section of the screw (2), the core (16) having a first hardness. The screw (2) includes an outer surface layer (17) as seen in cross-section of the screw (2). The screw (2) includes an unhardening layer (18) forming the outer surface layer (17) in the threaded portion (7), the unhardening layer (18) having a second hardness being reduced compared to the first hardness of the core (16).
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: March 24, 2020
    Assignee: KAMAX HOLDING GMBH & CO. KG
    Inventors: Gunther Hartmann, Horst Dieterle
  • Patent number: 10495130
    Abstract: Systems and methods are provided for fabricating fasteners. One embodiment is an apparatus that includes a fastener. The fastener includes a head, a cylindrical shank that extends from the head and is dimensioned to engage in a fit with a corresponding hole, and a coating that is discontinuously speckled around a circumference of the shank and extends axially along the shank, leaving irregular portions of a surface of the shank exposed. The coating exhibits a higher lubricity than the surface, and the coating exhibits a higher dielectric withstand voltage than the surface.
    Type: Grant
    Filed: November 11, 2016
    Date of Patent: December 3, 2019
    Assignee: The Boeing Company
    Inventors: Tanni Sisco, Antonio Carlos Rufin, Richard B. Tanner, Dale Winter, Jeffrey Alan Wilkerson, Joe Heeter
  • Patent number: 10385903
    Abstract: A metric self-tapping locking screw comprises a screw head which is connected to a thread locking body by a screw rod. The thread locking body and the self-tapping tip are provided with a screw thread on the surface. The self-tapping tip is arranged at the root of the thread locking body; the screw thread adopts the basic structure of the standard ordinary triangular thread. The flank angle back to the fastened surface is 15-20° and the flank angle of the screw thread facing the fastened surface is 30°. The metric self-tapping locking screw in the Invention make the installed parts to be fastened have higher axial clamping force and static loosing moment, which solves the attenuation problem of axial clamping force and static moment of fastened parts.
    Type: Grant
    Filed: May 5, 2017
    Date of Patent: August 20, 2019
    Assignee: Essence Fastening System (Shanghai) Co., Ltd.
    Inventors: Qinfeng Yi, Huiying Wang, Xin'an Li
  • Patent number: 10371193
    Abstract: A low energy wood screw that may be inserted quickly and using less energy than conventional screws. In various embodiments, the screw may include a countersunk head having a recess for accommodating a driving tool, a tapered neck, a plurality of crown ribs extending over the head and neck, a lubricating coating, main threads with a large thread lead, and lower threads having an asymmetrical profile and extending onto a gimlet point.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: August 6, 2019
    Assignee: Phillips Screw Company
    Inventor: Barry J. Hughes
  • Patent number: 10194950
    Abstract: A bone screw includes an elongate shaft extending longitudinally between a proximal end and an opposing distal end The shaft bounds a first passageway at least partially extending between the proximal end and the distal end. The shaft is comprised of a radiolucent material. A core is disposed within the first passageway of the shaft. The core can be comprised of a radiolucent or radiopaque material. A head is either integrally formed with or secured to the proximal end of the shaft or the proximal end of the core. The head can also bound a second passageway that extends through the head and is aligned with the first passageway. The core can also be disposed within the second passageway.
    Type: Grant
    Filed: September 10, 2009
    Date of Patent: February 5, 2019
    Assignee: Innovasis, Inc.
    Inventors: Brent A. Felix, David N. McKean, David A. Hershgold
  • Patent number: 10124128
    Abstract: An aerosolization apparatus comprises a body having an inlet, an endpiece having an outlet, the endpiece being connectable to the body to define a chamber, wherein the chamber is sized to receive a capsule containing a pharmaceutical formulation in a manner which allows the capsule to move within the chamber. The apparatus further includes a connection mechanism to provide selective connection of the endpiece to the body, wherein a rotational force between the endpiece and the body is needed to connect or disconnect the endpiece from the body, the rotational force being applied about an axis passing through the chamber. When a user inhales, air enters into the chamber through the inlet so that the pharmaceutical formulation is aerosolized within the chamber and the aerosolized pharmaceutical formulation is delivered to the user through the outlet. The connection mechanism prevents inadvertent disconnection of the endpiece from the body.
    Type: Grant
    Filed: November 14, 2002
    Date of Patent: November 13, 2018
    Assignee: BGP Products Operations GmbH
    Inventors: John D. Burr, Jeff R. Wood, Adrian E. Smith, John A. Howard, Fabrizio Niccolai
  • Patent number: 9987061
    Abstract: A plate is provided with feet located laterally of adjacent compression screw holes and absent from about threaded locking holes so as to suspend the plate segment having the threaded locking holes from over the bone. This forces a minimum gap between the threaded holes and the bone, and allows the plate thereat to deflect under loads that can be practically delivered by the locking screws. By allowing the plate to deflect, the threads on the head of the locking screw can be aligned, or timed, with the threads of the threaded plate hole to reduce the required torque to insert the locking screw into the locking hole and the bone.
    Type: Grant
    Filed: January 28, 2014
    Date of Patent: June 5, 2018
    Assignee: Biomet C.V.
    Inventors: Robert Sixto, Jr., Jose Luis Francese, Juergen A. Kortenbach, Andrea Suarez
  • Patent number: 9945412
    Abstract: An R-type thread belongs to the field of fasteners. Both lateral sides of a thread tooth form are a first lead-in side angle line and a second lead-in side angle line respectively. The first lead-in side angle line and the second lead-in side angle line are connected through a transition line. The transition line is concaved in a direction away from a crest. The present technical solution overcomes the defect of the existing threads of being easy to get loose after assembled, providing the R-type thread which has the functions of resisting vibration and looseness.
    Type: Grant
    Filed: February 18, 2016
    Date of Patent: April 17, 2018
    Assignee: Dongguan Guanhong Hardware Technology Co., Ltd.
    Inventor: Yongjiu Huo
  • Patent number: 9903406
    Abstract: A low energy wood screw that may be inserted quickly and using less energy than conventional screws. In various embodiments, the screw may include a countersunk head having a recess for accommodating a driving tool, a tapered neck, a plurality of crown ribs extending over the head and neck, a lubricating coating, main threads with a large thread lead, and lower threads having an asymmetrical profile and extending onto a gimlet point.
    Type: Grant
    Filed: February 24, 2016
    Date of Patent: February 27, 2018
    Assignee: Phillips Screw Company
    Inventor: Barry J. Hughes
  • Patent number: 9784300
    Abstract: The present invention discloses a thread-locking assembly characterized by comprising an externally threaded member with external thread and a threaded member with thread fitting with the externally threaded member, wherein the externally threaded member is movable relative to the threaded member through the engagement of the external thread and the thread, and a blocking member which is arranged outside the externally threaded member. The inside of the blocking member is provided with projections. There is space between the projections and the externally threaded member. When the externally threaded member inclines under force, friction is produced between the externally threaded member and the blocking member to perform the locking function.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: October 10, 2017
    Assignee: HANGZHOU GREAT STAR TOOLS CO., LTD
    Inventor: Yueming Li
  • Patent number: 9752609
    Abstract: A threaded fastener is provided in which a head bearing surface can be in full intimate contact with a counterpart. The threaded fastener is provided with a head (10), and a screw shank (20) extending from the head (10). The screw shank (20) is provided with a parallel thread portion (22) having a complete screw thread formed therein, a neck portion (24) having no screw thread, a transition thread portion (26) having an incomplete screw thread formed to extend from the parallel thread portion (22) toward the neck portion (24) with its root diameter being the same as that of the complete screw thread and with its thread height gradually becoming lower to reach the neck portion, and an underneck rounded portion (28) formed in a corner angle portion between the neck portion (24) and a head bearing surface (11), wherein the neck portion (24) is work hardened with its diameter being narrowed from a root diameter of the parallel thread portion (22).
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: September 5, 2017
    Assignee: TOPURA CO., LTD.
    Inventors: Shigeto Mori, Hiroshi Nakano, Yosuke Okamura, Seiya Hoshino
  • Patent number: 9550544
    Abstract: A bicycle handlebar clamp assembly has a handlebar clamp, a fixing nut, and a fixing bolt. The fixing nut includes a threaded bore having a bolt entrance opening and a bolt exit opening. The fixing nut defines a bolt shaft receiving space disposed adjacent the bolt exit opening. The fixing bolt includes a head and a shaft extending from the head. The shaft has a non-threaded portion disposed between two threaded portions. One of threaded portions is disposed closer to the head of the fixing bolt than the other threaded portion. The threaded portions are dimensioned to threadedly engage the threaded bore of the fixing nut. The non-threaded portion has a axial length that is greater than the axial length of the threaded bore of the fixing nut.
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: January 24, 2017
    Assignee: Shimano Inc.
    Inventors: Toshihiko Takeuchi, Yoshimitsu Miki, Shinya Hirotomi
  • Patent number: 9155057
    Abstract: Femtocell synchronization is disclosed, in which a femtocell transmits a request over an out-of-band (OOB) link to a proximate mobile device for synchronization assistance. In response to the request, the mobile device transmits an access probe to a serving macro base station. The femtocell detects the access probe and uses aiding information to decode the access probe to determine the timing and/or frequency information. The femtocell uses this timing and/or frequency information for its synchronization.
    Type: Grant
    Filed: May 1, 2012
    Date of Patent: October 6, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Bongyong Song, Kaushik Chakraborty, Samir Salib Soliman
  • Patent number: 9046120
    Abstract: A threaded fastener having a threaded portion with a ratio of pitch diameter to minor diameter less than 1.28, and the threaded portion with a major diameter portion, a leading flank having a normal angle between 10° and 60°, a trailing flank having a normal angle between 1° and 30°, and a shank portion extending between the trailing flank and the leading flank of adjacent threads of a arcuate surface having a radius greater than the thread height. The arcuate surface forming the shank portion may have a radius between 1.2 and 1.8 times the thread height.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: June 2, 2015
    Assignee: Infastech Intellectual Properties Pte. Ltd
    Inventors: Cheng Siong Phua, Senthilukumaran Kothandaraman
  • Publication number: 20150107072
    Abstract: A fatigue resistant turbine through bolt formed from a base material covered by a first surface modification and a second surface modification is disclosed. The first surface modification may be in contact with the base material and, in at least one embodiment, may be a low plasticity burnished layer that increases the residual compressive stresses on an outer surface of the turbine through bolt. The second surface modification may cover the first surface modification and, in at least one embodiment, may be a spinel oxide layer on the low plasticity burnished layer. The second surface modification may be positioned on the first surface modification or on the bare turbine through bolt contact surface without low plastiocity burnishing on the shaft of the turbine through bolt. The first and second surface modifications reduce the likelihood of fretting fatigue failures.
    Type: Application
    Filed: October 22, 2013
    Publication date: April 23, 2015
    Inventors: Kazim Ozbaysal, Zafir A. M. Abdo, Kenneth K. Starr, Sachin R. Shinde
  • Publication number: 20150101462
    Abstract: An installation tool fastener is particularly adapted for fastening a top plate to a roof support member and other structural connections and is particularly adapted for use with an installation tool. The installation tool fastener has a head with a maximum head diameter and a recess for coupling with a drive coupler. The shank of the head has an unthreaded portion and a uniform thread which has a major diameter approximately equal to the maximum diameter of the head. The head preferably has a slight taper. The thread preferably has a 7.5 thread per inch pitch and a thread angle from approximately 25° to 45°. In one embodiment for a 6 inch fastener, the thread length is approximately 5 inches and extends along the tapered distal tip.
    Type: Application
    Filed: September 9, 2014
    Publication date: April 16, 2015
    Inventors: Kevin G. Walters, Mark J. Guthrie, Timothy F. Gillis
  • Publication number: 20150093213
    Abstract: A fastener includes a cylindrical shaft located between a head and a tapered point, threads integrally extending from the shaft and extending along a portion of a length thereof, and a burr cutoff area near the tapered point and including flank surfaces therein forming an angle greater than 90° therebetween. A flattened area can be located between the flank surfaces.
    Type: Application
    Filed: September 29, 2014
    Publication date: April 2, 2015
    Applicant: SFS INTEC HOLDING AG
    Inventor: Daniel Scheerer
  • Patent number: 8985926
    Abstract: Disclosed herein is a tapping screw (1) exerting an excellent anti-loosening effect with regard to a workpiece made of a soft material such as resin and an aluminum alloy. The tapping screw (1) includes a shaft part (3), and a normal thread (10) which is formed on the outer circumferential surface of the shaft part. A clearance groove (20) is formed by cutting out a portion of a ridge of the normal thread, and an engaging protrusion (30) is provided on a bottom of the clearance groove along a portion or an entirety of an edge of the bottom that continuously extends from a flank surface of the normal thread. The tapping screw (1) exerts an excellent anti-loosening effect even when a workpiece expands, contracts or oscillates because the engaging protrusions (30) are embedded into portions of the workpiece which have been embedded into the clearance grooves (20).
    Type: Grant
    Filed: May 20, 2011
    Date of Patent: March 24, 2015
    Assignee: Nitto Seiko Co., Ltd.
    Inventors: Sinnichi Hamano, Naoki Nishimura, Kinya Kowada, Kazuhiro Ueba
  • Publication number: 20150063944
    Abstract: The present invention relates to headed push-in fasteners of the type produced by Penn Engineering & Manufacturing Corp. known as TackPins and TackScrews. More specifically it relates to a Tack Pin or a Tack Screw with a Belleville head that provides the functionality of a Bellville washer without needing a separate part. When installed, the compression of the Bellville shaped head will cause a permanent loading to be applied under the head of the fastener, essentially creating a clamping force to the members being attached.
    Type: Application
    Filed: August 28, 2014
    Publication date: March 5, 2015
    Inventors: Michael J. Maloney, Brian Bentrim, William McDonough
  • Publication number: 20150050101
    Abstract: An anti-split wood screw includes a screw head and a shank. The shank has a tip portion connected to a distal end thereof, a first thread extended helically from the front end of the tip portion toward the distal end of the shank, a second thread extended helically from the distal end of the first thread toward the shank, and a third thread extended helically from the distal end of the second thread toward the middle of the shank. The second thread has a plurality of serrated cutting edges and teeth peaks that are alternately disposed. The anti-split wood screw thus formed can tap an object through the first thread, cut off the chips generated during tapping through the second thread, and channel out the chips through the third thread without being clogged by the chips, hence can avoid the object from splitting and damaging.
    Type: Application
    Filed: August 15, 2013
    Publication date: February 19, 2015
    Applicant: BI-MIRTH CORP.
    Inventor: Sheng-Tsai SHIH
  • Publication number: 20150050102
    Abstract: An anti-loose screw (20) includes a shank (24) having an external thread (28) with a thread angle of 63° to 68° between two flanks (34, 36) extending between a crest (30) and a root (32). A first angle (A) between one of the flanks (34, 36) and an axis (Y) extending perpendicularly to a longitudinal axis (X) of the shank (24) and passing through the crest (30) is in a range between 34° and 40°. A second angle (B) between the other flanks (34, 36) and the axis (Y) is in a range between 25° and 29°. The anti-loose screw (20) can engage with an object (40) having an internal thread (42) with a thread angle of 60° to provide an interference fit and can be formed by two dies (120, 140) each including a thread forming configuration (128, 148) having correspondingly formed ridges (130, 150) and valleys (136, 156).
    Type: Application
    Filed: August 16, 2013
    Publication date: February 19, 2015
    Inventor: Hsiao-Shun Lu
  • Publication number: 20150035273
    Abstract: An apparatus is disclosed that forms a piping thread form of four threads per inch pipe (TPI). The thread form is configured to have a load flank, a load flank angle, a stab flank, a stab flank angle, a crest, and a root. Hydrostatic pressure tests using the 4-round thread form at pressures of 4,500 psi and greater resulted in failures due to thread leaks. Tensile tests using the 4-round thread form at loads of 187,400 lbs. and greater resulted in shearing at forces of 3,535 psi and greater.
    Type: Application
    Filed: July 31, 2014
    Publication date: February 5, 2015
    Inventor: Lawrence MOORE
  • Patent number: 8944734
    Abstract: The present invention pertains to a bimate screw providing with a first section alternating with a second threaded section; wherein, the second threaded section has a smaller outer diameter than the first threaded section, and further a plurality of concavities are disposed on each thread of the second threaded section for defining two flanks therein. In this manner, both the first and the second threaded sections facilitate to sever and shatter cuttings so as to reduce the screwing resistance and prevent the object from being damaged under the accumulation of cuttings; simultaneously, the bimate screw effectively attains to a good resistance of extraction from the object by the concavities receiving the remaining cuttings which are not guided out of the object.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: February 3, 2015
    Assignee: Taiwan Shan Yin Int'l Co., Ltd.
    Inventor: Guo-Cai Su
  • Publication number: 20150028142
    Abstract: A nut (23) and a re-usable liner bolt (17) for a grinding mill is disclosed. The nut is shaped to be received in the recess (5) of a mill liner plate (3), this being the recess which normally receives the head of a conventional liner bolt. The nut is provided with a blind threaded hole (25). The re-usable bolt has a stepped shank (18) and a thread (20) on its free end. The bolt (17) is inserted from the exterior of the mill and engages the nut (23). The fines produced during grinding cement the nut to the liner but do not cement the bolt to the liner or the bolt to the nut. The head of a conventional liner bolt is located within the mill and its conventional nut is located exterior of the mill, whereas the re-usable bolt (17) has its head exterior of the mill and its nut (23) interior of the mill. Methods of assembly and dis-assembly of the bolt (17) and nut (23) are also disclosed.
    Type: Application
    Filed: February 6, 2013
    Publication date: January 29, 2015
    Inventor: Dale Coray
  • Publication number: 20150023761
    Abstract: The present invention provides a screw/bolt thread profile geometry that is particularly suited to forming a mating nut thread when the screw is inserted in to a plain diameter hole, in the anchor and rotated in a manner by which the thread helix angle will cause the relative axial forward movement, of the screw/bolt, into the anchor. This rotation and relative axial movement will be the prime mover in developing the nut thread that has mating contact with the screw/bolt thread.
    Type: Application
    Filed: July 16, 2014
    Publication date: January 22, 2015
    Inventor: Alan Pritchard
  • Publication number: 20140366473
    Abstract: A corrugated sheet in a roof construction or wall construction is fastened to an underlying support structure by a screw extending through the sheet or wall construction and into the support structure. The screw includes a head, a washer, and a threading. The washer includes an upper metallic cap and an underlying sealant.
    Type: Application
    Filed: September 20, 2012
    Publication date: December 18, 2014
    Inventor: Claus Hornstrup Dissing
  • Patent number: 8905694
    Abstract: This invention relates to a self-locking screw (16; 116) in which the flanks (18; 118), which are loaded when the screw (16; 116) is screwed, are provided with an arched portion (20; 120).
    Type: Grant
    Filed: November 24, 2011
    Date of Patent: December 9, 2014
    Assignee: Ruia Global Fasteners AG
    Inventor: Stephan Esper
  • Publication number: 20140356099
    Abstract: A fastener arrangement has first and second threaded members. The fastener arrangement includes the first threaded member having threads that extend from a first end to a second end. The threads have a thread contour that is provided by load and clearance flank surfaces that are joined to one another by crests and roots. The crest provides a crest diameter. A root provides a root diameter and is arranged between adjoining threads. At least one thread near the first end has a weakened thread contour that decreases rigidity of the one thread compared to other threads. The threads extend along an axis. The crest diameter of the second threaded member varies and lies along crest angle relative to the axis and comprises a second threaded member that has load flank surfaces that are engaging the load flank surfaces of the first threaded member at thread contact interfaces. The thread contact interfaces are smaller towards the second end than thread contact interfaces toward the first end.
    Type: Application
    Filed: August 14, 2014
    Publication date: December 4, 2014
    Inventors: Daniel Benjamin, Kaliya Balamurugan, Daniel R. Kapszukiewicz
  • Patent number: 8899898
    Abstract: In the case of a screw having at least one thread (26) that is formed by a rolling process, especially a flat-die rolling process, whereby the thread (26) consists of two ridges of material (28a, 28b) which are shaped from a blank (12) by means of cold-forming during the rolling process in such a way that the thread has a closing crease (32) where the ridges of material (28a, 28b) meet each other, it is provided that the closing crease (32) is situated in the area of a flank (30a, 30b) of the thread (26).
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: December 2, 2014
    Assignee: Hilti Aktiengsellschaft
    Inventors: Falk Rosenkranz, Corinna Achleitner
  • Publication number: 20140321924
    Abstract: A detachable bolt includes a bolt body being a round bar and having an inner end and an outer end; a periphery of the inner end being formed with at least one screw section with threads thereon and at least one circular section; each circular section having a smooth surface with a plurality of protrusions. The outer end of the bolt may be a structure like that of the inner end, or may have threads thereon, or may be smooth, or may be sleeved by a sleeve. In detaching process, other than the gluing material in the hole will break, the object to be retained and the retaining wall will not be destroyed. The bolt body can be removed from the object and the wall easily without great forces applied thereto. Furthermore, the wall and the object to be retained can be restored to the original outlook easily.
    Type: Application
    Filed: April 25, 2013
    Publication date: October 30, 2014
    Inventor: Ku-Hsi Hu
  • Publication number: 20140286728
    Abstract: A fastener includes a shank having a point at a first end and a second, head end. One or more prolate cross-section regions is formed in the shank. Prolate cross-section regions may be formed in a threaded section and/or a thread free section of the fastener. Each prolate cross-section may have a polar diameter greater than the cylindrical diameter of the region in which it is formed and an equitorial diameter smaller than the corresponding cylindrical diameter of the region in which it is formed. Two generally adjacent prolate cross-section regions have cross-sections offset with respect to each other by an angle between zero and ninety-degrees.
    Type: Application
    Filed: March 21, 2013
    Publication date: September 25, 2014
    Applicant: SIMPSON STRONG-TIE COMPANY, INC.
    Inventor: Jeremy Scott Park
  • Patent number: 8834086
    Abstract: The threaded engagement device includes a female thread portion and a male thread portion, which are engaged to each other through a plurality of threads formed along the axis direction. Each thread of the female thread portion and the male thread portion of the threaded engagement device includes a crest, a root, a stab flank and a load flank. The root of the female thread portion has a straight portion extending along the axis direction and a concave rounded portion. The root of the male thread portion has a concave rounded portion, wherein the radius of curvature of the rounded portion formed in the root of the male thread portion is larger than the radius of curvature of the rounded portion formed in the root of the female thread portion.
    Type: Grant
    Filed: January 15, 2013
    Date of Patent: September 16, 2014
    Assignee: TaeguTec, Ltd.
    Inventors: Chang Hee Choi, Kil Sung Kim
  • Publication number: 20140234052
    Abstract: A hybrid fastener comprises a composite body having a tip, and a metal sleeve surrounding and locked to the tip.
    Type: Application
    Filed: February 21, 2013
    Publication date: August 21, 2014
    Applicant: THE BOEING COMPANY
    Inventor: THE BOEING COMPANY
  • Patent number: 8777969
    Abstract: Surgical fasteners, including tacks are disclosed for fastening a surgical mesh to underlying tissue during surgical procedures to repair body tissue, such as in hernia repair. Such tacks can include a head, a elongated body portion having a distal end and a proximal end, and an anchoring element on an outer surface of the body portion for inhibiting the removal of the tack from the mesh and body tissue.
    Type: Grant
    Filed: October 22, 2002
    Date of Patent: July 15, 2014
    Assignee: Covidien LP
    Inventor: Helmut Kayan
  • Publication number: 20140193222
    Abstract: The invention relates to a self-tapping screw (1) consisting of a low-strength non-ferrous material, having a screw body (3) which is provided, at least in regions, with a coating (5), wherein the coating (5) is formed from an elastomer or polymer material enriched with fillers.
    Type: Application
    Filed: March 25, 2013
    Publication date: July 10, 2014
    Applicant: NEDSCHROEF FRAULAUTERN GMBH
    Inventors: Jean Joseph Egele, Joerg Michael Wendels
  • Publication number: 20140169911
    Abstract: The invention provides a sealer to be used for a bolt including a sprayed preservative coating coated onto at least a threaded portion. The sealer contains a wax therein in the range of 1 to 10 mass % both inclusive.
    Type: Application
    Filed: December 17, 2012
    Publication date: June 19, 2014
    Applicants: FUJI ENGINEERING CO., LTD., WEST NIPPON EXPRESSWAY COMPANY LIMITED, FUJIGIKEN CO., LTD.
    Inventors: Masanobu SUGIMOTO, Yasuo MURAYAMA, Kenichi YAMADA, Yasutoshi YAMADA
  • Patent number: 8747042
    Abstract: A threaded fastener includes a shank having a first, threaded portion and a hardened thread portion. The shank includes a thread extending outwardly from a shank body over a first length of the shank. A second portion of the shank includes a groove positioned coincident with the thread and including a turn ratio equal to a turn ratio of the thread. The shank comprises corrosive resistant stainless steel. A coil of hardened steel engages the groove to fill the groove along the second portion.
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: June 10, 2014
    Assignee: Simpson Strong-Tie Company, Inc.
    Inventors: Gerald W. Hagel, Joel Houck
  • Publication number: 20140105705
    Abstract: Disclosed herein is a tapping screw (1) exerting an excellent anti-loosening effect with regard to a workpiece made of a soft material such as resin and an aluminum alloy. The tapping screw (1) includes a shaft part (3), and a normal thread (10) which is formed on the outer circumferential surface of the shaft part. A clearance groove (20) is formed by cutting out a portion of a ridge of the normal thread, and an engaging protrusion (30) is provided on a bottom of the clearance groove along a portion or an entirety of an edge of the bottom that continuously extends from a flank surface of the normal thread. The tapping screw (1) exerts an excellent anti-loosening effect even when a workpiece expands, contracts or oscillates because the engaging protrusions (30) are embedded into portions of the workpiece which have been embedded into the clearance grooves (20).
    Type: Application
    Filed: May 20, 2011
    Publication date: April 17, 2014
    Applicant: NITTO SEIKO CO., LTD.
    Inventors: Sinnichi Hamano, Naoki Nishimura, Kinya Kowada, Kazuhiro Ueba
  • Patent number: 8696284
    Abstract: A threaded rod comprises a single coarse thread having flattenings on opposite sides forming thread sections on opposite sides. At least one of the thread sections on one side of the threaded rod is omitted.
    Type: Grant
    Filed: April 21, 2011
    Date of Patent: April 15, 2014
    Assignee: Stahlwerk Annahutte Max Aicher GmbH & Co. KG
    Inventor: Maximilian Aicher
  • Patent number: 8696285
    Abstract: A screw coupling between two bodies, one having an external screw thread and another having an internal screw thread complementary thereto, which screw threads are superimposed onto two base surfaces monotonously narrowing and widening respectively in the direction of a central axis, the longitudinal section of each of these screw threads relative to the central axis being a periodic univalent function which is continuous at least at the inflection points. The screw coupling has the following features: the first and second derivatives of the longitudinal section of each screw thread along the base surface is a continuous function; the second derivative of the longitudinal section of each screw thread relative to the central axis is a continuous function at least in the region of the inflection points; and the screw threads are in mutual contact over a substantial surface area differing from line contact.
    Type: Grant
    Filed: April 2, 2009
    Date of Patent: April 15, 2014
    Assignee: Bronswerk Radiax Technology B.V.
    Inventor: Augustinus Wilhelmus Maria Bertels
  • Patent number: 8696281
    Abstract: A threaded connector includes a base and a threaded male portion projecting axially outward from the base. The threaded male portion is adapted to mate with an associated threaded female socket. The threaded male portion includes a helical thread comprising three sections: (i) a lead-in section; (ii) a transitional cam-locking section; and, (iii) a friction-locking section. The friction-locking section is located adjacent the base, the lead-in section is spaced from the base, and the transitional cam-locking section connects the lead-in section to the friction-locking section. The helical thread includes a tip and a root. The lead-in section is defined by a first major diameter at the tip of said thread and the friction-locking section is defined by a second major diameter at the tip of the thread. The second major diameter is greater than the first major diameter.
    Type: Grant
    Filed: September 20, 2010
    Date of Patent: April 15, 2014
    Inventor: Erwin Tomm
  • Patent number: 8684646
    Abstract: A thread forming fastener for threading into a nut anchor of a pliable material wherein there is produced during the driving of the fastener a combination of forces that encourages the nut anchor material to flow smoothly and to develop a mating thread in the nut anchor that minimizes stress cracking and radial hoop stress as the mating thread is being formed. The fastener comprises a drive head and a shank extending from the head and having a longitudinal axis, the shank including a core and a thread having a selected axial pitch, a selected thread height and a profile which in axial cross-section includes a leading face, a trailing face and a tip. The leading face is composed of a radially inner concave portion having a first radius and which transitions smoothly to a radially outer convex portion having a second radius, the transition occurring at a point on the common tangent to those portions.
    Type: Grant
    Filed: August 12, 2008
    Date of Patent: April 1, 2014
    Assignee: Research Engineering & Manufacturing Inc.
    Inventor: Alan Pritchard
  • Patent number: 8678732
    Abstract: A system for fixing an accessory on a metal frame for doors, windows, and the like, includes a screw having a head and a self-tapping threaded stem with metric thread, the end of which opposite to the head is tapered. A ratio between the external diameter of the self-tapping stem of the screw and the diameter of the through hole of the wall of the frame is approximately between 1.4 and 1.25, and the ratio between the diameter of the through hole of said wall and its thickness is approximately between 2.5 and 5.5 and more preferably between 3 and 5.
    Type: Grant
    Filed: January 12, 2012
    Date of Patent: March 25, 2014
    Assignee: SAVIO S.p.A.
    Inventor: Aimone Balbo Di Vinadio
  • Publication number: 20140079510
    Abstract: An earth bolt is capable of achieving electrical connection and watertight sealing and of holding fragment of a coating so that the fragments of coating may not be scattered. The earth bolt can be electrically connected to a member coated with an insulating film. The earth bolt has a head and a threaded body. The head is provided on its bearing surface with an annular ridge protruding from the bearing surface of the head so as to coaxially surround the threaded body and capable of scraping off the insulating film.
    Type: Application
    Filed: April 4, 2012
    Publication date: March 20, 2014
    Applicant: IWATA BOLT KABUSHIKI KAISHA
    Inventors: Nobuhide Suzuki, Nobuyoshi Suzuki, Mitsunari Ono
  • Patent number: 8671547
    Abstract: A fastening member that exerts a high loosening-inhibition effect is provided. A fastening member 1 has an upper portion 11 on a thread top portion side and a lower portion 12 on a thread root side in at least a part of a thread 10. The upper portion 11 and the lower portion 12 have following constructions. A pressure-side flank surface 13 and a play-side flank surface 14 are formed on the upper portion 11. A pressure-side side surface 15 and a play-side side surface 16 are formed on the lower portion 12. The pressure-side side surface 15 is formed to be continuous from a lower end of the pressure-side flank surface 13.
    Type: Grant
    Filed: February 10, 2011
    Date of Patent: March 18, 2014
    Assignees: Art Screw Co., Ltd., City of Nagoya
    Inventors: Kou Matsubayashi, Takushi Miyake
  • Patent number: 8632288
    Abstract: An anti cross-thread bolt which prevents the bolt from being cross-threaded without the need for correcting its posture by a pilot portion. The bolt is screwed into a female screw having a nominal diameter D and an inner diameter D1. At the tip of a regular thread part formed on the bolt shank, a small-diameter thread part is formed by one pitch or more, the small-diameter thread part having an outer diameter d which is larger than an inner diameter D of the female screw and smaller than (D+D1)/2. When the bolt is obliquely screwed into the female screw, the small-diameter thread part is brought into contact with the female screw at one point, but the bolt is allowed to rotate around the point. Thus, the occurrence of cross-threading is prevented.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: January 21, 2014
    Assignee: Aoyama Seisakusho Co., Ltd.
    Inventors: Satoshi Konagaya, Sadayoshi Hasegawa
  • Patent number: 8616816
    Abstract: A fastener for composite or plastic material having a dense composition employs a head which has a socket and a recessed underside and a lower rim. In one embodiment, the shank has an upper portion with an enlarged diameter and a left hand thread while the lower portion has a tri-lobed configuration and is traversed by a right hand thread. The right hand thread may have a plurality of notches which, in one embodiment, are arranged in a spiral array. One embodiment of a fastener has longitudinally spaced rings which project from an enlarged diameter portion of the shank. The lower portion of the shank has a thread with a plurality of notches. The rings have a major diameter and spacing greater than the major diameter and spacing of the thread.
    Type: Grant
    Filed: April 2, 2009
    Date of Patent: December 31, 2013
    Assignee: Handy & Harman
    Inventors: Joseph A. Pieciak, Jr., Richard Belinda, Peter Barenski, Jr., Tad A. Weiss