US20070245863A1 - Screw head and tool for use therewith - Google Patents

Screw head and tool for use therewith Download PDF

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Publication number
US20070245863A1
US20070245863A1 US11/471,551 US47155106A US2007245863A1 US 20070245863 A1 US20070245863 A1 US 20070245863A1 US 47155106 A US47155106 A US 47155106A US 2007245863 A1 US2007245863 A1 US 2007245863A1
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US
United States
Prior art keywords
tool
screw head
screw
tapered
engagement section
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11/471,551
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English (en)
Inventor
Jone Edland
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of US20070245863A1 publication Critical patent/US20070245863A1/en
Priority to US11/979,731 priority Critical patent/US7730812B2/en
Priority to US12/762,759 priority patent/US8739660B2/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/44—Making machine elements bolts, studs, or the like
    • B21K1/46—Making machine elements bolts, studs, or the like with heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B15/00—Screwdrivers
    • B25B15/001—Screwdrivers characterised by material or shape of the tool bit
    • B25B15/004—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section
    • B25B15/005—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section with cross- or star-shaped cross-section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
    • F16B23/0007—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool
    • F16B23/003—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool star-shaped or multi-lobular, e.g. Torx-type, twelve-point star
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
    • F16B23/0053—Specially shaped nuts or heads of bolts or screws for rotations by a tool with a conical or prismatic recess for receiving a centering pin of the tool apparatus
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S411/00—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
    • Y10S411/919—Screw having driving contacts

Definitions

  • the invention relates to a screw head having a hexalobular slot in its upper surface, to a tool for use with this screw head, and to a system comprising a screw head and a tool for use therewith.
  • U.S. Pat. No. 6,951,158 showed a tool to engage a screw head. This configuration had advantages in that it restricted the screw from wobbling, and prevented the driving bit from camming out of the screw recess. However, the tool and screw head could not interact so that the screw was ‘stick-fit’ and retained on the tool without the possibility of falling off. The tool engaged the screw head within a hexalobular slot with surfaces that were directly parallel to each other.
  • the invention provides a screw head having a hexalobular slot in the upper surface of the screw head, an upper peripheral wall of hexalobular planform extending down into the screw head, the upper peripheral wall being parallel or near parallel to the axis of the screw, a sloping transition surface extending downwardly and inwardly with respect to the lower edge of the upper peripheral wall, and a tapered recess extending downwardly from the lower edge of the sloping transition surface, in which the dimensions of the screw head are such that when the screw head is engaged by a tool having upper and lower engagement sections, the lower engagement section is tapered, and there is a ‘stick fit’ between the surface of the tapered recess and the external surface of the lower tapered engagement section, and there is no engagement with the sloping transition surface.
  • tapered recess is of circular planform.
  • the invention provides a tool for use with a screw head having a hexalobular slot in its upper surface, and according to the above description, in which the tool has upper and lower engagement sections, and the lower engagement section is of smaller diameter is and tapered downwardly with respect to the axis of the screw to which the tool is to engage, and in which the upper and lower engagement sections are connected with a transition surface which is tapered with a large angle with respect to the axis of the screw.
  • the upper engagement section is tapered downwardly at an angle with respect to the axis of a screw to which the tool is to engage.
  • the upper engagement section is tapered at an angle of 0.1 to 5 degrees.
  • the upper engagement section is tapered at an angle of between 1 and 2 degrees.
  • the invention provides a system comprising a screw head having a hexalobular slot in its upper surface and a tool for use with the screw head, in which in a lower engagement section of the tool, the tool is tapered at the same angle as a recess in the screw, so that the tool can make a ‘stick fit’ connection with the screw.
  • the tool in an upper engagement section of the tool, is tapered at a sharper angle than a peripheral wall of the screw.
  • FIG. 1 is a cross section of a driving tool
  • FIG. 2 is a cross section of that tool engaging the head of a screw
  • FIG. 3 is a plan view of the screw head showing the configuration of a slot.
  • a screw head 1 has a slot 2 .
  • the slot 2 is formed as a recess 3 in the screw head, and is shaped as a star with six points 4 .
  • the points 4 of the star are rounded, as shown in FIG. 3 , and the slot 2 is termed a hexalobular slot.
  • Hexalobular slots are described in ISO 10664, and are an internal driving feature. They may be known as ‘teeth recesses’ or ‘star recesses’.
  • a tool 6 see FIGS. 1 and 2 ) will engage surfaces 7 or 8 on one side or the other of each point 4 .
  • FIG. 2 shows a cross section through the screw head 1 .
  • the recess 3 extends down into the screw head 1 .
  • Walls 9 of the recess 3 are approximately straight.
  • the cross section of the recess 3 retains the shape of a star with six points throughout the straight walled part as it extends down into the screw head.
  • the depth of the recess 3 is limited by the minimum allowable wall thickness 10 near the bottom of the recess 3 .
  • the slot 2 has a further recess 11 at the bottom of the six pointed recess 3 .
  • the recess 11 is aligned with the axis of the screw, and so is centrally located therein.
  • This central recess 11 has a circular cross section and a smaller diameter than the recess 3 .
  • Walls 12 of the recess 11 are slightly inclined, so that the bottom 13 of the recess 11 has a diameter slightly smaller than that of the upper part 14 of the recess 11 .
  • a downwardly straight or sloping transition surface 15 is formed between the upper part 14 of the central recess 11 and the walls 9 of the six-pointed recess 3 .
  • the tool 6 has an engagement section 16 that is designed to fit within the recess 3 .
  • the shape of the engagement section 16 in plan compliments the shape of the recess 3 .
  • the diameter of the engagement section 16 may be uniform or slightly tapered inwardly towards its lower end. The taper may typically be 1.5 degrees.
  • the diameter of the engagement section 16 is sized to allow it to be inserted into the recess 3 without difficulties.
  • the tool 6 also has a central point 17 with a circular cross section.
  • the diameter of the central point 17 is slightly smaller than that of the recess 11 .
  • a surface 18 on the tool 6 extends outwardly and upwardly from the central point 17 to the engagement section 16 .
  • the angle of inclination of the surface 18 is smaller than that of the transition surface 15 .
  • a space 19 is formed between the surfaces 15 and 18 when a tool 6 is inserted into the slot 2 .
  • the depth of the space 19 diverges towards the central point 17 .
  • the section 16 of the tool 6 may engage the upper periphery of the walls 9 of the recess 3 when the tool enters the slot 2 .
  • the diverging space 19 allows any excess coating to collect in the space 19 without obstructing the engagement between the tool and the slot. If no space had been provided, coating residue might settle on the surface 15 and at the bottom 13 of the recess 11 , and thereby prevent sufficient engagement between the tool 6 and the slot 2 .
  • This mode of engagement is particularly effective in reducing angular movement between the tool 6 and the screw head 1 .
  • Retention of the screw on the tool by press engagement is particularly useful on one handed power tools and for robotic tools.
  • the central point 17 may have a length shorter than the height of the recess 3 , to enable the engagement section 16 of the tool 6 to enter the recess 3 .

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Pens And Brushes (AREA)
  • Toys (AREA)
  • Connection Of Plates (AREA)
  • Golf Clubs (AREA)
  • Surgical Instruments (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
US11/471,551 2006-04-24 2006-06-21 Screw head and tool for use therewith Abandoned US20070245863A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US11/979,731 US7730812B2 (en) 2006-04-24 2007-11-07 Screw head and tool for use therewith
US12/762,759 US8739660B2 (en) 2006-04-24 2010-04-19 Screw head and tool for use therewith

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0608062.6 2006-04-24
GB0608062A GB2437537A (en) 2006-04-24 2006-04-24 Screw head with hexalobular recess and corresponding tool

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US11/979,731 Continuation US7730812B2 (en) 2006-04-24 2007-11-07 Screw head and tool for use therewith

Publications (1)

Publication Number Publication Date
US20070245863A1 true US20070245863A1 (en) 2007-10-25

Family

ID=36581141

Family Applications (2)

Application Number Title Priority Date Filing Date
US11/471,551 Abandoned US20070245863A1 (en) 2006-04-24 2006-06-21 Screw head and tool for use therewith
US11/979,731 Active US7730812B2 (en) 2006-04-24 2007-11-07 Screw head and tool for use therewith

Family Applications After (1)

Application Number Title Priority Date Filing Date
US11/979,731 Active US7730812B2 (en) 2006-04-24 2007-11-07 Screw head and tool for use therewith

Country Status (14)

Country Link
US (2) US20070245863A1 (ja)
EP (1) EP2013491B1 (ja)
JP (1) JP5133979B2 (ja)
KR (1) KR101141482B1 (ja)
CN (1) CN101484710A (ja)
AT (1) ATE531951T1 (ja)
AU (1) AU2006342539B2 (ja)
CA (1) CA2650312C (ja)
DK (1) DK2013491T3 (ja)
ES (1) ES2376722T3 (ja)
GB (1) GB2437537A (ja)
PL (1) PL2013491T3 (ja)
TW (1) TWI321506B (ja)
WO (1) WO2007123409A1 (ja)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110217143A1 (en) * 2010-03-02 2011-09-08 Hughes Barry J Fastener system with stable engagement and stick fit
WO2011113791A1 (de) 2010-03-18 2011-09-22 Adolf Würth GmbH & Co. KG Antriebsausbildung für einen drehantrieb
WO2014166870A1 (de) * 2013-04-08 2014-10-16 Ludwig Hettich & Co. Kg Werkzeug, schraube und system zur übertragung eines antriebsmoments
USD769690S1 (en) * 2013-05-10 2016-10-25 Bryce Fastener Company, Inc. Combination fastener and mating driving tool
US9682464B2 (en) 2010-07-07 2017-06-20 Infastech Intellectual Properties Pte Ltd Torque transmission driver
US20190003510A1 (en) * 2017-06-30 2019-01-03 Carl Chasse Fastener having a compound recess
US20190365422A1 (en) * 2014-04-15 2019-12-05 Biedermann Technologies Gmbh & Co. Kg Screw element for use in spinal, orthopedic or trauma surgery and a system of such a screw element and a screw driver adapted thereto
USD889951S1 (en) * 2018-11-19 2020-07-14 Katsuyuki Totsu Screw
US10968939B2 (en) 2011-08-25 2021-04-06 Infastech Intellectual Properties Pte. Ltd. Tapered lobular driver and fastener
US20210246928A1 (en) * 2020-02-11 2021-08-12 Carl Chasse Fastener having improved wobble control, fastening system including the same, and method of forming the same
US11215215B2 (en) 2011-08-25 2022-01-04 Infastech Intellectual Properties Pte. Ltd. Tapered lobular driver and fastener
US11821453B2 (en) 2019-04-18 2023-11-21 Sheh Fung Screws Co., Ltd. Fastener having improved wobble control, fastening system including the same, and method of forming the same
US11963933B2 (en) 2017-05-11 2024-04-23 Scalpal Llc Torque enhancer device for grasping and tooling, and assemblies and uses thereof
US11969864B2 (en) 2017-05-11 2024-04-30 Scalpal Llc Multi-tier torque enhancer driver and/or receiver and method of using same
USD1026636S1 (en) * 2022-10-20 2024-05-14 National Nail Corp. Fastener head

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8739660B2 (en) 2006-04-24 2014-06-03 Ttapdrive As Screw head and tool for use therewith
JP5095594B2 (ja) * 2008-12-02 2012-12-12 株式会社ジーシー ねじ部材
DE102009044357A1 (de) 2009-10-29 2011-05-05 Fischerwerke Gmbh & Co. Kg Kombination aus Schraubendreher und Schraube sowie Schraube
NO20100558A1 (no) * 2010-04-19 2011-10-20 Ttapdrive As Skruehode og verktoy for bruk sammen med det
GB2493031B (en) * 2011-07-22 2015-05-13 Ttapdrive As Screw head and tool for use therewith
US9422965B2 (en) * 2013-05-10 2016-08-23 Bryce Fastener, Inc. Methods and apparatus for asymmetrical fastening system
DE102013113401A1 (de) * 2013-12-03 2015-06-03 Adolf Würth GmbH & Co. KG Schraube und Antriebselement mit Fase
WO2016100110A1 (en) * 2014-12-17 2016-06-23 Research Engineering & Manufacturing Inc. Recessed head fastener and driver combination
JP6742587B2 (ja) * 2015-12-24 2020-08-19 勝行 戸津 ねじ保持形ドライバービットおよびねじとの組合せ
DE102016112154A1 (de) * 2016-07-04 2018-01-04 Karl Leibinger Medizintechnik Gmbh & Co. Kg Implantationshilfsmittel für die Nutzung von oberflächensensitiven Implantaten
USD888544S1 (en) 2019-01-28 2020-06-30 National Nail Corp. Fastener head
USD883765S1 (en) 2019-01-28 2020-05-12 National Nail Corp. Tool bit
US11020154B2 (en) * 2019-04-26 2021-06-01 Warsaw Orthopedic, Inc. Surgical instrument and methods of use
USD1026605S1 (en) 2022-10-20 2024-05-14 National Nail Corp. Tool bit

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US6679141B1 (en) * 1995-02-14 2004-01-20 Facom Releasable coupling and tool therefor
US6792838B2 (en) * 2002-05-10 2004-09-21 Uni-Screw Worldwide, Inc. Integrated fastening system
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US975285A (en) * 1907-10-24 1910-11-08 Peter Lymburner Robertson Screw.
US1797390A (en) * 1929-02-04 1931-03-24 Frederick H Wood Screw driver designed to be keyed on a screw
US2083092A (en) * 1936-01-20 1937-06-08 Joseph R Richer Screw
US2216382A (en) * 1939-11-01 1940-10-01 W H Holmes Screw
US2397216A (en) * 1944-06-16 1946-03-26 Domnic V Stellin Socket head screw
US2800829A (en) * 1954-08-30 1957-07-30 Wesloc Screw Inc Cruciform recessed screw
US2800936A (en) * 1954-08-30 1957-07-30 Wesloc Screw Inc Cruciform screw driver
US3273442A (en) * 1961-03-31 1966-09-20 Launay Pierre Screws
US3207196A (en) * 1963-06-24 1965-09-21 Gardner Denver Co Countersinking tool
US3463209A (en) * 1965-05-17 1969-08-26 Romain Podolsky Screw fasteners
US3888144A (en) * 1974-02-08 1975-06-10 Joseph D Parsons Screw and driver
US4325153A (en) * 1979-10-22 1982-04-20 Charles Finnegan Combined screwdriver and boring apparatus
US4503737A (en) * 1983-04-11 1985-03-12 Digiovanni Donald Threaded fastener removing tool
US5137407A (en) * 1989-11-22 1992-08-11 Osg Corporation Head drive for threaded fastener
US5171117A (en) * 1991-10-16 1992-12-15 Textron Inc. Fastener with multilobular internal recess and tool entry ramps
US6679141B1 (en) * 1995-02-14 2004-01-20 Facom Releasable coupling and tool therefor
US6419489B1 (en) * 1996-09-24 2002-07-16 Nobel Biocare Ab Arrangement for use in a system with a range of dental screws, and the range of dental screws
US6016727A (en) * 1997-02-28 2000-01-25 Sofamor Danek Properties, Inc. Recess drive bone screw and cooperable driving tool
US6253649B1 (en) * 1998-12-18 2001-07-03 Yugenkaisha Shinjo Seisakusho Screw with a recessed head and a driver bit engageable therewith
US6951158B1 (en) * 1999-10-08 2005-10-04 Jone Edland System comprising a screw and a tool therefor
US20020129680A1 (en) * 2000-03-06 2002-09-19 Felo-Werkzeugfarik Holland-Letz Gmbh Screwdriver bits
US6948408B1 (en) * 2001-08-17 2005-09-27 Howard Lee Flat ended double cube shaped tipped, screwdriver system
US6792838B2 (en) * 2002-05-10 2004-09-21 Uni-Screw Worldwide, Inc. Integrated fastening system
US20050172762A1 (en) * 2003-09-12 2005-08-11 Yasuo Suzuki Screw and screwdriver

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110217143A1 (en) * 2010-03-02 2011-09-08 Hughes Barry J Fastener system with stable engagement and stick fit
US8291795B2 (en) * 2010-03-02 2012-10-23 Phillips Screw Company Fastener system with stable engagement and stick fit
US8616097B2 (en) 2010-03-02 2013-12-31 Phillips Screw Company Fastener systems and methods of forming fastener systems with stable engagement and stick fit
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CA2650312C (en) 2014-09-30
EP2013491B1 (en) 2011-11-02
ATE531951T1 (de) 2011-11-15
GB2437537A (en) 2007-10-31
KR101141482B1 (ko) 2012-05-04
EP2013491A1 (en) 2009-01-14
TW200740565A (en) 2007-11-01
JP5133979B2 (ja) 2013-01-30
CA2650312A1 (en) 2007-11-01
AU2006342539B2 (en) 2012-09-20
ES2376722T3 (es) 2012-03-16
PL2013491T3 (pl) 2012-04-30
AU2006342539A1 (en) 2007-11-01
US7730812B2 (en) 2010-06-08
DK2013491T3 (da) 2012-02-27
JP2009534618A (ja) 2009-09-24
CN101484710A (zh) 2009-07-15
US20080159827A1 (en) 2008-07-03
GB0608062D0 (en) 2006-05-31
KR20090005394A (ko) 2009-01-13
TWI321506B (en) 2010-03-11
WO2007123409A1 (en) 2007-11-01

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