WO2008049153B1 - A self drilling anti-removal screw and tool - Google Patents

A self drilling anti-removal screw and tool

Info

Publication number
WO2008049153B1
WO2008049153B1 PCT/AU2007/001605 AU2007001605W WO2008049153B1 WO 2008049153 B1 WO2008049153 B1 WO 2008049153B1 AU 2007001605 W AU2007001605 W AU 2007001605W WO 2008049153 B1 WO2008049153 B1 WO 2008049153B1
Authority
WO
WIPO (PCT)
Prior art keywords
fastener
tool
head portion
shoulder
attaching
Prior art date
Application number
PCT/AU2007/001605
Other languages
French (fr)
Other versions
WO2008049153A1 (en
Inventor
Paul Anthony Bugeja
Original Assignee
Paul Anthony Bugeja
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 Paul Anthony Bugeja filed Critical Paul Anthony Bugeja
Publication of WO2008049153A1 publication Critical patent/WO2008049153A1/en
Publication of WO2008049153B1 publication Critical patent/WO2008049153B1/en

Links

Classifications

    • 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
    • F16B23/0076—Specially shaped nuts or heads of bolts or screws for rotations by a tool causing slipping of the tool in loosening rotation, i.e. disabling unscrewing unless another tool is used
    • 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
    • B25B13/00—Spanners; Wrenches
    • B25B13/48—Spanners; Wrenches for special purposes
    • B25B13/485—Spanners; Wrenches for special purposes for theft-proof screws, bolts or nuts
    • 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
    • F16B41/00—Measures against loss of bolts, nuts, or pins; Measures against unauthorised operation of bolts, nuts or pins
    • F16B41/005—Measures against unauthorised operation of bolts, nuts or pins

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling Tools (AREA)
  • Dowels (AREA)
  • Connection Of Plates (AREA)

Abstract

A fastener which can be rotated in one direction using an attaching tool but not in the other direction, the fastener comprising a shank portion, a collar portion, and a head portion, the collar portion being positioned immediately below the head portion and providing support for part of the head portion, the head portion having a central raised portion and a pair of opposed shoulder portions, each shoulder portion extending from the central raised portion and towards a peripheral edge of the collar portion, each shoulder portion having an attaching tool engaging face on one side of the shoulder portion and an attaching tool sliding face on the other side of the shoulder portion the construction and arrangement of this being to enable the attaching tool to engage with the engaging face on each shoulder portion to enable the fastener to be tightened, unable to engage with the head portion and/or shoulder portions when rotated in the other direction thereby preventing the fastener from being loosened.

Claims

AMENDED CLAIMS received by the International Bureau on 24 April 2008 (24.04.08).
1. A method for attaching and removing a one-way fastener from a member into which the fastener is passed, the method comprising providing a fastener having a shank portion which is threaded, the shank portion further comprising engagement means to allow a removing tool to be connected to the fastener, the fastener further comprising a head portion, the head portion having a configuration that enables an attaching tool to rotate the head portion in one direction but prevents or restricts the tool from rotating the head in the other direction, drilling the fastener through the member (for instance sheet steel) by attaching the attaching tool to the head portion of the fastener and rotating the tool to rotate the head portion thereby drilling the fastener through the member, a portion of the shank of the fastener extending through the member, the removing tool able to attach to part of the shank of the fastener and able to rotate the fastener in the opposite direction thereby unscrewing the fastener from the member.
2. The method of claim 1, wherein the fastener is a self drilling fastener and the engagement means comprises a cutting tip on the self drilling fastener.
3. The method of claim 2, wherein the removing tool contains an opening to accommodate the cutting tip, the opening being configured such that rotation of the tool causes rotation of the screw.
4. The method as claimed in any one of the preceding claims, wherein the fastener is a screw.
5. The method as claimed in any one of the preceding claims, wherein the fastener comprises a shank portion containing threads and a cutting tip, a collar portion and a head portion the collar portion being immediately below the head portion and supporting part of the head portion, the head portion having a configuration to enable the attaching tool to rotate the fastener in one direction but not the other direction.
6. The method as claimed in claim 5, wherein the head portion has a central raised portion and a pair of opposed shoulder portions, each shoulder portion extending 15
from the central raised portion and towards a peripheral edge of the collar portion, each shoulder portion having and attaching tool engaging face on one side of the shoulder portion and an attaching tool sliding face on the other side of the shoulder portion the construction and arrangement of this being to enable the attaching tool to engage with the engaging face on each shoulder portion to enable the fastener to be tightened, but unable to engage with the head portion and/or shoulder portions when rotated in the other direction thereby preventing the fastener from being loosened.
7. A fastener which can be rotated in one direction using an attaching tool but not in the other direction, the fastener comprising a shank portion containing threads and a cutting tip, a collar portion and a head portion the collar portion being immediately below the head portion and supporting parts of the head portion, the head portion having a configuration to enable the tool to rotate the fastener in one direction but not the other direction, the cutting tip including at least one shoulder shaped to engage a tool to rotate the fastener in the other direction for removal.
8. A fastening system including a fastener which can be rotated in one direction using an attaching tool but not in the other direction, the fastener comprising a shank portion containing threads and a cutting tip, a collar portion and a head portion the collar portion being immediately below the head portion and supporting parts of the head portion, the head portion having a configuration to enable the tool to rotate the fastener in one direction but not the other direction, the cutting tip including at least one shoulder shaped to engage a tool to rotate the fastener in the other direction for removal and a removal tool having head portion and a portion to allow rotation of the head portion, the head portion of the removal tool having an opening shaped to correspond and engage with the cutting tip of the fastener to rotate the fastener in the other direction fro removal of the fastener.
9. A fastener as claimed in claim 7,the head portion having a central raised portion and a pair of opposed shoulder portions, each shoulder portion extending from the central raised portion and towards a peripheral edge of the collar portion, each shoulder portion having an attaching tool engaging face on one side of the shoulder portion and an attaching tool sliding face on the other side of the 16
shoulder portion the construction and arrangement of this being to enable the attaching tool to engage with the engaging face on each shoulder portion to enable the fastener to be tightened, unable to engage with the head portion and/or shoulder portions when rotated in the other direction thereby preventing the fastener from being loosened.
10. The fastener or system as claimed in any one of claims 7 to 9, wherein the shank portion has a length of between 10-200 mm and a thickness of between 2-10 mm.
11. The fastener or system as claimed in any one of claims 7 to 10, comprising a self drilling screw fastener.
12. The fastener or system as claimed in any one of claims 7 to 11, wherein the collar portion is disk-like and has a diameter of between 5-30 mm, and a thickness of between 0.5-3 mm.
13. The fastener or system as claimed in any one of claims 8 to 12, wherein the tool engaging face is substantially at 90° from the plane of the collar portion.
14. A fastener substantially as hereinbefore described with reference to figures 1-5.
15. An attaching tool substantially as hereinbefore described with reference to figures 6-7.
16. A removing tool substantially as hereinbefore described with reference to figure 8.
17. The method as claimed in any one of claims 1-6 and substantially as described.
PCT/AU2007/001605 2006-10-23 2007-10-22 A self drilling anti-removal screw and tool WO2008049153A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2006230763A AU2006230763B2 (en) 2006-10-23 2006-10-23 A Self Drilling Anti-Removal Screw and Tool
AU2006230763 2006-10-23

Publications (2)

Publication Number Publication Date
WO2008049153A1 WO2008049153A1 (en) 2008-05-02
WO2008049153B1 true WO2008049153B1 (en) 2008-06-26

Family

ID=39324015

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2007/001605 WO2008049153A1 (en) 2006-10-23 2007-10-22 A self drilling anti-removal screw and tool

Country Status (2)

Country Link
AU (1) AU2006230763B2 (en)
WO (1) WO2008049153A1 (en)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1312409A (en) * 1919-08-05 One-way screw or bolt
US1656963A (en) * 1922-11-16 1928-01-24 American Arch Co Furnace
US1956963A (en) * 1931-05-09 1934-05-01 Jr Fred Salmen One way screw
US3339952A (en) * 1965-04-08 1967-09-05 Nat Lock Co Construction bolt or fastener
US3313198A (en) * 1965-05-25 1967-04-11 Walton Marvin One-way screw for operation with high speed power tools
US3673912A (en) * 1971-02-25 1972-07-04 George E Herr Removable tamperproof fastening means
US4171662A (en) * 1976-12-20 1979-10-23 Wright Line Inc. Security screw
US4125051A (en) * 1977-06-09 1978-11-14 Illinois Tool Works Inc. Tamperproof fastener
US6189416B1 (en) * 1992-09-14 2001-02-20 Raymond D. Groom Stud bolt tool and method of using same
AU2004202171A1 (en) * 2003-05-23 2004-12-09 Mechanical Plating Pty Ltd A security screw
AU2007100942A4 (en) * 2007-09-28 2007-11-01 Rudy Alexander Diener One way security screw

Also Published As

Publication number Publication date
WO2008049153A1 (en) 2008-05-02
AU2006230763A1 (en) 2008-05-08
AU2006230763B2 (en) 2010-02-18

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