WO2000034668A3 - Fixing device and method - Google Patents

Fixing device and method Download PDF

Info

Publication number
WO2000034668A3
WO2000034668A3 PCT/GB1999/004127 GB9904127W WO0034668A3 WO 2000034668 A3 WO2000034668 A3 WO 2000034668A3 GB 9904127 W GB9904127 W GB 9904127W WO 0034668 A3 WO0034668 A3 WO 0034668A3
Authority
WO
WIPO (PCT)
Prior art keywords
bore
helical
head
shank
fixing device
Prior art date
Application number
PCT/GB1999/004127
Other languages
French (fr)
Other versions
WO2000034668A2 (en
Inventor
Charles Bickford
Original Assignee
P A Fixings Ltd
Charles Bickford
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 P A Fixings Ltd, Charles Bickford filed Critical P A Fixings Ltd
Priority to AU16681/00A priority Critical patent/AU1668100A/en
Publication of WO2000034668A2 publication Critical patent/WO2000034668A2/en
Publication of WO2000034668A3 publication Critical patent/WO2000034668A3/en
Priority to GBGB0125655.1A priority patent/GB0125655D0/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
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/001—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed
    • F16B25/0026—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed the material being a hard non-organic material, e.g. stone, concrete or drywall
    • 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
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
    • F16B25/0042—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw
    • F16B25/0047—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw the ridge being characterised by its cross-section in the plane of the shaft axis
    • 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
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
    • F16B25/0042—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw
    • F16B25/0068—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw with multiple-threads, e.g. a double thread screws
    • 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
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
    • F16B39/30—Locking exclusively by special shape of the screw-thread

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

A fixing device comprises a bright zinc-plated steel shank (1) formed by cold forming with a head (2), the shank having formed thereon by thread-rolling a helical bore wall engagement configuration (6). This configuration comprises a pair of spaced apart helical ridges (7, 8) with a helical ridge (9) of larger elevation provided midway therebetween. The device readily self-taps when turned into a bore in a variety of materials. The device holds firmly in timer end grain and on continued turning of its head will perforate and embed in the timber, no amount of torquing causing the device to ream the bore when the device is penetrated into autoclaved aereated concrete.
PCT/GB1999/004127 1998-12-08 1999-12-08 Fixing device and method WO2000034668A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU16681/00A AU1668100A (en) 1998-12-08 1999-12-08 Improved fixing device and method
GBGB0125655.1A GB0125655D0 (en) 1998-12-08 2001-10-24 Improved Fixing Device and Method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9826978.0 1998-12-08
GB9826978A GB9826978D0 (en) 1998-12-08 1998-12-08 Improved fixing device & method

Publications (2)

Publication Number Publication Date
WO2000034668A2 WO2000034668A2 (en) 2000-06-15
WO2000034668A3 true WO2000034668A3 (en) 2001-01-18

Family

ID=10843843

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1999/004127 WO2000034668A2 (en) 1998-12-08 1999-12-08 Fixing device and method

Country Status (5)

Country Link
AU (1) AU1668100A (en)
GB (3) GB9826978D0 (en)
TW (1) TW547581U (en)
WO (1) WO2000034668A2 (en)
ZA (1) ZA200109220B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2545415Y (en) * 2002-04-11 2003-04-16 久可工业股份有限公司 Three-spiral thread two-end fixing screw with different heights of thread
DK1975421T3 (en) * 2007-03-28 2009-09-28 M Cut Systems Gmbh & Co Kg Self-tapping screw
GB2455533B (en) * 2007-12-12 2011-08-10 Excalibur Screwbolts Ltd A fixing device
DE202008011808U1 (en) 2008-09-05 2008-12-24 M-Cut Systems Gmbh & Co. Kg Thread forming screw
EP2354572B1 (en) 2010-01-18 2014-07-02 UIP GmbH & Co. KG Thread moulding screw
EP2728209B1 (en) 2012-11-05 2017-07-12 SG Holding UG Thread forming screw
GB201817127D0 (en) * 2018-10-21 2018-12-05 Excalibur Screwbolts Ltd Improvements in or relating to anchor bolts
GB201912551D0 (en) * 2019-09-01 2019-10-16 Product Licensing Company Ltd Method & means of forming threaded ties and rods

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE54903C (en) * THE AMERICAN screw COMPANY in Providence, Rhode Island, V. St. A Wood screw with a flat auxiliary thread between the sharp threads
GB2042120A (en) * 1979-02-10 1980-09-17 Gutshall C E Long-pitch crest thread
EP0225003A1 (en) * 1985-11-22 1987-06-10 Jsm Screw Co. Ltd. Screw with groove for self-lock
WO1992010688A1 (en) * 1990-12-14 1992-06-25 Charles Bickford Improved fixing

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5957646A (en) * 1998-11-02 1999-09-28 Anthony C. Giannuzzi Enhanced strength screw-type masonry anchor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE54903C (en) * THE AMERICAN screw COMPANY in Providence, Rhode Island, V. St. A Wood screw with a flat auxiliary thread between the sharp threads
GB2042120A (en) * 1979-02-10 1980-09-17 Gutshall C E Long-pitch crest thread
EP0225003A1 (en) * 1985-11-22 1987-06-10 Jsm Screw Co. Ltd. Screw with groove for self-lock
WO1992010688A1 (en) * 1990-12-14 1992-06-25 Charles Bickford Improved fixing

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"Die Welt der Anker & Dübel, Gesamtkatalog No. 9660", UPAT GMBH & CO., EMMENDINGEN (DE), XP002133855 *

Also Published As

Publication number Publication date
WO2000034668A2 (en) 2000-06-15
GB9826978D0 (en) 1999-02-03
TW547581U (en) 2003-08-11
GB0125655D0 (en) 2001-12-19
GB2344629A (en) 2000-06-14
GB9929130D0 (en) 2000-02-02
ZA200109220B (en) 2002-11-08
AU1668100A (en) 2000-06-26
GB2344629B (en) 2002-08-14

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