GB201113680D0 - Tool heads - Google Patents

Tool heads

Info

Publication number
GB201113680D0
GB201113680D0 GB201113680A GB201113680A GB201113680D0 GB 201113680 D0 GB201113680 D0 GB 201113680D0 GB 201113680 A GB201113680 A GB 201113680A GB 201113680 A GB201113680 A GB 201113680A GB 201113680 D0 GB201113680 D0 GB 201113680D0
Authority
GB
United Kingdom
Prior art keywords
screw
work
piece
head
drive formation
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.)
Granted
Application number
GB201113680A
Other versions
GB2493528A (en
GB2493528B (en
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.)
JONES JULIA R
Original Assignee
JONES JULIA R
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 JONES JULIA R filed Critical JONES JULIA R
Priority to GB1113680.1A priority Critical patent/GB2493528B/en
Publication of GB201113680D0 publication Critical patent/GB201113680D0/en
Publication of GB2493528A publication Critical patent/GB2493528A/en
Application granted granted Critical
Publication of GB2493528B publication Critical patent/GB2493528B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
    • B25B27/18—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same withdrawing broken threaded parts or twist drills

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)

Abstract

The tool head 4 includes a drive formation 6 cooperable with a matching drive formation on a head of a screw for driving the screw into and removing the screw from a work-piece. The drive formation may be provided by four radial webs 6 having a first section 12 with an angled outer face 12a that provides a cutting edge 12b on the trailing side in the direction of rotation of the tool bit to drive the screw into the work-piece and which is on the leading side in the direction of rotation of the tool bit to remove the screw from the work-piece. The cutting edge 12b enhances the engagement with the screw head when removing the screw from the work-piece even if the drive formation on the screw head is damaged.
GB1113680.1A 2011-08-09 2011-08-09 Tool heads Expired - Fee Related GB2493528B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1113680.1A GB2493528B (en) 2011-08-09 2011-08-09 Tool heads

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1113680.1A GB2493528B (en) 2011-08-09 2011-08-09 Tool heads

Publications (3)

Publication Number Publication Date
GB201113680D0 true GB201113680D0 (en) 2011-09-21
GB2493528A GB2493528A (en) 2013-02-13
GB2493528B GB2493528B (en) 2016-12-07

Family

ID=44735628

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1113680.1A Expired - Fee Related GB2493528B (en) 2011-08-09 2011-08-09 Tool heads

Country Status (1)

Country Link
GB (1) GB2493528B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103406876A (en) * 2013-08-27 2013-11-27 丹阳市飞鹰工具有限公司 Screw extractor

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4084478A (en) * 1974-09-12 1978-04-18 Phillips Screw Company Screw heads
US4092753A (en) * 1976-04-05 1978-06-06 Fuhrmann Manfred E Combination drill and screwdriver
BR9814505A (en) * 1998-03-06 2000-12-19 Fcd Holdings Pty Ltd Countersink screw and tool
DE29805135U1 (en) * 1998-03-23 1998-07-02 Brüggen, Rainer, 49509 Recke Tool attachment for a machine, in particular a drilling machine
US6176161B1 (en) * 1999-10-28 2001-01-23 Jung-Sheng Huang Damaged screw removing screwdriver
AUPQ432899A0 (en) * 1999-11-29 1999-12-23 Fcd (Holdings) Pty Limited Rotatable drilling bit
US20040007095A1 (en) * 2002-07-12 2004-01-15 Meng Chi Fen Phillips head screw driver bit having cutter leading edge
WO2004065067A1 (en) * 2003-01-24 2004-08-05 Katsuyuki Totsu Screw driver bit and combination thereof with screw
US8215206B2 (en) * 2003-04-25 2012-07-10 Combined Products Co. #1 Inc. Damaged bolt and screw removing devices
GB2418879A (en) * 2004-10-07 2006-04-12 Julia Jones Improvements in or relating to combination tool heads
JPWO2007020681A1 (en) * 2005-08-12 2009-02-19 株式会社エンジニア Driver bit

Also Published As

Publication number Publication date
GB2493528A (en) 2013-02-13
GB2493528B (en) 2016-12-07

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20230809