GB2232218B - A security fastener - Google Patents

A security fastener

Info

Publication number
GB2232218B
GB2232218B GB8912714A GB8912714A GB2232218B GB 2232218 B GB2232218 B GB 2232218B GB 8912714 A GB8912714 A GB 8912714A GB 8912714 A GB8912714 A GB 8912714A GB 2232218 B GB2232218 B GB 2232218B
Authority
GB
United Kingdom
Prior art keywords
security fastener
fastener
security
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.)
Expired - Lifetime
Application number
GB8912714A
Other versions
GB2232218A (en
GB8912714D0 (en
Inventor
Frederick John Yarrow
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
Priority to GB8912714A priority Critical patent/GB2232218B/en
Publication of GB8912714D0 publication Critical patent/GB8912714D0/en
Publication of GB2232218A publication Critical patent/GB2232218A/en
Application granted granted Critical
Publication of GB2232218B publication Critical patent/GB2232218B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • 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
    • B25B13/486—Spanners; Wrenches for special purposes for theft-proof screws, bolts or nuts using a threaded connection between screw and 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
    • F16B23/0084—Specially shaped nuts or heads of bolts or screws for rotations by a tool with a threaded engagement between the head of the bolt or screw and the 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
    • 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)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
GB8912714A 1989-06-02 1989-06-02 A security fastener Expired - Lifetime GB2232218B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8912714A GB2232218B (en) 1989-06-02 1989-06-02 A security fastener

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8912714A GB2232218B (en) 1989-06-02 1989-06-02 A security fastener

Publications (3)

Publication Number Publication Date
GB8912714D0 GB8912714D0 (en) 1989-07-19
GB2232218A GB2232218A (en) 1990-12-05
GB2232218B true GB2232218B (en) 1992-11-04

Family

ID=10657779

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8912714A Expired - Lifetime GB2232218B (en) 1989-06-02 1989-06-02 A security fastener

Country Status (1)

Country Link
GB (1) GB2232218B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110026889A (en) * 2019-04-28 2019-07-19 上海新昇半导体科技有限公司 Fixed connecting part, grinding head assembly and polissoir

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5120168A (en) * 1990-12-06 1992-06-09 Padula William V Auto-torque, tamper-proof screw/bolt
IL105183A (en) * 1993-03-28 1996-07-23 Yehiel Gotfried Surgical device for connection of fractured bones
US6361258B1 (en) * 2000-07-06 2002-03-26 Gary V. Heesch Permanently placeable fasteners, inserter head for fastener placement and related methods
US6914772B2 (en) * 2003-06-16 2005-07-05 Multimedia Telesys, Inc. Video conference system enclosure
CN101126409B (en) * 2007-04-12 2010-05-26 陈伟明 Theft-proof screw bolt and the dedicated tool
CN102032254A (en) * 2010-12-05 2011-04-27 徐尚仁 Thermal treatment quenching enhanced hard arc antitheft screw with outer peripheral wall top
CN102052380A (en) * 2010-12-09 2011-05-11 徐尚仁 Thermally-treated, quenched and hardened theft-proof nut with circular-arc outer circumferential wall
CN102182746A (en) * 2011-04-20 2011-09-14 徐尚仁 Anti-theft screw with butting bar on screw hole top in heat treatment stiffening screw top
CN104019105B (en) * 2014-06-13 2016-08-24 温州大学 A kind of bolt
GB2571246A (en) * 2018-02-26 2019-08-28 John Tooth David Smart-Thread
CN111911514A (en) * 2020-07-16 2020-11-10 浙江亦宸五金有限公司 Anti-theft lead sealing screw for electric energy meter
CN111927866B (en) * 2020-07-16 2022-08-23 亦宸五金(浙江)股份有限公司 Waterproof special combination screw

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110026889A (en) * 2019-04-28 2019-07-19 上海新昇半导体科技有限公司 Fixed connecting part, grinding head assembly and polissoir

Also Published As

Publication number Publication date
GB2232218A (en) 1990-12-05
GB8912714D0 (en) 1989-07-19

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Expiry date: 20090601