GB8529096D0 - Tamper-proof bolt/screw - Google Patents

Tamper-proof bolt/screw

Info

Publication number
GB8529096D0
GB8529096D0 GB858529096A GB8529096A GB8529096D0 GB 8529096 D0 GB8529096 D0 GB 8529096D0 GB 858529096 A GB858529096 A GB 858529096A GB 8529096 A GB8529096 A GB 8529096A GB 8529096 D0 GB8529096 D0 GB 8529096D0
Authority
GB
United Kingdom
Prior art keywords
tamper
screw
proof bolt
proof
bolt
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
GB858529096A
Other versions
GB2168121A (en
GB2168121B (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.)
DUTTON P
Original Assignee
DUTTON P
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
Priority claimed from GB848430563A external-priority patent/GB8430563D0/en
Application filed by DUTTON P filed Critical DUTTON P
Priority to GB08529096A priority Critical patent/GB2168121B/en
Publication of GB8529096D0 publication Critical patent/GB8529096D0/en
Publication of GB2168121A publication Critical patent/GB2168121A/en
Application granted granted Critical
Publication of GB2168121B publication Critical patent/GB2168121B/en
Expired legal-status Critical Current

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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Portable Nailing Machines And Staplers (AREA)
GB08529096A 1984-12-04 1985-11-26 Tamper-proof bolt or screw Expired GB2168121B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08529096A GB2168121B (en) 1984-12-04 1985-11-26 Tamper-proof bolt or screw

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB848430563A GB8430563D0 (en) 1984-12-04 1984-12-04 Tamper-proof bolt
GB08529096A GB2168121B (en) 1984-12-04 1985-11-26 Tamper-proof bolt or screw

Publications (3)

Publication Number Publication Date
GB8529096D0 true GB8529096D0 (en) 1986-01-02
GB2168121A GB2168121A (en) 1986-06-11
GB2168121B GB2168121B (en) 1987-10-14

Family

ID=26288533

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08529096A Expired GB2168121B (en) 1984-12-04 1985-11-26 Tamper-proof bolt or screw

Country Status (1)

Country Link
GB (1) GB2168121B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2308930B1 (en) * 2007-05-24 2009-10-27 Tsf Navarra De Tecnicas De Soldadura Y Fijacion, S.L. SCREW AND SAFETY NUT, WITH SPECIFIC WRENCHES FOR TIGHTENING AND LOOSENING.
EP2908014B1 (en) * 2014-02-13 2019-06-12 HALFEN GmbH Screw

Also Published As

Publication number Publication date
GB2168121A (en) 1986-06-11
GB2168121B (en) 1987-10-14

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Legal Events

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