GB1452893A - Security nut and bolt - Google Patents

Security nut and bolt

Info

Publication number
GB1452893A
GB1452893A GB5079772A GB5079772A GB1452893A GB 1452893 A GB1452893 A GB 1452893A GB 5079772 A GB5079772 A GB 5079772A GB 5079772 A GB5079772 A GB 5079772A GB 1452893 A GB1452893 A GB 1452893A
Authority
GB
United Kingdom
Prior art keywords
tool
bolt
recess
projection
screw
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
Application number
GB5079772A
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.)
Ellis A E H
Original Assignee
Ellis A E H
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 Ellis A E H filed Critical Ellis A E H
Priority to GB5079772A priority Critical patent/GB1452893A/en
Publication of GB1452893A publication Critical patent/GB1452893A/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
    • 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
    • F16B23/0007—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool
    • F16B23/0046—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool having one eccentric circular or polygonal recess or protrusion

Landscapes

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

Abstract

1452893 Fastener driving tools A E H ELLIS 31 Oct 1973 [3 Nov 1972] 50797/72 Heading B3N [Also in Division F2] A driving tool for a security nut, bolt, or screw having a head 10 with a side surface which is a figure of revolution interrupted by a single V recess 14, has a surface of revolution 18 interrupted by a single projection 22 or 32 engageable with the recess 14 of the nut, bolt or screw. In Fig. 3, the tool is a sleeve with a cylindrical bore 18 and a hexagonal outer surface 24, a recess 20 in the bore receiving a key 22 forming the projection. The key may be integral with the tool. In Figs. 7, 8 the projection 32 is on the end face of the tool, and a central boss 30 is engageable with a blind bore (28) (Figs. 5, 6, not shown) in the centre of a screw head. (For Figures see next column.)
GB5079772A 1972-11-03 1972-11-03 Security nut and bolt Expired GB1452893A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5079772A GB1452893A (en) 1972-11-03 1972-11-03 Security nut and bolt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5079772A GB1452893A (en) 1972-11-03 1972-11-03 Security nut and bolt

Publications (1)

Publication Number Publication Date
GB1452893A true GB1452893A (en) 1976-10-20

Family

ID=10457397

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5079772A Expired GB1452893A (en) 1972-11-03 1972-11-03 Security nut and bolt

Country Status (1)

Country Link
GB (1) GB1452893A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0016738A1 (en) * 1979-02-19 1980-10-01 Industri AB Thule Fastening or clamping device
GB2158910A (en) * 1984-04-10 1985-11-20 Clerkenwell Screws Limited Fixing elements and driving tools
GB2250559A (en) * 1990-10-03 1992-06-10 Illinois Tool Works Recess for aligning tool on non-circular fastener head

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0016738A1 (en) * 1979-02-19 1980-10-01 Industri AB Thule Fastening or clamping device
GB2158910A (en) * 1984-04-10 1985-11-20 Clerkenwell Screws Limited Fixing elements and driving tools
GB2250559A (en) * 1990-10-03 1992-06-10 Illinois Tool Works Recess for aligning tool on non-circular fastener head
GB2250559B (en) * 1990-10-03 1995-03-08 Illinois Tool Works Fastener-driving tool

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Effective date: 19931030