GB2036907A - Slotted Fasteners - Google Patents

Slotted Fasteners Download PDF

Info

Publication number
GB2036907A
GB2036907A GB7844112A GB7844112A GB2036907A GB 2036907 A GB2036907 A GB 2036907A GB 7844112 A GB7844112 A GB 7844112A GB 7844112 A GB7844112 A GB 7844112A GB 2036907 A GB2036907 A GB 2036907A
Authority
GB
United Kingdom
Prior art keywords
slot
slots
tightening
blade
inclined plane
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.)
Withdrawn
Application number
GB7844112A
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 GB7844112A priority Critical patent/GB2036907A/en
Publication of GB2036907A publication Critical patent/GB2036907A/en
Withdrawn legal-status Critical Current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

Abstract

A slotted fastener is provided with inclined surfaces to the slot, so that the fastener can be tightened but not loosened by a tool engaging the slot. <IMAGE>

Description

SPECIFICATION Unidirectional Slot or Slots for All Rotational Fixing Devices The Invention is for the manufacture of varieties of rotational fixing devices that have a unidirectional slot or slots, raised bump or lump/s, or indentation cut or formed on or in the tightening or slackening head or face etc. of the device. The form will be so that the direction of desired rotation will be faced with a vertical or at least resistant face whilst in the opposite direction.
There will be an inclined plane as illustrated in diagram No. 1.
The fixing device whilst being able to be inserted and tightened in the desired direction would not be able to be removed by attempts to rotate it in the opposite direction by means of inserting some form of "Tool" in the slot etc.
The slots may be straight or irregular to assist with tightening, especially with mechanical means, a small hole or indentation may be made in the centre of the head to assist with the location and retention of the tightening blade. A reversal of direction would of course eject the blade up the inclined plane.
No. 1
Direction of Force
Inclined plane o Half Slot (Section through Typical Head) Diagram No. 2
(Example of the type of blade that could be used with centre hole for ease of location of the slot and for mechanical tightening).
Diagram No. 3
Centre Hole to Assist W of Blade
Typical Bolt Head without Centre Hole
Claim The use of this type of uni directional rotational slot or slots on rotational fixing devices will prevent unourthorised persons from removing or slackening said fixing devices without specialised equipment. The provision of an inclined plane opposite a vertical plane or risen edge in any type of slot whether single slot, multi slot, straight curved, on face recessed into face, on edge, inside or outside the perimeter of the fixing device with or without a central hole or indentation will have the same desired effect.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (1)

  1. **WARNING** start of CLMS field may overlap end of DESC **.
    SPECIFICATION Unidirectional Slot or Slots for All Rotational Fixing Devices The Invention is for the manufacture of varieties of rotational fixing devices that have a unidirectional slot or slots, raised bump or lump/s, or indentation cut or formed on or in the tightening or slackening head or face etc. of the device. The form will be so that the direction of desired rotation will be faced with a vertical or at least resistant face whilst in the opposite direction.
    There will be an inclined plane as illustrated in diagram No. 1.
    The fixing device whilst being able to be inserted and tightened in the desired direction would not be able to be removed by attempts to rotate it in the opposite direction by means of inserting some form of "Tool" in the slot etc.
    The slots may be straight or irregular to assist with tightening, especially with mechanical means, a small hole or indentation may be made in the centre of the head to assist with the location and retention of the tightening blade. A reversal of direction would of course eject the blade up the inclined plane.
    No. 1
    Direction of Force
    Inclined plane o Half Slot (Section through Typical Head) Diagram No. 2
    (Example of the type of blade that could be used with centre hole for ease of location of the slot and for mechanical tightening).
    Diagram No. 3
    Centre Hole to Assist W of Blade
    Typical Bolt Head without Centre Hole
    Claim The use of this type of uni directional rotational slot or slots on rotational fixing devices will prevent unourthorised persons from removing or slackening said fixing devices without specialised equipment. The provision of an inclined plane opposite a vertical plane or risen edge in any type of slot whether single slot, multi slot, straight curved, on face recessed into face, on edge, inside or outside the perimeter of the fixing device with or without a central hole or indentation will have the same desired effect.
GB7844112A 1978-12-10 1978-12-10 Slotted Fasteners Withdrawn GB2036907A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7844112A GB2036907A (en) 1978-12-10 1978-12-10 Slotted Fasteners

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7844112A GB2036907A (en) 1978-12-10 1978-12-10 Slotted Fasteners

Publications (1)

Publication Number Publication Date
GB2036907A true GB2036907A (en) 1980-07-02

Family

ID=10500965

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7844112A Withdrawn GB2036907A (en) 1978-12-10 1978-12-10 Slotted Fasteners

Country Status (1)

Country Link
GB (1) GB2036907A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2149872A (en) * 1983-11-17 1985-06-19 Peter John Gill Tamper resistant fasteners
WO1988009708A1 (en) * 1987-06-01 1988-12-15 Sfs Stadler Ag Screw tool and screws usable therewith
GB2236569A (en) * 1989-10-03 1991-04-10 Norman Cropper A security screw
GB2260791A (en) * 1991-10-22 1993-04-28 Psm Int Plc Screw threaded inserts
US5647712A (en) * 1996-05-09 1997-07-15 Fleetguard, Inc. One directional socket-driven component
US20220316513A1 (en) * 2021-04-02 2022-10-06 William Norton Fastener

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2149872A (en) * 1983-11-17 1985-06-19 Peter John Gill Tamper resistant fasteners
WO1988009708A1 (en) * 1987-06-01 1988-12-15 Sfs Stadler Ag Screw tool and screws usable therewith
GB2236569A (en) * 1989-10-03 1991-04-10 Norman Cropper A security screw
GB2236569B (en) * 1989-10-03 1993-11-17 Norman Cropper A security screw
GB2260791A (en) * 1991-10-22 1993-04-28 Psm Int Plc Screw threaded inserts
GB2260791B (en) * 1991-10-22 1994-10-19 Psm Int Plc Improvements relating to screw threaded fasteners
US5647712A (en) * 1996-05-09 1997-07-15 Fleetguard, Inc. One directional socket-driven component
US20220316513A1 (en) * 2021-04-02 2022-10-06 William Norton Fastener

Similar Documents

Publication Publication Date Title
US4039266A (en) Combination stop collar and cutting tool
US5353667A (en) Combination tool and fastener
US5467497A (en) Adjustable drywall corner tool
US4625598A (en) Positive engagement screw driver tool
GB2036907A (en) Slotted Fasteners
US4223586A (en) Anchor for sheet metal screws and the like
USD318102S (en) Threaded barb fitting
US5105704A (en) Adjustable saw blade fastener
USD284509S (en) Surgical staple
JP2000274412A (en) Anchor for attaching apparatus to wall
US4031935A (en) Captive fastener assembly
US4719701A (en) Dual blade saw attachment
DE3372724D1 (en) Device for blocking and/or clamping tools or the like
EP1080812A3 (en) Cutting tool and throwaway center drill
US4558493A (en) Variably accessible band clamp
JPS54113751A (en) Fixing means
USD261981S (en) Fastener rotating tool
US5833419A (en) Angularly accessible head for threaded connector
GB2166058A (en) Skipping rope spinner
JPS5811931Y2 (en) screw with washer
USD261980S (en) Driver for fasteners
USD243868S (en) Combined divot and cleat tool and distance estimating device
JPS6327128Y2 (en)
JPS58316Y2 (en) Locking devices such as cords
JPH05207616A (en) Board coupling device

Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)