AU2011101288B4 - Fall Arresting Bracket - Google Patents
Fall Arresting Bracket Download PDFInfo
- Publication number
- AU2011101288B4 AU2011101288B4 AU2011101288A AU2011101288A AU2011101288B4 AU 2011101288 B4 AU2011101288 B4 AU 2011101288B4 AU 2011101288 A AU2011101288 A AU 2011101288A AU 2011101288 A AU2011101288 A AU 2011101288A AU 2011101288 B4 AU2011101288 B4 AU 2011101288B4
- Authority
- AU
- Australia
- Prior art keywords
- plate
- mounting base
- eye
- fall arresting
- tongue
- 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
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- Roof Covering Using Slabs Or Stiff Sheets (AREA)
Abstract
A unitary fall arresting bracket is described. The unitary fall arresting bracket is suitable for mounting to a roof panel, and includes a mounting base comprising a plurality of through apertures disposed at selected positions 5 across the mounting base for fastening the mounting base to the roof panel and an eye suitable for attachment of a safety lanyard, the eye comprising a tongue integral with the mounting base and extending generally perpendicular thereto.
Description
AUSTRALIA Patents Act 1990 ORIGINAL COMPLETE SPECIFICATION INNOVATION PATENT Invention title: Fall Arresting Bracket The following statement is a full description of this invention, including the best method of performing it known to us: 2 FALL ARRESTING BRACKET Field of the Invention The invention relates generally to fall arresting brackets for use by workers when 5 working at heights. For example, providing an anchoring point when a worker is working on a roof of a dwelling or building or on an elevated floor of a multi-story building. Background of the Invention 10 Brackets for arresting the fall of workers working at heights are known. Generally, these brackets include a heavy mounting base plate which includes a central aperture for receiving an eye bolt which is fastened behind the plate. In this design, the plate must be worked so that the rear portion of the eye bolt is flush with the back of the plate. The plate also includes various fastening apertures 15 through the plate so'as to facilitate fastening to a roof or other elevated structure. This design and others like it are heavy, expensive to produce, and although secure, are generally too rigid which can increase injuries to falling workers upon the arrest of their fall from a height. In use, a worker attaches a safety line connected at one end to his or her safety 20 harness to the bracket mounted to a roof or other surface. If the flexibility is to be incorporated to known designs, it has to date been generally done in overly complicated and expensive ways. The present invention provides an improved bracket which at least provides the worker with a useful choice.
Summary of the Invention In accordance with one aspect of the present invention there is provided a unitary fall arresting bracket suitable for mounting to a variety of different roof panels, each of the different roof panels including a plurality of ridges spaced thereacross, 5 the roof panels differing from one another in the spacing distance between the ridges, the unitary fall arresting bracket including: a mounting base in the form of a plate of metal; an eye suitable for attachment of a safety lanyard, the eye comprising a tongue integral with the plate of metal, folded therefrom and extending generally 10 perpendicular thereto so that a port is formed through the plate and adjacent the tongue; and a plurality of through fastening apertures, each one of the plurality of through fastening apertures extending through the plate for fastening the plate to a roof panel, and at least selected ones of the plurality of through fastening 15 apertures being arranged at varying positions on a two-dimensional array across the plate so that the at least selected ones of the plurality of through fastening apertures are disposed at different spacing distances across the plate on at least one side of the eye so that the plate can be fastened to at least two adjacent ridges on a variety of different roof panels having differing ridge spacing distances. 20 The tongue may be disposed centrally on the mounting base. In order to form the eye, a perimeter of the tongue and an eye aperture may be cut from the mounting base and the tongue then folded from the plane of the base into a position generally perpendicular to the base. In this manner, the eye is clearly constructed from the same material and indeed constructed from the same blank as the 25 mounting base. Optionally the mounting base is generally rectangular or square when viewed in plan view. Optionally the mounting base is constructed from a sheet or a plate of material, the material being preferably steel or other metal. Preferably the mounting base is between about one and ten millimetres thick, and more preferably about three millimetres thick. 30 Optionally the fastening apertures disposed across the mounting base are arranged in positions to suit various roof panel ridge arrangements so that the 3A through fastening apertures align with selected ridge points on selected roof sheet profiles, In one embodiment of the fall arresting bracket, there are through apertures arranged on the base in rows of three holes, and disposed at ends of the mounting base. In that embodiment, there are four rows of three holes. This 5 arrangement is intended to suit a particular roof profile, however other arrangements of fastening apertures may be set out across the mounting base so that one base can be applied to one of a selection of different roof panels. In a preferred embodiment,' the mounting base is a sheet or plate of metal and further includes a plurality of through fastening apertures disposed on one side of 10 the eye and a plurality of through fastening apertures on the other side of the eye. It will be appreciated that as the tongue is pressed from the same blank of material as the mounting base, it is also preferably between one and ten millimetres thick, 4 and in a preferred embodiment found to have some commercial promise, the tongue is about three millimetres thick. Optionally the mounting base may include edge flanges which, in the same way as the tongue is formed, are cut out and folded so that they extend at approximately 5 70 degrees to the mounting base, though the extend in an opposite direction to the tongue. The edge flanges may provide some improved bending strength to the mounting base. The tongue is preferably disposed so that it faces along a longitudinal axis of the mounting base. When edge flanges are provided to the base, the edge flanges are 10 disposed so that they extend parallel with the longitudinal axis so that they provide strength in a longitudinal direction, where the tongue is least strong. A supplementary aperture is also provided in order to improve flexibility in a selected direction. Preferably, the aperture is a crescent shape and is disposed on an opposite side of the tongue to a tongue cut out aperture. The concave portion 15 of the crescent faces the tongue. The tongue has a roughly dome-shaped end so as to reduce stress concentrations. In this specification, where a document, act or item of knowledge is referred to or discussed, this reference or discussion is not an admission that the document, act or item of knowledge or any combination thereof was at the priority date: 20 (a) part of common general knowledge; or known to be relevant to an attempt to solve any problem with which this specification is concerned. The word 'comprising' and forms of the word 'comprising' as used in this description and in the claims do not limit the invention claimed to exclude any 25 variants or additions. Modifications and improvements to the invention will be readily apparent to those skilled in the art. Such modifications and improvements are intended to be within the scope of this invention.
5 Description of the Drawings In order to enable a clearer understanding, preferred embodiments of the invention will hereinafter be described with reference to the accompanying drawings in which: 5 Figure 1 is a plan view of a unitary fall arresting bracket in accordance with the preferred embodiment of the present invention; Figure 2 is an end elevation view of the unitary fall arresting bracket of Figure 1; Figure 3 is a side elevation view of the unitary fall arresting bracket of 10 Figure 1; Figure 4 is a plan view of a unitary fall arresting bracket in accordance with the second embodiment of the present invention; Figure 5 is an end elevation view of the unitary fall arresting bracket of Figure 4; 15 Figure 6 is a side elevation view of the unitary fall arresting bracket of Figure 4; Figure 7 is an isometric view of the unitary fall arresting bracket of Figures 1 to 3; and Figure 8 is an isometric view of the unitary fall arresting bracket of Figures 4 20 to 6. Detailed Description of a Preferred Embodiment Referring to Figures 1 to 3 there is shown a unitary fall arresting bracket generally indicated at 10 which includes a mounting base 12 and an eye 14. The mounting 25 base 12 is in the form of a sheet or plate 13 of steel. The sheet or plate 13 of steel includes a plurality of fastening apertures 15 which extend through the base 12. The fastening apertures are disposed in selected positions across the mounting base 12 so as to align with selected ridge arrangements disposed on one or more different kinds of roof panel (or sheet) profiles. In that regard, the fastening 30 apertures may be arranged in rows, or groups or in columns as set out in the figures.
6 The mounting base 12 sheet or plate of steel 13 is of a thickness about one to ten millimetres thick. In a preferred embodiment, the sheet or plate thickness is about three millimetres. The base shown in Figures 1 to 3 is roughly rectangular with a longitudinal axis shown at 16. 5 The eye 14 is in the form of a tongue 18 having a radiused head end 19 and generally straight sides 20. The tongue 18 is integral with the mounting base and extends upwardly therefrom. In order to form the tongue, the radiused perimeter 19 and straight sides 20 are cut from the base and the tongue 18 is folded from the base so that it is disposed at about 90* to the base 12. 10 Before the folding operation, the tongue is provided with a through aperture which is punched or otherwise cut out of the tongue 18 to form the eye 14. The through aperture 22 is circular. The eye 14 is disposed in a central position on the mounting base 12. Because the eye 14 is formed from the same blank of material that the mounting base is made from, the tongue is also preferably about 15 three millimetres thick. The tongue faces the longitudinal axis 16. A supplementary aperture 50 is also provided in order to improve flexibility in a selected direction. The aperture 50 is a crescent shape 52 and is disposed on an opposite side of the tongue to a tongue cut out aperture 55. A concave portion 54 of the crescent 52 faces the tongue 18. 20 Referring to Figures 4 to 6 there is shown another embodiment of unitary fall arresting bracket shown at 110. In the drawings 4 to 6, like numerals denote like components of the fall arresting bracket. The second embodiment in Figures 4 to 6 is very similar in design to that shown in Figures 1 to 3 and it is proposed that only the differences will be discussed hereinbelow. 25 The mounting base 112 is slightly more elongate than that shown in Figures 1 to 3 and in order to improve the strength in the longitudinal axis 116, there are shown and provided a pair of longitudinal flanges disposed at edges and shown at 130 and 131. Similarly with the tongue 114 the edge flanges 130 and 131 are integral with the mounting base 112 and in order to form them their perimeters are cut 30 from the mounting base 112 and formed, that is to say folded, into a position which is generally 70* from the mounting base 112. In operation, the unitary fall arresting bracket 110 is affixed by fasteners to the ridges of a roof panel (or sheet) through the fastening apertures 15. Fasteners are 7 fastened through any apertures 15 which align with selected ridges on the roof panel 15. A worker then connects a safely line or lanyard via a carabina or knot to the eye 14 or 114, and then the other end of the lanyard will be attached to his harness (not shown) should the worker fall from the roof to which the mounting 5 base 112 or 12 is attached, the workers fall will be arrested. In order to absorb some of the energy over a slightly increased time period to reduce discomfort during arrest of a fall, the integral tongue will bend (if the fall cases the safety lanyard to draw the tongue along the longitudinal axis 16, 116. Further increasing the flexibility during a fall, but without sacrificing strength, a 10 crescent shaped aperture is provided in and through the mounting base 12, 112. The crescent-shaped aperture causes some buckling of the mounting brackets around the tongue and crescent area.
Claims (5)
1. A unitary fall arresting bracket suitable for mounting to a variety of different roof panels, each of the different roof panels including a plurality of ridges spaced thereacross, the roof panels differing from one another in the spacing 5 distance between the ridges, the unitary fall arresting bracket including: a mounting base in the form of a plate of metal; an eye suitable for attachment of a safety lanyard, the eye comprising a tongue integral with the plate of metal, folded therefrom and extending generally perpendicular thereto so that a port is formed through the plate and 10 adjacent the tongue; and a plurality of through fastening apertures, each one of the plurality of through fastening apertures extending through the plate for mounting the plate to a roof panel, and at least selected ones of the plurality of through fastening apertures being arranged at varying positions on a two-dimensional 15 array across the plate so that the selected ones of the plurality of through fastening apertures are disposed at different spacing distances across the plate on at least one side of the eye so that the plate can be fastened to at least two adjacent ridges on a variety of different roof panels having differing ridge spacing distances. 20
2, The unitary fall arresting bracket in accordance with claim 1 wherein the mounting base further includes a plurality of through fastening apertures disposed on one side of the eye and a plurality of through fastening apertures on the other side of the eye.
3. The unitary fall arresting bracket in accordance with claim 1 or 2 wherein the 25 tongue is disposed generally centrally on the mounting base.
4. The unitary fall arresting bracket in accordance with any one of claims 1 to 3 wherein the mounting base includes edge flanges which extend at approximately 70 degrees to the mounting base.
5. The unitary fall arresting bracket in accordance with any one of claims 1 to 4 30 wherein the mounting base is square or rectangular when viewed in profile and the plate of metal is about three millimetres thick.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2011101288A AU2011101288B4 (en) | 2011-10-06 | 2011-10-06 | Fall Arresting Bracket |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2011101288A AU2011101288B4 (en) | 2011-10-06 | 2011-10-06 | Fall Arresting Bracket |
Publications (2)
Publication Number | Publication Date |
---|---|
AU2011101288A4 AU2011101288A4 (en) | 2011-11-10 |
AU2011101288B4 true AU2011101288B4 (en) | 2013-05-30 |
Family
ID=45465400
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU2011101288A Expired AU2011101288B4 (en) | 2011-10-06 | 2011-10-06 | Fall Arresting Bracket |
Country Status (1)
Country | Link |
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AU (1) | AU2011101288B4 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2008100063A4 (en) * | 2008-01-22 | 2008-02-21 | Rod Laing-Peach | Safety anchor |
WO2010000035A1 (en) * | 2008-07-03 | 2010-01-07 | Poldmaa, Kathleen | Roof anchor with shock absorping means |
-
2011
- 2011-10-06 AU AU2011101288A patent/AU2011101288B4/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2008100063A4 (en) * | 2008-01-22 | 2008-02-21 | Rod Laing-Peach | Safety anchor |
WO2010000035A1 (en) * | 2008-07-03 | 2010-01-07 | Poldmaa, Kathleen | Roof anchor with shock absorping means |
Also Published As
Publication number | Publication date |
---|---|
AU2011101288A4 (en) | 2011-11-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FGI | Letters patent sealed or granted (innovation patent) | ||
FF | Certified innovation patent | ||
HB | Alteration of name in register |
Owner name: RISSAFETY PTY LTD Free format text: FORMER NAME(S): ROOFSAFE-T-SYSTEMS PTY LIMITED |
|
MK22 | Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry |