GB2346407A - Roof safety barrier fitting - Google Patents
Roof safety barrier fitting Download PDFInfo
- Publication number
- GB2346407A GB2346407A GB9902546A GB9902546A GB2346407A GB 2346407 A GB2346407 A GB 2346407A GB 9902546 A GB9902546 A GB 9902546A GB 9902546 A GB9902546 A GB 9902546A GB 2346407 A GB2346407 A GB 2346407A
- Authority
- GB
- United Kingdom
- Prior art keywords
- assembly
- barrier
- post
- fitting
- attachment fitting
- 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
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/32—Safety or protective measures for persons during the construction of buildings
- E04G21/3204—Safety or protective measures for persons during the construction of buildings against falling down
- E04G21/3214—Means for working on roofs
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/32—Safety or protective measures for persons during the construction of buildings
- E04G21/3261—Safety-nets; Safety mattresses; Arrangements on buildings for connecting safety-lines
- E04G21/3276—Arrangements on buildings for connecting safety-lines
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/04—Means for fastening, supporting, or bracing scaffolds on or against building constructions
- E04G5/041—Means for fastening, supporting, or bracing scaffolds on or against building constructions for fastening scaffolds on roof frameworks or on roofs
- E04G5/043—Means for fastening, supporting, or bracing scaffolds on or against building constructions for fastening scaffolds on roof frameworks or on roofs for fastening scaffolds on gutters
Abstract
A roof safety barrier assembly 75 comprises a barrier having a barrier post 77, a roofing component 78 and an attachment fitting 71 rigidly connected to the roofing component 78. The barrier post 77 and attachment fitting 71 between them provide a spigot and socket by which they can be connected to one another by location of the spigot in the socket so that the barrier post 77 extends in a direction away from the roofing component 78 to provide a part of a barrier.
Description
Roof Safety Assembly
The present invention relates to a safety assemb for a roof of a building and in particular, to an assembly allowing a safety barrier to be secured to and erected on a component part of a roof of a building.
Some buildings, and in particular large commer al and industrial buildings such as factories, process plant, warehouses and distribution centr s, are constructed in a particular manner.
Initially a frame work of load bearing columns and roof members is erected. Fastening formations are provided on the frame members t which wall panels and roofing panels are attached to complete the shell of the building. any of the buildings built in this manner are very large with have high roofs. The attachmen of roofing panels and wall panels toward the top of the building is a dangerous activity an safety devices need to be put in place to protect the workmen, especially from falls..
One form of protection used during construction is to provide a safety barrier around the periphery of the roof by attaching scaffolding to the top of the wall frame members.
However, the scaffolding attached to the wall frime members interferes with and prevents the attachment of the top wall panels to the wall axe members near the roof and so the safety device needs to be dismantled before the 1 building work on the wall panels can be completed.
Another form of protection is to provide fastenings along the ridge of the roof of the building to which workmen can attach a safety line, especially for maintenance after completion of the initial construction. However, this requires the workman to climb to the top of the roof without protection again compro'ing their safety. Further, each time a workman needs to move significantly along the r of, the safety line must be disconnected and reconnected further along the ridge of the ro f, again compromising safety. A fastening can be provided on a runner on a rail along the ri go of the roof, but this again requires the workman to initially climb up and secure the safety line. Further, a runner and rail system is relatively sophisticated and expensive for the amount of time actually spent constructing the roof or subsequently maintaining the roof and so is not preferred. Furthermore, a runner and rail system would be left exposed to the elements and could tend to degrade or rust and would require significant maintenance to ensure its correct and safe operation which further adds to costs.
According to the present invention, there is provided a roof safety barrier assembly for use on a roof of a building comprising a barrier having a barrier post, a roofing component and an attachment fitting rigidly connected to the roofing component, in which the barrier post and attachment fitting between them provide a spigot and a socket by which they can be connected to one another by location of the spigot in the socket so that the barrier post extends in a direction away from the roofing component to provide a part of a barrier.
The present invention provides a simple and cheap roof safety device without complex or moving parts which would be prone to weather damage, and which can be put in place and used without exposing workmen to unnecessary hasards. A barrier is provided having a barrier post. An attachment fitting is rigidly connected to a roofing component. The barrier post and attachment fitting provide between them a spigot and a socket and the post is connected to the fitting by locating the spigot in the socket. The barrier post then extends away from the roofing component to provide a part of a barrier. The barrier can remain erected while other roofing components are being fastened to the building frame so that the building can be completed in safety. The spigot and socket connection of the barrier post and attachment fitting allow for a quick and easy erection of the barrier without the need for tools or complicated mechanism which may become damaged or weathered.
The term roofing component is consider to encompass any building part, fixture or fitting used in the construction of roofs and associated building parts, such as the eaves, and wall parts adjacent the roof such as gable ends. The roofing component can comprise a gutter section. This allows the barrier assembly to be erected around the periphery of the building providing a maximal safe roof working area. The roofing component can comprise a roof panel. This allows the safety barrier to be erected at any convenient location on a roof or at any particularly dangerous locations. The roofing component can comprise a ridge cap.
Safety barriers can be provided on roof ridges when appropriate and depending on the geometry of a particular roof. A ridge cap includes any finishing member used to cap the apex between two roof surfaces.
l The attachmentSitingcanprovidethesocketinwhichanendofthebarrierpostcanbe of the barrier post slidingly engages so as to correct the fitting and post.
I The attachment fitting can comprise a stub post a d an end of the barrier post can provide the socket in which the stub post can be received In this way, the barrier post has a cavity matching the stub post and into which the stub p st slidingly engages to connect the barrier post and fitting. The barrier post can have a colle extending beyond an end of the post to provide the socket in which the stub post can be received. A collar can be provided to accommodate differences in dimension or geomet between the attachment fitting and barrier posts, or to allow a solid barrier post to be attached to the stub post.
The attachment fitting can include a flange which is in surface to surface contact with the roofing component. The flange can help to impro e the rigidity of the fitting on the roof component by supporting the fitting and engaging he roof component over an increased surface area. Preferably, the attachment fitting is tened to the roofing component by the flange. The flange can provide an enhanced means of fastening the fitting to the roof component. More preferably, the flange extends e tirely around the attachment fitting. In this way the attachment formation is fully supporte and can be fastened to the roof component at several points thereby distributing the load from the barrier. The attachment fitting can be positioned eccentric to the flange. The attachment fitting can be positioned toward an edge of the flange. This allows a large surfacearea area the flange flange be fastened to the roofing component and allows the attachment fitting position to be varied so as to accommodate the presence of nearby roof parts, without reducing the amount of filnge area in contact with the roofing part.
The socket and the spigot can each have a circular crss section. The socket and spigot can also each have other curved, non-curved and polygo al cross sections which permit their sliding engagement. Preferably, the barrier post is a affold standard. This allows widely available building industry material to be used in the assembly increasing its flexibility and use.
The spigot and the socket can each have a non-circular cross section preventing relative rotation of the barrier post and attachment fitting. A barrier with a single post member may be required, for example to fill gaps or for comers of roofs, and a non-circular post will allow a non-rotating barrier to be provided in a simple manner.
The attachment fitting can include an aperture which can be engaged by a safety line. This allows for the provision of primary protection of a workman attached by the safety line to the fitting either as the barrier is being erected, or while not located on the roof side of the barrier. The aperture can be in the form of an eye. The aperture can be in the form of a hole in a wall of the attachment fitting. The safety line can be attached to the aperture by a releasable fastening means. The releasable fastening means can be in the form of a hook, a karabiner or a shackle.
The fitting can have a projection which extends below the plane of the roofing component.
In this way the fitting is more securely attached to the roofing component. Preferably, the projection is secured to a part of the building to provide support for the fitting. In this way the fitting is more securely fastened to the building and the building provides further support and enhanced rigidity.
A longitudinal axis of the attachment fitting can be substantially vertical. Hence the barrier post will be substantially vertical and the barrier will be substantially upright providing maximal protection.
The present invention will now be described, by way of example only, with reference to the accompanying drawings, in which:
Figures I a, b & c show cross sectional views of a first and a second attachment
fitting part of the asse. nbly according tu the invention and the fittings in use as part
of a roof safety barrier assembly a. ording t tne pesent invention;
Figure 2 shows a cross sectional view llustrating an alternative connection of a
barrier post part to an attachment fitting part of the assembly according to the
invention;
Figures 3a & b show cross sectional vi ws of a third attachment fitting part and the
attachment fitting in use as part of a ro f safety barrier assembly according to the I Figure 4 shows a cross sectional view f a fourth attachment fitting attachrnent fitting part
assembly according to the I
Figure 5 shows a schematic cross section through a ridge of a roof and a fifth
attachment fitting part of the assembly f the invention ; and
Figure 6 shows a schematic perspective view of an assembly according to the
invention at a roof beam part of a build ng. l The same parts in different Figures share common reference numerals.
With reference to Figures la, Ib and I c there ar shown respective cross sectional views of a first and a second attachment fitting part of the assembly of the invention, designated
generally by reference numerals 10 and 20, and roof safety barrier assembly according to the present invention, designated generally by rer erence numeral 30.
Figure 1 a shows an attachment fitting 10 having a support flange 11, fastening means (not shown) and a stub post 12 which provides a spig t. The support is in the form of a flat metal base plate. The support provides a flange extending entirely around the stub post 12.
The support has a top surface 13 and an under s ce 14. The stub post is in the form of an elongate rigid member, with a right circular cylindrical shape, which extends from the top surface 13 of the support. It extends from the su port in the direction of its longitudinal axis. The stub post 12 is in the form of a hollow losed cylinder and is closed at its top end 15 to which an eye 16 is attached. The eye allows a safety line to be attached to the fitting as will be described later.
The stub post is mounted eccentric to the base plate. The base plate may be a regular rectilinear shape, for example square or rectangular, or any shape appropriate to the location of the roofing part to which it is fastened. The stub post is positioned eccentric to the base plate so that a large surface area of base plate can be presented to the roofing component to enhance fastening and the stub post position on the base plate can be selected to accommodate the presence of other roof parts, for example over hanging roof panels as illustrated in Figure 1 c.
Holes may be provided in the base plate so that the fitting can be fastened to a roofing component by fastening means in the form of bolts. A hole can be provided at each corner of the base plate. It will be appreciated that other fastening means can be provided to secure the fitting to the roofing component. These include, but are not limited to, mechanical fastening means, such as screws, rivets and clips, and adhesive fastening means, such as welding, brazing and adhesives.
Figure 1 b shows an attachment fitting 20 which includes a support flange 21 and a post 22 providing a spigot. The support is in the form of a flat, metal base plate. The support provides a flange extending entirely around the post 22. Fastening means are provided as per the first example. A hole is provided at each comer of the plate to allow the base plate to be secured to a roof part by bolt fastening means. The post 22 is in the form of an elongate right circular cylinder which extends from the top surface and from the under surface of the support in the direction of its longitudinal axis. The post is a closed hollow cylinder with a cap 23 at a top end and a cap 24 at a bottom end. The attachment formation has a projection 25 extending downwardly from the flange. An eye 26 is attached to the attachment formation at the top cap 23 to accept a hook of a safety line as will be described later.
Figure 1 c illustrates how the fitting relates to the other parts of the assembly. Figure I c shows a schematic cross section through the eaves portion of a building 30. The building has a load bearing frame work comprising portal frame columns 31 for the walls and portal frame roof members 32. Roof panels 3 are attached lo the roof frame members by purlins 34 or sheeting rail. Wall panels 35 are attached to the frame columns 31 by sheeting rails 62 to provide the building walls. A boundary wall gutter 36 is provided between the roof panels and the wall panels. An edge cap 56 can be provided.
The roof safety barrier assembly comprises a b'er post 38, an attachment fitting 20 and a roofing component 36. The barrier post is in th'form of a right circular hollow cylinder having a socket 58 at an end 59. In particular t e barrier post is a scaffold standard. The second example attachment fitting 20 is fastened to a roofing component in the form of a gutter section 36 part of the roof of the building The post 20 is positioned eccentric to the flange 21 so as to accommodate the presence of the overhanging roof panel 33 without having to reduce the surface area of the flange. e protrusion 25 of the attachment formation extends through a hole in the gutter section and below the plane of the gutter section. The protrusion is secured to the portal : rame column 31 part of the building by strapping and packing 37. The fitting 20 is faste led in the gutter 36 by bolts (not shown) and a seal (not shown) is provided either betwee the under face of the base plate and the gutter surface or around the base plate so as to event moisture escaping from the gutter.
Once fastened to the gutter, the safety barrier c be erected. erected. safety barrier comprises posts of tubular scaffold standards with a handra extending between the posts. The socket of the scaffold standard 38 slidingly engages the pigot 22 of the attachment fitting 20 and the barrier is simultaneously secured to the roof nd erected. The dimensions of the spigot are selected so that there is a snug fit between th spigot and the socket provided by the scaffold standard. The provision of a protrusion 5 which extends below the plane of the gutter section and can be secured to the frame w rk of the building enhances the securing of the fitting to the building, as it is not by the ge alone, alone, enhances enhances fitting's resistance to turning moments owing to forces lied to the barrier.
The fitting 20 can be provided as an integral part f a gutter, in which case the base plate forms part of the gutter or as an independent retr-St part. It will be appreciated that as the barrier is not fastened directly to the wall col the wall panels of the building can be attached to the wall column with the safety barrie in place. Further, with the fitting situated in the gutter, the roof panels can be attac ed with the roof safety barrier in place.
Hence the assembly helps prou projection fcr ! : oth construction and maintenance purposes.
Attachment fitting 10 can be attached on any roofing component surface and does not require a void beneath it as does fitting 20. Fitting 10 is shown fastened to a roofing panel but can be fastened in the gutter 36 in the same position as fitting 20. Fitting 10 is fastened to the roof part using any suitable fastening means as described earlier. Base plate 11 may have any profile that is required to match its surface shape to the roof part to which it is to be fastened, e. g. curved in the case of a curved gutter. Fitting 10 may be provided as an integral part of a building part, e. g. incorporated into a gutter, or as an independent retro-fit part. A roof safety device assembly would comprise the roofing panel 33, the attachment fitting 10 and a barrier post 38 connected to the fitting as described previously.
An eye 16 is provided at the top of the attachment fitting to provide primary protection when the secondary protection of the safety barrier is being assembled or when short term maintenance or roof access is required. A workman approaching the eave portion of the building attaches the hook of a safety line to the eye 16,26 thereby protecting himself. A safety barrier can then be erected for subsequent roof work while the workman is already protected.
With reference to Figure 2, there is shown a cross sectional view illustrating an alternative connection of a barrier post part to an attachment fitting part 10 of the assembly according to the invention. A collar 39 is provided at the end 59 of the scaffold standard 38 and extending beyond the end of the scaffold standard to provide a socket to engage around the spigot of the attachment fitting 10 to allow sliding engagement of the fitting and barrier post. The use of a collar with appropriate dimensions and shapes allows for the attachment of scaffold standards of any dimension and shape to the attachment fitting thereby providing a universal interface.
With reference to Figure 3a there is shown a cross sectional view of an attachment fitting part, designated generally by reference numeral 40, of the assembly according to the present invention. The fitting 40 includes a support flange 41 in the form of a flat, metal plate, with a top surface 42 and an under surface 43. The support provides a flange extending around the fitting. The fitting also includes a right circular gaivanised metal cylinder 44 extending from the top and under surfaces of the support in the dilection of its longitudinal axis which
provides a socket. The socket has a cavity 45 cbsed at one end by a cap 46. A replaceable top cap (not shown) can be provided to close the socket when not in use to prevent it
retaining liquids.
Figure 3b shows a cross sectional view of the fit ing 40 as part of a roof safety barrier
assembly at an eaves portion of a building. A hole is provided in the gutter 35 through which a projection 47 of the attachment member extends below the plane of the gutter
section 36. The flange 41 is fastened to the gutter by fastening means and seals (not
shown). The projection 47 of the attachment fitting is further secured by tie 48. A barrier 49 has barrier posts, provided by scaffold standads 38, and handrails 50 extending between the posts. It will be appreciated that other forms of barrier having barrier posts can also be used, for example a barrier comprising a panel e ending between the barrier posts. An end of each barrier post provides a spigot. The barri ber can then be connected to the fitting by slidingly engaging the spigots formed by ends of the scaffold standards into the sockets of respective fittings. In this way the barrier is sim Itaneously attached to the roof and erected.
It will be appreciated that it would be possible toi have the cylinder extending from either only the top surface or only the bottom surface of the support. The first option would allow the fitting to be used without a void beneat the fitting and the second option would allow the provision of a flush ntting.
Figure 4 shows a cross sectional view of a fourth example of an attachment fitting part, designated generally by reference numeral 58, fas tened to a roof panel 33. In the previous examples, the spigot or socket has extended in a irection substantially perpendicular to the base plate. In this example the relative angle of t e rigid metal cylinder 51 providing the socket and the base plate 52 has been selected su that the attachment formation is substantially vertical when the fitting is attached in use to a part of a building 33. Hence, a fitting 58 configured in this way can provide a vertical safety barrier irrespective of the attitude of the surface to which it is fastened. aperture 53 is provided toward a top end of the cylinder so that a safety lina car be secuicc'to tne fitling A further aperture 54 is provided at the base of the cylinder to provide a drain to prevent the accumulation of liquid in the socket.
Figure 5 shows a schematic cross section through a ridge of a roof and an attachment fitting part, designated generally by reference numeral 60, of the assembly of the invention. The roof ridge has roof panels 33, meeting at an apex where they are capped by ridge cap 61.
The attachment formation has a stub post 62 extending substantially vertically and providing a spigot, with an eye 63 at a top end. A metal flange 64 extends around the spigot and is in face to face engagement with the ridge cap roofing component. Alternative eccentric positions of the spigot with respect to the flange are shown in ghost.
Figure 6 shows a schematic perspective view of an assembly according to the invention at a roof beam part of a building. The attachment fitting 70 includes a flange 71 and a metal, right circular cylinder 72 with a closed end 73 which provides a socket. A barrier 75 has handrails 76 and a barrier post provided by a scaffold standard 77. An end of the barrier post provides a spigot which engages the socket. The attachment fitting 70 is fastened to a structural member 78 roofing component of the building. The structural member is a roof beam or joist.
Although the barrier has been shown incorporating hand rails, other forms of barrier having barrier posts are also envisaged. These include panel barriers in which a panel extends between barrier post. The barrier may be solid perforated, for example in the form of a mesh, to allow wind to pass through the barrier. It will be appreciated that a single section of barrier can be provided so that a workman can erect the section of barrier at the work location and then move on to a new location and take the barrier with him.
It will be appreciated that numerous advantages arise from the assembly of the present invention, including, but not limited to: providing protection during construction and/or maintenance ; retro-fit or an integral part; simplicity, resulting in low cost and low maintenance ; highly adaptable to different buildings and/or different safety devices; and the provision of primary and secondas y protection i ('i workmen. Further advantages include the ease of assembly which obviates the need of a scarfoider ; ease of maintenance, as there are no sophisticated moving parts; and the fact ttat either permanent of temporary protection can be provided.
Claims (18)
- CLAIMS : I. A roof safety barrier assembly for use on a roof of a building comprising: a barrier having a barrier post; a roofing component; and an attachment fitting rigidly connected to the roofing component, in which the barrier post and attachment fitting between them provide a spigot and a socket by which they can be connected to one another by location of the spigot in the socket so that the barrier post extends in a direction away from the roofing component to provide a part of a barrier.
- 2. An assembly as claimed in claim 1, in which the roofing component comprises a gutter section.
- 3. An assembly as claimed in claim 1, in which the roofing component comprises a roof panel.
- 4. An assembly as claimed in claim 1, in which the roofing component comprises a ridge cap.
- 5. An assembly as claimed in claim 1, in which roofing component comprises a structural member
- 6. An assembly as claimed in any preceding claim. in which the attachment fitting provides the socket in which an end of the barrier post can be received.
- 7. An assembly as claimed in claim 1, in which the attachment fitting comprises a stub post and an end of the barrier post provides the socket in which the stub post can be received.
- 8. An assembly as claimed in claim 7, in which the barrier post has a collar extending beyond an end of the post to provide the socket in which the stub post can be received.
- 9. An assembly as claimed in any preceding claim, in which the attachment fitting includes a flange which is in surface to surface contact with the roofing component.
- 10. An assembly as claimed in claim 9, in which the attachment fitting is fastened to the roofing component by the flange.
- 11. An assembly as climed in claim 9 or claim 10, in which the flange extends entirely around the attachment fitting.
- 12. An assembly as claimed in any preceding claim, in which the socket and the spigot each have a circular corss section.
- 13. An assembly as claimed in claim 1, in which the barrier post is a scaffold standard.
- 14. An assembly as claimed in claim 1, in which the spigot and the socket each have a non-circular cross section preventing relative rotation of the barrier post and attachment fitting.
- 15. An assembly as claimed in any preceding claim in which the attachment fitting includes an aperture which can be engaged by a safety line.
- 16. An assembly as claimed in any preceding claim in which the fitting has a projection which extends below the plane of the roofing component.
- 17. An assembly as claimed in claim 16, in which the projection is secured to a part of the building to provide support for the fitting.
- 18. An assembly as claimed in any preceding claim, in which a longitudinal axis of the attachment fitting is substantially vertical.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9902546A GB2346407B (en) | 1999-02-05 | 1999-02-05 | Roof safety assembly |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9902546A GB2346407B (en) | 1999-02-05 | 1999-02-05 | Roof safety assembly |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9902546D0 GB9902546D0 (en) | 1999-03-24 |
GB2346407A true GB2346407A (en) | 2000-08-09 |
GB2346407B GB2346407B (en) | 2003-08-13 |
Family
ID=10847140
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9902546A Expired - Fee Related GB2346407B (en) | 1999-02-05 | 1999-02-05 | Roof safety assembly |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2346407B (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4015827A (en) * | 1975-11-21 | 1977-04-05 | Brand Harold E | Support stanchion |
GB2229216A (en) * | 1989-03-16 | 1990-09-19 | J P Whelan & Sons | Guardrail support |
US5029670A (en) * | 1990-06-22 | 1991-07-09 | Whitmer Gerald T | Frame erection safety system and components thereof |
GB2291920A (en) * | 1994-07-29 | 1996-02-07 | Alexander Robertson Sneddon | Safety rail mounting |
US5560588A (en) * | 1995-02-21 | 1996-10-01 | Hilliard; J. Hilton | Support for temporary guard railing |
EP0738809A1 (en) * | 1995-04-14 | 1996-10-23 | Harrison G. Purvis | Temporary guard rail system and method of using the same |
-
1999
- 1999-02-05 GB GB9902546A patent/GB2346407B/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4015827A (en) * | 1975-11-21 | 1977-04-05 | Brand Harold E | Support stanchion |
GB2229216A (en) * | 1989-03-16 | 1990-09-19 | J P Whelan & Sons | Guardrail support |
US5029670A (en) * | 1990-06-22 | 1991-07-09 | Whitmer Gerald T | Frame erection safety system and components thereof |
GB2291920A (en) * | 1994-07-29 | 1996-02-07 | Alexander Robertson Sneddon | Safety rail mounting |
US5560588A (en) * | 1995-02-21 | 1996-10-01 | Hilliard; J. Hilton | Support for temporary guard railing |
EP0738809A1 (en) * | 1995-04-14 | 1996-10-23 | Harrison G. Purvis | Temporary guard rail system and method of using the same |
Also Published As
Publication number | Publication date |
---|---|
GB2346407B (en) | 2003-08-13 |
GB9902546D0 (en) | 1999-03-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20060205 |