WO2024082268A1 - End integrated advance guardrail for scaffolding systems - Google Patents

End integrated advance guardrail for scaffolding systems Download PDF

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Publication number
WO2024082268A1
WO2024082268A1 PCT/CN2022/126691 CN2022126691W WO2024082268A1 WO 2024082268 A1 WO2024082268 A1 WO 2024082268A1 CN 2022126691 W CN2022126691 W CN 2022126691W WO 2024082268 A1 WO2024082268 A1 WO 2024082268A1
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WO
WIPO (PCT)
Prior art keywords
vertical
post
guardrail
rail
locating pin
Prior art date
Application number
PCT/CN2022/126691
Other languages
French (fr)
Inventor
Peter Rogers
Original Assignee
At-Pac China Business Trust
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 At-Pac China Business Trust filed Critical At-Pac China Business Trust
Priority to PCT/CN2022/126691 priority Critical patent/WO2024082268A1/en
Publication of WO2024082268A1 publication Critical patent/WO2024082268A1/en

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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
    • E04G5/00—Component parts or accessories for scaffolds
    • E04G5/14—Railings
    • E04G5/144—Railings specific for the lateral, i.e. short side of a scaffold
    • 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
    • E04G5/10—Steps or ladders specially adapted for scaffolds
    • 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
    • E04G5/14—Railings
    • E04G5/145—Toe boards therefor
    • 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
    • E04G5/14—Railings
    • E04G5/147—Railings specially adapted for mounting prior to the mounting of the platform
    • 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
    • E04G7/00—Connections between parts of the scaffold
    • E04G7/30—Scaffolding bars or members with non-detachably fixed coupling elements
    • E04G7/301—Scaffolding bars or members with non-detachably fixed coupling elements for connecting bars or members which are parallel or in end-to-end relation
    • 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
    • E04G7/00—Connections between parts of the scaffold
    • E04G7/30—Scaffolding bars or members with non-detachably fixed coupling elements
    • E04G7/32—Scaffolding bars or members with non-detachably fixed coupling elements with coupling elements using wedges
    • 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
    • E04G7/00—Connections between parts of the scaffold
    • E04G7/30—Scaffolding bars or members with non-detachably fixed coupling elements
    • E04G7/34—Scaffolding bars or members with non-detachably fixed coupling elements with coupling elements using positive engagement, e.g. hooks or pins
    • 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
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/24—Scaffolds primarily resting on the ground comprising essentially special base constructions; comprising essentially special ground-engaging parts, e.g. inclined struts, wheels
    • E04G2001/242—Scaffolds movable on wheels or tracks

Definitions

  • the present disclosure relates generally to scaffolding systems, and more specifically to a guardrails adapted to be erected in advance of walking platforms for workers on the scaffolding system.
  • Modular scaffold support systems are commonly used to provide vertical support for structures as well as for use in defining a raised work platform adjacent a structure. Scaffold systems are also used for providing temporary structures such as work platforms or removable bleacher-type seating.
  • One of the most common scaffolding system is modular and is designed to allow convenient connection of horizontal members to tubular steel upright members.
  • the tubular steel upright members have a series of connecting members positioned in the length of the vertical upright and the horizontal members include at the ends thereof a component designed to connect with any of a series of connecting nodes provided on vertical upright scaffold members.
  • This type of modular connection of scaffold components is convenient and requires less expertise in the assembly of support structures or raised platforms.
  • the present disclosure may comprise one or more of the following features and combinations thereof.
  • a scaffolding system includes a scaffolding assembly configured to support a worker above ground adjacent a structure and an end guardrail for integration with the scaffolding assembly.
  • the scaffolding assembly includes a plurality of vertical scaffold posts, a plurality of ledgers that extend between the scaffold posts, and horizontal work platforms supported by the ledges so that workers to walk on the scaffolding assembly.
  • the plurality of vertical scaffold posts includes a first vertical scaffold post and a second vertical scaffold post spaced apart from the first vertical scaffold post.
  • the end guardrail is coupled with the first and second vertical scaffold posts to block the user from passing through a space between the first vertical post and the second vertical post.
  • Fig. 1 is a perspective view of a mobile scaffold system having a scaffold assembly and end guardrail in accordance with the present disclosure
  • Fig. 2 is a perspective view of the end guardrail of Fig. 1;
  • Fig. 3 is a front elevation view of the end guardrail of Fig. 2;
  • Fig. 4 is a side elevation view of the end guardrail of Fig. 2;
  • Fig. 5 is a top view of the end guardrail of Fig. 2;
  • Fig. 6 is a top view of one of the locating pin arms including in the end guardrail of Fig. 2;
  • Fig. 7 is a side elevation view of one of the ledger head connectors included in the end guardrail of Fig. 2;
  • Fig. 8 is a top view of the ledger head connector of Fig. 7;
  • Fig. 9 is a perspective view of the scaffold system showing one of the locating pin arms of the end guardrail received in a rosette of a vertical scaffold post of the scaffold assembly and one of the ledger head connectors coupled with another rosette of the vertical scaffold post;
  • Fig. 10 is a detail perspective view of the scaffold system of Fig. 1 showing one of the locating pin arms of the end guardrail received in the first rosette of the vertical scaffold post;
  • Fig. 11 is a detail perspective view of the scaffold system showing one of the ledger head connectors coupled with the second rosette of the vertical scaffold post.
  • a temporary or permanent guardrail for a scaffolding system is to be install before the scaffold erection workers can erect or stand on a working platform (floor) on the scaffolding system.
  • the present disclosure provides an advance installation, integrated end guardrail 10 that is configured to be installed in advance of (before) workers climb to the next higher level on a scaffolding system 110 as the scaffolding system 110 is being erected as suggested in Fig. 1.
  • the scaffolding system 110 includes a scaffold assembly 111 and the end guardrail 10.
  • the scaffolding assembly 111 is a mobile assembly in the illustrative embodiment and, in other embodiments, may be secured to ground or other structure.
  • the scaffolding assembly 111 includes a plurality of scaffold posts 112, ledgers 114 that extend between the scaffold posts 112, and horizontal work platforms 116 for workers to walk upon.
  • Each scaffold post 112 has one or more scaffolding rosettes 118 fixed thereon for coupling the ledgers 114 and end guardrail 10, etc. with the scaffold posts 112.
  • the workers may climb through a hatch way 122 or gap in the upper platform on the scaffolding assembly 111. As they climb upward, they may attach their fall arrest equipment to the end guardrail 10 or other guardrail ledgers. In this manner, the workers may be attached to the end guardrail 10 at all or substantially all times while the scaffolding system 110 is being built to help prevent the workers from falling from a height.
  • the end guardrail 10 is configured to interlock with a first vertical scaffold post 112A and a second vertical scaffold post 112B of the scaffolding assembly 111 as shown in Figs. 1 and 9-11.
  • the second vertical scaffold post 112B is spaced apart from the first vertical scaffold post 112A.
  • the scaffolding assembly 111 may further include ledgers 114 extending between and interconnecting the first vertical scaffold post 112A and the second vertical scaffold post 112B, and work platforms 116 supported on the ledgers 114.
  • the first vertical scaffold post 112A has a first upright member 113A, a first rosette 118A, and a second rosette 118B spaced apart vertically from the first rosette 118A.
  • the second vertical scaffold post 112B has a second upright member 113B, a third rosette 118C, and a fourth rosette 118D spaced apart vertically from the third rosette 118C.
  • Each rosette 118 includes a plurality of holes formed therein as shown in Figs. 10 and 11.
  • the rosettes 118 each include a set of holes 130 and a set of holes 132.
  • Each hole 132 included in the set of holes 132 are elongated circumferentially relative to the holes 130 such that the each hole 132 of the set of holes 132 have a different shape compared to each hole 130 in the set of holes 130 as shown in Figs. 10 and 11.
  • Each hole 130 of the set of holes 130 has an ovular shape.
  • the holes alternate circumferentially around the rosette 118 such that the pattern goes hole 130, hole 132, hole 130, hole 132, etc. as shown in Figs. 10 and 11.
  • the end guardrail 10 is configured to block the worker or user from passing through a space between the first vertical scaffold post 112A and the second vertical post 112B as suggested in Fig. 1.
  • the end guardrail 10 includes a rail assembly 12, locating pin arms 14, 16, and ledger head connectors 18, 20 as shown in Figs. 1-11.
  • the rail assembly 12 is configured to provide railing for the workers.
  • the locating pin arms 14, 16 are configured to locate the end guardrail 10 on the scaffold posts 112A, 112B during assembly and to interlock with the scaffold posts 112A, 112B.
  • the ledger head connectors 18, 20 removably secure the end guardrail 10 to the scaffold posts 112A, 112B via an interlocked connection.
  • the ledger head connectors 18, 20 are spaced apart vertically from locating pin arms 14, 16 as shown in Figs. 1-4 and 9. Each of the locating pin arms 14, 16 locate the end guardrail 10 at a corresponding pivot point on the scaffold posts 112A, 112B. The locating pin arms 14, 16 interlock the end guardrail 10 with the scaffold posts 112A, 112B at the pivot points on the scaffold posts 112A, 112B. Each of the ledger head connectors 18, 20 secure the end guardrail 10 to each of the scaffold posts 112A, 112B at a second point location on the scaffold posts 112A, 112B. The second point locations are spaced apart vertically from the pivot points along the scaffold posts 112A, 112B. In the illustrative embodiment, the rosettes 118 define the pivot points/point locations.
  • the rail assembly 12 includes a first vertical guardrail post 24, a second vertical guardrail post 26, and a first rail 28 (top rail) that extends horizontally between and interconnecting the first vertical guardrail post 24 and the second vertical guardrail post 26 as shown in Figs. 1-3.
  • the rail assembly 12 further may include a second rail 30 (mid rail) and includes such second rail 30 in the illustrative embodiment.
  • the first rail 28 is adapted to block the user or worker from passing through the space between the scaffold posts 112A, 112B.
  • the first rail 28 and the second rail 30 both block the user or worker from passing through the space between the scaffold posts 112A, 112B.
  • the first vertical guardrail post 24 and the second vertical guardrail post 26 are spaced apart to define an empty space or opening 32 between the first vertical guardrail post 24 and the second vertical guardrail post 26.
  • the first vertical guardrail post 24 includes an upper end 34 and a lower terminating end 36 spaced apart vertically from the upper end 34 as shown in Figs. 2 and 3.
  • the second vertical guardrail post 26 includes an upper end 38 and a lower terminating end 40 spaced apart vertically from the upper end 38.
  • the first rail 28 extends between and interconnects the upper ends 34, 38 of the first vertical guardrail post 24 and the second vertical guardrail post 26.
  • the upper ends 34, 38 are curved toward each other.
  • the first vertical guardrail post 24, the second vertical guardrail post 26, and the first rail 28 are integrally formed from a single tube.
  • the second rail 30 extends horizontally between and interconnects the first vertical guardrail post 24 and the second vertical guardrail post 26 as shown in Figs. 2 and 3.
  • the second rail 30 is spaced apart from the first rail 28 such that the second rail 30 is located vertically between the first rail 28 and the ledger head connectors 18, 20.
  • the second rail 30 is aligned with or parallel to the first rail 28.
  • the locating pin arms 14, 16 are spaced apart from the first rail 28 such that the locating pin arms 14, 16 are vertically aligned with the second rail 30.
  • the second rail 30 is welded to the guardrail posts 24, 26.
  • the second rail 30, a portion of the first vertical guardrail post 24 from the second rail 30 to the first terminal end 36, and a portion of the second vertical guardrail post 26 from the second rail 30 to the second terminal end 40 cooperate to define a U-shaped opening 32 that opens downwardly to allow free access into the U-shaped opening 32.
  • the first rail 28, the second rail 30, an upper portion of the first guardrail post 24 extending between the first rail 28 and the second rail 30, and an upper portion of the second guardrail post 26 extending between the first rail 28 and the second rail 30 cooperate to define a generally rectangular opening that is free of any structure.
  • the locating pin arms 14, 16 are configured to locate the end guardrail 10 on the scaffolding assembly 111 during assembly of the scaffolding system 110 as suggested in Figs. 1, 9, and 10.
  • the locating pin arms 14, 16 include a first locating pin arm 14 and a second locating pin arm 16.
  • the first locating pin arm 14 is fixed with the first vertical guardrail post 24.
  • the second locating pin arm 16 is fixed with the second vertical guardrail post 26.
  • the locating pin arms 14, 16 are welded with the guardrail posts 24, 26.
  • the first locating pin arm 14 includes a first extension member 46 and a first locating pin 48 as shown in Figs. 2, 6, and 10.
  • the first extension member 46 extends away from the first vertical guardrail post 24.
  • the first locating pin 48 extends into the first rosette 118A of the first vertical scaffold post 112A.
  • the second locating pin arm 16 includes a second extension member 50 and a second locating pin 52.
  • the second extension member 50 extends away from the second vertical guardrail post 26.
  • the second locating pin 52 extends into the third rosette 118C of the second vertical scaffold post 112B.
  • the second rail 30 is vertically aligned with the first extension member 46 and the second extension member 50 in the illustrative embodiment.
  • the first extension member 46 and the second extension member 50 are tubes with crimped or deformed ends coupled with the first locating pin 48 and the second locating pin 52, respectively as suggested in Fig. 6.
  • the second locating pin arm 16 is substantially the same as the first locating pin arm 14 and features described for the first locating pin arm 14 are applicable to the second locating pin arm 16.
  • the first extension member 46 of the first locating pin arm 14 extends horizontally away from the first vertical guardrail post 24 as shown in Figs. 6 and 10.
  • the first locating pin 48 and the second locating pin 52 are each circular in cross-section when viewed vertically.
  • the first locating pin 48 extends generally vertically downwardly through a hole 130 formed in the first rosette 118A as shown in Fig. 10.
  • the first extension member 46 extends toward the first vertical scaffold post 112A at a first angle 56 relative to the first rail 28 (the first rail being aligned with the second rail 30) as suggested in Fig. 6.
  • the first angle 56 is between about 10 degrees and about 50 degrees.
  • the first angle 56 is between about 20 degrees and about 40 degrees.
  • the first angle 56 is about 30 degrees.
  • the first angle 56 is selected based on a length of the first extension member 46, among other possible factors, so that the first locating pin 48 is aligned with and received by one of the holes 130 in the rosette 118A as shown in Fig. 10.
  • the ledger head connector 18, 20 are configured to couple the end guardrail 10 to the scaffolding assembly 111 as suggested in Figs. 1 and 11.
  • the ledger head connectors 18, 20 include a first ledger head connector 18 and a second ledger head connector 20.
  • the first ledger head connector 18 is fixed with the first vertical guardrail post 24.
  • the second ledger head connector 20 is fixed with the second vertical guardrail post 26.
  • the first ledger head connector 18 has a first support member 60, a first ledger head 62, and a first wedge 63.
  • the first support member 60 extends away from a lower first terminal end 36 of the first vertical guardrail post 24.
  • the first ledger head 62 is fixed with the first support member 60 and removably coupled with the second rosette 118B of the first vertical scaffold post 112A.
  • the wedge 63 extends through the first ledger head 62 and the second rosette 118B to couple the end guardrail 10 to the first vertical scaffold post 112A.
  • the second ledger head connector 20 has a second support member 64, a second ledger head 66, and a second wedge 69.
  • the second support member 64 extends away from the lower terminal end 40 of the second vertical guardrail post 26.
  • the second ledger head 66 is coupled with the second support member 64 and removably coupled with the fourth rosette 118D of the second vertical scaffold post 112B.
  • the second wedge 69 extends through the second ledger head 66 and the fourth rosette 118D to couple the end guardrail 10 to the second vertical scaffold post 112B.
  • the second ledger head connector 20 is substantially the same as the first ledger head connector 18 and features described for the first ledger head connector 18 are applicable to the second ledger head connector 20.
  • the first support member 60 of the first ledger head connector 18 extends downwardly and distally away from the first vertical guardrail post 24 toward the first vertical scaffold post 112A at a second angle 58 relative to the first rail 28 as shown in Fig. 8.
  • the first angle 56 is different than the second angle 58.
  • the second angle 58 is between about 15 degrees and about 60 degrees.
  • the second angle 58 is between about 20 degrees and about 55 degrees.
  • the second angle is about 45 degrees.
  • the second angle 58 is selected based on a length of the first support member 60, among other possible factors, so that the first ledger head 62 receives the second rosette 118B and aligns with one of the holes 132 in the second rosette 118B as shown in Fig. 11.
  • the ledger head connectors 18, 20 are at a different angle compared to the locating pin arms 14, 16 so that each of the ledger head connectors 18, 20 align with a hole 132, while each of the locating pin arms 14, 16 align with a hole 130 as shown in Figs. 10 and 11.
  • the holes alternate circumferentially around the rosette 118 such that the pattern goes hole 130, hole 132, hole 130, hole 132, etc. as shown in Figs. 10 and 11.
  • the second angle 58 is different from the first angle 56 so that the ledger head connectors 18, 20 will align with and extend into the holes 132 instead of the holes 130.
  • Each of the first and second support members 60, 64 includes a bracket 65 and a support body 67 as shown in Figs. 7 and 8.
  • the bracket 65 of the first support member 60 has a horizontal segment 68 coupled with the first vertical guardrail post 24 and a vertical segment 70 coupled with the first ledger head 62.
  • the bracket 65 may further include a joining segment 72 that extends between and interconnects the horizontal segment 68 and the vertical segment 70.
  • the illustrative embodiment of the bracket 65 does include such a joining segment 72 that extends at an angle between the horizontal segment 68 and the vertical segment 70.
  • the support body 67 extends between and interconnects the horizontal segment 68 and the vertical segment 70 as shown in Fig. 7.
  • the support body 67 is a flat plate as shown in Fig. 7.
  • the support body 67 is formed to define a cutout that extends into the support body at the end adjacent the horizontal segment 68 of the bracket 65.
  • the support body 67 is spaced apart from the joining segment 72.
  • the support body 67 is welded with the bracket 65.
  • the bracket and support body of the second support member 64 are substantially similar to the bracket 65 and support body 67.
  • the rail assembly 12, first extension member 46, and the second extension member 50 are all formed of metallic tubes that are welded together.
  • the brackets 65 and flat plate 67 are made of flat metal stock.
  • the first ledger head 62 and the second ledger head 66 are conventional ring lock style ledger heads that include an upper body and a lower body that are formed with a horizontal slot therebetween for receiving the rosettes 118.
  • the support body 67 of the first support members 60 extends at an angle 74 relative to the first vertical guard post 24 as shown in Fig. 7.
  • the angle 74 is between about 10 degrees and about 40 degrees.
  • the angle 74 is between about 20 degrees and about 30 degrees.
  • the angle 74 is about 30 degrees.
  • the angle 74 is selected based on a position of the rosette 118B relative to the other rosette 118A, among other possible factors, so that the first wedge 63 is aligned with and received by one of the holes 132 in the rosette 118B as shown in Fig. 10.
  • a method of assembling the scaffolding system 110 includes providing the scaffolding assembly 111 and the end guardrail 10.
  • the method includes moving the end guardrail 10 relative to the scaffolding assembly 111 so that the first locating pin arm 14 is aligned vertically with the first scaffold rosette 118A and the second locating pin arm 16 is aligned vertically with the third scaffold rosette 118C.
  • the method includes lowering the end guardrail 10 so that a portion, first locating pin 48, of the first locating pin arm 14 is received in the first scaffold rosette 118A and a portion, second locating pin 52, of the second locating pin arm 16 is received in the third scaffold rosette 118C.
  • the end guardrail 10 is then pivoted about the pivot points at the first scaffold rosette 118A and the third scaffold rosette 118C so that the first terminal end 36 of the first guardrail post 24 and the second terminal end 40 of the second guardrail post 26 are rotated toward the scaffolding assembly 111.
  • the end guardrail 10 is pivoted until a first wedge 63 aligns with one of the holes 132 of the second scaffold rosette 118B and a second wedge 69 aligns with one of the holes 132 of the fourth scaffold rosette 118D.
  • the first wedge 63 is then inserted through the first ledger head 62 and the second scaffold rosette 118B.
  • the second wedge 69 is inserted through the second ledger head 66 and the fourth scaffold rosette 118D to couple the end guardrail 10 with the scaffold assembly 111.
  • the wedges 63, 69 may be removed and the steps reversed to uninstall the end guardrail 10.
  • a scaffolding system comprising: a scaffolding assembly configured to support a worker above ground adjacent a structure, the scaffolding assembly includes a first vertical scaffold post, a second vertical scaffold post spaced apart from the first vertical scaffold post, a ledger extending between and interconnected to the first vertical scaffold post and the second vertical scaffold post, and a work platform supported on the ledger, the first vertical scaffold post having a first upright member, a first rosette, and a second rosette spaced apart vertically from the first rosette, and the second vertical scaffold post having a second upright member, a third rosette, and a fourth rosette spaced apart vertically from the third rosette.
  • the end guardrail includes a rail assembly including a first vertical guardrail post, a second vertical guardrail post, and a first rail extending horizontally between and interconnecting the first vertical guardrail post and the second vertical guardrail post and adapted to block the worker from passing through the space, the first vertical guardrail post and the second vertical guardrail post being spaced apart to define an empty space between the first vertical guardrail post and the second vertical guardrail post,
  • the locating pin arms include a first locating pin arm fixed with the first vertical guardrail post and a second locating pin arm fixed with the second vertical guardrail post, the first locating pin arm having a first extension member that extends away from the first vertical guardrail post and a first locating pin that extends into the first rosette of the first vertical scaffold post, and the second locating pin arm having a second extension member that extends away from the second vertical guardrail post and a second locating pin that extends into the third rosette of the second vertical scaffold post.
  • the end guardrail further includes ledger head connectors configured to couple the end guardrail to the scaffolding assembly, the ledger head connectors including a first ledger head connector fixed with the first vertical guardrail post and a second ledger head connector fixed with the second vertical guardrail post, the first ledger head connector having a first support member that extends away from a first lower terminal end of the first vertical guardrail post and a first ledger head fixed with the first support member and removably coupled with the second rosette of the first vertical scaffold post, and the second ledger head connector having a second support member that extends away from a second lower terminal end of the second vertical guardrail post and a second ledger head coupled with the second support member and removably coupled with the fourth rosette of the second vertical scaffold post.
  • the ledger head connectors including a first ledger head connector fixed with the first vertical guardrail post and a second ledger head connector fixed with the second vertical guardrail post, the first ledger head connector having a first support member that extends away from a first lower terminal end of the
  • first support member of the first ledger head connector includes a bracket and a support body, the bracket having a horizontal segment coupled with the first vertical guardrail post and a vertical segment coupled with the first ledger head, and the support body extends between and interconnects the horizontal segment and the vertical segment.
  • bracket further includes a joining segment that extends between and interconnects the horizontal segment and the vertical segment and the support body is a flat plate.
  • the rail assembly further includes a second rail that extends between and interconnects the first vertical guardrail post and the second vertical guardrail post, the second rail is vertically aligned with the first extension member and the second extension member, and the second rail is located vertically between the first rail and the ledger head connectors.
  • Clause 14 The scaffolding system of clause 12, any other suitable clause, or combination of clauses, wherein the second angle is between about 15 degrees and about 60 degrees.
  • Clause 16 The scaffolding system of clause 11, any other suitable clause, or combination of clauses, wherein the first angle is between about 10 degrees and about 50 degrees.
  • An end guardrail adapted for use with a scaffolding system comprising: a rail assembly including a first vertical guardrail post, a second vertical guardrail post spaced apart from the first vertical guardrail post to define an open space therebetween, and a first rail extending horizontally between and interconnecting the first vertical guardrail post and the second vertical guardrail post.
  • Clause 20 The end guardrail of clause 19, any other suitable clause, or combination of clauses, further comprising: locating pin arms including a first locating pin arm fixed with the first vertical guardrail post and a second locating pin arm fixed with the second vertical guardrail post, the first locating pin arm having a first extension member that extends away from the first vertical guardrail post and a first locating pin that downwardly from the first extension member, and the second locating pin arm having a second extension member that extends away from the second vertical guardrail post and a second locating pin that extends downwardly away from the second extension member.
  • ledger head connectors including a first ledger head connector fixed with the first vertical guardrail post and a second ledger head connector fixed with the second vertical guardrail post, the first ledger head connector having a first support member that extends downwardly and transversely away from a first terminal end of the first vertical guardrail post, a first ledger head fixed with the first support member, and a first wedge configured to extend into the first ledger head, and the second ledger head connector having a second support member that extends downwardly and transversely away from a second terminal end of the second vertical guardrail post, a second ledger head coupled with the second support member, and a second wedge configured to extend into the second ledger head.
  • Clause 22 The end guardrail of clause 21, any other suitable clause, or combination of clauses, wherein the first support member of the first ledger head connector includes a bracket and a support body, the bracket includes a horizontal segment coupled with the first terminal end of the first vertical guardrail post and a vertical segment coupled with the first ledger head, and the support body extends between and interconnects the horizontal segment and the vertical segment.
  • bracket further includes a joining segment that extends between and interconnects the horizontal segment and the vertical segment.
  • Clause 26 The end guardrail of clause 25, any other suitable clause, or combination of clauses, wherein the second rail, a portion of the first vertical guardrail post that extends from the second rail to the first terminal end, and a portion of the second vertical guardrail post that extends from the second rail to the second terminal end cooperate to define a U-shaped opening that opens downwardly to allow free access into the U-shaped opening.
  • Clause 27 The end guardrail of clause 21, any other suitable clause, or combination of clauses, wherein the first extension member of the first locating pin arm extends horizontally away from the first vertical guardrail post at a first angle relative to the first rail and the first locating pin extends generally vertically downwardly.
  • Clause 28 The end guardrail of clause 27, any other suitable clause, or combination of clauses, wherein the first support member of the first ledger head connector extends downwardly and distally away from the first vertical guardrail post at a second angle relative to the first rail.
  • Clause 29 The end guardrail of clause 28, any other suitable clause, or combination of clauses, wherein the first angle is different than the second angle.
  • Clause 30 The end guardrail of clause 28, any other suitable clause, or combination of clauses, wherein the second angle is between about 15 degrees and about 60 degrees.
  • Clause 32 The end guardrail of clause 27, any other suitable clause, or combination of clauses, wherein the first angle is between about 10 degrees and about 50 degrees.
  • a method of assembling a scaffolding system comprising: providing a scaffolding assembly includes a first vertical scaffold post and a second vertical scaffold post spaced apart from the first vertical scaffold post, the first vertical scaffold post having a first upright member, a first rosette, and a second rosette spaced apart vertically from the first rosette, and the second vertical scaffold post having a second upright member, a third rosette, and a fourth rosette spaced apart vertically from the third rosette.
  • Clause 36 The method of clause 35, any other suitable clause, or combination of clauses, further comprising: providing an end guardrail having a rail assembly, locating pin arms, and ledger head arms, the rail assembly including a first vertical guardrail post, a second vertical guardrail post, and a first rail extending horizontally between and interconnecting the first vertical guardrail post and the second vertical guardrail post.
  • Clause 39 The method of clause 38, any other suitable clause, or combination of clauses, wherein the first ledger head connector has a first support member that extends away from a first terminal lower end of the first vertical guardrail post and a first ledger head fixed with the first support member, and the second ledger head connector having a second support member that extends away from a terminal lower end of the second vertical guardrail post and a second ledger head coupled with the second support member.
  • Clause 40 The method of clause 39, any other suitable clause, or combination of clauses, further comprising: moving the end guardrail relative to the scaffolding assembly so that the first locating pin arm is aligned vertically with the first scaffold rosette and the second locating pin arm is aligned vertically with the third scaffold rosette.
  • Clause 41 The method of clause 40, any other suitable clause, or combination of clauses, further comprising: lowering the end guardrail so that a portion of the first locating pin arm is received in the first scaffold rosette and a portion of the second locating pin arm is received in the third scaffold rosette.
  • Clause 42 The method of clause 41, any other suitable clause, or combination of clauses, further comprising: pivoting the first terminal end of the first guardrail post and the second terminal end of the second guardrail post toward the scaffolding assembly.
  • Clause 43 The method of clause 42, any other suitable clause, or combination of clauses, further comprising: inserting a first wedge through the first ledger head and the second scaffold rosette and inserting a second wedge through the second ledger head and the fourth scaffold rosette to couple the end guardrail with the scaffold assembly.
  • Clause 44 The method of clause 43, any other suitable clause, or combination of clauses, wherein the first support member of the first ledger head connector includes a bracket and a flat plate.
  • bracket has a horizontal segment coupled with the first vertical guardrail post, a vertical segment coupled with the first ledger head, and an joining segment that extends between and interconnects the horizontal segment and the vertical segment.
  • the rail assembly further includes a second rail that extends between and interconnects the first vertical guardrail post and the second vertical guardrail post, the second rail is vertically aligned with the first extension member and the second extension member, and the second rail is located vertically between the first rail and the ledger head arms.
  • Clause 48 The method of clause 47, any other suitable clause, or combination of clauses, wherein the second rail, the first vertical guardrail post from the second rail to the first terminal end, and the second vertical guardrail post from the second rail to the second terminal end cooperate to define a U-shaped opening that opens downwardly to allow free access into the U-shaped opening.

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Abstract

A scaffolding system includes a scaffolding assembly configured to support a worker above ground adjacent a structure and an end guardrail for integration with the scaffolding assembly. The scaffolding assembly includes a first vertical scaffold post and a second vertical scaffold post spaced apart from the first vertical scaffold post. The end guardrail is coupled with the first and second vertical scaffold posts and configured to block the user from passing through a space between the first vertical post and the second vertical post.

Description

END INTEGRATED ADVANCE GUARDRAIL FOR SCAFFOLDING SYSTEMS
FIELD OF THE DISCLOSURE
The present disclosure relates generally to scaffolding systems, and more specifically to a guardrails adapted to be erected in advance of walking platforms for workers on the scaffolding system.
BACKGROUND
Modular scaffold support systems are commonly used to provide vertical support for structures as well as for use in defining a raised work platform adjacent a structure. Scaffold systems are also used for providing temporary structures such as work platforms or removable bleacher-type seating.
One of the most common scaffolding system is modular and is designed to allow convenient connection of horizontal members to tubular steel upright members. The tubular steel upright members have a series of connecting members positioned in the length of the vertical upright and the horizontal members include at the ends thereof a component designed to connect with any of a series of connecting nodes provided on vertical upright scaffold members. This type of modular connection of scaffold components is convenient and requires less expertise in the assembly of support structures or raised platforms.
SUMMARY
The present disclosure may comprise one or more of the following features and combinations thereof.
A scaffolding system includes a scaffolding assembly configured to support a worker above ground adjacent a structure and an end guardrail for integration with the scaffolding assembly. The scaffolding assembly includes a plurality of vertical scaffold posts, a plurality of ledgers that extend between the scaffold posts, and horizontal work platforms supported by the ledges so that workers to walk on the scaffolding assembly. The plurality of vertical scaffold posts includes a first vertical scaffold post and a second vertical scaffold post spaced apart from the first vertical scaffold post. The end guardrail is coupled with the first and second vertical scaffold posts to block the user from passing through a space between the first vertical post and the second vertical post.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is a perspective view of a mobile scaffold system having a scaffold assembly and end guardrail in accordance with the present disclosure;
Fig. 2 is a perspective view of the end guardrail of Fig. 1;
Fig. 3 is a front elevation view of the end guardrail of Fig. 2;
Fig. 4 is a side elevation view of the end guardrail of Fig. 2;
Fig. 5 is a top view of the end guardrail of Fig. 2;
Fig. 6 is a top view of one of the locating pin arms including in the end guardrail of Fig. 2;
Fig. 7 is a side elevation view of one of the ledger head connectors included in the end guardrail of Fig. 2;
Fig. 8 is a top view of the ledger head connector of Fig. 7;
Fig. 9 is a perspective view of the scaffold system showing one of the locating pin arms of the end guardrail received in a rosette of a vertical scaffold post of the scaffold assembly and one of the ledger head connectors coupled with another rosette of the vertical scaffold post;
Fig. 10 is a detail perspective view of the scaffold system of Fig. 1 showing one of the locating pin arms of the end guardrail received in the first rosette of the vertical scaffold post; and
Fig. 11 is a detail perspective view of the scaffold system showing one of the ledger head connectors coupled with the second rosette of the vertical scaffold post.
DETAILED DESCRIPTION
For the purposes of promoting an understanding of the principles of the disclosure, reference will now be made to a number of illustrative embodiments illustrated in the drawings and specific language will be used to describe the same.
According to regulations in many regions and countries around the world, a temporary or permanent guardrail for a scaffolding system is to be install before the scaffold erection workers can erect or stand on a working platform (floor) on the scaffolding system. The present disclosure provides an advance installation, integrated end guardrail 10 that is configured to be installed in advance of (before) workers climb to the next higher level on a scaffolding system 110 as the scaffolding system 110 is being erected as suggested in Fig. 1.
The scaffolding system 110 includes a scaffold assembly 111 and the end guardrail 10. The scaffolding assembly 111 is a mobile assembly in the illustrative embodiment and, in other embodiments, may be secured to ground or other structure. The scaffolding assembly 111 includes a plurality of scaffold posts 112, ledgers 114 that extend between the scaffold posts 112, and horizontal work platforms 116 for workers to walk upon. Each scaffold  post 112 has one or more scaffolding rosettes 118 fixed thereon for coupling the ledgers 114 and end guardrail 10, etc. with the scaffold posts 112.
The workers may climb through a hatch way 122 or gap in the upper platform on the scaffolding assembly 111. As they climb upward, they may attach their fall arrest equipment to the end guardrail 10 or other guardrail ledgers. In this manner, the workers may be attached to the end guardrail 10 at all or substantially all times while the scaffolding system 110 is being built to help prevent the workers from falling from a height.
The end guardrail 10 is configured to interlock with a first vertical scaffold post 112A and a second vertical scaffold post 112B of the scaffolding assembly 111 as shown in Figs. 1 and 9-11. The second vertical scaffold post 112B is spaced apart from the first vertical scaffold post 112A. The scaffolding assembly 111 may further include ledgers 114 extending between and interconnecting the first vertical scaffold post 112A and the second vertical scaffold post 112B, and work platforms 116 supported on the ledgers 114. The first vertical scaffold post 112A has a first upright member 113A, a first rosette 118A, and a second rosette 118B spaced apart vertically from the first rosette 118A. The second vertical scaffold post 112B has a second upright member 113B, a third rosette 118C, and a fourth rosette 118D spaced apart vertically from the third rosette 118C.
Each rosette 118 includes a plurality of holes formed therein as shown in Figs. 10 and 11. The rosettes 118 each include a set of holes 130 and a set of holes 132. Each hole 132 included in the set of holes 132 are elongated circumferentially relative to the holes 130 such that the each hole 132 of the set of holes 132 have a different shape compared to each hole 130 in the set of holes 130 as shown in Figs. 10 and 11. Each hole 130 of the set of holes 130 has an ovular shape. The holes alternate circumferentially around the rosette 118 such that the pattern goes hole 130, hole 132, hole 130, hole 132, etc. as shown in Figs. 10 and 11.
The end guardrail 10 is configured to block the worker or user from passing through a space between the first vertical scaffold post 112A and the second vertical post 112B as suggested in Fig. 1. The end guardrail 10 includes a rail assembly 12, locating  pin arms  14, 16, and  ledger head connectors  18, 20 as shown in Figs. 1-11. The rail assembly 12 is configured to provide railing for the workers. The locating  pin arms  14, 16 are configured to locate the end guardrail 10 on the  scaffold posts  112A, 112B during assembly and to interlock with the  scaffold posts  112A, 112B. The  ledger head connectors  18, 20 removably secure the end guardrail 10 to the  scaffold posts  112A, 112B via an interlocked connection.
The  ledger head connectors  18, 20 are spaced apart vertically from locating  pin arms  14, 16 as shown in Figs. 1-4 and 9. Each of the locating  pin arms  14, 16 locate the end guardrail 10 at a corresponding pivot point on the  scaffold posts  112A, 112B. The locating  pin  arms  14, 16 interlock the end guardrail 10 with the  scaffold posts  112A, 112B at the pivot points on the  scaffold posts  112A, 112B. Each of the  ledger head connectors  18, 20 secure the end guardrail 10 to each of the  scaffold posts  112A, 112B at a second point location on the  scaffold posts  112A, 112B. The second point locations are spaced apart vertically from the pivot points along the  scaffold posts  112A, 112B. In the illustrative embodiment, the rosettes 118 define the pivot points/point locations.
The rail assembly 12 includes a first vertical guardrail post 24, a second vertical guardrail post 26, and a first rail 28 (top rail) that extends horizontally between and interconnecting the first vertical guardrail post 24 and the second vertical guardrail post 26 as shown in Figs. 1-3. The rail assembly 12 further may include a second rail 30 (mid rail) and includes such second rail 30 in the illustrative embodiment.
The first rail 28 is adapted to block the user or worker from passing through the space between the  scaffold posts  112A, 112B. In the illustrative embodiment, the first rail 28 and the second rail 30 both block the user or worker from passing through the space between the  scaffold posts  112A, 112B. The first vertical guardrail post 24 and the second vertical guardrail post 26 are spaced apart to define an empty space or opening 32 between the first vertical guardrail post 24 and the second vertical guardrail post 26.
The first vertical guardrail post 24 includes an upper end 34 and a lower terminating end 36 spaced apart vertically from the upper end 34 as shown in Figs. 2 and 3. The second vertical guardrail post 26 includes an upper end 38 and a lower terminating end 40 spaced apart vertically from the upper end 38. The first rail 28 extends between and interconnects the upper ends 34, 38 of the first vertical guardrail post 24 and the second vertical guardrail post 26. In the illustrative embodiment, the upper ends 34, 38 are curved toward each other. In the illustrative embodiment, the first vertical guardrail post 24, the second vertical guardrail post 26, and the first rail 28 are integrally formed from a single tube.
The second rail 30 extends horizontally between and interconnects the first vertical guardrail post 24 and the second vertical guardrail post 26 as shown in Figs. 2 and 3. The second rail 30 is spaced apart from the first rail 28 such that the second rail 30 is located vertically between the first rail 28 and the  ledger head connectors  18, 20. The second rail 30 is aligned with or parallel to the first rail 28. The locating  pin arms  14, 16 are spaced apart from the first rail 28 such that the locating  pin arms  14, 16 are vertically aligned with the second rail 30.
The second rail 30 is welded to the guardrail posts 24, 26. The second rail 30, a portion of the first vertical guardrail post 24 from the second rail 30 to the first terminal end 36, and a portion of the second vertical guardrail post 26 from the second rail 30 to the second terminal end 40 cooperate to define a U-shaped opening 32 that opens downwardly to allow free  access into the U-shaped opening 32. The first rail 28, the second rail 30, an upper portion of the first guardrail post 24 extending between the first rail 28 and the second rail 30, and an upper portion of the second guardrail post 26 extending between the first rail 28 and the second rail 30 cooperate to define a generally rectangular opening that is free of any structure.
The locating  pin arms  14, 16 are configured to locate the end guardrail 10 on the scaffolding assembly 111 during assembly of the scaffolding system 110 as suggested in Figs. 1, 9, and 10. The locating  pin arms  14, 16 include a first locating pin arm 14 and a second locating pin arm 16. The first locating pin arm 14 is fixed with the first vertical guardrail post 24. The second locating pin arm 16 is fixed with the second vertical guardrail post 26. Illustratively, the locating  pin arms  14, 16 are welded with the guardrail posts 24, 26.
The first locating pin arm 14 includes a first extension member 46 and a first locating pin 48 as shown in Figs. 2, 6, and 10. The first extension member 46 extends away from the first vertical guardrail post 24. The first locating pin 48 extends into the first rosette 118A of the first vertical scaffold post 112A. The second locating pin arm 16 includes a second extension member 50 and a second locating pin 52. The second extension member 50 extends away from the second vertical guardrail post 26. The second locating pin 52 extends into the third rosette 118C of the second vertical scaffold post 112B. The second rail 30 is vertically aligned with the first extension member 46 and the second extension member 50 in the illustrative embodiment. The first extension member 46 and the second extension member 50 are tubes with crimped or deformed ends coupled with the first locating pin 48 and the second locating pin 52, respectively as suggested in Fig. 6.
The second locating pin arm 16 is substantially the same as the first locating pin arm 14 and features described for the first locating pin arm 14 are applicable to the second locating pin arm 16. The first extension member 46 of the first locating pin arm 14 extends horizontally away from the first vertical guardrail post 24 as shown in Figs. 6 and 10. The first locating pin 48 and the second locating pin 52 are each circular in cross-section when viewed vertically. The first locating pin 48 extends generally vertically downwardly through a hole 130 formed in the first rosette 118A as shown in Fig. 10.
The first extension member 46 extends toward the first vertical scaffold post 112A at a first angle 56 relative to the first rail 28 (the first rail being aligned with the second rail 30) as suggested in Fig. 6. In some embodiments, the first angle 56 is between about 10 degrees and about 50 degrees. In some embodiments, the first angle 56 is between about 20 degrees and about 40 degrees. In the illustrative embodiment, the first angle 56 is about 30 degrees. The first angle 56 is selected based on a length of the first extension member 46, among other possible  factors, so that the first locating pin 48 is aligned with and received by one of the holes 130 in the rosette 118A as shown in Fig. 10.
The  ledger head connector  18, 20 are configured to couple the end guardrail 10 to the scaffolding assembly 111 as suggested in Figs. 1 and 11. The  ledger head connectors  18, 20 include a first ledger head connector 18 and a second ledger head connector 20. The first ledger head connector 18 is fixed with the first vertical guardrail post 24. The second ledger head connector 20 is fixed with the second vertical guardrail post 26.
The first ledger head connector 18 has a first support member 60, a first ledger head 62, and a first wedge 63. The first support member 60 extends away from a lower first terminal end 36 of the first vertical guardrail post 24. The first ledger head 62 is fixed with the first support member 60 and removably coupled with the second rosette 118B of the first vertical scaffold post 112A. The wedge 63 extends through the first ledger head 62 and the second rosette 118B to couple the end guardrail 10 to the first vertical scaffold post 112A.
The second ledger head connector 20 has a second support member 64, a second ledger head 66, and a second wedge 69. The second support member 64 extends away from the lower terminal end 40 of the second vertical guardrail post 26. The second ledger head 66 is coupled with the second support member 64 and removably coupled with the fourth rosette 118D of the second vertical scaffold post 112B. The second wedge 69 extends through the second ledger head 66 and the fourth rosette 118D to couple the end guardrail 10 to the second vertical scaffold post 112B. The second ledger head connector 20 is substantially the same as the first ledger head connector 18 and features described for the first ledger head connector 18 are applicable to the second ledger head connector 20.
The first support member 60 of the first ledger head connector 18 extends downwardly and distally away from the first vertical guardrail post 24 toward the first vertical scaffold post 112A at a second angle 58 relative to the first rail 28 as shown in Fig. 8. In the illustrative embodiment, the first angle 56 is different than the second angle 58. In some embodiments, the second angle 58 is between about 15 degrees and about 60 degrees. In some embodiments, the second angle 58 is between about 20 degrees and about 55 degrees. Illustratively, the second angle is about 45 degrees. The second angle 58 is selected based on a length of the first support member 60, among other possible factors, so that the first ledger head 62 receives the second rosette 118B and aligns with one of the holes 132 in the second rosette 118B as shown in Fig. 11.
The  ledger head connectors  18, 20 are at a different angle compared to the locating  pin arms  14, 16 so that each of the  ledger head connectors  18, 20 align with a hole 132, while each of the locating  pin arms  14, 16 align with a hole 130 as shown in Figs. 10 and 11. The  holes alternate circumferentially around the rosette 118 such that the pattern goes hole 130, hole 132, hole 130, hole 132, etc. as shown in Figs. 10 and 11. The second angle 58 is different from the first angle 56 so that the  ledger head connectors  18, 20 will align with and extend into the holes 132 instead of the holes 130.
Each of the first and  second support members  60, 64 includes a bracket 65 and a support body 67 as shown in Figs. 7 and 8. The bracket 65 of the first support member 60 has a horizontal segment 68 coupled with the first vertical guardrail post 24 and a vertical segment 70 coupled with the first ledger head 62. The bracket 65 may further include a joining segment 72 that extends between and interconnects the horizontal segment 68 and the vertical segment 70. The illustrative embodiment of the bracket 65 does include such a joining segment 72 that extends at an angle between the horizontal segment 68 and the vertical segment 70.
The support body 67 extends between and interconnects the horizontal segment 68 and the vertical segment 70 as shown in Fig. 7. In the illustrative embodiment, the support body 67 is a flat plate as shown in Fig. 7. The support body 67 is formed to define a cutout that extends into the support body at the end adjacent the horizontal segment 68 of the bracket 65. The support body 67 is spaced apart from the joining segment 72. In the illustrative embodiment, the support body 67 is welded with the bracket 65. The bracket and support body of the second support member 64 are substantially similar to the bracket 65 and support body 67.
In the illustrative embodiment, the rail assembly 12, first extension member 46, and the second extension member 50 are all formed of metallic tubes that are welded together. The brackets 65 and flat plate 67 are made of flat metal stock. The first ledger head 62 and the second ledger head 66 are conventional ring lock style ledger heads that include an upper body and a lower body that are formed with a horizontal slot therebetween for receiving the rosettes 118.
The support body 67 of the first support members 60 extends at an angle 74 relative to the first vertical guard post 24 as shown in Fig. 7. In some embodiments, the angle 74 is between about 10 degrees and about 40 degrees. In some embodiments, the angle 74 is between about 20 degrees and about 30 degrees. In the illustrative embodiment, the angle 74 is about 30 degrees. The angle 74 is selected based on a position of the rosette 118B relative to the other rosette 118A, among other possible factors, so that the first wedge 63 is aligned with and received by one of the holes 132 in the rosette 118B as shown in Fig. 10.
A method of assembling the scaffolding system 110 includes providing the scaffolding assembly 111 and the end guardrail 10. The method includes moving the end guardrail 10 relative to the scaffolding assembly 111 so that the first locating pin arm 14 is aligned vertically with the first scaffold rosette 118A and the second locating pin arm 16 is  aligned vertically with the third scaffold rosette 118C. The method includes lowering the end guardrail 10 so that a portion, first locating pin 48, of the first locating pin arm 14 is received in the first scaffold rosette 118A and a portion, second locating pin 52, of the second locating pin arm 16 is received in the third scaffold rosette 118C.
The end guardrail 10 is then pivoted about the pivot points at the first scaffold rosette 118A and the third scaffold rosette 118C so that the first terminal end 36 of the first guardrail post 24 and the second terminal end 40 of the second guardrail post 26 are rotated toward the scaffolding assembly 111. The end guardrail 10 is pivoted until a first wedge 63 aligns with one of the holes 132 of the second scaffold rosette 118B and a second wedge 69 aligns with one of the holes 132 of the fourth scaffold rosette 118D.
The first wedge 63 is then inserted through the first ledger head 62 and the second scaffold rosette 118B. The second wedge 69 is inserted through the second ledger head 66 and the fourth scaffold rosette 118D to couple the end guardrail 10 with the scaffold assembly 111. The  wedges  63, 69 may be removed and the steps reversed to uninstall the end guardrail 10.
The following numbered clauses include embodiments that are contemplated and non-limiting:
Clause 1. A scaffolding system comprising: a scaffolding assembly configured to support a worker above ground adjacent a structure, the scaffolding assembly includes a first vertical scaffold post, a second vertical scaffold post spaced apart from the first vertical scaffold post, a ledger extending between and interconnected to the first vertical scaffold post and the second vertical scaffold post, and a work platform supported on the ledger, the first vertical scaffold post having a first upright member, a first rosette, and a second rosette spaced apart vertically from the first rosette, and the second vertical scaffold post having a second upright member, a third rosette, and a fourth rosette spaced apart vertically from the third rosette.
Clause 2. The scaffolding system of clause 1, any other suitable clause, or combination of clauses, further comprising: an end guardrail configured to block the worker from passing through a space between the first vertical scaffold post and the second vertical scaffold post.
Clause 3. The scaffolding system of clause 2, any other suitable clause, or combination of clauses, wherein the end guardrail includes a rail assembly including a first vertical guardrail post, a second vertical guardrail post, and a first rail extending horizontally between and interconnecting the first vertical guardrail post and the second vertical guardrail post and adapted to block the worker from passing through the space, the first vertical guardrail post and the second vertical guardrail post being spaced apart to define an empty space between the first vertical guardrail post and the second vertical guardrail post,
Clause 4. The scaffolding system of clause 3, any other suitable clause, or combination of clauses, wherein the end guardrail further includes locating pin arms configured to locate the end guardrail on the scaffolding assembly during assembly of the scaffolding system.
Clause 5. The scaffolding system of clause 4, any other suitable clause, or combination of clauses, wherein the locating pin arms include a first locating pin arm fixed with the first vertical guardrail post and a second locating pin arm fixed with the second vertical guardrail post, the first locating pin arm having a first extension member that extends away from the first vertical guardrail post and a first locating pin that extends into the first rosette of the first vertical scaffold post, and the second locating pin arm having a second extension member that extends away from the second vertical guardrail post and a second locating pin that extends into the third rosette of the second vertical scaffold post.
Clause 6. The scaffolding system of clause 5, any other suitable clause, or combination of clauses, wherein the end guardrail further includes ledger head connectors configured to couple the end guardrail to the scaffolding assembly, the ledger head connectors including a first ledger head connector fixed with the first vertical guardrail post and a second ledger head connector fixed with the second vertical guardrail post, the first ledger head connector having a first support member that extends away from a first lower terminal end of the first vertical guardrail post and a first ledger head fixed with the first support member and removably coupled with the second rosette of the first vertical scaffold post, and the second ledger head connector having a second support member that extends away from a second lower terminal end of the second vertical guardrail post and a second ledger head coupled with the second support member and removably coupled with the fourth rosette of the second vertical scaffold post.
Clause 7. The scaffolding system of clause 6, any other suitable clause, or combination of clauses, wherein the first support member of the first ledger head connector includes a bracket and a support body, the bracket having a horizontal segment coupled with the first vertical guardrail post and a vertical segment coupled with the first ledger head, and the support body extends between and interconnects the horizontal segment and the vertical segment.
Clause 8. The scaffolding system of clause 7, any other suitable clause, or combination of clauses, wherein the bracket further includes a joining segment that extends between and interconnects the horizontal segment and the vertical segment and the support body is a flat plate.
Clause 9. The scaffolding system of clause 8, any other suitable clause, or combination of clauses, wherein the rail assembly further includes a second rail that extends between and interconnects the first vertical guardrail post and the second vertical guardrail post, the second rail is vertically aligned with the first extension member and the second extension member, and the second rail is located vertically between the first rail and the ledger head connectors.
Clause 10. The scaffolding system of clause 9, any other suitable clause, or combination of clauses, wherein the second rail, the first vertical guardrail post from the second rail to the first lower terminal end, and the second vertical guardrail post from the second rail to the second lower terminal end cooperate to define a U-shaped opening that opens downwardly to allow free access into the U-shaped opening.
Clause 11. The scaffolding system of clause 6, any other suitable clause, or combination of clauses, wherein the first extension member of the first locating pin arm extends horizontally away from the first vertical guardrail post toward the first vertical scaffold post at a first angle relative to the first rail and the first locating pin extends generally vertically downwardly through a hole formed in the first rosette.
Clause 12. The scaffolding system of clause 11, any other suitable clause, or combination of clauses, wherein the first support member of the first ledger head connector extends downwardly and distally away from the first vertical guardrail post toward the first vertical scaffold post at a second angle relative to the first rail and the first ledger head connector further includes a first wedge that extends into the first ledger head and the second rosette to couple the first ledger head connector with the first vertical scaffold post.
Clause 13. The scaffolding system of clause 12, any other suitable clause, or combination of clauses, wherein the first angle is different than the second angle.
Clause 14. The scaffolding system of clause 12, any other suitable clause, or combination of clauses, wherein the second angle is between about 15 degrees and about 60 degrees.
Clause 15. The scaffolding system of clause 12, any other suitable clause, or combination of clauses, wherein the second angle is about 45 degrees.
Clause 16. The scaffolding system of clause 11, any other suitable clause, or combination of clauses, wherein the first angle is between about 10 degrees and about 50 degrees.
Clause 17. The scaffolding system of clause 11, any other suitable clause, or combination of clauses, wherein the first angle is about 30 degrees.
Clause 18. The scaffolding system of clause 7, any other suitable clause, or combination of clauses, wherein the first locating pin and the second locating pin are each circular in cross-section when viewed vertically.
Clause 19. An end guardrail adapted for use with a scaffolding system, the end guardrail comprising: a rail assembly including a first vertical guardrail post, a second vertical guardrail post spaced apart from the first vertical guardrail post to define an open space therebetween, and a first rail extending horizontally between and interconnecting the first vertical guardrail post and the second vertical guardrail post.
Clause 20. The end guardrail of clause 19, any other suitable clause, or combination of clauses, further comprising: locating pin arms including a first locating pin arm fixed with the first vertical guardrail post and a second locating pin arm fixed with the second vertical guardrail post, the first locating pin arm having a first extension member that extends away from the first vertical guardrail post and a first locating pin that downwardly from the first extension member, and the second locating pin arm having a second extension member that extends away from the second vertical guardrail post and a second locating pin that extends downwardly away from the second extension member.
Clause 21. The end guardrail of clause 20, any other suitable clause, or combination of clauses, further comprising: ledger head connectors including a first ledger head connector fixed with the first vertical guardrail post and a second ledger head connector fixed with the second vertical guardrail post, the first ledger head connector having a first support member that extends downwardly and transversely away from a first terminal end of the first vertical guardrail post, a first ledger head fixed with the first support member, and a first wedge configured to extend into the first ledger head, and the second ledger head connector having a second support member that extends downwardly and transversely away from a second terminal end of the second vertical guardrail post, a second ledger head coupled with the second support member, and a second wedge configured to extend into the second ledger head.
Clause 22. The end guardrail of clause 21, any other suitable clause, or combination of clauses, wherein the first support member of the first ledger head connector includes a bracket and a support body, the bracket includes a horizontal segment coupled with the first terminal end of the first vertical guardrail post and a vertical segment coupled with the first ledger head, and the support body extends between and interconnects the horizontal segment and the vertical segment.
Clause 23. The end guardrail of clause 22, any other suitable clause, or combination of clauses, wherein the bracket further includes a joining segment that extends between and interconnects the horizontal segment and the vertical segment.
Clause 24. The end guardrail of clause 23, any other suitable clause, or combination of clauses, wherein the support body is a flat plate.
Clause 25. The end guardrail of clause 22, any other suitable clause, or combination of clauses, wherein the rail assembly further includes a second rail that extends between and interconnects the first vertical guardrail post and the second vertical guardrail post, the second rail is vertically aligned with the first extension member and the second extension member, and the second rail is located vertically between the first rail and the ledger head connectors.
Clause 26. The end guardrail of clause 25, any other suitable clause, or combination of clauses, wherein the second rail, a portion of the first vertical guardrail post that extends from the second rail to the first terminal end, and a portion of the second vertical guardrail post that extends from the second rail to the second terminal end cooperate to define a U-shaped opening that opens downwardly to allow free access into the U-shaped opening.
Clause 27. The end guardrail of clause 21, any other suitable clause, or combination of clauses, wherein the first extension member of the first locating pin arm extends horizontally away from the first vertical guardrail post at a first angle relative to the first rail and the first locating pin extends generally vertically downwardly.
Clause 28. The end guardrail of clause 27, any other suitable clause, or combination of clauses, wherein the first support member of the first ledger head connector extends downwardly and distally away from the first vertical guardrail post at a second angle relative to the first rail.
Clause 29. The end guardrail of clause 28, any other suitable clause, or combination of clauses, wherein the first angle is different than the second angle.
Clause 30. The end guardrail of clause 28, any other suitable clause, or combination of clauses, wherein the second angle is between about 15 degrees and about 60 degrees.
Clause 31. The end guardrail of clause 28, any other suitable clause, or combination of clauses, wherein the second angle is about 45 degrees.
Clause 32. The end guardrail of clause 27, any other suitable clause, or combination of clauses, wherein the first angle is between about 10 degrees and about 50 degrees.
Clause 33. The end guardrail of clause 27, any other suitable clause, or combination of clauses, wherein the first angle is about 30 degrees.
Clause 34. The end guardrail of clause 21, any other suitable clause, or combination of clauses, wherein the first locating pin and the second locating pin are each circular in cross-section when viewed vertically.
Clause 35. A method of assembling a scaffolding system, the method comprising: providing a scaffolding assembly includes a first vertical scaffold post and a second vertical scaffold post spaced apart from the first vertical scaffold post, the first vertical scaffold post having a first upright member, a first rosette, and a second rosette spaced apart vertically from the first rosette, and the second vertical scaffold post having a second upright member, a third rosette, and a fourth rosette spaced apart vertically from the third rosette.
Clause 36. The method of clause 35, any other suitable clause, or combination of clauses, further comprising: providing an end guardrail having a rail assembly, locating pin arms, and ledger head arms, the rail assembly including a first vertical guardrail post, a second vertical guardrail post, and a first rail extending horizontally between and interconnecting the first vertical guardrail post and the second vertical guardrail post.
Clause 37. The method of clause 36, any other suitable clause, or combination of clauses, wherein the locating pin arms include a first locating pin arm fixed with the first vertical guardrail post and a second locating pin arm fixed with the second vertical guardrail post.
Clause 38. The method of clause 37, any other suitable clause, or combination of clauses, wherein the ledger head connectors include a first ledger head connector fixed with the first vertical guardrail post and a second ledger head connector fixed with the second vertical guardrail post.
Clause 39. The method of clause 38, any other suitable clause, or combination of clauses, wherein the first ledger head connector has a first support member that extends away from a first terminal lower end of the first vertical guardrail post and a first ledger head fixed with the first support member, and the second ledger head connector having a second support member that extends away from a terminal lower end of the second vertical guardrail post and a second ledger head coupled with the second support member.
Clause 40. The method of clause 39, any other suitable clause, or combination of clauses, further comprising: moving the end guardrail relative to the scaffolding assembly so that the first locating pin arm is aligned vertically with the first scaffold rosette and the second locating pin arm is aligned vertically with the third scaffold rosette.
Clause 41. The method of clause 40, any other suitable clause, or combination of clauses, further comprising: lowering the end guardrail so that a portion of the first locating pin arm is received in the first scaffold rosette and a portion of the second locating pin arm is received in the third scaffold rosette.
Clause 42. The method of clause 41, any other suitable clause, or combination of clauses, further comprising: pivoting the first terminal end of the first guardrail post and the second terminal end of the second guardrail post toward the scaffolding assembly.
Clause 43. The method of clause 42, any other suitable clause, or combination of clauses, further comprising: inserting a first wedge through the first ledger head and the second scaffold rosette and inserting a second wedge through the second ledger head and the fourth scaffold rosette to couple the end guardrail with the scaffold assembly.
Clause 44. The method of clause 43, any other suitable clause, or combination of clauses, wherein the first support member of the first ledger head connector includes a bracket and a flat plate.
Clause 45. The method of clause 44, any other suitable clause, or combination of clauses, wherein the bracket has a horizontal segment coupled with the first vertical guardrail post, a vertical segment coupled with the first ledger head, and an joining segment that extends between and interconnects the horizontal segment and the vertical segment.
Clause 46. The method of clause 45, any other suitable clause, or combination of clauses, wherein the flat plate extends between and interconnects the horizontal segment and the vertical segment.
Clause 47. The method of clause 46, any other suitable clause, or combination of clauses, wherein the rail assembly further includes a second rail that extends between and interconnects the first vertical guardrail post and the second vertical guardrail post, the second rail is vertically aligned with the first extension member and the second extension member, and the second rail is located vertically between the first rail and the ledger head arms.
Clause 48. The method of clause 47, any other suitable clause, or combination of clauses, wherein the second rail, the first vertical guardrail post from the second rail to the first terminal end, and the second vertical guardrail post from the second rail to the second terminal end cooperate to define a U-shaped opening that opens downwardly to allow free access into the U-shaped opening.
While the disclosure has been illustrated and described in detail in the foregoing drawings and description, the same is to be considered as exemplary and not restrictive in character, it being understood that only illustrative embodiments thereof have been shown and described and that all changes and modifications that come within the spirit of the disclosure are desired to be protected.

Claims (31)

  1. A scaffolding system comprising:
    a scaffolding assembly configured to support a worker above ground adjacent a structure, the scaffolding assembly includes a first vertical scaffold post, a second vertical scaffold post spaced apart from the first vertical scaffold post, a ledger extending between and interconnected to the first vertical scaffold post and the second vertical scaffold post, and a work platform supported on the ledger, the first vertical scaffold post having a first upright member, a first rosette, and a second rosette spaced apart vertically from the first rosette, and the second vertical scaffold post having a second upright member, a third rosette, and a fourth rosette spaced apart vertically from the third rosette, and
    an end guardrail configured to block the worker from passing through a space between the first vertical scaffold post and the second vertical scaffold post, the end guardrail including
    a rail assembly including a first vertical guardrail post, a second vertical guardrail post, and a first rail extending horizontally between and interconnecting the first vertical guardrail post and the second vertical guardrail post and adapted to block the worker from passing through the space, the first vertical guardrail post and the second vertical guardrail post being spaced apart to define an empty space between the first vertical guardrail post and the second vertical guardrail post,
    locating pin arms configured to locate the end guardrail on the scaffolding assembly during assembly of the scaffolding system, the locating pin arms including a first locating pin arm fixed with the first vertical guardrail post and a second locating pin arm fixed with the second vertical guardrail post, the first locating pin arm having a first extension member that extends away from the first vertical guardrail post and a first locating pin that extends into the first rosette of the first vertical scaffold post, and the second locating pin arm having a second extension member that extends away from the second vertical guardrail post and a second locating pin that extends into the third rosette of the second vertical scaffold post, and
    ledger head connectors configured to couple the end guardrail to the scaffolding assembly, the ledger head connectors including a first ledger head connector fixed with the first vertical guardrail post and a second ledger head connector fixed with the second vertical guardrail post, the first ledger head connector having a first support member that extends away from a first lower terminal end of the first vertical guardrail  post and a first ledger head fixed with the first support member and removably coupled with the second rosette of the first vertical scaffold post, and the second ledger head connector having a second support member that extends away from a second lower terminal end of the second vertical guardrail post and a second ledger head coupled with the second support member and removably coupled with the fourth rosette of the second vertical scaffold post.
  2. The scaffolding system of claim 1, wherein the first support member of the first ledger head connector includes a bracket and a support body, the bracket having a horizontal segment coupled with the first vertical guardrail post and a vertical segment coupled with the first ledger head, and the support body extends between and interconnects the horizontal segment and the vertical segment.
  3. The scaffolding system of claim 2, wherein the bracket further includes a joining segment that extends between and interconnects the horizontal segment and the vertical segment and the support body is a flat plate.
  4. The scaffolding system of claim 3, wherein the rail assembly further includes a second rail that extends between and interconnects the first vertical guardrail post and the second vertical guardrail post, the second rail is vertically aligned with the first extension member and the second extension member, and the second rail is located vertically between the first rail and the ledger head connectors.
  5. The scaffolding system of claim 4, wherein the second rail, the first vertical guardrail post from the second rail to the first lower terminal end, and the second vertical guardrail post from the second rail to the second lower terminal end cooperate to define a U-shaped opening that opens downwardly to allow free access into the U-shaped opening.
  6. The scaffolding system of claim 1, wherein the first extension member of the first locating pin arm extends horizontally away from the first vertical guardrail post toward the first vertical scaffold post at a first angle relative to the first rail and the first locating pin extends generally vertically downwardly through a hole formed in the first rosette.
  7. The scaffolding system of claim 6, wherein the first support member of the first ledger head connector extends downwardly and distally away from the first vertical guardrail post toward the first vertical scaffold post at a second angle relative to the first rail and the first ledger head connector further includes a first wedge that extends into the first ledger head and the second rosette to couple the first ledger head connector with the first vertical scaffold post.
  8. The scaffolding system of any one of the preceding claims, wherein the first locating pin and the second locating pin are each circular in cross-section when viewed vertically.
  9. The scaffolding system of any one of the preceding claims, wherein the first angle is different than the second angle.
  10. The scaffolding system of any one of the preceding claims, wherein the first angle is between about 10 degrees and about 50 degrees.
  11. The scaffolding system of any one of the preceding claims, wherein the first angle is about 30 degrees.
  12. The scaffolding system of any one of the preceding claims, wherein the second angle is between about 15 degrees and about 60 degrees.
  13. The scaffolding system of any one of the preceding claims, wherein the second angle is about 45 degrees.
  14. An end guardrail adapted for use with a scaffolding system, the end guardrail comprising:
    a rail assembly including a first vertical guardrail post, a second vertical guardrail post spaced apart from the first vertical guardrail post to define an open space therebetween, and a first rail extending horizontally between and interconnecting the first vertical guardrail post and the second vertical guardrail post,
    locating pin arms including a first locating pin arm fixed with the first vertical guardrail post and a second locating pin arm fixed with the second vertical guardrail post, the first locating pin arm having a first extension member that extends away from the first vertical guardrail post and a first locating pin that downwardly from the first extension member, and the second locating pin arm having a second extension member that extends away from the second vertical guardrail post and a second locating pin that extends downwardly away from the second extension member, and
    ledger head connectors including a first ledger head connector fixed with the first vertical guardrail post and a second ledger head connector fixed with the second vertical guardrail post, the first ledger head connector having a first support member that extends downwardly and transversely away from a first terminal end of the first vertical guardrail post, a first ledger head fixed with the first support member, and a first wedge configured to extend into the first ledger head, and the second ledger head connector having a second support member that extends downwardly and transversely away from a second terminal end of the second vertical guardrail post, a second ledger head coupled with the second support member, and a second wedge configured to extend into the second ledger head.
  15. The end guardrail of claim 14, wherein the first support member of the first ledger head connector includes a bracket and a support body, the bracket includes a horizontal segment coupled with the first terminal end of the first vertical guardrail post and a vertical segment coupled with the first ledger head, and the support body extends between and interconnects the horizontal segment and the vertical segment.
  16. The end guardrail of claim 15, wherein the bracket further includes a joining segment that extends between and interconnects the horizontal segment and the vertical segment.
  17. The end guardrail of claim 16, wherein the support body is a flat plate.
  18. The end guardrail of claim 15, wherein the rail assembly further includes a second rail that extends between and interconnects the first vertical guardrail post and the second vertical guardrail post, the second rail is vertically aligned with the first extension member and the second extension member, and the second rail is located vertically between the first rail and the ledger head connectors.
  19. The end guardrail of claim 18, wherein the second rail, a portion of the first vertical guardrail post that extends from the second rail to the first terminal end, and a portion of the second vertical guardrail post that extends from the second rail to the second terminal end cooperate to define a U-shaped opening that opens downwardly to allow free access into the U-shaped opening.
  20. The end guardrail of claim 14, wherein the first extension member of the first locating pin arm extends horizontally away from the first vertical guardrail post at a first angle relative to the first rail and the first locating pin extends generally vertically downwardly.
  21. The end guardrail of claim 20, wherein the first support member of the first ledger head connector extends downwardly and distally away from the first vertical guardrail post at a second angle relative to the first rail.
  22. The end guardrail of any one of the preceding claims, wherein the first locating pin and the second locating pin are each circular in cross-section when viewed vertically.
  23. The end guardrail of any one of the preceding claims, wherein the first angle is different than the second angle.
  24. The end guardrail of any one of the preceding claims, wherein the first angle is between about 10 degrees and about 50 degrees.
  25. The end guardrail of any one of the preceding claims, wherein the first angle is about 30 degrees.
  26. The end guardrail of any one of the preceding claims, wherein the second angle is between about 15 degrees and about 60 degrees.
  27. The end guardrail of any one of the preceding claims, wherein the second angle is about 45 degrees.
  28. A method of assembling a scaffolding system, the method comprising:
    providing a scaffolding assembly includes a first vertical scaffold post and a second vertical scaffold post spaced apart from the first vertical scaffold post, the first vertical scaffold post having a first upright member, a first rosette, and a second rosette spaced apart vertically from the first rosette, and the second vertical scaffold post having a second upright member, a third rosette, and a fourth rosette spaced apart vertically from the third rosette,
    providing an end guardrail having a rail assembly, locating pin arms, and ledger head arms, the rail assembly including a first vertical guardrail post, a second vertical guardrail post, and a first rail extending horizontally between and interconnecting the first vertical guardrail post and the second vertical guardrail post, the locating pin arms including a first locating pin arm fixed with the first vertical guardrail post and a second locating pin arm fixed with the second vertical guardrail post, the ledger head connectors including a first ledger head connector fixed with the first vertical guardrail post and a second ledger head connector fixed with the second vertical guardrail post, the first ledger head connector having a first support member that extends away from a first terminal lower end of the first vertical guardrail post and a first ledger head fixed with the first support member, and the second ledger head connector having a second support member that extends away from a terminal lower end of the second vertical guardrail post and a second ledger head coupled with the second support member,
    moving the end guardrail relative to the scaffolding assembly so that the first locating pin arm is aligned vertically with the first scaffold rosette and the second locating pin arm is aligned vertically with the third scaffold rosette,
    lowering the end guardrail so that a portion of the first locating pin arm is received in the first scaffold rosette and a portion of the second locating pin arm is received in the third scaffold rosette,
    pivoting the first terminal end of the first guardrail post and the second terminal end of the second guardrail post toward the scaffolding assembly, and
    inserting a first wedge through the first ledger head and the second scaffold rosette and inserting a second wedge through the second ledger head and the fourth scaffold rosette to couple the end guardrail with the scaffold assembly.
  29. The method of claim 28, wherein the first support member of the first ledger head connector includes a bracket and a flat plate, the bracket having a horizontal segment  coupled with the first vertical guardrail post, a vertical segment coupled with the first ledger head, and an joining segment that extends between and interconnects the horizontal segment and the vertical segment, and the flat plate extends between and interconnects the horizontal segment and the vertical segment.
  30. The method of claim 29, wherein the rail assembly further includes a second rail that extends between and interconnects the first vertical guardrail post and the second vertical guardrail post, the second rail is vertically aligned with the first extension member and the second extension member, and the second rail is located vertically between the first rail and the ledger head arms.
  31. The method of claim 30, wherein the second rail, the first vertical guardrail post from the second rail to the first terminal end, and the second vertical guardrail post from the second rail to the second terminal end cooperate to define a U-shaped opening that opens downwardly to allow free access into the U-shaped opening.
PCT/CN2022/126691 2022-10-21 2022-10-21 End integrated advance guardrail for scaffolding systems WO2024082268A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19651901A1 (en) * 1995-12-27 1997-07-03 Hussor Erecta Sa Safety balustrade section for framework
JP2006112149A (en) * 2004-10-15 2006-04-27 Alinco Inc Safety balustrade
JP2010019071A (en) * 2008-06-12 2010-01-28 Shinwa Kk Stationary precedent handrail for construction scaffold
FR2944305A1 (en) * 2009-04-10 2010-10-15 Mills Balustrade for e.g. light tower hoist type scaffold, has inverted lower hook placed at lower part of panel, where inverted hook is positioned to be locked by cross-pieces that are fixed to nodes of posts at level of floor
JP2019015125A (en) * 2017-07-10 2019-01-31 有限会社大谷総業 Gable side precedence handrail

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19651901A1 (en) * 1995-12-27 1997-07-03 Hussor Erecta Sa Safety balustrade section for framework
JP2006112149A (en) * 2004-10-15 2006-04-27 Alinco Inc Safety balustrade
JP2010019071A (en) * 2008-06-12 2010-01-28 Shinwa Kk Stationary precedent handrail for construction scaffold
FR2944305A1 (en) * 2009-04-10 2010-10-15 Mills Balustrade for e.g. light tower hoist type scaffold, has inverted lower hook placed at lower part of panel, where inverted hook is positioned to be locked by cross-pieces that are fixed to nodes of posts at level of floor
JP2019015125A (en) * 2017-07-10 2019-01-31 有限会社大谷総業 Gable side precedence handrail

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