EP2567044B1 - Apparatus for forming temporary guardrails on stairs - Google Patents

Apparatus for forming temporary guardrails on stairs Download PDF

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Publication number
EP2567044B1
EP2567044B1 EP11778404.1A EP11778404A EP2567044B1 EP 2567044 B1 EP2567044 B1 EP 2567044B1 EP 11778404 A EP11778404 A EP 11778404A EP 2567044 B1 EP2567044 B1 EP 2567044B1
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EP
European Patent Office
Prior art keywords
stanchion
stringer
bores
flange
registering
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP11778404.1A
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German (de)
French (fr)
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EP2567044A4 (en
EP2567044A1 (en
Inventor
Miguel Osvaldo Gutierrez
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Safety Maker Inc
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Safety Maker Inc
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Publication date
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Publication of EP2567044A1 publication Critical patent/EP2567044A1/en
Publication of EP2567044A4 publication Critical patent/EP2567044A4/en
Application granted granted Critical
Publication of EP2567044B1 publication Critical patent/EP2567044B1/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/32—Safety or protective measures for persons during the construction of buildings
    • E04G21/3204—Safety or protective measures for persons during the construction of buildings against falling down
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
    • E04F11/18—Balustrades; Handrails
    • E04F11/1865—Collapsible or portable balustrades

Definitions

  • the present invention relates to temporary guardrails and, more particularly, to an apparatus for erecting a temporary guardrail on a stair.
  • stairs particularly of the type in apartment buildings and the like, comprise three major components: stringers, treads and risers, although in certain stair constructions; e.g., pan stairs, there are no risers, open space is being formed between the treads.
  • the stringers can be made of a steel channel beam, wood, etc., the dimensions of which can vary depending upon the load to be carried.
  • the treads are the generally horizontal portions of 15 the stair, while the risers are the vertical portions connecting the treads.
  • US2003/012217 discloses a modular railing system which supports a plurality of rails in a vertically-spaced configuration.
  • the railings are supported by vertical stanchions which may be secured to a stair stringer by means of a C-shaped mounting bracket, and two L-shaped bolts which are turned to press against the inner surface of the C-shaped mounting bracket.
  • TW200839072 discloses a temporary hand rail system for attaching to a staircase, in which the hand rail is supported on a plurality of vertical stanchions which are each spaced from but secured to the staircase stringer by a mounting assembly.
  • US5,314,167 discloses a temporary rail structure that includes a series of vertical interconnected by horizontally extending side rails. Each post is designed to clamp around the top portion of a band that extends around a floor joist that supports a subfloor thereabove.
  • CH590385 discloses a hand rail structure for a staircase which includes a plurality of telescopic vertical stanchions which may be adjusted to vary the height/length of the handrail/stanchion.
  • the stanchions are each provided which a plurality of holes through which a pin may be inserted to set the desired length of the stanchion.
  • US3825098 A discloses a handrail system provided with a clamp with a fixed jaw and a removable J-bolt.
  • One object of the present invention is to provide an assembly for erecting a temporary guardrail on a stair.
  • Another object of the present invention is to provide an apparatus for 5 erecting a temporary guardrail on a stair, which can be quickly assembled and disassembled, as needed.
  • a stanchion or other elongate member first and second, spaced jaws connected to the stanchion, which are adapted to rigidly connect the stanchion to the stringer in such a manner that the stringer is substantially perpendicular to the pitch of the stair.
  • the apparatus of the present invention can further comprise, at least one bracket which can receive a temporary handrail.
  • the apparatus of the present invention shown generally as 10, comprises a metal tubular member or stanchion 12, having a front side 14, a first side 16, a second, opposite side (not shown), and a back side 18 ( Fig. 3 ).
  • a first jaw assembly shown generally as 20 Located generally near the lower end of the stanchion 12 is a first jaw assembly shown generally as 20, a second jaw assembly shown generally as 22 being spaced longitudinally from first jaw assembly 20 in a direction toward the upper end of stanchion 12.
  • Bottom jaw assembly 20 comprises an L-shaped head portion having a flange portion 24 and a leg portion 26 attached thereto, a threaded shank 28 extending from leg portion 26 and through registering bores 31 and 30 in the front and back sides 14 and 18, respectively.
  • a wing nut 32 is threadedly received on the portion of shank portion 28 extending out of bore 30, a washer 34 being positioned between wing nut 32 and back surface 18.
  • threaded shank 28 and wing nut 32 comprise a compression assembly for a purpose described hereafter.
  • Second jaw assembly 22 also comprises an L-shaped head portion having a flange portion 36, a leg portion 38, a threaded shank portion 40 extending from leg portion 38 through registering bores 42 and 43 in stanchion 12.
  • a wing nut 44 is threadedly received on the portion of threaded shank 40 extending through back side 18 of stanchion 18.
  • stanchion 12 has a plurality of registering bores 42 and 43, through which threaded shank 40 can extend to allow jaw assembly 22 to be adjustable longitudinally along stanchion 12.
  • a channel shaped spacer 60 effectively a washer, can be used, the spacer 60 overlying the plurality of bores on the back side 18 of stanchion 12.
  • Fig. 5 is a cross-sectional view taken along the lines 5-5 of Fig. 4 and accordingly, shows a portion of a stair assembly.
  • the stair assembly comprises treads 46 and risers 48, which are attached in a suitable fashion to stringers 50, 52 which support the stair.
  • stringers 50, 52 which support the stair.
  • the detailed construction of only one of the stringers of the apparatus of the present invention will be described.
  • a stair with two stringers is shown, it will be apparent that many stairs are constructed against a wall so that only one stringer would have a guardrail.
  • the stairs shown have risers, as noted above, in the case of pan stairs there are no risers.
  • Fig. 5 is a cross-sectional view taken along the lines 5-5 of Fig. 4 and accordingly, shows a portion of a stair assembly.
  • the stair assembly comprises treads 46 and risers 48, which are attached in a suitable fashion to stringers 50, 52 which support the stair.
  • the stringers 50, 52 act as side supports for the stair and are generally at the desired pitch of the stairs.
  • Stringer 50 comprises a channel shaped metal beam, having a main beam portion 52 and spaced, laterally extending flanges 54 and 56. As can be seen in Fig. 5 , flanges 54 and 56 space beam portion 52 from stanchion 12. It will be appreciated that the stringer 50 need not be channel-shaped but could be a square tubular member, a wooden beam, etc., but in any event, would have a surface 58 spaced from stanchion 12.
  • stringer 50 is received between first and second jaw assemblies 20 and 22, such that flange portion 24 abuts the side 58 of stringer beam portion 54 adjacent flange portion 56. Further, when so positioned, it can be seen that by tightening wing nuts 32 and 44, flanges 24 and 36, respectively, will urge stanchion 18 toward stringer 50, stanchion 12 being compressed against the outer edges of flanges 54 and 56 of stringer 50, thereby rigidly securing stanchion 12 to stringer 50.
  • brackets 70 and 72 which are affixed to stanchion 12 by means of bolts 74 and 76, respectively, which extend through registering bores 80, 82 in the front side 14 and back side 18 of stanchion 12.
  • brackets 70 and 72 are shown as tubular, they could be L-shaped in construction or for that matter, any other form, the only proviso being that they be adapted to support a temporary guardrail; e.g., a 2 X 4.
  • 2 X4 temporary rails 84 and 86 are received in brackets 70 and 72, respectively, the rails being secured to the brackets 70 and 72 by fasteners 90 and 92; e.g., a screw, nail or the like, extending through holes 78, 79 of brackets 70, 72, respectively.
  • Threaded wing nuts 75 and 77 are received on bolts 74 and 76, respectively, to secure brackets 70 and 72, respectively, to stanchion 12.
  • jaws 20, 22 and brackets 70 and 72 are rotatable with respect to stanchion 12, such that they can be disposed at any desired angle, if necessary, to accommodate and provide rails which are at any desired angle.
  • the guardrails are at an angle the same as the angle of the pitch line of the stair, as shown in Fig. 4 .
  • brackets 70 and 72 can be longitudinally adjusted along stanchion 12 by virtue of a plurality of registering bores, such as 80 and 82.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Steps, Ramps, And Handrails (AREA)

Description

    FIELD OF THE INVENTION
  • The present invention relates to temporary guardrails and, more particularly, to an apparatus for erecting a temporary guardrail on a stair.
    • BACKGROUND OF THE INVENTION
  • Typically, stairs, particularly of the type in apartment buildings and the like, comprise three major components: stringers, treads and risers, although in certain stair constructions; e.g., pan stairs, there are no risers, open space is being formed between the treads. The stringers can be made of a steel channel beam, wood, etc., the dimensions of which can vary depending upon the load to be carried. As is well known, the treads are the generally horizontal portions of 15 the stair, while the risers are the vertical portions connecting the treads.
  • Because of safety concerns during construction or remodeling, it is generally necessary, before a permanent handrail or guardrail is installed, to erect a temporary guardrail or handrail, and thereby minimize the chance of injuries from a construction worker falling off the stair.
  • US2003/012217 discloses a modular railing system which supports a plurality of rails in a vertically-spaced configuration. The railings are supported by vertical stanchions which may be secured to a stair stringer by means of a C-shaped mounting bracket, and two L-shaped bolts which are turned to press against the inner surface of the C-shaped mounting bracket.
  • TW200839072 discloses a temporary hand rail system for attaching to a staircase, in which the hand rail is supported on a plurality of vertical stanchions which are each spaced from but secured to the staircase stringer by a mounting assembly.
  • US5,314,167 discloses a temporary rail structure that includes a series of vertical interconnected by horizontally extending side rails. Each post is designed to clamp around the top portion of a band that extends around a floor joist that supports a subfloor thereabove.
  • CH590385 discloses a hand rail structure for a staircase which includes a plurality of telescopic vertical stanchions which may be adjusted to vary the height/length of the handrail/stanchion. The stanchions are each provided which a plurality of holes through which a pin may be inserted to set the desired length of the stanchion. US3825098 A discloses a handrail system provided with a clamp with a fixed jaw and a removable J-bolt.
    • SUMMARY OF THE INVENTION
  • The invention is defined by the claims.
  • We provide an apparatus for use in erecting a temporary guard rail on a stair having a stair stringer according to the appended claims.
  • One object of the present invention is to provide an assembly for erecting a temporary guardrail on a stair. Another object of the present invention is to provide an apparatus for 5 erecting a temporary guardrail on a stair, which can be quickly assembled and disassembled, as needed. These objects are achieved by a mounting apparatus according to claim 1.
  • There is provided a stanchion or other elongate member, first and second, spaced jaws connected to the stanchion, which are adapted to rigidly connect the stanchion to the stringer in such a manner that the stringer is substantially perpendicular to the pitch of the stair. The apparatus of the present invention can further comprise, at least one bracket which can receive a temporary handrail.
    • BRIEF DESCRIPTION OF THE DRAWINGS
    • Fig. 1 is an elevational view of the front side of one embodiment of the apparatus of the present invention.
    • Fig. 2 is an elevational, side view of the apparatus shown in Fig. 1.
    • Fig. 3 is an elevational view of the back side of the apparatus of Figs. 1 and 2.
    • Fig. 4 is an isometric, environmental view of a temporary guardrail attached to a stair stringer, using one embodiment of the apparatus of the present invention.
    • Fig. 5 is a cross-sectional view taken along the lines 5-5 of Fig. 4.
    DESCRIPTION OF PREFERRED EMBODIMENTS
  • Referring first to Figs. 1-3, the apparatus of the present invention, shown generally as 10, comprises a metal tubular member or stanchion 12, having a front side 14, a first side 16, a second, opposite side (not shown), and a back side 18 (Fig. 3). Located generally near the lower end of the stanchion 12 is a first jaw assembly shown generally as 20, a second jaw assembly shown generally as 22 being spaced longitudinally from first jaw assembly 20 in a direction toward the upper end of stanchion 12.
  • With reference to Fig. 5, the details of construction of jaw assemblies 20 and 22 are shown. Bottom jaw assembly 20 comprises an L-shaped head portion having a flange portion 24 and a leg portion 26 attached thereto, a threaded shank 28 extending from leg portion 26 and through registering bores 31 and 30 in the front and back sides 14 and 18, respectively. A wing nut 32 is threadedly received on the portion of shank portion 28 extending out of bore 30, a washer 34 being positioned between wing nut 32 and back surface 18. In effect, threaded shank 28 and wing nut 32 comprise a compression assembly for a purpose described hereafter. Second jaw assembly 22 also comprises an L-shaped head portion having a flange portion 36, a leg portion 38, a threaded shank portion 40 extending from leg portion 38 through registering bores 42 and 43 in stanchion 12. A wing nut 44 is threadedly received on the portion of threaded shank 40 extending through back side 18 of stanchion 18. As can be seen, stanchion 12 has a plurality of registering bores 42 and 43, through which threaded shank 40 can extend to allow jaw assembly 22 to be adjustable longitudinally along stanchion 12. To provide strength, a channel shaped spacer 60, effectively a washer, can be used, the spacer 60 overlying the plurality of bores on the back side 18 of stanchion 12.
  • As can be seen, Fig. 5 is a cross-sectional view taken along the lines 5-5 of Fig. 4 and accordingly, shows a portion of a stair assembly. The stair assembly comprises treads 46 and risers 48, which are attached in a suitable fashion to stringers 50, 52 which support the stair. For purposes of the following description, the detailed construction of only one of the stringers of the apparatus of the present invention will be described. Further, although a stair with two stringers is shown, it will be apparent that many stairs are constructed against a wall so that only one stringer would have a guardrail. Furthermore, although the stairs shown have risers, as noted above, in the case of pan stairs there are no risers. As can be seen in Fig. 4, the stringers 50, 52 act as side supports for the stair and are generally at the desired pitch of the stairs. Stringer 50 comprises a channel shaped metal beam, having a main beam portion 52 and spaced, laterally extending flanges 54 and 56. As can be seen in Fig. 5, flanges 54 and 56 space beam portion 52 from stanchion 12. It will be appreciated that the stringer 50 need not be channel-shaped but could be a square tubular member, a wooden beam, etc., but in any event, would have a surface 58 spaced from stanchion 12.
  • As can be seen in Fig. 5, stringer 50 is received between first and second jaw assemblies 20 and 22, such that flange portion 24 abuts the side 58 of stringer beam portion 54 adjacent flange portion 56. Further, when so positioned, it can be seen that by tightening wing nuts 32 and 44, flanges 24 and 36, respectively, will urge stanchion 18 toward stringer 50, stanchion 12 being compressed against the outer edges of flanges 54 and 56 of stringer 50, thereby rigidly securing stanchion 12 to stringer 50.
  • With reference to Figs. 1-4, it can be seen that the apparatus of the present invention is provided with first and second brackets or tubular members 70 and 72, which are affixed to stanchion 12 by means of bolts 74 and 76, respectively, which extend through registering bores 80, 82 in the front side 14 and back side 18 of stanchion 12. Although brackets 70 and 72 are shown as tubular, they could be L-shaped in construction or for that matter, any other form, the only proviso being that they be adapted to support a temporary guardrail; e.g., a 2 X 4. As shown, 2 X4 temporary rails 84 and 86 are received in brackets 70 and 72, respectively, the rails being secured to the brackets 70 and 72 by fasteners 90 and 92; e.g., a screw, nail or the like, extending through holes 78, 79 of brackets 70, 72, respectively. Threaded wing nuts 75 and 77 are received on bolts 74 and 76, respectively, to secure brackets 70 and 72, respectively, to stanchion 12. It will be appreciated from the above description that jaws 20, 22 and brackets 70 and 72 are rotatable with respect to stanchion 12, such that they can be disposed at any desired angle, if necessary, to accommodate and provide rails which are at any desired angle. However, typically the guardrails are at an angle the same as the angle of the pitch line of the stair, as shown in Fig. 4.
  • As is the case with jaw assembly 22, it can be seen that brackets 70 and 72 can be longitudinally adjusted along stanchion 12 by virtue of a plurality of registering bores, such as 80 and 82.
  • The above description is intended in an illustrative rather than a restrictive sense, and variations to the specific configurations described may be apparent to skilled persons in adapting the present invention to other specific applications.

Claims (8)

  1. A mounting apparatus (10) for use in erecting a temporary guardrail on a stair stringer (50) having a stringer web (52), a bottom stringer flange (54) and a top stringer flange (56), said mounting apparatus comprising:
    an elongated stanchion (12) having a front side (14) and a back side (18);
    a first front bore (31) in said front side (14) of said stanchion (12) and a first back bore (30) in said back side (18) of said stanchion (12), said first front and back bores (31,30) forming a first registering pair of bores (31, 30);
    a first jaw assembly (20) releasably attached to said stanchion (12), said first jaw assembly (20) including a first L-shaped head portion having a first flange portion (24) adapted to engage said stringer web (52) of said stair stringer (50) proximal said bottom stringer flange (54) thereof and a first leg portion (26) attached to said first flange portion (24), and a first compression assembly (28, 32) operative to apply a compressive force to the back side (18) of said stanchion (12) to urge said stanchion (12) against bottom flange (54);
    the first compression assembly (28, 32) comprising a first shank portion (28) extending from said first leg portion (26) through said first registering pair of bores (31, 30) and a first tightener (32) operatively connected to said first shank portion (28) to urge said first shank portion (28) in a direction away from said first flange portion (24) to thereby compressively urge said first flange portion (24) into engagement with said stringer web (52) of said stringer (50) and said front side (14) of said stanchion (12) against bottom flange (54);
    the stanchion (12) further comprising a second registering pair of bores (43, 42), the second registering pair of bores (43, 42) comprising a second front bore (43) in said front side (14) of said stanchion (12) and a second back bore (42) in said back side (18) of said stanchion (12), said second front and back bores forming the second registering pair of bores (43,42);
    a second, axially spaced jaw assembly (22) releasably attached to said stanchion (12), said second jaw assembly (22) including a second L-shaped head portion having a second flange portion (36), adapted to engage stringer web (52) of said stringer (50) proximal said top stringer flange (56) thereof and a second leg portion (38) attached to said second flange portion (36), a second compression assembly (40, 44) operative to apply a compressive force to the back side (18) of said stanchion (12) to urge said stanchion (12) against top flange (56) of said stringer (50);
    the second compression assembly (40, 44) comprising a second shank portion (40) extending from said second leg portion (38) through said second registering pair of bores (43, 42) and a second tightener (44) operatively connected to said second shank portion (40) to urge said second shank portion (40) in a direction away from said second flange portion (36) to thereby compressively urge said second flange portion (36) into engagement with said stringer web (52) of said stringer (50) and said front side (14) of said stanchion (12) against top flange (56);
    the stanchion (12) further comprising a plurality of further registering pairs of bores (43,42), each comprising a front bore (43) in said front side (14) of said stanchion (12) and a back bore (42) in said back side (18) of said stanchion (12), said corresponding front and back bores (43,42) forming the further registering pair of bores (43,42), said second shank portion (40) extending from said second jaw assembly (22) being movable from said second registering pair of bores (43,42) to extend through said further registering corresponding pair of bores (43,42); and
    at least one bracket (70,72) operatively attached to said stanchion (12) and axially spaced from said second jaw assembly (22), said bracket (70,72) being adapted to receive a temporary rail member (84,86).
  2. The apparatus (10) of Claim 1, wherein said first shank portion (28) spans said front (14) and back sides (18) of said stanchion (12).
  3. The apparatus (10) of Claim 2, wherein said second shank portion (40) spans said front (14) and back sides (18) of said stanchion (12).
  4. The apparatus (10) of Claim 1, wherein there are at least two of said brackets (70,72) axially spaced from said second jaw assembly (22).
  5. The apparatus (10) of Claim 1, wherein there is a fastener (90, 92) securing said at least one rail member (74, 86) to said stanchion (12).
  6. The apparatus (10) of claim 1, wherein said first and/or second tightener (32,44) comprises a nut.
  7. The apparatus (10) of Claim 1, wherein there is a spacer (60) overlying said second and said plurality of further corresponding pairs of registering bores (43,42) on said backside (18) of said stanchion (12), said spacer (60) being disposed between said second tightener (44) and said back side (18) of said stanchion (12).
  8. The apparatus (10) of Claim 1, wherein said first jaw assembly (20), said second jaw assembly (22), and said at least one bracket (70,74), are rotatable relative to said stanchion (12).
EP11778404.1A 2010-05-07 2011-05-06 Apparatus for forming temporary guardrails on stairs Active EP2567044B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12/775,817 US20110272659A1 (en) 2010-05-07 2010-05-07 Apparatus for Forming Temporary Guardrails on Stairs
PCT/US2011/035479 WO2011140421A1 (en) 2010-05-07 2011-05-06 Apparatus for forming temporary guardrails on stairs

Publications (3)

Publication Number Publication Date
EP2567044A1 EP2567044A1 (en) 2013-03-13
EP2567044A4 EP2567044A4 (en) 2014-05-28
EP2567044B1 true EP2567044B1 (en) 2021-12-01

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EP11778404.1A Active EP2567044B1 (en) 2010-05-07 2011-05-06 Apparatus for forming temporary guardrails on stairs

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US (1) US20110272659A1 (en)
EP (1) EP2567044B1 (en)
AU (1) AU2011247977B2 (en)
CA (1) CA2798629C (en)
ES (1) ES2899984T3 (en)
WO (1) WO2011140421A1 (en)

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JP7547047B2 (en) * 2016-09-16 2024-09-09 ディバ インベストメンツ ピーティーワイ リミテッド アズ トラスティー フォー ハンドレイル ホールディング トラスト Safety Rail System
US11236511B2 (en) 2019-04-23 2022-02-01 Buildergear Corporation Guard rail system and components
US11851900B2 (en) * 2020-01-30 2023-12-26 James Croswell Brim, III Temporary safety railing system and method
CN112065080B (en) * 2020-09-14 2022-02-01 山东道远建设工程集团有限公司 Fixing piece of safety protection skirting board for stairs in construction site and construction method thereof
WO2023150308A1 (en) * 2022-02-04 2023-08-10 Fortress Iron, Lp Adjustable stair railing post assembly

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Publication number Publication date
US20110272659A1 (en) 2011-11-10
EP2567044A4 (en) 2014-05-28
WO2011140421A1 (en) 2011-11-10
ES2899984T3 (en) 2022-03-15
CA2798629A1 (en) 2011-11-10
EP2567044A1 (en) 2013-03-13
CA2798629C (en) 2017-06-06
AU2011247977B2 (en) 2015-05-07
AU2011247977A1 (en) 2012-11-29

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