WO2005090705A1 - Ensembles a limons et supports de marches pour escaliers - Google Patents

Ensembles a limons et supports de marches pour escaliers Download PDF

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Publication number
WO2005090705A1
WO2005090705A1 PCT/CA2005/000420 CA2005000420W WO2005090705A1 WO 2005090705 A1 WO2005090705 A1 WO 2005090705A1 CA 2005000420 W CA2005000420 W CA 2005000420W WO 2005090705 A1 WO2005090705 A1 WO 2005090705A1
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WO
WIPO (PCT)
Prior art keywords
kit
stringer
step support
modular
support units
Prior art date
Application number
PCT/CA2005/000420
Other languages
English (en)
Inventor
Raymond Couture
Original Assignee
Raymond Couture
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 Raymond Couture filed Critical Raymond Couture
Priority to CA002595709A priority Critical patent/CA2595709A1/fr
Priority to US10/593,472 priority patent/US20080229686A1/en
Publication of WO2005090705A1 publication Critical patent/WO2005090705A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
    • E04F11/02—Stairways; Layouts thereof
    • E04F11/022—Stairways; Layouts thereof characterised by the supporting structure
    • E04F11/035—Stairways consisting of a plurality of assembled modular parts without further support
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
    • E04F11/02—Stairways; Layouts thereof
    • E04F2011/0203—Miscellaneous features of stairways not otherwise provided for
    • E04F2011/0205—Stairways characterised by the use of specific materials for the supporting structure of the treads
    • E04F2011/0209—Stairways characterised by the use of specific materials for the supporting structure of the treads mainly of metal
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
    • E04F11/02—Stairways; Layouts thereof
    • E04F2011/0203—Miscellaneous features of stairways not otherwise provided for
    • E04F2011/0205—Stairways characterised by the use of specific materials for the supporting structure of the treads
    • E04F2011/0218—Stairways characterised by the use of specific materials for the supporting structure of the treads mainly of organic plastics with or without reinforcements or filling materials

Definitions

  • the present invention relates to stairways and, more particularly, to modular stairways made of pre-fabricated components such as stringers, step supports, railings, etc., typically in the form of a kit for assembly on site, ⁇ AC GftouN Q F.THJ. thoroughlyl, ⁇ .yENI[QN, Typically, staircases are completely produced on site With the various wood components being cut to size as the staircase is progressively erected on site. Also, it has been proposed to completely assemble a staircase in the factory such that a pre-assembled staircase is delivered to the construction site for direct and easy installation thereat, Such a modular staircase is disclosed in the Canadian Application No.
  • a modular staircase includes a permanent framing made of metallic stringers and vertically extending step supports that are secured along the stringers.
  • Each step support includes upper and front flanges adapted to be secured respectively to a tread and to a riser of each step of the staircase. If the staircase has a partly exposed side, various decorative or finishing wooden components, including treads, riaera, false or decorative stringers, mouldings, etc., are provided to cover any exposed structural metallic framework and particularly the stringers.
  • treads, riaera, false or decorative stringers, mouldings, etc. are provided to cover any exposed structural metallic framework and particularly the stringers.
  • the flight of stairs described therein comprises at least one pair of stringer units for supporting at least one tread thereon and bolted thereto, the stringer units each comprising a side plate and a fixation plate extending outwardly therefrom and parallel thereto for fixing a fixation of a first unit to a side plate of an adjacent unit by riveting or bolting.
  • a two-part stringer unit comprising Intersecting oblong slots allows for step height adjustments.
  • the flight of stairs described therein comprises sectional stringers formed of prefabricated sheet metal tread-supporting plates, each plate oomprieing a vertical body portion, two ortical and parallel longitudinal flanges perpendicular thereto and a horizontal rectangular top flange for supporting a tread thereon and bolted thereto.
  • One ⁇ f the longitudinal flanges of a given plate comprises a plurality of sets of perforated holes for combining with a sot of corresponding perforated holes in an adjacent longitudinal flange of an adjacent plate thereby providing adjustable fastening means therefor.
  • a modular stringer for a staircase comprising at least two matingly coupled step support units defining the stringer, said step support units each comprising a main structural body, a first mating structure extending substantially laterally from a first lateral side thereof and a second mating structure extending substantially laterally from an opposing lateral side thereof, said first mating structure of said step support unit being adapted to be matingly coupled with an adjacent second mating structure of an adjacent step support unit such that said adjacent unit is vertically offset therefrom.
  • a step support unit to be matingly coupled with at least one structurally similar adjacent step support unit such that said adjacent unit is vertically offset therefrom, the unit for the construction of a modular stringer for a staircase, the step support unit comprising a main structural body, a first mating structure extending substantially laterally from a first lateral side thereof and a second mating structure extending substantially laterally from an opposing lateral side thereof, said first structure comprising at least one mating element and said second structure comprising at least one complementary mating element complementary to said mating element of said first structure and vertically offset therefrom, Still in accordance with the present invention, there is provided a kit for erecting a staircase between an upper and a lower structure, the Kit comprising at least two modular stringers each comprised of an equal number of step support units defining the stringers and a series of steps adapted to be mounted to said step support units, said step support units each comprising a main structural body adapted to support said steps thereon, a first mat
  • a modular stringer for a staircase comprising at least two coupled free standing step support units defining the stringer, said step support units each comprising at least one shaft extending vertically at least partially along a first lateral side thereof and at least one coupling arm extending substantially laterally and horizontally from an opposing lateral side thereof, said coupling arm of a first step support unit being adapted for accepting and solidly retaining said shaft of an adjacent step support unit therein such that said adjacent step support unit may be vertically offset therefrom.
  • kits for erecting a curling staircase lined by an outside structure defining an outside curl of said staircase comprising a modular stringer comprised of at least two modular step support units defining the stringer, a set of corresponding wall mountable step support units and a set of steps adapted to be mounted on said step support units, said modular step support units each comprising at least one shaft extending vertically at least partially along a first lateral side thereof and at least one coupling arm extending substantially laterally and horizontally from an opposing lateral side thereof, said coupling arm of said modular step support units being adapted for accepting and solidly retaining said shaft of an adjacent modular support unit therein such that said adjacent modular support unit may be vertically offset therefrom.
  • a kit for erecting a staircase between two lining structures comprising at least two stringers adapted to be mounted to said lining structures and a series of steps adapted to be mounted to ⁇ aid stringers, each said step comprising a tread and a riser, the kit further comprising a plurality of step mounting brackets used to mount said treads and said risers to said stringers, wherein said treads and said risers are adapted to extend horizontally between said stringers and to be fastened thereto such that a mounted tread defines a substantially horizontal tread surface and a mounted riser defines a substantially vertical riser surface extending upwardly from an area proximal to a rear end of a lower mounted tread and an area proximal to a front end of an adjacently mounted higher tread, wherein a first flange of said step mounting brackets is adapted to be fastened within a recess provisioned therefor in a longitudinal face of longitudinal ends of both said treads and said rise
  • a method for erecting a self-standing ⁇ taircaao between an upper structure and a lower structure comprising the steps of: a. providing a set of step support units, a set of steps, two upper support structure ⁇ and two lower support structures, said step support units each comprising a first mating structure extending substantially laterally from a first lateral side thereof and a complementary mating structure extending substantially laterally from an opposing lateral side thereof; b. building two substantially similar stringers by matingly coupling said first mating structure ⁇ f said step support units with said complementary mating structure of successive adjacent step support units in a same stringer; c.
  • a set of modular step support units a set of wall mountable step support units, a set of steps
  • said modular step support units each comprising at least one shaft extending vertically at least partially along a first lateral side thereof and at least one coupling arm extending substantially laterally and horizontally from an opposing lateral side thereof;
  • building a curling stringer by coupling said shaft of said modular step support units with said coupling arm of successive adjacent modular step support units;
  • mounting said wall mountable step eupport units to the wall such that once mounted, said wall mountable step support units operate cooperatively with said modular step support units; and ⁇ , mounting said steps on said step support units.
  • a method for erecting a staircase between two lining structures comprising the steps of: a. providing two risers each defined by successive horizontal tread bearing and vertical riser bearing surfaces, a set steps comprising a set of treads and a set of risers, a set of step mounting brackets, a set of finishing modules and a set of finishing brackets; b. mounting said stringers to the Ijning structures; c. fastening a first flange of said step mounting brackets and a first flange of said finishing brackets within a recess provided therefor in longitudinal ends of said treads and said risers; d.
  • Figure 1 provides a perspective view of a staircase constructed from a stringer and step support kit in accordance with an illustrative embodiment ofthe present invention
  • Figure 2 provides a perspective view of a step support module from the stringer and step support kit of Figure 1
  • Figures 3 and 3A respectively provide a plan and cross sectional view of the alignment of two successive step support modules from the stringer and step support kit of Figure 1
  • Figure 4 provides an exploded perspective view of the assembly of a floor support flange to a bottommost step support module from the stringer and step support kit of Figure 1
  • Figure 5 provides an exploded perspective view of the assembly of a floor support flange to an uppermost step support module from the stringer and step support kit of Figure 1
  • Figure 6 provides an exploded perspective view of the assembly of a step and finishing elements there
  • Figure 8 provides a perspective view of an alternative Staircase constructed from a stringer and step support kit in accordance with an alternative illustrative embodiment of the present invention
  • Figure 8A provides a cross sectional view of the finished stringer of the staircase in Figure 8
  • Figure Be provides a cross sectional view of the railing of the staircase of Figure 8
  • Figure 9 provides a perspective view of a step support module from the stringer and step support kit of Figure 8
  • Figures 10 and 10A respectively provide a plan and cross sectional view of the assembly of two successive step support modules from the stringer and step support kit of Figure 8
  • Figure 11 provides an exploded perspective view of the assembly of a floor support structure to a bottommost step support module from the stringer and step support kit of Figure 8
  • Figure 12 provides an exploded perspective view of the assembly of a floor support structure to an uppermost step support module from the stringer and step support kit of Figure 8
  • Figure 13 provides a perspective view of a further alternative staircase constructed from a stringer and step support kit in accordance with a further
  • the staircase S is illustratively comprised of a set of steps, as in 12, each comprising a tread 14 and a riser 16 mounted on two lateral stringers, as in 18.
  • the stringers 18, which extend obliquely from a bottom floor (not shown) to an upper floor U, are comprised of individually adjusted modular step supports, as in 20, assembled to form the stringers 18.
  • the modular step ⁇ upport ⁇ 20 are generally constructed of a solid plastic material, or again formed of a cast metal or steel such as aluminium or the like.
  • the step supports 20 are generally defined by a top face 22 for supporting a tread 14 thereon and two parallel lateral faces 25 and 27 extending vertically downwards therefrom and respectively providing a male and a female coupling flange 24 and 26 for connecting successive step supports 20 therewith.
  • the step supports 20 further comprise a structural cross-web 28 for stabilizing and strengthening the support 20 and providing a set of support holes 30 for nailing the step supports 20 to walls, as in W or structures lining the staircase S.
  • two step supports 20 are adjustably fastened together by coupling the male and female coupling flanges 24 and 26 of the first and second step supports 20 ⁇ and 2O2 respectively.
  • the male flange 24 is illustratively comprised of circular holes 32 to be aligned with the rectangular or oblong holes 34 of the female flange 26, thereby providing adjustable means for fastening the two supports together.
  • the step supports 20 may be manufactured to provide adjustments ranging between a inch and 1 inch in height, thereby allowing the staircase S to be customized according to the specifications of the structures between hich the staircase is to be installed.
  • step supports as in 20 may be modified slightly to provide smaller or greater adjustment ranges without departing from the general scope and nature of the present disclosure.
  • a set of bolts (not seen) are fitted through the aligned circular and rectangular holes 32 and 34 respectively, and secured using a set of nuts solidly fastened thereto (also not seen).
  • a third bolt or again a nail or a screw, may be secured though the square hole 36 of the female flange 26 by piercing a matching hole 38 at the bottom ⁇ f the male flange 24, thereby also securing the adjusted position of mated supports 20.
  • the circular holes 32 could be threaded and the fastening bolts could be fastened therein to provide a secure juncture
  • the circular holes 32 could be replaced with bolts integrally coupled to the male flange 24 and extending outwardly therefrom to be guided through the oblong holes 34 of the female flange 26 and secured therein using a set of nuts.
  • an intermediary mating member could be inserted between each mating flange pair to enhance the coupling thereof. Further fastening and coupling means and techniques may also be considered without departing from the general scope and nature of the present disclosure.
  • the staircase S is constructed by first building and mounting the stringers 18, As discussed hereinabove with reference to Figures 3A and 3B, the individual step supports 20 are adjustably coupled together using a set of bolts and securing nuts. Other fastening means may also be considered in this step without departing from the general scope and nature of the present disclosure.
  • the stringers 18 are mounted to the walls, as in W, or structures (e.g. wall studs) lining the staircase S by fastening the stringer 18 thereto using nails or screws through the holes 30 provisioned therefor.
  • the female flange 26 of the bottommost step support 2Q 6 is fitted with a support flange 40 for securely coupling the bottom of the staircase S to the lower floor framework (not show).
  • the male support flange 40 is adjustably fastened to the female coupling flange 26 by aligning the circular holes 42 of flange 40 to the rectangular or oblong holes 34 of coupling flange 26, and fastening two bolts 44 therethrough using nuts 4 ⁇ .
  • the forward facing lip 48 of the support flange 40 may be fastened to the floor framework (not shown) using a set of screws, nails and other such fastening means, thereby securing the bottom of the staircase S thereto.
  • a third bolt may be secured though the square hole 36 of the coupling flange 26 by piercing a matching hole 50 in the support flange 40, thereby also securing the adjusted position thereof.
  • the male flange 24 of the uppermost step support 20u is fitted with a support flange 62 for securely coupling the top of the staircase $ to the upper floor frame work, illustrated here as a floor support beam 54.
  • the female support flange 52 is adjustably fastened to the male coupling flange 24 by aligning the circular holes 32 of coupling flange 24 to the rectangular or oblong holes 56 of flange 52, and fastening two bolts 58 therethrough using nuts 60.
  • the backward facing lip 62 of the support flange 52 may be fastened to the upper floor framework, as in floor support beam 54.
  • a third bolt or again a nail or screw, may be secured though the square hole 64 of the support flange 62 by piercing a matching hole 66 in the coupling flange 24, thereby also securing the adjusted position thereof
  • the staircase S generally comprises a set of steps 12 each comprising a tread 14 defining the generally horizontal top face of the step 12 and a riser 16 extending substantially vertically upward from the back thereof
  • a set of wall covers 66 are fitted along the sides of the staircase S to provide a finished look by hiding the gap between the walls W running along the staircase S and the steps 12 and by covering the hardware used to construct the staircase S
  • a border or moulding 67 may also be included to run obliquely along the staircase S to cover the joints between successive wall covers 66, to hide any gap left between the wall oovera 66 and the wall W to which is mounted the staircase S, and thus to provide a finished look.
  • Additional finishing pieces may also be included to hide the inner faces of the step supports 20.
  • a substantially triangular board 69 may be fitted on the inner faces of each support 20 thereby hiding part of same from view.
  • a running board 71 extending the length of the modular stringer 18 and fitted below the boards 69 can complete the masking effect.
  • a series of L-shaped brackets 68 and J-shaped brackets 70 are first fitted to the treads 14 and risers 16.
  • the brackets 68 and 70 which may be manufactured of a hard plastic, a metal, or any substantially rigid material, are used to fasten the treads 14 and risers 16 to the stringers 18 and provide means for coupling the wail covers 66 thereto.
  • the L- shaped brackets 68 are generally comprised of a first flange 72 and a second flange 74 extending substantially normal thereto.
  • - IX - flange respectively comprises a recessed fastening hole 76 and 78.
  • the first flange 72 is fastened within a recess 80 in the side walls of the treads 14 and risers 16 using a screw or nail through hole 76, whereas the second flange 74 is subsequently fastened to the step supports 20.
  • the recessed fastening holes 76 and 78 are such that once a bracket flange is fastened, the head of the fastening screw used therefor is flush therewith.
  • the J- shaped brackets 70 are generally comprised of two parallel flanges and a curved or squared member generally substantially normal thereto and joining the two,
  • the parallel flanges illustratively include a shorter fastening flange 82 and a longer stabilizing flange 84.
  • a recessed fastening hole 86 in the fastening flange 82 allows a screw to fasten the J-shaped bracket 7O within a recess 80 in the side walls of the treads 14 and risers 16, whereas a hole 88 in the stabilizing flange 84 allows the fastening screw to pass fully therethrough and provides access thereto for the fastening thereof.
  • the recessed fastening holes 86 is such that once a bracket flange 82 is fastened, the head of the fastening screw used thereof is flush therewith,
  • an L-shaped bracket 68 ⁇ and a J-shaped bracket 70R are illustratively fastened to a riser 16.
  • the riser is then positioned on the stringer 18 such that the bottom face 90 of the riser 16 rests on the top surface 22 of the step support 2Q ⁇ ,
  • the riser 16 can then be fastened to the lateral face 27 of step support 20a using the second flange 74 of the L-shapod bracket 68 R extending sidewardly therefrom.
  • an L-shaped bracket 68 ⁇ and two j-shaped brackets 70 ⁇ are fastened to the side wall of the tread 14.
  • the tread is then positioned on the stringer 18 such that the back face 92 of the tread 14 abuts on the front face 94 of the riser 16 and such that the bottom face 96 of the tread 14 rests on the top face 22 of support 2Q-,
  • the tread 14 is then fastened to the support 20 ⁇ using the second flange 74 of the L-shap ⁇ d bracket 68 ⁇ extending sidewardly therefrom.
  • the same procedure can then be repeated for every successive step 12, As for the uppermost riser 16u, the brackets 68 and 70 may be fastened directly in the upper floor structure U.
  • the L- shaped brackets 68 provide a lateral adjustment range, thereby allowing the steps 12 to be adjusted accordingly between the stringers 18.
  • the lateral adjustment range depends on the actual width of the modular supports 20 to which are fastened the brackets.
  • the lateral adjustments may range between ⁇ A inch and V* inch, though larger or smaller ranges may be considered by modifying the width of The supports 20.
  • the L-shaped brackets 68 could comprise an oblong hole 78 rather than a circular hole, thereby providing a similar feature.
  • the substantially triangular wall covers 66 each generally comprising a vertical edge 98, a horizontal edge 100 and an oblique edge 02, are slid into place between the parallel flanges 82 and 84 of the J- shaped brackets 70 such that the vertical and horizontal edges 98 and 100 abut on the curved or squared member of the J*ahaped brackets 70 and on the second flange 74 of the L-shaped brackets 68,
  • the wall covers 66 may be fitted within the J-shaped brackets 70 such that the wall covers 66 are flush against the tread and riser sidewalls.
  • the wall covers 66 will not only be stabilized between the two parallel flanges of the j-shaped brackets 70 but will also bear against the tread and riser sidewalls.
  • ⁇ very bracket is fully covered and hidden by the treads 14, risers 16 and wall covers 66. Due to the adjustability of the riser heights, namely by adjusting the coupling of the step supports 20, the wall covers 66 may be correspondingly shifted, thereby producing an undesirable visual effect.
  • a border or moulding 67 may be fitted on top of the wall covers 66.
  • the moulding generally comprises a coupling end 104 defining a recess 106 for accepting the oblique edge 102 of the wall covers 66 therein, If the wall W to which is mounted the staircase S is perfectly flat, the moulding 67 may be fitted perfectly vertically to the wall cover 66. On the other hand, if the wall W is not perfectly flat, the steps 12, and consequently the wall covers 66, may not necessarily be flat against the walls W.
  • the step supports 20 will allow a step 12 of standard width to be fastened thereto with a certain margin of flexibility, namely governed by the thickness of the step supports 20 to which will be fastened the steps 12, Namely, as presented hereinabove, lateral adjustments ranging between a quarter (%) and a half (V_) inch are provided by the illustrated supports 20. By varying the thickness of the supports 20, smaller or greater ranges may be considered. Brackets 68 with oblong rather than circular holes 78 could also provide a similar advantage.
  • the moulding 67 and wall covers 66 should provide slightly rounded coupling edges, A rounded wall cover edge 102 and a rounded moulding recess 106, allows the moulding 67 to be fitted at a slight angle to the wall covers 66, thereby absorbing the imperfections in the walls W, as illustrated by the space 107 left between the moulding 67 and the wall W in Figure 7D.
  • the moulding is nailed, screwed and/or glued into the walls W thereby lining the staircase s and providing a finished look.
  • the staircase S may also comprise additional components to better hide the hardware used therefor.
  • a triangular board 69 may be positioned below each tread 14 on the inner face of each support 20.
  • a running board 71 extending the length of the modular stringer 18 and fitted below the boards 69 can complete the masking effect.
  • the boards 69 may first be glued to the supports 20.
  • a Z-shaped bracket 115 is then nailed to the bottom inside face of the running board 71.
  • the running board 71 is then fitted below the boards 69 by sliding the tongue 109 lining the bottom of the boards 69 into the groove 111 lining the top of the running board 71 and resting the z-shaped bracket 115 against the wall W.
  • a set of finishing nails 113 are used to secure the juncture between the boards 69 and the running board 71, and a bottom moulding 117 is nailed at an angle below the running board 71 to hide the space between same and the wall W and hide the Z-shaped bracket 115 therebehind.
  • the staircase S is constructed such that all the mounting and structuring hardware is covered and hidden once the staircase S is complete. Additionally, the staircase may be fully constructed and customized on site, as all pieces are adjustable and designed to provide a customizable staircase S. Furthermore, no special tools are required to mount the staircase. Ultimately, a single screwdriver may suffice to fasten all the required components.
  • the treads 14, risers 16, covers 66 and mouldings 67 may each be manufactured of varying hardwoods, softwoods, composite materials and/or plastics and provide varying finishes. Since all the hardware is adequately hidden by these components, damage to the finished surfaces is avoided. Alternatively, unfinished materials may also be used for the subsequent painting or covering thereof.
  • an alternative staircase S' constructed from a stringer and step support kit in accordance with an alternative illustrative embodiment of the present invention will be presented.
  • a free standing staircase S' is designed to be mounted without resting on side walls or structures. Generally, the staircase S' will rest on a bottom structure, illustrated here as single blocks 108, and an upper structure, illustrated here as single blocks 110.
  • the blocks 108 and 110 generally represent any solid structures such as floor or wall structures including, but not limited to, a floor beam or joist, or any other such solid structure
  • the staircase S' is illustratively comprised of a set of steps, as in 112, mounted on two lateral stringers, as in 114.
  • the stringers 114 which extend obliquely from the bottom structure 108 to the upper structure 110 are comprised of individually adjusted modular step supports, as in 116 assembled to form the stringers 114,
  • the modular step supports 116 are generally manufactured of a solid cast metal or steel such as aluminium or the like
  • the step supports 116 are generally defined by parallel top and bottom oblique faces 118 and 119 respectively and two parallel lateral faces 120 and 121 extending substantially vertically therebetween and respectively providing a male and a female coupling flange 122 and 124 for connecting successive step supports 116 therewith,
  • the step supports 116 further comprise a structural crossbar 126 for stabilizing and strengthening the support 116, and inherently, the staircase S ⁇ and two step fastening holes
  • two step supports 116 are adjustably fastened together by coupling the male and female coupling flanges 122 and 124 of the first and second step supports 116-
  • the male flange 122 is illustratively comprised of circular holes 128 to be aligned with the rectangular or oblong holes 130 of the female flange 124, thereby providing adjustable means for fastening the two supports together.
  • the step supports 116 may be manufactured to provide adjustments ranging between a half ( 1 /a) inch and one (1) inch in height, thereby allowing the staircase S' to be customized according to the specifications of the structures between which the staircase is to be installed.
  • step supports as in 116 may be modified slightly to provide smaller or greater adjustment ranges without departing from the general scope and nature of the present disclosure.
  • a set of bolts 132 are fitted through the aligned circular and rectangular holes 128 and 130 respectively, and secured using a set of nuts 134 solidly fastened thereto.
  • the fastening holes 128 and 130 may be recessed such that the bo its and nuts do not extrude significantly from the plane of the supports 116.
  • a third bolt may be secured though the square hole 136 of the female flange 124 by piercing a matching hole 13a at the bottom of the male flange 122.
  • the staircase S' is constructed by first building and mounting the stringers 114.
  • the individual step supports 116 are adjustably coupled together using a set of bolts 132 and securing nuts 134.
  • other fastening means may also be considered in this embodiment without departing from the general scope and nature of the present disclosure.
  • the female flange 124 of the bottommost step support 116 B is fitted with a support structure 140 for securely resting the bottom of the staircase S' to the lower structure 108.
  • the support structure 140 comprising a male flange 142 for mating with the female flange 124 of the support 116 B , is adjustably fastened thereto by aligning the circular holes 144 of flange 142 to the rectangular or oblong holas 130 of coupling flange 124 and fastening two bolts 146 therethrough using nuts 148.
  • a third bolt may be secured though the square hole 136 of the coupling flange 1 2 by piercing a matching hole 152 in the support structure 140.
  • the male flange 122 of the uppermost step support 116 u is fitted with a support structure 154 for securely resting the top of the staircase S' to the upper structure 110,
  • the support structure 154 comprising a female flange 156 for mating with the male flange 122 of the support 116_ ⁇ , is adjustably fastened thereto by aligning the circular holes 128 of coupling flange 122 to the rectangular or oblong holes 158 of flange 156 and fastening two bolts i ⁇ o therethrough using nuts 162.
  • the backward facing foot 164 of the support structure 154 may be rested on the upper structure 110, thereby securing the top of the staircase S' thereon.
  • a third bolt may be secured though the square hole 166 of the support structure 154 by piercing a matching hole 168 in the coupling flange 122.
  • the steps 112 illustratively comprise a solid core 163 which may be manufactured of solid wood, particle board, a set of layered and glued particle boards, or other such materials.
  • a plastic cap 166 is Bolidly fixed thereto possibly using a strong adhesive or glue.
  • the core 163 of the steps 112, and the peripheral edges 167 of the plastic caps 165, are then covered by a protective sheet 169, such as a galvanised steel sheet, that Is wrapped around the step's core 163 through high tension lamination using an asphaltic adhesive or other such adhesives and further secured thereto by a set of nails or screws 171 secured thereunder.
  • the steps 112 are generally waterproof, that Is that no water may attack the wood or particle board core, and substantially fireproof. Furthermore, by using a high tension lamination method, the steps gain a high structural resilience adequate for any industrial, commercial or even residential use wherein safety, durability, sturdiness and even fireproofness is desired or even required by building codes.
  • the use of a galvanised steel layer which may comprise of a steel sheet of 16 to 30 gauge, or again any gauge desired or deemed necessary for the application at hand, enhances the durability of the steps and reduces the occurrence of rust or corrosion of the step surface.
  • other steps may also be considered in the present embodiment without departing from the general scope and nature of the present disclosure.
  • the steps 112 are fastened to the step supports 116 using a set of L-shaped brackets 170, each comprising a threaded vertical flange 172 for the fastening thereof to the supports 116 and a horizontal flange 174 for the fastening thereof to the bottom of the steps 112.
  • the L-shapad brackets 170 are first fastened to the step supports 116 using a set of bolts 173 securely fastening the threaded vertical flanges 172 thereof to the fastening holes 127, Subsequently, each step 112 is successively fastened on top of the horizontal flanges 174 using a set of screws (or nails) 175 that pierce the outer shell 169 of the steps 112 and lodge within the solid core 163.
  • the L-shaped brackets 170 are first secured to the bottom of the steps 112, and the steps are subsequently secured to the stringers 114 using the brackets 170 fastened thereon and a set of bolts 173 coupled therewith through the stringer holes 127,
  • brackets 170 may be used to provide lateral adjustability to the steps 112.
  • additional brackets may increase the strength and stability of the steps 112.
  • the steps 112 may be manufactured of any solid material such as hard plastics, wood, metal and steal. The steps may also be covered with paint or carpet, or again present a rugged or textured surface for increased grip.
  • a set of risers may also be coupled to the staircase S' using an additional set of brackets 170 fitted to the step supports 116, or other such fastening means.
  • the staircase S' may further comprise one or two railings 176.
  • the railings each illustratively comprising a set of vertical bars 178 and an oblique bar 180 lining the edge of the staircase S', are fastened to the top oblique edges 118 of the step supports 116.
  • the vertical bars 178 are fastened at one end to the step supports 116 using a fastener such as a screw or bolt, and fastened at the other end, as seen in the cross section of Figure 8C, to the oblique bar 180.
  • a fastener such as a screw or bolt
  • Other fastening configurations and methods may also be considered without departing from the general nature of the illustrated embodiment. Namely, the vertical bars 178 could be fastened to the inside or outside face of the step supports 116 rather than to their upper edges 118.
  • the railing bar 180 of the illustrated embodiment is hollow, any type of railing bar, whether It be hollow, full, metallic or manufactured of wood and/or plastic, may be considered, though metallic railings should be used if a fireproof staircase S' is desired or required by commercial or industrial building codes.
  • the stringers 14 may also be covered with an aesthetic sheeting or mould 182 to cover the generally industrial look of the step supports 16 and hardware. As seen in Figure 8 and in the cross section of a stringer 114 In Figure B ⁇ , two lateral covers 184 are first fixed to the step supports 116, either using screws, bolts or other such fasteners, or again using a type of glue or adhesive. Top and bottom caps 186 are then added to the structure to complete the cover.
  • the installation of the sheeting 180 may be facilitated if done prior to mounting the steps 114 to the stringers 112. Holes needed to fasten the step hardware may be pierced through the aesthetic sheeting 182.
  • Various fastening means may be utilised to mount the aesthetic sheeting 182 to the staircase S'. Namely, a set of hardware clips and brackets may be fastened to the step supports 16 to hold the sheeting thereon. Alternatively, the sheeting 182 may also be glued onto the step supports 116.
  • an adjustable spiralling or curling staircase S" is illustratively comprised of a set of steps, as in 184, each illustratively comprising a tread 186 and a riser 188, mounted helicoidally within a rounded wall ".
  • the staircase S" is not mounted on two collinear stringers, in this illustrative embodiment, the staircase S" is mounted on a set of wall-mounted step supports 190 and a corresponding set of successively mounted adjustable modular step supports 192.
  • the adjustable modular step supports 192 are generally manufactured of a solid cast metal or steel such as aluminium or the like, though hard plastics may also be considered.
  • the step supports 192 are generally comprised of a substantially rectangular upper section 193 and a tapered lower section 194 extending vertically downward therefrom.
  • the upper sections 193 generally comprise a top face 195 on which may be installed the treads 186, a substantially flat lateral face 196 extending generally vertically downward therefrom upon which may be mounted the risers 188 and a set of extending arms 198 adjustably fastened thereon.
  • the lower sections 194 generally comprise a substantially planar member comprising a tubular lateral edge 199, and two cutouts 200 thereby defining two cylindrical shafts 201.
  • the set of extending arms 198 of a lower step support 192 are configured to be adjustably and pivotally fastened to respective cylindrical shafts 201 of an adjacent upper step support 1 ⁇ 2. Consequently, a spiralling stringer may be constructed by the successive coupling of the modular step supports 192, Adding reference to Figure 15, the bottommost step support 192p should be fastened to a structural component of the bottom floor F from which the staircase S" is extending.
  • this structure is represented by a structure block 202 which could, for example, be part of a floor joist or beam or a wall stud.
  • a set of two joints 204 are pivotally coupled to the cylindrical shafts 201 thereof.
  • the joints 204 each generally comprising two substantially identical members fastened together by a set of nuts and bolts 206, define a cylindrical opening 208 for accepting and retaining the cylindrical shafts 201 therein.
  • the joints 204 further comprise a foot end 210 allowing for the fastening thereof to the block 202 using a set of screws or bolts 212, thereby securing the joints 204 and consequently the bottommost step support 192 B thereto,
  • a similar joint system may be used to secure the uppermost step support 192 u to an upper floor structure (not shown).
  • these upper floor joints would Illustratively provide two cylindrical shafts for coupling the extending arms 202 of step support 192 ⁇ thereto, and foot ends for the fastening thereof to the upper floor structure.
  • the extending arms 198 of the step supports 192 are each generally comprised of two substantially identical members 214 designed to hold a respective cylindrical shaft 201 of a subsequent upper support 192 therebetween.
  • the members 214, positioned on each side of the upper section 193 of the step support 192, are adjustably fastened thereto and define cylindrical openings 218 at a distal end thereof for accepting the cylindrical shafts 201 of a subsequent support 192 therein.
  • a set of bolts 220 are fed through rectangular or oblong slots 222 in each member 214 aligned with a 3 ⁇ t of circular ho
  • another bolt 226 is fed through a circular hole 228 at the end of each member 214.
  • the vertical alignment between subsequent step supports 192 may be selected by adjusting the height along the cylindrical shafts 201 of the upper support 192 2 at which the extending arms 198 of the lower support 192 ⁇ are coupled.
  • the vertical adjustment range is defined by the height of the extending arms 202 relative to the height of the cutouts 200, In this illustrative embodiment, an adjustment range of a half ( ⁇ ) inch to one (1) inch is available to the coupled supports 192. By increasing the height of the cutouts 200, or by reducing the height of the arms 202, one may increase that range accordingly.
  • Figures 16A and 16B cross sections of Figure 16 are presented.
  • the horizontal alignment between the step supports 192 is adjusted by sliding extending arms WQy of lower support 19 ! using the rectangular or oblong slots 222! therein and thus adjusting the reach of the arms 198 ⁇
  • the arms 198 1 securing the shafts 201 2 therein, are at their shortest extension length thereby providing a shallow step depth.
  • the arms 198. still securing the shafts 201 2 therein, are at their longest extension length thereby providing a deep step depth.
  • the horizontal adjustment range is selected between 1 to 2 inches to provide adequate customizability for a variety of stairwell configuration.
  • FIG. 16C an alternative cross sectional view of Figure 16 is presented.
  • the angle between the step supports 192 is varied by pivoting the cylindrical shafts 201 2 of the upper support 192a within the cylindrical cavity 21 B defined by the extending arms 202 ⁇ of the lower support 192-
  • the supports 201 may successively define the spiral nature of the staircase ⁇ ".
  • a stringer for staircase S" may be constructed of various segments including spiralling, turning and straight segments.
  • the supports 190 generally comprise L-shaped brackets comprising a first horizontal flange for the fastening thereof to the wall W" and a second horizontal flange for the fastening thereof to the underside of the treads 188.
  • Additional riser supports (not seen), possibly substantially similar to the step supports 190, may also be coupled to the wall W" for securing the risers 188 thereto. Consequently, the steps may be constructed on the wall-mounted tread and riser supports 190 and the modular step supports 192. Risers will be secured to the lateral faces 196 of the supports 192 and correspondingly to the riser supports. As for treads 186, they will be secured to the top faces 195 of the supports 192 and the wall-mounted supports 190.
  • various clips and brackets as used in the construction of staircases S and S', may also be used to provide versatility in the construction of staircase S".
  • the steps may also be adjusted laterally to accommodate various imperfections in the staircase materials or structures on which the staircase S" is mounted.
  • various ornamental and aesthetic features may be added to the staircase S", namely borders, mouldings and other such elements.
  • staircase S' various ornamental sheetings or covers may be fastened of glued to the supports, thereby also providing a finished look, Additionally, a railing may also be added to the staircase s" by the coupling thereof to the modular brackets 192, or again to the treads 186 or risers 188 directly.
  • the staircase S" is completely customizable and mountable on site with a minimal amount of tools.
  • the modular supports 192 may be adjusted on site to accommodate the specific configuration of the stairwell, and the wall-mounted supports, which may include L- shaped brackets as in 190, a one-piece or a modular stringer, or other such mounting means, may be secured to the wall W" to correspond therewith, The treads 186 and risers 188 may then be cut to size on site.
  • the staircase S" will be designed in advance, and parts may be brought in for a direct fitting in the stairwell. Also, the staircase S" may be fully manufactured prior to Installation.
  • finishing touches such as wall covers and mouldings may be added to cover the hardware and spiral stringer of the staircase S" using various clip and bracket systems such as discussed hereinabove with reference to staircase S and the Figures related thereto.
  • various building materials such as hard and soft woods, finished or unfinished, as well as covered and uncovered metals and plastics may all be considered to construct the staircase S"
  • adjustable modular stringer and step support kits may be used to construct staircases ranging from linear industrial and residential staircases, to spiralling and customized staircases. Each configuration providing options on adjustability and finish.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Steps, Ramps, And Handrails (AREA)

Abstract

L'invention concerne des escaliers constitués par des limons modulaires permettant l'installation sur site des escaliers dans un environnement résidentiel, commercial ou industriel. Des ensembles destinés à monter ces escaliers comprennent des unités supports de marches à couplage par appariement ou solidarisation définissant les limons d'escaliers, un ensemble de marches conçues pour être montées sur ces unités, ainsi que divers éléments et modules de finition conférant un aspect fini aux escaliers terminés. Les escaliers de l'invention comprennent des escaliers auto-portants, des escaliers linéaires, des escaliers enroulés ou en spirale et des variations réglables de ceux-ci. Chaque ensemble facilite l'installation des escaliers tout en permettant le montage d'escaliers finis solides.
PCT/CA2005/000420 2004-03-19 2005-03-21 Ensembles a limons et supports de marches pour escaliers WO2005090705A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA002595709A CA2595709A1 (fr) 2004-03-19 2005-03-21 Ensembles a limons et supports de marches pour escaliers
US10/593,472 US20080229686A1 (en) 2004-03-19 2005-03-21 Stringer and Step Support Kit for Stairways

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA002461456A CA2461456A1 (fr) 2004-03-19 2004-03-19 Limon et supports de marches pour escaliers
CA2,461,456 2004-03-19

Publications (1)

Publication Number Publication Date
WO2005090705A1 true WO2005090705A1 (fr) 2005-09-29

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US (1) US20080229686A1 (fr)
CA (1) CA2461456A1 (fr)
WO (1) WO2005090705A1 (fr)

Cited By (5)

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Publication number Priority date Publication date Assignee Title
DE102011015492A1 (de) * 2011-03-29 2012-10-04 Karl-Heinz Uhlenbusch Treppenwangensegment und aus mehreren Treppenwangensegmenten bestehende Treppe
US8453395B2 (en) 2007-08-10 2013-06-04 Armande Couture Modular stairway system and kit therefor
US8806817B2 (en) 2010-07-15 2014-08-19 Case-Modular Stair Systems Inc. Structural stringer for stairways
EP3848527A3 (fr) * 2019-11-21 2021-09-29 raumvonwert GmbH Escalier
GB2594035A (en) * 2020-02-11 2021-10-20 The Regent Engineering Co Walsall Ltd Demountable stairs

Families Citing this family (3)

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Publication number Priority date Publication date Assignee Title
US20120167494A1 (en) * 2011-01-03 2012-07-05 Latham Pool Products, Inc. Modular staircase systems
JP5986385B2 (ja) * 2012-01-13 2016-09-06 株式会社ウッドワン 仮設兼用階段及びその施工方法
US8707637B1 (en) * 2013-01-29 2014-04-29 Anthony Charles Nerad Systems and methods for removable stair treads and risers

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US2593683A (en) * 1949-07-20 1952-04-22 George W Lyons Prefabricated stair
US2724466A (en) * 1950-03-08 1955-11-22 George C Phillips Bracket for step and stair construction
CA1145526A (fr) * 1981-01-21 1983-05-03 Leopold Lapointe Volee d'escalier modulaire et auto-portante et montants pour la fabrication de celle-ci
CA1300337C (fr) * 1986-10-16 1992-05-12 Roberto Molinazzi Support modulaire pour marches d'escalier
FR2740802A1 (fr) * 1995-11-03 1997-05-09 Mottez Sa Procede de fabrication d'une structure de modules de marches d'escalier et modules de marches fabriques selon ce procede
CA2226065A1 (fr) * 1997-06-25 1998-12-25 Klaus Dieter Zenkner Element de construction de marche d'escalier
CA2366561A1 (fr) * 2000-02-09 2001-08-16 Gilles Grenier Escalier reglable et procede d'assemblage

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8453395B2 (en) 2007-08-10 2013-06-04 Armande Couture Modular stairway system and kit therefor
US8806817B2 (en) 2010-07-15 2014-08-19 Case-Modular Stair Systems Inc. Structural stringer for stairways
DE102011015492A1 (de) * 2011-03-29 2012-10-04 Karl-Heinz Uhlenbusch Treppenwangensegment und aus mehreren Treppenwangensegmenten bestehende Treppe
EP3848527A3 (fr) * 2019-11-21 2021-09-29 raumvonwert GmbH Escalier
GB2594035A (en) * 2020-02-11 2021-10-20 The Regent Engineering Co Walsall Ltd Demountable stairs
GB2594035B (en) * 2020-02-11 2024-04-10 The Regent Engineering Co Walsall Ltd Demountable stairs

Also Published As

Publication number Publication date
CA2461456A1 (fr) 2005-09-19
US20080229686A1 (en) 2008-09-25

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