This invention relates to a handrail assembly suitable for use as a safety rail or on a staircase and the like.
Handrail assemblies for a staircase usually comprise a base rail or support, a hand rail and a set of posts called balusters or banisters which extend in between and support the handrail. Each end of the handrail may be further supported by a newel post. The handrail is supported such that it is parallel to the stairs, and the banisters are generally vertical.
There are wide variations in the inclination of staircases, in the distance that they have to span and in the total number of bends or changes of direction required. Regulations normally confine modern, new-built staircases to within a certain range of inclinations. Older houses, which were built before the introduction of modern regulations, often have staircases whose inclination falls outside of the proscribed range. Accordingly, replacing a staircase in an older building can often require a builder to install a bespoke staircase, rather than using standard available components. Because of these factors there is a requirement to provide a handrail assembly which can accommodate wide variations of inclination and which can be assembled and installed both by the professional and by the do-it-yourself enthusiast.
Several variable pitch stair railing assemblies have been proposed. For example, those disclosed in U.S. Pat. No. 5,056,283, U.S. Pat. No. 4,533,121 and U.S. Pat. No. 4,352,485. Further, adjustable connecting members for connecting rigid handrails or safety rails have also been disclosed in GB-A-2299370.
It is an object of the present invention to provide a handrail assembly which allows for changes of direction and which can be used on stairways which have varying degrees of inclination and varying spans. It is a more specific aspect of the invention to provide a handrail assembly which can be readily assembled by the unskilled or at least partially skilled labour.
Accordingly, one aspect of the invention provides a kit of parts for the assembly of a handrail installable to adopt a plurality of inclinations, the kit comprising:
A second aspect of the invention provides a kit of parts for the assembly of a handrail installable to adopt a plurality of inclinations, the kit comprising:
The rail may have, in cross section, a rounded portion and a flat surface, the hollow portion of the mount preferably having an internal cross-sectional which is complimentary to that of the rail.
The kit will preferably include a plurality of posts and a plurality of brackets attachable to the handrail, the posts and brackets may have have respective mating portions for engagement therebetween, each bracket will usually have a deformable portion to accommodate a plurality of inclinations of installed handrail. The deformable portion will preferably be able to deform to accommodate a variation in inclination of, say, 10° i.e. 5° either side of its as-formed, supplied, or equilibrium, position. In a particular embodiment, the angle of deformation is preferably 7° (3.5° either side of the as-formed position).
The kit may further include at least one two-part pivotable mount for supporting the handrail, a first part of the mount having a hollow portion into which an end of the rail is insertable, the second part being mountable on a support surface, the two parts being interconnectable to provide pivotable motion with respect to one another.
Also included in the kit may be one or more connectors having hollow portions into which an end of a length of rail is insertable to interconnect two lengths of rail, one or both hollow portions preferably having an internal cross section having a rounded portion and a flat portion.
There is also provided, in a third aspect of the invention, a two-part pivotable mount or connector for a handrail, the first part of the mount having a hollow portion into which an end of a handrail is insertable, the second part of the mount being attachable to a support surface, the two parts being pivotable with respect to one another when interconnected, and wherein the internal surface of the hollow portion is shaped to prevent, in use, rotation of the hollow portion about a complimentarily shaped handrail end inserted therein.
A yet further aspect of the invention provides a connector to connect non-parallel lengths of rail, the connector having two hollow parts into which lengths of rail are insertable, the hollow parts having openings which are non-parallel, at least one of the hollow parts has an internal surface shaped to prevent, in use, rotation of that part about the end of the length of rail when inserted therein.
The internal surface of the hollow portion may be shaped to have a rounded part and a flat surface
Preferably, the openings of two hollow parts are orthogonal to one another.
In a fifth aspect of the invention there is provided a bracket to connect a post to a rail, the bracket comprising a terminal portion for engagement with an end of the post and a surface for flush engagement with a surface of the rail, and an intermediate deformable portion between the terminal portion and the surface which is deformable to accommodate different angles between the rail and post.
A further aspect of the invention provides a method of installing a handrail assembly comprising a two-part pivotable mount or connector, a length of handrail, the assembly being capable of accommodating different inclinations of handrail, the method comprising the steps of:
A yet further aspect of the invention provides a handrail assembly comprising a length of rail having one end inserted into a body portion of a connector, the connector being mounted on and secured to a support surface and being pivotable about a pivot point to accommodate a desired angle of inclination of the handrail, a plurality of posts and a plurality of brackets which connect the posts to the handrail, the brackets having a portion which is deformable to accommodate a desired angle of inclination.
The bracket may be formed from a plastics material, the material may be acrylonitrile butadiene styrene (ABS), nylon, polyeythylene, polypropylene or other hard wearing and deformable materials.
The hand rail preferably has a substantially flat lower surface and an upper generally rounded shape. Most preferably the cross-section of the handrail will be in the form of a segment of a circle, most preferably a major segment of a circle. Alternatively, the rounded portion of the cross-section may be elliptical or square in shape, or may be non-uniform.
It is most preferred that the cross-sectional shapes of at least one hollow portion of the connector, the handrail, the hollow portion of the mount are major segments of a circle.
The hand rail and rail member are advantageously formed from wood, although they may also be formed from a core material provided with a sheath, veneer or other protective coating.
A plurality of brackets and upright posts may be connected to the handrail. Further, brackets and upright posts may be connected to the rail member.
In order that the invention may be more fully understood, it will now be described, by way of example only, and with reference to the accompanying drawings, in which:
Referring to
The handrail assembly 1 has handrails 2 and upright posts or banisters 3, which are connected to the handrails 2 by brackets 4. The upright banisters 3 are connected, at their lower end, to a base rail R by further brackets 4. The handrails 2 are connected to newel posts 6 by connectors 5. The newel posts 6 are mounted on supports S by further connectors 18.
The individual components of the handrail assembly 1 will now be described.
The extension 44 has a narrow waist 45 which widens to form an annular abutment member 46. A cylindrical spigot 47 extends from the distal end of the extension 44. The spigot 47 is split twice, diametrically, to form four portions 48, each having a quadrant-like cross section and each having a chamfered edge 49.
The extension portion 44′ terminates, at its' distal end, in an annular abutment member 46′ which is provided with a substantially cylindrical engagement spigot 47′. The spigot 47′ is split to form four quadrant-like portions 48′ each extending substantially the entire length of the spigot 47′.
The brackets 4 and 4′ differ in the positions of the apertures, respectively 43A, 43B, 43C and 43A′, 43B′, 43C′, with respect to the bodies 40 and 40′ and in the angle at which the respective extensions 44, 44′ make with the respective planar surfaces 41 and 41′. The reasons for these differences will be explained below.
The tubular portion 57 has an external surface which is circular in cross-section and an internal surface which has a cross section of a major segment of a circle. The planar surface 58 is shown in dotted lines in
It will be appreciated that the parts 50, 50′ and 50″ may be configured as left-hand or right-hand parts, which is to say that the recess 53, 53′, 53″ may extend into either half of the body 52, 52′, 52″. As shown, parts 50, and 50′ may be described as left-hand parts, the recess 53, 53′ respectively, extending into the left-hand portion of the body 50, 50′. In contrast, the recess 53″ of part 50″ extends (as shown) into the right-hand portion of the body 52″. As described below, whether left-hand or right-hand parts are used will depend on the particular staircase to which the rails are installed.
Extending from the body 61 is a male member 65 which extends substantially orthogonally to the plane of the planar surface 64 and from one side of the midpoint of the plane of the planar surface 64. The distal portion of the male member 65 has an aperture 66 formed therethrough which is countersunk on one side. It will be appreciated that the part 60 may be configured as a left-hand or right-hand part by altering the side of the part 60 from which the male member 65 extends.
In use, the male member 65 can extend into the recess 53, 53′, 53″ of any of the parts 50, 50′, 50″ to form a connector 5, the aperture 66 being aligned with the aperture 55C, 55C′, 55C″ extending through the body 52, 52′, 52″. A nut and bolt (not shown) may be use to secure the two parts 50, 50′, 50″ and 60 together to form a connector 5 which is pivotable about the nut and bolt (not shown) to adopt a multiplicity of configurations for use on any desired inclination of hand rail.
A male member 75 extends from the body portion 71, the distal end of which having an aperture 76 extending therethrough, the aperture 76 being countersunk on one side.
In use, the male member 75 of part 70 is located or locatable in the recess 53″ of part 50″ the respective apertures 76 and 55C″ being aligned. A nut and bolt may be passed through the apertures 76 and 55C″ to hold the parts 50″, 70 together, the parts 50″, 70 being pivotable about the bolt to allow the so-formed connector 5′ to accommodate a large number of desired inclinations of hand rail.
The rail/post one-piece connector 9 of
A further post/rail connector 11 is shown in
The annular body 112 is connected to the first portion 81 about a line defining a diameter of the internal surface of first portion 81. The upper and lower surfaces 113, 115 of the annular portion 111 taper respectively upwardly and downwardly (as shown) to meet the (respective) upper and lower surfaces of the first portion 81.
The cap 12 of
A newel post support 18 is shown in
The inclined handrail 2 is supported by a connector 5 formed from a part 50 and a part 60, the male member 65 of part 60 being located within the recess 53 of part 50. The two parts are secured together by a nut and bolt which extends through the aligned apertures 55C and 66. The male member 65 has a curved surface which faces the curved surface 54 of the recess to reduce friction therebetween during relative pivotal motion between the two parts 50, 60 about the bolt.
The part 50 is located on the newel post 6 and secured thereto by screws which extend through apertures 55A and 55B and into the post 6. The rail 2 is retained within the part 60 by screwing through apertures present in the underside of the part and into the planar surface 2a of the rail 2.
A bracket 4 is attached to the planar surface 2a of the handrail 2. The spigot 47 of the bracket 4 is located within a hollow end of a baluster 3 so that the end of the baluster 3 abuts the annular abutment portion 46. A screw is screwed through aperture 43C to force the four portions 48 outwards, away from one another to forcefully engage the inner surface of the hollow end of the baluster 3 to prevent separation. The bracket 4 is connected to the planar surface of the handrail by screwing screws through the apertures 43A and 43B into the rail 2.
A connector 10 is located at the top of the newel post 6 by screwing screws through apertures 109 and into the planar surface 6a of the post 6. A horizontal hand rail 2′ is supported at one end by the connector 10. The planar surface 2a of the handrail 2 lies adjacent the planar surface 104 of the connector 10. As will be appreciated, the provision of complimentarily-shaped internal surfaces of the connectors (10, 60 etc) and outer surfaces of the handrails 2, 2′ ensures the accurate location of the two parts. The other end of the handrail 2′ may be supported against a wall by a connector 16 or by a further connector 10 to a newel post 6, or by connectors 9, 11, 14, 14′ as the case may be.
A bracket 4′ is connected to the handrail 2′ such that the planar surface 41′ of the bracket 4′ lies against the planar surface 2a′ of the handrail 2′. The bracket 4′ is secured to the rail 2′ and banister 3 as described above. The banisters 3 are secured, at their lower ends, to base rails R by brackets 4, 4′ in an identical fashion.
Brackets 4 are secured to the base rail R and the spigots thereof are located in the hollow end of balusters 3, as described above.
The provision of the ‘waist’ 44 in the extension portion 43 of the baluster 4 allows for the deformation of the brackets 4 so that variable inclinations of staircase can be catered for, rather than that equivalent to the angle between the post 3 and the planar surface 41 of the undeformed brackets 4. The pivotal connection between the various connector parts allows for various inclinations to be accommodated. The deformable waist 43′ of brackets 4′ ensures that a landing handrail 2′ which is not perfectly true (i.e. horizontal) can be catered for. Indeed, the waist portion 43 of a bracket 4 formed from ABS allows for a variation in incline in a staircase of about 7°, say from 38° to 45°. A similar variation in incline (i.e. 7° or 3.5° either side of the equilibrium position shown) can be accommodated by the horizontal brackets 4′. Other materials may allow variations in inclination of up to 10°. Variations outside this limit are possible and are within the scope of the present invention.
By using connectors 8 and 9, a turn in a handrail 2′ can be accommodated. Parts 85 and 91 are secured to a newel post 6 by screws extending through respective apertures 89 and 94 into the post 6. The parts 81 supporting the hand rail 2′. As the internal cross section of parts 85 and 91 are not in the form of a major section of a circle, they are free to rotate about the newel post 6, allowing for any angle between the two handrail 2′ parts.
If a run up the stairs is considered too long for safe support by the balusters 3 on their own, a newel post 6 can be placed mid-run with a connector 50″ mounted thereon. A connector 70 can then be used to interconnect two handrail portions 2 to increase stability.
The connector part 50′ will be used if a handrail 2 requires support at a terminal end against a wall.
Typically (when using a newel post 6), a handrail for a staircase SC will be installed by cutting a newel post 6 from a length of rail 2 and mounting it in a connector 8. A first part of a connector 5 will be attached to the newel post 6. The handrail 2 will be cut to length and an end thereof will be inserted into the second part of the connector 5. The support for the other end of the rail 2 will be installed (either on a second newel post 6 or against a wall or other supporting surface) and the rail located between the support and the newel post connector 5. The pivotable nature of the connector 5 will allow the handrail 2 to adopt manifold inclinations. Brackets 4 will then be fitted into the ends of posts 3 and secured therein, as previously explained. The bases of the brackets 4 will then be screwed to the base rail R and handrail 2 at a set distance apart. When the brackets 4 are screwed into the handrail 2, the deformable waist portion 45 will deform, if necessary, to accommodate the angle of inclination between the newel post connector and other end support.
Referring now to
The extension 443 has a narrow waist 444 which widens, at its′ upper end to join a hollow “cup” portion 445
The extension portion 43′ terminates, at its' distal end, to join with a hollow portion 445′.
The brackets 400 and 400′ differ in the positions of the apertures, respectively 442A, 442B, 442C and 442A′, 442B′, 442C′, with respect to the bodies 440 and 440′ and in the angle at which the respective extensions 443, 443′ make with the respective planar surfaces 441 and 441′.
The hollow portions are sized and dimensioned to accept the end of an upright post 3, preferably fabricated from wood. A screw can be screwed through the apertures 442C, 442C′ to secure the banister 3 to the bracket 400, 400′. Screws can be used to secure the bracket 400, 400′ to the rail R, the deformable waist portions 444, 444′ accommodating any variation in the incline of the post 3 relative to the rail 2, 9.
It will be appreciated that using a set of banisters 3, some brackets 4, 4′, 400, 400′ lengths of handrail 2 (to also form the newel posts 6) and some or all of a set of connector parts and connectors 50, 50′, 50″, 60, 70, 8, 9, 10, 11, 12, 14, 14′, 16, 18, a handrail assembly 1 can be constructed for any set of stairs SC. The use of various connectors enables different bends and turns in the staircase SC to be accommodated. Moreover, the use of deformable brackets 4, 4′, 400, 400′ together with pivotable connectors 5 enables different inclines of staircases SC to be accommodated.
Because the ends of the handrails 2, 2′ and newel posts 6 are always hidden within connectors or connector parts, there is no need to accurately and/or precisely cut the rails 2, 2′, 6. Indeed, the assembly 1 of the current invention is substantially ‘de-skilled’ compared with other handrail assemblies. It has been found that on a typical staircase for a straight flight of timber balustrading about 125 saw cuts is required. In contrast, the assembly 1 of the current invention requires just 7.
The connectors and connector parts may be formed from a tough plastics material and may be moulded. They may also be formed from metal. The handrail 2 may be formed from wood or plastics. They may be provided with a sheath, such as veneer.
The brackets 4, 4′ need not have quadrant-like portions. The brackets 4, 4′ may have two or three portions or may be of unitary form and may be formed to form a friction fit within the post. The spigot 46, 46′ need not be cylindrical, it may be square or otherwise shaped in cross-section. The balusters 3 need not be round.
The handrail 2 may have a cross-sectional shape substantially in the form of an ellipse with a minor segment removed, the internal surfaces of the connector parts and connectors having identical cross-sectional form. Other substantially curvilinear forms may be used, the only proviso being that the intended bottom surface is substantially flat and is matched by the surface 41, 41′ of the brackets 4, 4′, 400, 400′ and/or by the internal surfaces of the connectors.
It will be further appreciated that the provision of a flat or planar surface is the easiest to manufacture. Further by providing the matched, preferably flat, surfaces on the components it will ease installation for the do-it-yourself enthusiast and for the professional handrail fitter alike. The provision of matched surfaces ensures that the components are in the correct configuration when inserted and that no rotation of the, say, connector about the end of the rail is possible.
The components of the assembly 1 may be sold as a kit bought off-the-shelf or may be ordered to complete a specific job. Clearly, the provision of the parts of the invention, together with the simple mode of construction will allow both the skilled person and the do-it-yourself enthusiast to simply and effectively install a staircase SC which is functional and attractive.
Number | Date | Country | |
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Parent | 10423585 | Apr 2003 | US |
Child | 12106123 | US |