This disclosure relates to guardrail systems. More specifically, this disclosure relates to guardrail systems comprising a guardrail base with a rail mount for securely fixing a position of a guardrail and a base extension for further fixing a position of the guardrail base.
A guardrail system can help maintain workers and materials within a safe work area, including when the work area is elevated such as on a surface of a roof of a building. If an object or a person falls on, leans against, pushes, or otherwise contacts the guardrail from within the work area, a force resulting from that contact can in some cases be enough to cause rotation of the guardrail sufficient to allow the object or person to trespass the guardrail system, especially when the guardrail system is not positively secured to the aforementioned surface with fasteners. Furthermore, it can be helpful for guardrail posts to be easily inserted and yet also positively secured in guardrail bases.
It is to be understood that this summary is not an extensive overview of the disclosure. This summary is exemplary and not restrictive, and it is intended to neither identify key or critical elements of the disclosure nor delineate the scope thereof. The sole purpose of this summary is to explain and exemplify certain concepts of the disclosure as an introduction to the following complete and extensive detailed description.
In one aspect, disclosed is a guardrail base comprising: a base body comprising a first foot, a second foot separate from and distal from the first foot, and a raised portion between the first foot and the second foot; and a rail mount comprising a fixed clamp body secured to the base body and a floating clamp body offset from and coupled to the fixed clamp body.
In a further aspect, disclosed is a guardrail system comprising: a guardrail base defining an effective support length; and a base extension lockably engaged with the guardrail base and extending the effective support length, any rotation of the guardrail base resulting in lifting and rotation of the base extension, a lower surface of the base extension facing an upper surface of the guardrail base.
In yet another aspect, disclosed is a method for installing a guardrail system, the method comprising: placing a guardrail base on a surface, the guardrail base comprising: a base body; and a rail mount comprising a fixed clamp body secured to the base body and a floating clamp body coupled to the fixed clamp body; inserting a post of a guardrail into a post bore defined by the rail mount of the guardrail base; and tightening the rail mount about the post to positively fix an angle of the post with respect to the guardrail base.
Various implementations described in the present disclosure may comprise additional systems, methods, features, and advantages, which may not necessarily be expressly disclosed herein but will be apparent to one of ordinary skill in the art upon examination of the following detailed description and accompanying drawings. It is intended that all such systems, methods, features, and advantages be included within the present disclosure and protected by the accompanying claims. The features and advantages of such implementations may be realized and obtained by means of the systems, methods, features particularly pointed out in the appended claims. These and other features will become more fully apparent from the following description and appended claims, or may be learned by the practice of such exemplary implementations as set forth hereinafter.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate several aspects of the disclosure and together with the description, serve to explain various principles of the disclosure. The drawings are not necessarily drawn to scale. Corresponding features and components throughout the figures may be designated by matching reference characters for the sake of consistency and clarity.
The present disclosure can be understood more readily by reference to the following detailed description, examples, drawings, and claims, and their previous and following description. However, before the present devices, systems, and/or methods are disclosed and described, it is to be understood that this disclosure is not limited to the specific devices, systems, and/or methods disclosed unless otherwise specified, as such can, of course, vary. It is also to be understood that the terminology used herein is for the purpose of describing particular aspects only and is not intended to be limiting.
The following description is provided as an enabling teaching of the present devices, systems, and/or methods in their best, currently known aspect. To this end, those skilled in the relevant art will recognize and appreciate that many changes can be made to the various aspects described herein, while still obtaining the beneficial results of the present disclosure. It will also be apparent that some of the desired benefits of the present disclosure can be obtained by selecting some of the features of the present disclosure without utilizing other features. Accordingly, those who work in the art will recognize that many modifications and adaptations to the present disclosure are possible and can even be desirable in certain circumstances and are a part of the present disclosure. Thus, the following description is provided as illustrative of the principles of the present disclosure and not in limitation thereof.
As used throughout, the singular forms “a,” “an” and “the” include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to a quantity of one of a particular element can comprise two or more such elements unless the context indicates otherwise. In addition, any of the elements described herein can be a first such element, a second such element, and so forth (e.g., a first widget and a second widget, even if only a “widget” is referenced).
Ranges can be expressed herein as from “about” one particular value, and/or to “about” another particular value. When such a range is expressed, another aspect comprises from the one particular value and/or to the other particular value. Similarly, when values are expressed as approximations, by use of the antecedent “about” or “substantially,” it will be understood that the particular value forms another aspect. It will be further understood that the endpoints of each of the ranges are significant both in relation to the other endpoint, and independently of the other endpoint.
For purposes of the current disclosure, a material property or dimension measuring about X or substantially X on a particular measurement scale measures within a range between X plus an industry-standard upper tolerance for the specified measurement and X minus an industry-standard lower tolerance for the specified measurement. Because tolerances can vary between different materials, processes and between different models, the tolerance for a particular measurement of a particular component can fall within a range of tolerances.
As used herein, the terms “optional” or “optionally” mean that the subsequently described event or circumstance may or may not occur, and that the description comprises instances where said event or circumstance occurs and instances where it does not.
The word “or” as used herein means any one member of a particular list and also comprises any combination of members of that list. The phrase “at least one of A and B” as used herein means “only A, only B, or both A and B”; while the phrase “one of A and B” means “A or B.”
To simplify the description of various elements disclosed herein, the conventions of “left,” “right,” “front,” “rear,” “top,” “bottom,” “upper,” “lower,” “inside,” “outside,” “inboard,” “outboard,” “horizontal,” and/or “vertical” may be referenced. Unless stated otherwise, “front” describes that end of a guardrail system 80 (shown in
The guardrail system 80 or other disclosed structure can also be described on the basis of a coordinate axis of X-Y-Z directions shown in one or more of the figures. An X-axis direction can be referred to as a left-right or horizontal direction. For example, as shown in
A Y-axis direction is orthogonal to the X-axis direction (left-right direction) and a Z-axis direction (upper-lower direction) and can also be referred to as a front-rear direction or a transverse direction or a length direction of a guardrail base 100 (shown in
An upper-lower direction is the Z-axis direction, which is orthogonal to the X-axis direction and to the Y-axis direction and typically coincides with a height of the guardrail system 80. For example, a direction along which a post 92 (shown in
In one aspect, a guardrail system and associated methods, systems, devices, and various apparatuses are disclosed herein. In some aspects, the guardrail system can comprise a guardrail base. In some aspects, the guardrail system can comprise a base extension.
Referring to
In some aspects, the guardrail base 100 need not be secured to the structure 50 with fasteners to withstand the aforementioned force, the guardrail base 100 and any other portions of the guardrail system 80 can be easily set up on, adjusted about, and broken down as desired from the structure 50 without penetrating the surface 51 of the structure 50. More specifically, as shown, the guardrail base 100 can be configured to be placed on the surface 51 without fasteners attaching it to the surface 51. Penetration of the surface 51 by, for example, the forming of holes in the surface 51, can be undesirable. As shown, the guardrail base 100 need not reach, much less contact, the edge 55 of the structure 50 to be effective.
The guardrail system 80 can comprise the aforementioned guardrail base 100 and the guardrail 90, which can be received within and secured by the guardrail base 100. The guardrail 90 can comprise the posts 92 (also shown as posts 92a,b,c, with post 92c shown in
The guardrail 90 can comprise cross posts such as upper cross posts 94 and lower cross posts 96. Each of the cross posts 94,96 can extend from the posts 92a,b of each guardrail 90. The cross posts 94,96 can be oriented horizontally or otherwise angled with respect to the posts 92a,b and with respect to a vertical orientation. In some aspects, a third post 92c (shown in
The guardrail base 100 can comprise a first foot cover 355 configured to cover at least a portion of the first foot 305, and a second foot cover 356 configured to cover at least a portion of the second foot 306. In one aspect, the first foot cover 355 and the second foot cover 356 can be formed from an impact-resistant and/or slip-resistant material such as, for example and without limitation, rubber or silicone. The first foot cover 355 and the second foot cover 356 can cover at least a portion of the bottom surface 112 of the base body 110 to prevent or reduce damage to the base body 110 or to the surface 51 (shown in
In one aspect, at least one bore 1060 (shown in
The rail mount 120 can comprise a fixed clamp body 320a, which can be secured to the base body 110, and a floating clamp body 320b, which can be offset from and coupled to the fixed clamp body 320a. The fixed clamp body 320a can be secured to the base body 110 with a fastener or a fastening material. In some aspects, the fastener or the fastening material can be a weldment formed by welding. In some aspects, the fastener or the fastening material can comprise a threaded or pinned connection. In some aspects, as shown, the fixed claim body 320a can be received within and interlock with the base body 110 to facilitate a connection therebetween. More specifically, the base body 110 can define an opening 618 (shown also in
As will be described in further detail below, the floating clamp body 320b can be coupled to the fixed clamp body 320a with one or more fastening assemblies 390a,b, and the floating clamp body 320b and the fixed clamp body 320a can together define the post bores 380a,b,c.
As shown, the rail mount 120 can positively fix an angle 671 of an axis 91 of a post 92 of the guardrail 90 with respect to the guardrail base 100 and an angle 672 of the axis 91 with respect to the horizontal. By positively fixing the angles 671,672, the rail mount 120 can prevent rocking of the post 92 about any one or more axes by clamping tightly an outside surface of the post 92 with walls of the fixed clamp body 320a and the floating clamp body 320b. The angles 671,672 can thereby be maintained and the guardrail 90 can thereby remain solidly fixed in position with respect to the surface 51 (shown in
The connecting portions 430a,b of each of the fixed clamp body 320a and the floating clamp body 320b can define openings 438a,b, which can be bores, sized and otherwise configured to receive the fastening assembles 390a,b and, more specifically, the fasteners 710. In some aspects, one or more of the openings 438a,b can define a circular shape, which can allow free rotation of a portion of the fastening assembles 390a,b such as, for example and without limitation, the fasteners 710. In some aspects, one or more of the openings 438a,b can define a non-circular shape, which can fix a rotational orientation of a portion of the fastening assembles 390a,b such as, for example and without limitation, nuts 730. Locking a rotational orientation of a first portion of the fastening assembles 390a,b while allowing a second portion of the fastening assembles 390a,b to rotate can facilitate engagement of mating threads and tightening of the fastening assembles 390a,b thereby. Locking an angular or rotational orientation of the nut 730 by defining a matching shape in at least one of the clamp bodies 320a,b can eliminate the need for a separate fastener or fastening connection (e.g., a weldment) to lock the orientation. In some aspects, as shown, a center of each of the openings such as the openings 438b can be positioned halfway between a bottom end and a top end of the main portion 740b of the floating clamp body 320b. This can facilitate a secure grip on the post 92 (shown in
The fastener 710, which can be a shafted fastener and can comprise or define external threading as shown, can comprise a head 712 and a shaft 714 extending from the head 712. The head 712 can define a polygonal shape such as that of a hexagon to facilitate tightening of the fastening assembles 390a,b with a tool defining a matching shape (e.g., a hex wrench or socket). As shown, the head 712 of each of the fasteners 710 can be positioned outside the fixed clamp body 320a with respect to a space between the fixed clamp body 320a and the floating clamp body 320b, and the shaft 714 of each of the fasteners 710 can extend through one of the fixed clamp body 320a and the floating clamp body 320b and into the space between the fixed clamp body 320a and the floating clamp body 320b. The shaft 714 can define a circular cross-section and can extend through the fixed clamp body 320a.
One or more of the spring elements 720 can be positioned between the fixed clamp body 320a and the floating clamp body 320b. In some aspects, the spring element 720 can be a spring washer. More specifically, the spring element 720 can be a Belleville washer, which is a type of spring washer defining conical end surfaces. In some aspects, the fastening assemblies 390a,b can comprise a single spring element 720. In some aspects, the fastening assemblies 390a,b can comprise a plurality of spring elements 720. In some aspects, as shown, the fastening assemblies 390a,b can comprise an even number of spring elements 720, and the spring elements 720 can be arranged in pairs, in which case each spring element 720 of the pair can be opposing, i.e., can face in opposite directions. For example, as shown in
One or more of the nuts 730, each of which can in some aspects be a spacer, can comprise or define internal threading as shown and can comprise a body 732 (in the case of either a nut 730a without a flange or a flanged nut 730b) and a flange 734 extending from the body 732 (in the case of the flanged nut 730b). More specifically, one or more of the fastening assemblies 390a,b can comprise at least one of the nuts 730a and at least one of the nuts 730b. The body 732 of each nut 730 can define a polygonal shape such as that of a hexagon to facilitate tightening of the fastening assembles 390a,b with a tool. As shown, the flange 734 of each of the nuts 730 can be positioned outside the floating clamp body 320b with respect to a space between the fixed clamp body 320a and the floating clamp body 320b, and the body 732 of each of the nuts 730 can extend through or at least into one of the fixed clamp body 320a and the floating clamp body 320b and into the space between the fixed clamp body 320a and the floating clamp body 320b. Positioning of the flange 734 outside the floating clamp body 320b can facilitate tightening of the rail mount 120 in that tightening of the fastening assemblies 390a,b can bring the fixed clamp body 320a and the floating clamp body 320b closer to each other. As shown, the body 732 of each of the nuts 730 can extend through the floating clamp body 320b. One or more of the nuts 730 can be positioned outside the floating clamp body 320b with respect to a space between the fixed clamp body 320a and the floating clamp body 320b. An axis of the nut 730a can be aligned with an axis of the nut 730b or the axis of any other component of the fastening assemblies 390a,b or the fastening axes 701a,b. The nut 730a can be positioned adjacent to the nut 730b or any other component of the fastening assemblies 390a,b, and the nut 730a can be configured to tighten against the nut 730b to lock the angular orientation of each of the nuts 730a,b as well as the corresponding fastening assembly 390a,b.
In some aspects, one or more of the fastener 710 and the nut 730 of the fastening assembly 390a,b can comprise fastening elements other than threading or in addition to threading. For example and without limitation, the fastener 710 or the fastening assemblies 390a,b can be tightenable with a cam structure such as when the fastening assembly 390a,b comprises a cam-lock and/or lever fastener such as, for example and without limitation, that which is used to secure a quick-connect bicycle wheel to a front fork or a rear fork of a bicycle frame.
The rail mount 120 and, more specifically, each of the fixed clamp body 320a and the floating clamp body 320b can define an offset distance 907 therebetween to ensure that the fastening assemblies 390a,b of the rail mount 120 can be tightened as much as needed or desired to secure the posts 92a,b,c or to limit tightening to a certain level of tightening (by configuring the fixed clamp body 320a and the floating clamp body 320b to touch at a point corresponding to that level, for example).
The base extension 1000, which can define a centerline 1001 and can align with the centerline 401 of the guardrail base 100, can comprise a base extension body 1010 and can define a first end 1005 and a second end 1006. The second end 1006 can define a foot 1050 and can be sized to receive or be covered by a cover such as one of the foot covers 355,356, which can function as the foot covers 355,356 optionally covering the feet 305,306 of the guardrail base 100 (and is shown in
In some aspects, at least one cutout 1008 can be defined in a portion of the base extension 1000 and, more specifically, the base extension body 1010. As shown, the cutouts 1008 can be defined between the first end 1005 and the second end 1006. The cutout 1008 can facilitate compact and stable stacking or hanging of a plurality of base extensions 1000 and/or can facilitate carrying of the guardrail base 100. The cutouts 1008 can further reduce the weight of the base extension 1000 while maintaining its overall size. As shown, each of the base extension body 1010 and any other portion of the base extension 1000 can define radii at outside corners to avoid sharp points on portions of the base extension 1000.
The base extension 1000, which can be planar as shown, can define a connector or tab 1020 and an engagement opening 1028. The tab 1020 can be formed integrally with the base extension body 1010 of the base extension 1000 and extend from the first end 1005 thereof. With or without the tab 1020, the base extension 1000 can define the engagement opening 1028 proximate to the first end 1005, and the engagement opening 1028 can be sized and otherwise configured to receive the tab 3100 of the guardrail base 100. The engagement opening 1028 can be sized and otherwise configured to lockably engage the tab 3100. In some aspects, the tab 1020 can define the engagement opening 1028. The tab 1020 of the base extension 1000 can define a width 1027 measuring less than an overall width 1007 of the base extension 1000. The tab 1020 can extend a distance 1029 from a remaining portion of the base extension body 1010 in the direction of the centerline 1001.
Based on the effective support length 1110a, the guardrail base 100 can by itself resist the aforementioned lifting and rotation due its own weight and size. When engaged with the guardrail base 100, the base extension 1000 can thereby extend the effective support length 1110, and a horizontal load acting on the guardrail 90 (shown in
As shown, the base extension 1000 can be engaged with the guardrail base 100 by inserting the tab 1020 of the base extension 1000 into the tab surround opening 3108 of the guardrail base 100, including by rotating the base extension 1000 with respect to the guardrail base 100 by a rotation angle 1107 as necessary. By requiring rotation of the base extension 1000 with respect to the guardrail base 100 during assembly of the base extension 1000 to the guardrail base 100, shifting of the base extension 1000 with respect to the guardrail base 100 after assembly (i.e., when both the base extension 1000 to the guardrail base 100 are in contact with the surface 51) can be prevented.
The guardrail system 80 and any component thereof such as, for example and without limitation, the guardrail base 100 and the base extension 1000 and any components thereof can be fabricated or otherwise formed from a metallic material such as, for example and without limitation, steel. The same components can be fabricated using any one or more of a variety of methods such as, for example and without limitation, laser cutting, stamping, three-dimensional printing, and bending. When welded, the components can be joined using any appropriate welding methods or other fastening methods or fasteners as desired.
A method for installing the guardrail system 80 can comprise placing the guardrail base 100 on the surface 51. The method can comprise inserting one or more of the posts 92a,b,c of the guardrail or guardrails 90 into the respective post bores 380a,b,c defined by the rail mount 120 of the guardrail base 100. The method can comprise tightening the rail mount 120 about the one or more posts 92a,b,c to positively fix an angle such as the angles 671,672 of the one or more posts 92a,b,c with respect to the guardrail base 100. The method can comprise positioning a second end 106 of the guardrail base 100 closer to the hazard to be avoided by the guardrail system 80.
The method step of tightening the rail mount 120 about the one or more posts 92a,b,c can comprise tightening the one or more fastening assemblies 390a,b extending from or through the fixed clamp body 320a to the floating clamp body 320b to reduce the offset distance 907 therebetween. The method step of tightening the rail mount 120 about the post 92a,b,c can comprise compressing a spring element 720 positioned between the fixed clamp body 320a and the floating clamp body 320b. The method step of inserting the post 92a,b,c of the guardrail 90 into the post bore 380a,b,c can comprise inserting the post 92a,b,c of the guardrail 90 into the post bore 380a,b,c with the fastening assemblies 390a,b tightened but with the spring element 720 in an uncompressed condition. The method step of tightening the rail mount 120 about the post 92a,b,c can comprise reducing the offset distance 907 defined between the fixed clamp body 320a and the floating clamp body 320b.
One should note that conditional language, such as, among others, “can,” “could,” “might,” or “may,” unless specifically stated otherwise, or otherwise understood within the context as used, is generally intended to convey that certain aspects include, while other aspects do not include, certain features, elements and/or steps. Thus, such conditional language is not generally intended to imply that features, elements and/or steps are in any way required for one or more particular aspects or that one or more particular aspects necessarily comprise logic for deciding, with or without user input or prompting, whether these features, elements and/or steps are included or are to be performed in any particular aspect.
It should be emphasized that the above-described aspects are merely possible examples of implementations, merely set forth for a clear understanding of the principles of the present disclosure. Any process descriptions or blocks in flow diagrams should be understood as representing modules, segments, or portions of code which comprise one or more executable instructions for implementing specific logical functions or steps in the process, and alternate implementations are included in which functions may not be included or executed at all, may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present disclosure. Many variations and modifications may be made to the above-described aspect(s) without departing substantially from the spirit and principles of the present disclosure. Further, the scope of the present disclosure is intended to cover any and all combinations and sub-combinations of all elements, features, and aspects discussed above. All such modifications and variations are intended to be included herein within the scope of the present disclosure, and all possible claims to individual aspects or combinations of elements or steps are intended to be supported by the present disclosure.
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