The present invention relates generally to a pedestrian barrier and barrier system, and to methods for the use and assembly thereof.
One challenge, faced during the construction of roads, buildings, and other similar structures, is the need to safely perform the work while allowing traffic and pedestrians access to surrounding facilities. In an urban environment, this may mean providing for pedestrian traffic adjacent to such construction. It may also be important to allow vehicle traffic continued access to roadways undergoing or adjacent to such construction. In each of these situations, the pedestrians or vehicles may need to be guided onto portions of the roadway which may not normally be used for pedestrian or vehicle traffic, such as the area used for parking or opposing vehicle lanes. To safely do this, vehicles and pedestrians need to be channeled and guided into and onto the new pathway. Furthermore, in instances where pedestrians and vehicles are using adjacent pathways, the pedestrians and vehicles need to be separated to ensure that there are no pedestrian/vehicle encounters and conflicts.
A variety of devices have been used to provide pedestrian/vehicle separation, including cones, drums, and stanchions connected with chains or ropes. One system that provides effective separation is a continuous line of barriers known as Longitudinal Channelizing Devices (LCDs). LCDs provide a continuous line of demarcation between where the vehicles should travel and where the pedestrians should walk. A typical LCD may be configured as a short barrier that may be connected to an adjacent barrier, via a pin, or similar type of connector. Additional barriers may be added to define a continuous barrier system. The connection between barriers ensures that the barriers remain connected should they be bumped or jostled. Compliance at the joints between adjacent barriers may allow the barrier system to follow a curved or curvilinear path. Typically, it is desirable to provide LCDs with high visibility, for example by configuring the LCDs with bright, contrasting colors, such as orange and white. To maintain their position, LCDs may be ballasted with water or sand.
LCDs may be used in situations where there is vehicular traffic on one side and pedestrians on the other, or with vehicular traffic on both sides. In situations where pedestrians are passing along one side of the barrier, the barrier needs to be designed to accommodate the diverse needs of pedestrians, as called for in the Americans with Disabilities Act Accessibility Guidelines (ADAAG) and the Manual on Uniform Traffic Control Devices (MUTCD). For example, an individual who is sight impaired may need a continuous hand rail along the top of the barrier, regardless of whether the barrier system follows a straight or curvilinear path.
A sight impaired person who uses a cane may also require a continuous vertical surface near the ground, again regardless of whether the barrier system follows a straight or curvilinear path. For example, the MUTCD calls for continuous bottom and top surfaces that are detectable to users of long canes. The bottom surface needs to be no higher than 2 inches above the ground and the top surface needs to be no lower than 32 inches above the ground. The MUTCD also states that the barrier needs to provide a continuous vertical surface up to at least 6 inches above the ground.
Some barriers are configured with an internal steel frame, and/or with an external steel cables and steel connector pins. Such configurations may be expensive to manufacture. Some barriers may also have limited compliance at the joint between adjacent barriers, which precludes use of the system along a curved pathway, especially where the curvature is defined by a small radius.
Other devices may have better joint compliance, but fail to provide continuity along a top surface, or to provide to provide a continuous vertical surface near the ground, when deployed in an articulated configuration, for example along a curvilinear path. Other barriers may provide a continuous upper surface to act as a hand guide, as well as a continuous vertical surface near the ground, but are not self-ballasted, meaning the barriers may be easily displaced once deployed. Some barriers may be ballasted with sand, but are difficult to empty after use, and barriers relying on sand bags for ballast are messy and subject to tampering.
The present invention is defined by the following claims, and nothing in this section should be considered to be a limitation on those claims.
In one aspect, one embodiment of a pedestrian barrier system includes first and second barriers each having first and second sides, first and second ends, and an upper hand guide positioned along the first side. The first end of the first barrier is pivotally connected to the second end of the second barrier. The first and second barriers are pivotable between at least a linear configuration wherein the first sides of the first and second barriers are co-planar and an orthogonal configuration wherein the first sides of the first and second barriers are perpendicular. The upper hand guides of the first and second barriers are continuous when the first and second barriers are in the linear and orthogonal configurations. Various methods of using and assembling the barrier system are also provided.
In another aspect, one embodiment of a method of assembling a pedestrian barrier system includes pivotally connecting first and second ends of adjacent barriers, wherein the pivotally connected adjacent barriers are pivotable between at least a linear configuration wherein the first sides of the pivotally connected barriers are co-planar and an orthogonal configuration wherein the first sides of the pivotally connected barriers are perpendicular, and wherein the upper hand guide of the pivotally connected barriers are continuous when the pivotally connected barriers are in either of the linear and orthogonal configurations. The method also may include filling the barriers with a fluid.
In another aspect, one embodiment of a pedestrian barrier includes a body defining an internal cavity adapted to hold a fluid and a filling port communicating with the internal cavity. The body includes first and second sides, first and second ends, and an upper hand guide positioned along the first side. The upper hand guide is continuous between the first and second ends. The first side is longer than the second side. The first end of the body includes a first pivotal connection arrangement and the second end of the body includes a second pivotal connection arrangement different than the first pivotal arrangement. The first side of body includes a flat, vertical surface extending between about 2 and about 6 inches from a ground engaging portion of the body, wherein the flat, vertical surface is continuous between the first and second ends.
The various embodiments of the barrier, barrier system and methods of using and assembling the barrier system, provide significant advantages over other barriers and barrier systems. For example and without limitation, the barriers may be arranged in linear and non-linear configurations while maintaining continuous upper hand rails and lower flat portions. In addition, the barriers may be filled with a fluid ballast, which may be easily and quickly supplied and withdrawn, such that they are capable of withstanding significant impacts and are not easily displaced or tampered with. The pivotal connection arrangements provide for easy and quick assembly, while the mating upper rail and bottom recess provide for easy and secure stacking of the barriers for transportation and storage.
The foregoing paragraphs have been provided by way of general introduction, and are not intended to limit the scope of the following claims. The various preferred embodiments, together with further advantages, will be best understood by reference to the following detailed description taken in conjunction with the accompanying drawings.
It should be understood that the term “longitudinal,” as used herein means of or relating to length or the lengthwise direction 60 of a barrier and/or barrier system. The term “lateral,” as used herein, means directed toward or running perpendicular to the side of the barrier, in a sideways direction 70 or side-to-side of the barrier. The term “coupled” means connected to or engaged with, whether directly or indirectly, for example with an intervening member, and does not require the engagement to be fixed or permanent, although it may be fixed or permanent, and includes both mechanical and electrical connection. It should be understood that the use of numerical terms “first,” “second” and “third” as used herein does not refer to any particular sequence or order of components; for example “first” and “second” barriers may refer to any sequence of such barriers, and is not limited to the first and second adjacent barriers sections unless otherwise specified. The term “continuous” means substantially uninterrupted, and with any gaps, breaks or other discontinuities in the feature or component so described being 2 inches or less. The term curvilinear refers to a non-linear array, whether configured with linear segments that are not axially aligned, or with curved segments.
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Fill ports 2 are provided in the top wall 43 of the body 1 to allow water, or other fluid, to be added to an internal cavity of the body as ballast. The cavity may be defined by the walls 40, 41, 4342, 44 and 45. Drain ports 6 are provided in one or more of a non-traffic wall 40, traffic wall 41 or bottom wall to allow the barrier 1 to be drained of any ballast that has been added to the internal cavity. Both the fill ports 2 and drain ports 6 are provided with closures or plugs to seal the barrier 1 and maintain the level of fluid as ballast.
Although in most cases the ballast fluid will be water, in other applications, for instance in cold weather applications, the fluid may be a mixture of water and common salts, such as sodium chloride, magnesium chloride or potassium acetate, or may include other various anti-freeze ingredients. Water is the most effective form of ballast as it is readily available and it can easily be drained and disposed of when the barriers need to be moved. In one embodiment, the ballast includes between 80 and 85 gallons of water or other fluid, although some embodiments may have more or less ballast, depending upon the application. In one embodiment, the empty weight of the barrier 1 is between 25 and 50 lbs, making it easy for one person to move, however other embodiments may have more or less weight. One embodiment of the barrier is made from linear low density polyethylene, although other plastics, polymeric materials, or composite materials may be used.
The body is configured with a top knuckle 46 defining one end of the body and a bottom knuckle 47 defining an opposite end of the body. The knuckles allow adjacent barriers 1 to be placed next to each other and joined to form a compliant joint. In one embodiment, adjacent barriers 1 are joined together by way of first and second connector arrangements, configured in one embodiment as a pin 4 in top knuckle 46 and a socket 3 in bottom knuckle 47. It should be understood that the pin and socket may be reversed, with the pin extending upwardly from the bottom knuckle and the socket formed in the top knuckle. In one embodiment an end portion of the pin 4 is tapered along at least one side, for example having a taper angle α. The taper facilitates the assembly of the adjacent barriers in a barrier system, as is shown in
The pivotal connection also allows for adjacent barriers to be more easily pulled apart when they are empty of ballast. This is done by pulling the barriers in a longitudinal direction 60, with little or no upwards force being required to separate the barriers due to the angle of the pin surface. The angle α in one embodiment is preferably between 10 and 20 degrees, and more preferably about 15 degrees. The bore of socket 3 matches the angle of the pin 4, as shown by the hidden lines in
Fork lift ports 5 are provided in the body to allow the barrier 1 to be easily lifted and moved with a fork lift, regardless of whether the barrier is full of ballast or empty. The height of fork lift ports 5 is noted with dimension 11. Next to fork lift ports 5 on each end of non-traffic face 40 are stacking cutouts or recesses 51, the height of which are noted by dimension 49. Dimensions 11 and 49 are preferably less than or equal to 2 inches to meet the requirements of the ADAAG and MUTCD.
Through ports 7 are provided in the body to join the non-traffic wall or side 40 and the traffic wall or side 41 together, providing extra strength and structure to barrier 1. Through ports 7 also may be used by a fork lift to move the barriers, particularly when the barriers are empty of ballast. For example, the through ports 7 may be made with a rectangular shape as shown in
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An upper hand guide 10 is provided on the body at the juncture of top wall 43 and non-traffic wall or side 40, to allow pedestrians to be supported and guided by the barrier 1. The height of the hand guide 10, and in particular the upper surface thereof, relative to a bottom ground engaging surface 42 is delineated by guide height 48. Although a variety of barrier designs are possible, depending upon the applications, the barrier 1, and height of the upper surface of the hand guide 10, is preferably no less than 32 inches from the ground, or a ground engaging surface 42 of the body, in order to conform to the requirements of the MUTCD. In one embodiment, the dimension of the hand guide 10 is greater or equal to 32 inches and less than or equal to 35 inches.
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Ideally the pedestrian side edge of the hand guide at the top of the barrier is in the same vertical plane as a cane guide portion 61 which is close to the ground. In one embodiment, the non-traffic wall/side is substantially planar, e.g., a vertical plane, and extends from a bottom edge, defined by one or more of the ports 5, the bottom wall 42 or the top of recess 51, to the upper hand guide. The cane guide portion is defined by a flat, vertical surface extending from 2 inches or less to at least 6 inches or more from the ground engaging portion 42 of the body of the barrier. It should be understood that the cane guide portion may extend upwardly higher than 6 inches. The cane guide portion 61, or flat, vertical surface is continuous between the first and second ends of the body of the barrier and is continuous in the longitudinal direction 60 along a plurality of barriers pivotally connected in a barrier system.
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Although the present invention has been described with reference to preferred embodiments, those skilled in the art will recognize that changes may be made in form and detail without departing from the spirit and scope of the invention. As such, it is intended that the foregoing detailed description be regarded as illustrative rather than limiting and that it is the appended claims, including all equivalents thereof, which are intended to define the scope of the invention.
This application claims the benefit of U.S. Provisional Application No. 62/110,073, filed Jan. 30, 2015, the entire disclosure of which is hereby incorporated herein by reference.
Number | Date | Country | |
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62110073 | Jan 2015 | US |