The present invention relates generally to floor tile systems, such as sport floor systems. More particularly, the present invention relates to an interlocking floor tile having a top surface comprised of multiple levels, such as a bi-level surface.
Numerous types of flooring have been used to create multi-use surfaces for sports, as well as for other purposes. In recent years, the use of modular flooring assemblies made of synthetic materials has grown in popularity. Modular flooring systems generally comprise a series of interlocking tiles that can be permanently installed over a support base or subfloor, such as concrete or wood, or temporarily laid down upon another surface from time to time when needed. These floors and floor systems can be used both indoors or outdoors.
Such synthetic floors are advantageous for several reasons. One reason for the popularity of these types of systems is that they are typically formed of materials that are generally inexpensive and lightweight. Additionally, if one tile becomes damaged, it can be removed and replaced quickly and easily. If the flooring needs to be temporarily removed, the individual tiles making up the floor can easily be detached and stored for subsequent use. Another reason for the popularity of these types of flooring assemblies is that the durable plastics from which they are formed are long-lasting, even in outdoor installations. Also, unlike some other long-lasting alternatives, such as asphalt and concrete, interlocking tiles are generally better at absorbing impact, and there is less risk of injury if a person falls on the synthetic material, as opposed to concrete or asphalt. Moreover, the connections for modular flooring assemblies can be specially engineered to absorb any applied forces, such as lateral forces, which can reduce certain types of injuries from athletic activities. Additionally, these flooring assemblies generally require little maintenance as compared to other flooring, such as wood.
Modular flooring assemblies for outdoor use present certain unique requirements. One of the most important is provision for drainage of water. It will be apparent that water standing on the surface of a polymer floor tile can create a slippery and potentially dangerous condition. To allow drainage of water away from the tiles and prevent a slippery surface, outdoor flooring systems or assemblies generally have a grid-type top surface, rather than a solid surface, and discontinuous upright supports (e.g. upright posts, rather than continuous walls) beneath. A grid surface provides a random or patterned series of openings that allow water to drain down through the tile, while the upright supports provide channels below the tile surface that allow the water to drain away.
Unfortunately, these general design features are somewhat deficient in solving the problems inherent in outdoor modular tiles. For example, challenges related to traction on the top surface still remain. Drops of water can still adhere to the top of the grid surface, creating slippery conditions, notwithstanding the provision for drainage through the tile. Because of surface tension, drops of water can also be suspended in the drainage openings, thus increasing the time that it takes for the tiles within the flooring assembly to dry. Moreover, polymer materials that have adequate strength and durability for use in outdoor sport floors tend to become smooth with age and wear, thus providing less traction for users. Conversely, polymer materials that provide better traction, even with wear (such as those with higher rubber content), generally do not have sufficient strength and durability characteristics for forming such flooring assemblies. Additionally, if the grid openings of the top surface are too large, leaves, tree seeds, and other debris can fall through the openings and clog the drainage pathways. The prior art has not adequately addressed these problems.
It has been recognized that it would be advantageous to provide an improved floor tile for use in flooring assemblies or systems configured particularly for outdoor use that more adequately addresses the problems inherent in prior related floor tiles, such as improved drainage and channeling of water away from the top surface of the floor tile.
It would also be advantageous to provide the outdoor floor tile with improved traction characteristics for users without compromising the strength and durability of the tiles.
It would still further be advantageous to provide the outdoor floor tile with openings that are configured to facilitate adequate and improved water drainage over prior related floor tiles, while also preventing debris from clogging the drainage pathways.
Additional features and advantages of the invention will be apparent from the detailed description which follows, taken in conjunction with the accompanying drawings, which together illustrate, by way of example, features of the invention.
Therefore, in accordance with the invention as embodied and broadly described herein, the present invention features a floor tile having a multiple-level surface configuration, such as a bi-level or tri-level surface configuration. More specifically, the present invention features a synthetic floor tile for use within a floor assembly comprising: (a) a perimeter wall defining a perimeter boundary of the floor tile; (b) a surface contained at least partially within the perimeter wall, the surface comprising multiple levels; and (c) a support structure configured to support the surface.
The present invention also features a synthetic floor tile configured for use with a flooring assembly, the synthetic floor tile comprising: (a) a grid-type top surface, having an upper lattice, and a lower lattice, wherein the lower lattice is oriented generally transverse to the upper lattice, and the upper and lower lattices are integrally formed and provide drainage gaps therethrough, the lower lattice comprising a top surface that is located below a top surface of the upper lattice, so as to draw residual moisture from the top surface of the upper lattice.
The present invention further features a synthetic floor tile comprising: (a) a perimeter wall enclosing a perimeter boundary for the tile; (b) a top surface having an upper lattice that forms a grid extending within the perimeter wall, and a lower lattice, also forming a grid extending within the perimeter wall, the lower lattice being oriented generally transverse to the upper lattice, the upper and lower lattices being integrally formed to provide drainage gaps therethrough.
The present invention still further features an outdoor activity court comprising: (a) a support floor; (b) a plurality of synthetic tiles disposed atop the support floor and interconnected with one another to provide a flooring assembly, the plurality of synthetic tiles comprising: (i) a surface comprising multiple levels integrally formed with one another to provide drainage gaps therethrough; and (ii) a support structure configured to support the surface on the support floor.
The present invention still further features a method for facilitating the removal and drawing of water from a flooring assembly comprising: (a) configuring a plurality of synthetic floor tiles with a surface comprising multiple levels, each being integrally formed with one another to provide drainage gaps therethrough; and (b) facilitating the interconnection of the plurality of synthetic floor tiles to form a flooring assembly.
The present invention will become more fully apparent from the following description and appended claims, taken in conjunction with the accompanying drawings. Understanding that these drawings merely depict exemplary embodiments of the present invention they are, therefore, not to be considered limiting of its scope. It will be readily appreciated that the components of the present invention, as generally described and illustrated in the figures herein, could be arranged and designed in a wide variety of different configurations. Nonetheless, the invention will be described and explained with additional specificity and detail through the use of the accompanying drawings in which:
The following detailed description of exemplary embodiments of the invention makes reference to the accompanying drawings, which form a part hereof and in which are shown, by way of illustration, exemplary embodiments in which the invention may be practiced. While these exemplary embodiments are described in sufficient detail to enable those skilled in the art practice the invention, it should be understood that other embodiments may be realized and that various changes to the invention may be made without departing from the spirit and scope of the present invention. Thus, the following more detailed description of the embodiments of the present invention, as represented in
The following detailed description and exemplary embodiments of the invention will be best understood by reference to the accompanying drawings, wherein the elements and features of the invention are designated by numerals throughout.
The present invention describes various embodiments of a flooring assembly or system comprising a multiple-level surface or surface configuration, such as a bi-level or tri-level surface, or even combinations of these interspaced throughout the floor surface.
The present invention multiple-level surface floor tile provides several advantages over prior related floor tiles. First, a floor tile having a multiple-level surface configuration provides improved water drainage. Due to the staggered surface design, and in accordance with various laws of nature, any water accumulating on the floor tile will fall from the upper surface to one of the lower surfaces, thus leaving the top surface (the contact surface) relatively free from water. This helps to maintain good traction and to prevent slipping. Second, a multiple-level surface configuration is better able to receive or absorb and distribute or otherwise handle lateral forces since these forces may be absorbed and distributed throughout a greater portion along the thickness of the floor tile. Third, the several surfaces may be formed of different material for one or more reasons. For example, since only the contact surface (the uppermost surface receiving contact from a user or object) must comprise good traction and other properties, the lower surfaces out of contact with those using the floor, may be constructed of any type of material and may comprise any type of design.
Each of the above-recited advantages will be apparent in light of the detailed description set forth below, with reference to the accompanying drawings. These advantages are not meant to be limiting in any way. Indeed, one skilled in the art will appreciate that other advantages may be realized, other than those specifically recited herein, upon practicing the present invention.
Modular interlocking floor tiles come in a variety of configurations. Various views of a multiple-level surface floor tile in accordance with one exemplary embodiment of the present invention are shown in
With reference to
As shown, the top of the tile 10 provides a grid surface 12, and the bottom is comprised of a plurality of upstanding supports 14, which gives strength to the tile while keeping its weight low. The tile includes a perimeter wall 16 supporting the top surface and enclosing a perimeter boundary for the tile. A plurality of coupling elements in the form of loop and pin connectors are disposed along the perimeter wall, with loops 18 disposed on two contiguous sides, and pins 20 disposed on the other two contiguous sides. The loop and pin connectors are configured to allow interconnection of the tile with similar adjacent tiles, in a manner that is well known in the art. It is also contemplated that other types of connectors or coupling elements may be used other than those specifically shown herein.
In the exemplary embodiment shown, the floor tile 10 comprises a grid-type top surface 12 having a bi-level surface configuration comprised of first and second surface levels. The first level comprises a lower lattice 24 and the second surface comprises an upper lattice 22, as shown. The lower lattice 24 is oriented generally transverse to the upper lattice 22, so as to provide additional strength to the top surface. The upper and lower lattices 22 and 24 are integrally formed and provide a grid extending within the perimeter wall 16 with drainage gaps 26 therethrough (see
With reference to
In one embodiment, the top surface 28 of the lower lattice 24 is disposed about 0.10 inches below the top surface 29 of the upper lattice 22. The inventors have found this dimension to be a practical and functional dimension, but the tile is not limited to this. In the embodiment depicted in the figures, the upper lattice 22 and lower lattice 24 have a substantially coplanar lower surface 30, with the upper lattice 22 thus comprising a thickness that is about twice that of the lower lattice 24.
The upper lattice 22 comprises elongate structural elements disposed generally diagonally with respect to the perimeter wall 16. The lower lattice 24 comprises elongate structural elements disposed generally parallel to two sides of the perimeter wall 16. The upper lattice 22 comprises two sets of cris-crossing or intersecting structural elements, and the lower lattice 24 also comprises two sets of cris-crossing or intersecting structural elements.
With reference to
The floor tile 10 can be completely integrally formed of a common material in an injection molding process, so as to be structurally strong. Materials that can be used include polypropylene, polyethylene, polyurethane, nylon, etc. In appropriate formulations, these materials can provide adequate strength, durability, and resilience to withstand vigorous use and outdoor weather conditions. Various additives, such as UV inhibitors, colors, etc. can also be added to the polymer material to increase its suitability to outdoor use.
In some aspects, the floor tile 10 can be configured with the upper lattice 22 formed or constructed of a different material than the lower lattice 24, the upright supports 14, and the perimeter wall 16. As noted above, polymer materials that have adequate strength and durability for use in outdoor sport floors, such as polypropylene, can tend to become smooth with age and wear, thus providing less traction for users. Conversely, polymer materials that provide better traction, even with wear (such as those with higher rubber content), generally do not have sufficient strength and durability for forming these tiles. Accordingly, in one embodiment, the upper lattice 22 can be of a more resilient polymer material (e.g. one having a high rubber content) to provide better traction for users. For example, where the lower lattice and the support structure are of relatively rigid polypropylene, the upper lattice can be of a polypropylene copolymer having a higher proportion of rubber-type material (e.g. ethylene). In this embodiment, the lower lattice, upright supports, and perimeter wall are of a first material, and the upper lattice is of a second material having more resilience and providing more traction than the first.
Other material combinations can also be used. Nevertheless, even when the upper lattice 22 is of a material different from the remainder of the tile 10, the tile 10 can be injection molded as an integral unit via a co-injection process. In such a process, two differing materials can be injected into the same mold to form a single item with differing properties. In the example given, the bond between the two different materials is secure in part because the materials are of the same species, allowing the polymers to cross-link across the material boundary. Nevertheless, polymer materials of different species can also be co-injected in the same manner. During injection molding, polymer materials of two different species will also bond because of the high temperatures and the molten state of the injected material.
As shown in
In the embodiment shown, the reinforcement member 140 comprises a protrusion that extends upward from a surface 119 of the loop connector 118 and converges with the perimeter wall 116. The reinforcement member 140, or protrusion, comprises a nonlinear, concave configuration having a radius r. The radius r is typically between 0.01 and 0.02 inches, but may comprise other dimensions depending upon the size of the floor tiles being fitted or coupled together. The reinforcement member 140 may further comprise other configurations, such as a linear protrusion. These may be in the form of an inclined, square, or rectangular protrusion (when viewed from the side as is the reinforcement member of
With specific reference to
As shown, the reinforcement member 150 comprises a nonlinear, curved section having a radius r that extends from the edge surface 154 of the pin connector 120 to a bottom surface 158 of the perimeter wall 116. Other configurations are contemplated, such as one or more linear configurations.
By way of example, and without limitation, the present invention can be described as providing a polymer floor tile for forming an outdoor floor covering. The polymer floor tile generally comprises a grid-type top surface, having multiple levels, such as in the case of a bi-level surface, wherein an upper lattice is operable with a lower lattice. The lower lattice is oriented generally transverse to the upper lattice, and the upper and lower lattices are integrally formed and provide drainage gaps therethrough. The lower lattice has a top surface below a top surface of the upper lattice, so as to draw residual moisture below the top surface of the upper lattice. The tile further includes a support structure, configured to support the top surface on a support surface and provide drainage pathways beneath the top surface.
As another example, the invention can be described as providing a polymer floor tile for an outdoor floor covering. The tile includes a perimeter wall, enclosing a perimeter boundary for the tile, and a top surface, having an upper lattice, forming a grid extending within the perimeter wall, and a lower lattice, forming a grid extending within the perimeter wall, oriented generally transverse to the upper lattice. The upper and lower lattices are integrally formed and provide drainage gaps therethrough. The lower lattice has a top surface below a top surface of the upper lattice, so as to draw residual moisture below the top surface of the upper lattice. The tile further includes loop and pin connector structure, attached to the perimeter wall, configured to allow interconnection of the tile with similar adjacent tiles, and a support structure comprising discontinuous upright supports, configured to support the tile on a support surface and provide drainage pathways beneath the top surface.
As yet another example, the invention can be described as providing an outdoor activity court. The activity court generally comprises a substantially solid subsurface, and a plurality of polymer floor tiles, disposed atop the subsurface, interconnected to provide an activity court. A top surface of each tile includes an upper lattice and a lower lattice oriented generally transverse to the upper lattice. The upper and lower lattices are integrally formed and provide drainage gaps therethrough. The lower lattice has a top surface below a top surface of the upper lattice, so as to draw residual drainage below the top surface of the upper lattice. Each tile further includes a plurality of upright supports, integrally formed with each of the polymer tiles, configured to allow drainage along the subsurface below the top surface of the polymer tiles.
The foregoing detailed description describes the invention with reference to specific exemplary embodiments. However, it will be appreciated that various modifications and changes can be made without departing from the scope of the present invention as set forth in the appended claims. The detailed description and accompanying drawings are to be regarded as merely illustrative, rather than as restrictive, and all such modifications or changes, if any, are intended to fall within the scope of the present invention as described and set forth herein.
More specifically, while illustrative exemplary embodiments of the invention have been described herein, the present invention is not limited to these embodiments, but includes any and all embodiments having modifications, omissions, combinations (e.g., of aspects across various embodiments), adaptations and/or alterations as would be appreciated by those in the art based on the foregoing detailed description. The limitations in the claims are to be interpreted broadly based the language employed in the claims and not limited to examples described in the foregoing detailed description or during the prosecution of the application, which examples are to be construed as non-exclusive. For example, in the present disclosure, the term “preferably” is non-exclusive where it is intended to mean “preferably, but not limited to.” Any steps recited in any method or process claims may be executed in any order and are not limited to the order presented in the claims. Means-plus-function or step-plus-function limitations will only be employed where for a specific claim limitation all of the following conditions are present in that limitation: a) “means for” or “step for” is expressly recited; and b) a corresponding function is expressly recited. The structure, material or acts that support the means-plus function are expressly recited in the description herein. Accordingly, the scope of the invention should be determined solely by the appended claims and their legal equivalents, rather than by the descriptions and examples given above.
This application relates to U.S. Provisional Patent Application No. 60/616,885, filed Oct. 6, 2004, and entitled, “Tile with Bi-Level Grid Surface,” which is incorporated by reference in its entirety herein.
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