The following description relates to forming a transition between two surfaces of different elevation.
Two surfaces of different elevation are commonly found in the environment. For example, pairs of lower and upper steps can serve as a basis for a staircase, a sidewalk may be raised relative to a street may by a curb, a boxing ring may be lifted off of a ground floor by vertical supports, and so forth. A mechanical structure can aid a person, animal, or object in moving from a lower of the two surfaces to an upper of the two surfaces.
In some aspects of what is described here, a mat is disclosed for forming a transition between two surfaces of different elevation. The mat may be configurable into a border that can be disposed against a side of a spring floor used for athletic competitions (e.g., cheerleading, gymnastics, etc.). Other applications, however, possible (e.g., transitions for concert stages, speaking podiums, etc.). In some instances, the mat may provide an inclined wall leading from a lower of the two surfaces to an upper of the two surfaces (or vice versa). The mat may also have an outer carpeted layer that can be selected to provide cosmetic features (e.g., color, texture, pattern, etc.) that aesthetically pleasing for an intended application. For example, a spring floor may have a black, carpeted surface that serves as a working surface for athletic activities. The mat may be configured with a black carpeted outer layer to match that of the spring floor, thereby provide an aesthetically-pleasing transition to the spring floor from a ground floor supporting the spring floor.
In some implementations, the mat includes a carpeted layer secured to a foam layer. The foam layer includes first, second, third and fourth sides that define a perimeter of the foam layer. The foam layer also includes first and second channels extending in-plane through the foam layer from the first side to the second side. The first and second channels are configured to allow the mat to fold around a first folding axis into a folded position. The foam layer additionally includes relief cuts extending in-plane through the foam layer from the third side to the fourth side. The relief cuts are configured to allow the mat to fold around a second folding axis into a rolled position. A fifth side of the foam layer is mated to the carpeted layer, and a sixth side of the foam layer defines an interior boundary of the mat when the mat is in the folded position.
With this configuration, the mat may allow a user to rapidly convert the mat from a stored position (e.g., the rolled position, a flat position, etc.) into the folded position. The configuration may also allow the user to quickly set up long, perimeter installations of the mat. For example, for a rectangular spring floor, the user may be able to set up four instances of the mat (i.e., one instance for each side of the spring floor) versus conventional mechanical assemblies, which may require up to twenty-three individual assemblies. The configuration may also allow a smoother transition from the mat to the lower of the two surfaces, and as such, may eliminate (or substantially reduce) trip or catch hazards commonly to conventional mechanical assemblies. Such assemblies often include raised edges where they meet the lower of the two surfaces.
Now referring to
The example mat 100 includes a carpeted layer 102 secured to a foam layer 104. The carpeted layer 102 may be formed of a woven fabric suitable for persons, animals, and objects to contact and traverse the carpeted layer 102 (e.g., by walking on, rolling on, etc.). In some instances, the woven fabric is adapted to couple to a hook and loop fastener (e.g., a strap, tape, etc.) upon contact with the hook and loop fastener. The foamed layer may be an open or closed cellular material formed of polyethylene, cross-linked polyethylene, polyurethane, reticulated polyurethane, latex rubber, neoprene rubber, or other type of material. For example, the foam layer 104 may be a closed cellular material formed of cross-linked polyethylene. In some instances, the foam layer 104 includes a plurality sub-layers (e.g., two sub-layers, three sub-layers, etc.). The plurality of sub-layers may be formed of the same material, or alternately, one or more of the sub-layers in the plurality of sub-layers may be formed of different materials. For example, the plurality of sub-layers may include two sub-layers, each formed of different materials to engineer a compliance of the example mat 100. The compliance may determine a response of the example mat 100 to contact or impact along an exterior surface of the carpeted layer 102.
In some implementations, such as shown in
The foam layer 104 includes first 106, second 108, third 110, and fourth 112 sides that define a perimeter of the foam layer 104. The first side 106 is opposite of the second side 108, and the third side 110 is opposite the fourth side 112. The foam layer 104 also includes first and second channels 114, 116 extending in-plane through the foam layer 104 from the first side 106 to the second side 108. The first and second channels 114, 116 are configured to allow the example mat 100 to fold around a first folding axis 118 into a folded position. For example, the example mat 100 may be folded around the first folding axis 118 in directions indicated by double-arrow 120 to reach the folded position. The first and second channels 114, 116 may be parallel to the first folding axis 118.
In many instances, the first and the second channels 114, 116 are parallel to each other. However, in certain instances, the first and the second channels 114, 116 may be angled relative to each other. Although
In some variations, the first wall 134 may be inclined relative to the second wall 140 and the transition surface 136 may include an inclined surface. The second wall 140 may also include a base surface 146 configured to be supported by the lower of the two surfaces. In some variations, a beveled surface 148 may terminate the carpeted and foam layers 102, 104 at the third side 110. The beveled surface 148 may be angled with respect to the sixth side 124 to allow the beveled surface 148 to serve as part of the base surface 146 of the example mat 100. In certain instances, such as shown in
In some variations, the foam layer 104 is configured such that the first and second channels 114, 116 are closed when the mat is in the folded position. Such closing may leave a partial gap within the first and second channels 114, 116, or alternatively, leave no gap. The foam layer 104 may also be configured such that portions of the foam layer 104 adjacent sides of the first and second channels are uncompressed when the first and second channels 114, 116 are closed. Such sides may include one or more lateral sides, one or more base sides adjacent the carpeted layer 102, or some combination thereof. The lack of compression may serve to reduce a resistance to folding the example mat 100 into the folded position. In some variations, such as shown in
Now referring back to
The foam layer 104 further includes relief cuts 126 extending in-plane through the foam layer 104 from the third side 110 of the perimeter to the fourth side 112. The relief cuts 126 are configured to allow the example mat 100 to fold around a second folding axis 128 into a rolled position. The relief cuts 126 may be parallel to the second folding axis. In many implementations, the foam layer 104 is configured such that the carpeted layer 102 is inward-facing and the foam layer 104 is outward-facing when the example mat 100 is in the rolled position. For example, starting at the first side 106, the example mat 100 may be folded around the second folding axis 128 in a direction indicated by single-arrow 130 to reach the rolled position. The relief cuts 126 may be disposed in the foam layer 104 parallel to each other. However, in certain instances, the relief cuts 126 may be angled relative to each other. In some implementations, such as shown in
The foam layer 104 may include any number of relief cuts 126. Moreover, the relief cuts 126 may have any type of cross-section that allows the example mat 100 to fold around the second folding axis 128 into the rolled position. The cross-section may vary along a length of the relief cuts 126 and need not be the same for all relief cuts 126. In some implementations, such as shown in
In implementations where a distance from the fifth side 122 to the sixth side 124 defines a thickness of the foam layer 104, the relief cuts 126 may also have a depth from the sixth side 124 that is equal to the thickness of the foam layer 104. For example, the foam layer 104 may have a thickness of 2 inches and a depth of the relief cuts 126 may be 2 inches. However, in some variations, the depth of the relief cuts 126 may be less than the thickness of the foam layer 104. For example, the foam layer 104 may have a thickness of 2 inches and a depth of relief cuts 126 may be about 1.9 inches (e.g., 1.897 inches). In some instances, the relief cuts 126 may have a depth that is at least 90% of the thickness of the foam layer 104. In some instances, the relief cuts 126 may have a depth that is at least 95% of the thickness of the foam layer 104. Other percentages, however, are possible (e.g., at least 99%). One or more of the relief cuts may have a depth that varies from the third side 110 to the fourth side 112.
Now referring back to
For example, as shown in
In another example, the first side 106 or the second side 108 may include a pair of angled portions such that the perimeter defines, at least partially, a V-shaped indent when the mat is laid flat. If the foam layer 104 also shares the perimeter in common with the carpeted layer 102, the example mat 100 can define a triangular prismatic volume having a single angled end. The single angled end may allow two instances of the example mat 100 to be disposed against each other to change a direction of an otherwise straight-running transition. This change may allow the two instances of the example mat 100 to define a corner for an otherwise straight-running boarder encircling a rectangular spring floor.
Similarly, the first side 106 and the second side 108 may each include a pair of angled portions such that the perimeter defines, at least partially, a bow-tie shape when the mat is laid flat. If the foam layer 104 also shares the perimeter in common with the carpeted layer 102, the example mat 100 can define a triangular prismatic volume which each end is angled. The pair of angled ends may allow four instances of the example mat 100 to be disposed against each other to define a rectangular transition (e.g., a rectangular border around a rectangular spring floor). The angles associated with the angled ends may be predetermined to define other polygons for the transition (e.g., triangles, pentagons, hexagons, octagons, etc.).
During use, the example mat 100 may be folded by a user around the first folding axis 118 into the folded position. In particular, the user may grab the third side 110 and fold the example mat 100 along a first crease line associated with a first base portion of the first channel 114. The first base portion includes a portion of the carpeted layer 102 aligned with the first channel 114, and in some implementations, may also include a portion of the foam layer 104 in the first channel 114. Similarly, the user may grab the fourth side 112 and fold the example mat 100 along a second crease line associated with a second base portion of the second channel 116. The second base portion includes a portion of the carpeted layer 102 aligned with the second channel 116, and in some implementations, may also include a portion of the foam layer 104 in the second channel 116. During folding of the example mat 100 into the folded position, the first and second base portions act as elastic, reversible hinges that open and close in response to displacement of, respectively, the first wall 134 relative to the third wall 144 and the second wall 140 relative to the third wall 144. During folding of the example mat 100 into the folded position, the user may close the first and second channels 114, 116. The relief cuts 126 remain closed (or substantially so) as the example mat 100 is displaced around the first folding axis 118.
Once the example mat 100 is in the folded position, the user may choose to secure the example mat 100 in the folded position. For example, the user may couple one or both of the carpeted layer 102 and the foam layer 104 proximate the third side 110 of the perimeter to one or both of the carpeted layer 102 and the foam layer 104 proximate the fourth side 112 of the perimeter. After securing the example mat 100, the user may proceed to place the folded and secured example mat 100 on a lower of two surfaces and adjacent to an upper of two surfaces. When the example mat 100 has been placed, the first wall 134 provides a transition surface extending from a lower of two surfaces to an upper of the two surfaces, and the second wall 140 provides a base surface supported by the lower of the two surfaces. The user 100 may also proceed to couple a portion of the carpet layer 102 to at least one of the lower of the two surfaces, the upper of the two surfaces, and a riser surface. The riser surface traverses at least a portion of an elevation between the lower of the two surfaces and the upper of the two surfaces. For example, the lower of the two surfaces may be a floor surface, and the upper of the two surfaces may be an elevated surface of a spring floor disposed on the floor surface.
The example mat 100 may be uncoupled from one or both of the two surfaces, unsecured, and unfolded for transport, storage, or other purpose. To prepare the example mat 100 for transport or storage, the user may then proceed to fold the example mat 100 around the second folding axis 128 into the rolled position. The user may start by grabbing either the first side 106 or the second side 108 and folding the example mat 100 along crease lines associated with respective base portions of the relief cuts 126. The respective base portions of the relief cuts 126 act as elastic, reversible hinges that open and close in response to displacement of the example mat 100 around the second folding axis 128. During folding of the example mat 100 into the rolled position, the user may open the relief cuts 126. Alternately, when unfolding the example mat 100 from the rolled position, the user may close the relief cuts 126. When in the rolled position, the carpeted layer 102 is inward-facing and the foam layer 104 is outward-facing.
The user may prepare multiple instances of the example mat 100, as described above, to create multiple corresponding transitions between two surfaces of different elevation. For example,
In some aspects of what is described here, a method of forming a transition between two surfaces of different elevation includes folding a mat around a first folding axis into a folded position. The mat includes a carpeted layer secured to a foam layer. The foam layer includes first, second, third, and fourth sides that define a perimeter of the foam layer. The first side is opposite the second side, and the third side is opposite the fourth side. The foam layer also includes first and second channels extending in-plane through the foam layer from the first side to the second side. The first and second channels are configured to allow the mat to fold around the first folding axis into the folded position. The foam layer additionally includes a fifth side mated to the carpeted layer and a sixth side that defines an interior boundary of the mat when the mat is in the folded position. First portions of the carpeted and foam layers between the third side of the perimeter and the first channel define a first wall; second portions of the carpeted and foam layers between the second channel and the fourth side of the perimeter define a second wall; and the first wall is inclined relative to the second wall when the mat is in the folded position.
The method also includes placing the folded mat on a lower of the two surfaces and adjacent to an upper of the two surfaces such that the first wall provides a transition surface extending from the lower of the two surfaces to the upper of the two surfaces, and the second wall provides a base surface supported by the lower of the two surfaces. In some instances, the foam layer includes relief cuts extending in-plane through the foam layer from the third side of the perimeter to the fourth side, the relief cuts configured to allow the mat to fold around a second folding axis into a rolled position.
In some implementations, the method includes folding the mat around the second folding axis into the rolled position. In these implementations, the carpeted layer is inward-facing and the foam layer is outward-facing when the mat is in the rolled position. In some instances, folding the mat around the second folding axis may include opening the relief cuts. In some implementations, the method includes unfolding the mat around the second folding axis from the rolled position. In such implementations, the carpeted layer is also inward-facing and the foam layer is outward-facing when the mat is in the rolled position. In some instances, unfolding the mat around the second folding axis may include closing the relief cuts.
In some implementations, folding the mat around the first folding axis includes closing the first and second channels. Portions of the foam layer adjacent sides of the first and second channels may be uncompressed when the first and second channels are closed. In some implementations, the method includes unfolding the mat around the first folding axis from the folded position. Unfolding the mat around the first folding axis may include opening the first and second channels. In some implementations, folding the mat around the first folding axis includes folding the mat to have a triangular cross-section in the folded position. In some instances, the triangular cross-section defines a right triangle. In these instances, the first wall defines a hypotenuse leg of the right triangle and serves as an inclined wall that includes the transition surface.
In some implementations, the method includes coupling one or both of the carpeted layer and the foam layer proximate the third side of the perimeter to one or both of the carpeted layer and the foam layer proximate the fourth side of the perimeter. Such coupling may secure the folded mat in the folded position. In some implementations, the method includes coupling a portion of the carpet layer to at least one of the lower of the two surfaces, the upper of the two surfaces, and a riser surface. The riser surface may traverse at least a portion of an elevation between the lower of the two surfaces and the upper of the two surfaces.
In some variations, the lower of the two surfaces is a floor surface. In further variations, the upper of the two surfaces is an elevated surface of a spring floor disposed on the floor surface. Other types of surfaces are possible for the lower of the two surfaces and the upper of the two surfaces.
In some aspects of what is described here, a transition may be formed between two surfaces of different elevation. The transition may be formed by a mat, as described by the following examples:
A mat for forming a transition between two surfaces of different elevation, the mat comprising:
a carpeted layer secured to a foam layer, the foam layer comprising:
The mat of example 1, wherein the foam layer is configured such that the carpeted layer is inward-facing and the foam layer is outward-facing when the mat is in the rolled position.
The mat of example 1 or example 2, wherein the first and second channels are parallel to each other, and the relief cuts are parallel to each other.
The mat of example 1 or any one of examples 2-3, wherein the relief cuts are perpendicular to the first and second channels, and the second folding axis is perpendicular to the first folding axis.
The mat of example 1 or any one of examples 2-4,
The mat of example 5, wherein, when the mat is in the folded position:
The mat of example 6,
The mat of example 1 or any one of examples 2-7, wherein the carpeted layer has a thickness less than a thickness of the foam layer.
The mat of example 1 or any one of examples 2-8, wherein a distance from the fifth side to the sixth side defines a thickness of the foam layer, and the first and second channels have a depth from the sixth side that is less than the thickness of the foam layer.
The mat of example 1 or any one of examples 2-7, wherein the first and second channels have a depth extending through the foam layer to the carpeted layer.
The mat of example 1 or any one of examples 2-10, wherein the foam layer is configured such that the first and second channels are closed when the mat is in the folded position.
The mat of example 1, wherein the foam layer is configured such that portions of the foam layer adjacent sides of the first and second channels are uncompressed when the first and second channels are closed.
The mat of example 1 or any one of examples 2-12, wherein the mat is configured such that, when the mat is in the folded position, the mat has a triangular cross-section.
The mat of example 13, wherein the triangular cross-section defines a right triangle and a portion of the mat defining a hypotenuse leg of the right triangle serves as an inclined wall capable providing the transition between the two surfaces of different elevation.
The mat of example 1 or any one of examples 2-14, wherein a distance from the fifth side to the sixth side defines a thickness of the foam layer, and the relief cuts have a depth from the sixth side that is equal to the thickness of the foam layer.
The mat of example 1 or any one of examples 2-15, wherein the perimeter is a rectangular perimeter when the mat is laid flat.
The mat of example 1 or any one of examples 2-15, wherein the first side or the second side comprise a pair of angled portions such that the perimeter defines, at least partially, a V-shaped indent when the mat is laid flat.
The mat of example 1 or any one of examples 2-15, wherein the first side and the second side each comprise a pair of angled portions such that the perimeter defines, at least partially, a bow-tie shape when the mat is laid flat.
The mat of example 1 or any one of examples 2-18, wherein the relief cuts define grooves extending in-plane through the foam layer from the third side of the perimeter to the fourth side.
The mat of example 1 or any one of examples 2-18, wherein the relief cuts define slits extending in-plane through the foam layer from the third side of the perimeter to the fourth side.
The mat of example 1 or any one of examples 2-20, wherein the mat is sized such that the mat, when in the folded position, can form a walking surface between a spring floor and a base floor that supports the spring floor.
In some aspects of what is described here, a method may be used to form a transition between two surfaces of different elevation. The method may use a mat to form the transition, as described by the following examples:
A method of forming a transition between two surfaces of different elevation, the method comprising:
The method of example 22, wherein the foam layer comprises:
The method of example 23, comprising:
The method of example 24, wherein folding the mat around the second folding axis comprises opening the relief cuts.
The method of example 23 or any one of examples 24-25, comprising:
The method of example 26, wherein unfolding the mat around the second folding axis comprises closing the relief cuts.
The method of example 22 or any one of examples 23-27, wherein folding the mat around the first folding axis comprises closing the first and second channels.
The method of example 28, wherein portions of the foam layer adjacent sides of the first and second channels are uncompressed when the first and second channels are closed.
The method of example 22 or any one of examples 23-29, comprising unfolding the mat around the first folding axis from the folded position.
The method of example 30, wherein unfolding the mat around the first folding axis comprises opening the first and second channels.
The method of example 22 or any one of examples 23-31, wherein folding the mat around the first folding axis comprises folding the mat to have a triangular cross-section in the folded position.
The method of example 32,
The method of example 22 or any one of examples 23-33, comprising:
The method of example 22 or any one of examples 23-34, comprising:
The method of example 22 or any one of examples 23-35, wherein the lower of the two surfaces is a floor surface.
The method of example 36, wherein the upper of the two surfaces is an elevated surface of a spring floor disposed on the floor surface.
While this specification contains many details, these should not be understood as limitations on the scope of what may be claimed, but rather as descriptions of features specific to particular examples. Certain features that are described in this specification or shown in the drawings in the context of separate implementations can also be combined. Conversely, various features that are described or shown in the context of a single implementation can also be implemented in multiple embodiments separately or in any suitable sub-combination.
Similarly, while operations are depicted in the drawings in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. In certain circumstances, multitasking and parallel processing may be advantageous. Moreover, the separation of various system components in the implementations described above should not be understood as requiring such separation in all implementations, and it should be understood that the described program components and systems can generally be integrated together in a single product or packaged into multiple products.
As used herein, the term “at least one”, when used with the conjunction “and” to describe two or more features, refers to any combination of the two or more features in which a single feature, if present, has a quantity of at least one. For example, “at least one” of feature A “and” feature B refers to any of three possible combinations: [1] at least one of feature A, [2] at least one of feature B, or [3] at least one of feature A and at least one of feature B. Similarly, “at least one” of feature A, feature B, “and” feature C refers to any of seven possible combinations: [1] at least one of feature A, [2] at least one of feature B, [3] at least one of feature C, [4] at least one of feature A and at least one of feature B, [5] at least one of feature A and at least one of feature C, [6] at least one of feature B and at least one of feature C, or [7] at least one of feature A, at least one of feature B, and at least one of feature C.
A number of embodiments have been described. Nevertheless, it will be understood that various modifications can be made. Accordingly, other embodiments are within the scope of the following claims.
This application claims priority to U.S. Provisional Application No. 62/866,930 filed Jun. 26, 2019 and entitled “Forming a Transition Between Two Surfaces of Different Elevation.” The entire contents of the priority application are hereby incorporated by reference.
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Number | Date | Country | |
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20200407978 A1 | Dec 2020 | US |
Number | Date | Country | |
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62866930 | Jun 2019 | US |