The present invention is directed to a floor covering having a relatively rigid base and a mat overlaying the base and detachable therefrom. The two part floor covering may be positioned in an area of high pedestrian traffic, such as the entranceway of a building, to collect dirt and moisture from a person's shoes. The mat can be lifted from the base and laundered separately. Alignment and deployment of the textile component with the base component in an efficient manner is also described herein.
Conventional floor mats are constructed by tufting a textile yarn into a substrate and bonding a rubber backing to the substrate, opposite the face yarns. The rubber backing is relatively heavy to stabilize the mat and to protect the floor. Such mats, however, have certain drawbacks.
The energy required to transport, wash and dry a typical floor mat is significant due to the overall mass of the mat. This mass is made up of the mass of the textile yarns, the mass of the substrate into which the yarns are tufted, and most significantly, the mass of the rubber backing sheet, which is bonded to the substrate under heat and pressure. As will be appreciated, a reduction in the overall mass of the floor mat will result in a reduced energy requirement in washing and drying the mat. Moreover, a relative reduction in the mass of the rubber backing sheet, i.e. the heaviest component, will provide the most significant benefit.
Mats are typically constructed with the rubber backing extending beyond the edges of the tufted substrate, to form an outer border. The outer border assists in maintaining the mat in a flat orientation and provides a transition from the floor to the upper surface of the mat. Under some circumstances, however, the rubber border can wrinkle and buckle. For example, the edges of the mat can become damaged by temperature extremes, abuse and mishandling. Irregularities in the outer border of the mats can create a tripping hazard and interfere with the operation of nearby doors.
Conventional mats are difficult to vacuum, because the suction power of a vacuum cleaner can cause the mat to lift from the floor, thereby creating raised sections or preventing movement of the vacuum cleaner relative to the mat. Additionally, the mat may be drawn into the vacuum cleaner by the strong suction, especially along the edges of the mat, and damaged.
One prior art solution is to provide a separate base component and textile mat component, whereby the base is relatively rigid and the textile mat is lighter in weight, for easier laundering. Examples of the two component systems may be found in the following references.
U.S. Pat. No. 5,524,317 discloses a magnetic powder incorporated into the elastomeric backing of a lightweight mat. The mat is placed over a magnetic base and held in place during use.
U.S. Pat. No. 6,093,469 discloses a mat having a backing with longitudinal treads, which prevent creep and folding of the mat on the floor. A separate border is provided to stabilize the mat. The edge of the mat is inserted into a pocket recess in the border and glued into place.
U.S. Pat. No. 7,416,771 B2 discloses a mat frame and a replaceable mat insert. The frame has a recess for receiving the edge of the mat insert. The mat insert may be a nonwoven or a reticulated foam. Studs or nibs extending from the frame engage the underside of the mat insert.
WO 00/15582 discloses a separate base and a dust-absorbing sheet overlaying the base. The sheet may be a replaceable nonwoven material. The base is provided with a treatment to prevent the sheet from moving, such as a collection of small cylindrical protuberances. Additionally, the base may be treated to coarsen the surface, to further stabilize the sheet. The base is also provided with a peripheral pocket for receiving and securing the edges of the dust-absorbing sheet.
US Patent Application Publication 2003/0180499 A1 discloses a multiple-component mat, wherein the mat and the base are held together by magnetic attraction.
US Patent Application Publication 2006/0107480 A1 discloses a door mat having a rubber backed textile mat, which overlays a tray-shaped base having a plurality of inserts with stud-shaped projections. The base has a peripheral retention lip which receives the border of the mat.
US Patent Application Publication 2011/0229692 A1 discloses a modular base system for a floor mat, with various ways to join the sections of the base together. The mat may be secured to the base by hooks that directly engage the mat, hook and loop fasteners or adhesive tape.
A drawback with many of the multi-component mat systems arises when a replacement mat is repositioned relative to the base. The components used to secure the mat to the base, such as magnets, hook and loop fasteners and adhesive tape, tend to immediately engage when the mat is laid on the base. It then becomes difficult to adjust the mat relative to the base or to remove wrinkles from the mat. Accordingly, one is required to repeatedly disengage the mat from the base, to make small adjustments to the position of the mat.
Therefore, because the attachment mechanisms can utilize a high amount of force to hold the top and bottom components of the floor mat together, the initial alignment and deployment of the top textile component onto the base component can present challenges. This problem is exaggerated by the large surface area of the two components that are in contact with one another. In this regard, even if the adherence force per unit area is low, the large surface area means that the total resistance to sliding and movement can be very high making realignment of the components very difficult. If not corrected, mis-alignment of the textile component with the base component may create trip hazards within the floor mat and may be aesthetically not pleasing.
The present invention overcomes these challenges via the use of alignment and deployment techniques that rely upon temporary reduction in surface area of the textile and/or base component and/or temporary reduction in adherence force between the textile and base components.
A two part floor covering is provided having a base with a planar tray and mat overlaying the tray. Optionally, the base also includes a border surrounding the tray. The border may slope upward from its outer perimeter to its inner perimeter adjacent the tray, thereby creating a recess for the tray section of the base. The mat may be a sheet-like substrate with an upper face and a lower face, having pile yarns extending from the upper face of the substrate and a backing layer attached to the lower face of the substrate.
In one embodiment of the invention, the floor covering is provided with a fastening system for detachably securing the mat to the base tray. The fastening system has at least one mushroom-type hook fastener component attached to one or the other of the backing layer of the mat or the tray. A second component of the fastening system, which may be a mushroom-type hook fastener, loop strip or a fabric capable of being penetrated by the hooks of the first component, is attached on the backing layer of the mat or tray, opposite the first component. For example, if the first component is attached to the backing layer, the second component is attached to the tray. It has been found that such a fastening system provides the advantage of allowing a mat to be laid on the tray and the mat can be positioned without engaging or interlocking the first and second components, that is, the mat can be moved laterally without requiring the mat to be lifted vertically to disengage the fastening system. When the mat is positioned in the desired location overlaying the base, the mat is pressed downward to engage the fastening system.
In another embodiment of the invention, which may be employed alone or in combination with the mushroom-type fastening system, the mat, the tray or both incorporate a structure to increase the coefficient of friction between the mat and the base selected from a textured surface, complimentary surfaces, surface projections or a layer of tacky material, or a combination of one or more of such structures.
In yet a further embodiment, the invention relates to a method for installation of a floor mat comprising the following steps: (a) providing a base component, wherein the base component contains at least one attachment means; (b) providing a textile component, wherein the textile component is comprised of tufted pile carpet and contains at least one attachment means that works in corresponding relationship with the at least one attachment means of step “a,” and wherein the base component and the textile component are releasably attachable to one another via the at least one attachment means; (c) aligning the textile component with the base component, wherein the step of aligning is accomplished via the use of at least one alignment or deployment mechanism; and (d) deploying the textile component onto the base component.
Without intending to limit the scope of the invention, the preferred embodiments and features are hereinafter set forth. All United States patents cited in the specification are incorporated herein by reference.
The two part floor covering has a textile mat component and a base component, which are combined by laying the mat over the base, in particular over the tray section of the base. When the base is provided with a border, the mat is seated within the border.
The present invention also provides the use of alignment and deployment techniques that rely upon temporary reduction in surface area of the textile and/or base component and/or temporary reduction in adherence force between the textile and base components in order to allow efficient installation of the textile component to the base component.
The textile mat has pile yarns extending from a substrate. The yarns may be tufted into the substrate, as is well known in the art, and optionally secured with an adhesive or precoat, e.g. a hot melt material, applied to the underside of the substrate. The substrate may be a woven or nonwoven sheet, such as a slit-film woven polypropylene substrate or a melt-blown substrate made of a polyolefin, polyester or polyamide fiber, in particular a co-extruded polyester/nylon fiber, having a weight of 2 to 5 oz per yd2.
The yarn may be selected from natural and synthetic fibers and combinations thereof. By way of example, the yarn may be cotton, a polyamide, such as nylon, a polyester, such as PET, or a polyolefin, such as polypropylene.
The mat has a backing layer attached to the underside of the substrate. The backing layer may be a rubber or rubber-like sheet bonded to the substrate, for example, by vulcanization. The backing layer may also react with or be affixed by an adhesive or hot melt material. Examples of suitable compositions for the elastomeric sheet include neoprene rubber, acrylonitrile-butadiene rubber, styrene butadiene rubber, polyolefin elastomers, such as ethylene-propylene-diene, propylene elastomers and ethylene elastomers, and other thermoplastic elastomers, such as olefin containing elastomer, thermoplastic vulcanizate (TPV), poly ethylene-vinyl acetate (EVA), thermoplastic polyurethane, polyester copolymer elastomer, polyamide elastomer, flex PVC, chlorinated polyethylene. Alternatively, the backing layer may be formed by applying a molten or liquid composition to the substrate and curing the composition in situ. The backing layer may include various additives, as is known in the art. For example, thermoplastic resins designed to impart flexibility, strength, stiffness, etc. may be incorporated into the backing composition. In yet another embodiment, the backing layer may be a textile sheet, such as a nonwoven material, bonded to the substrate, which provides dimensional stability to the mat.
The weight of the yarn and substrate component of the mat may range from 15 to 50 oz/yd2, in particular from 15 to 35 oz/yd2. The backing component of the mat, which may be a latex back coating or a separate sheet laminated to the substrate/yarn components. The backing component may range in weight from 10 to 60 oz/yd2, in particular from 10 to 30 oz/yd2. Heavy duty prior art mats typically weigh about 130 oz/yd2. Thus, it can be understood that the present invention represents a significant weight reduction, with regard to the overall mat weight.
Referring to
The base has a planar-shaped tray, which is sized to accommodate the mat. The base may also include a border surrounding the tray, whereby the border provides greater dimensional stability to the tray, for example, because the border is thicker, i.e. greater in height relative to the floor. Additionally, the border may be angled upward from its outer perimeter towards the interior of the base, so as to provide a recessed area where the tray is located, thereby creating a substantially level area between the inner perimeter of the border and the mat, when the mat overlays the tray. Additionally, the gradual incline from the outer perimeter of the border to the inner perimeter of the border minimizes tripping hazards and the recess created thereby protects the edges of the mat.
It can be understood that the base may be subdivided into two or more recessed trays, by extending a divider from one side of the border to an opposite side of the border, substantially at the height of the inner perimeter. Accordingly, it would be possible to overlay two or more mats in the recesses created in the base.
The base, including the border, may be formed in a single molding process as a unitary article. Alternatively, the border and the tray may be molded separately and then bonded together in a second operation. The tray and border may be made of the same or different materials. Examples of suitable compositions for forming the border and the tray are elastomers, such as natural and synthetic rubbers, thermoplastic and thermoset resins and metal.
Referring to
The mat is placed on the base, overlaying the tray, to create the floor covering of the present invention. The mat can be readily removed for laundering or disposal and replaced with another mat, as desired. Various features are provided to improve the operation of the floor covering, especially with regard to inhibiting relative movement between the mat and the base when the floor covering is deployed on a floor, both with regard to horizontal movement (lateral shifting) and vertical movement (lifting). An advantage of the present invention is that the features employed to inhibit relative movement between the mat and base when the floor covering is in use do not interfere with mat replacement, which requires that the mat be readily shifted laterally and, as necessary, lifted, to position the mat relative to the base and remove wrinkles in the mat prior to deployment.
The mat may be temporarily affixed to the base by a mushroom-type fastener system. The system includes a mushroom-type hook strip characterized by a backing, an array of upstanding stems distributed across the face of the backing, with each of the stems having a mushroom head. The mushroom-type hook strips are typically provided as an integrally molded unit. A first mushroom-type hook strip can engage a second mushroom-type hook strip that is configured to interlock with the first strip to create a fastener system, with the first and second strips attached to the mat and base, respectively.
Alternatively, the mushroom-type hook fastener may engage a loop strip or the mushroom-type hook fastener can be directly fastened to a fabric that can be penetrated by the hooks. It can be understood that the mushroom-type hook fastener may be attached to the base and the loop fabric or the fabric cable of being penetrated by the mushroom-type hooks may be attached to the backing layer of the mat, or vice versa. In one embodiment of the invention, the mushroom-type hook fastener is attached to the base and the backing layer of the mat is a fabric capable of being penetrated by the hooks, such as a scrim or non-woven fabric.
It is not necessary for the entire surface of the mat and tray to be covered with the mushroom-type hook fastener system. Rather, for economy of manufacture and to balance the requirements of stabilizing the mat without making it overly difficult to separate the mat from the base for servicing, the mushroom-type hook fastener system may be spaced apart in discrete areas, for example spaced around the edges of the mat.
Examples of suitable mushroom-type hook fastener systems may be found in the following references: U.S. Pat. No. 4,454,183; U.S. Pat. No. 5,077,870; U.S. Pat. No. 5,607,635; U.S. Pat. No. 5,845,735; U.S. Pat. No. 7,188,396 B2; and US Published Patent Application No. 2014/0137377 A1. Commercial products include Microplast® and Duotec® fasteners, available from Gottlieb Binder GmbH & Co. KG, Dual Lock™ fasteners from 3M.
In the foregoing embodiment of the invention, the method of replacing a mat is a two-step process. The mat is first positioned to overlay the tray, within the border of the base. The relatively lightweight mat does not immediately engage the mushroom-type fastener system, which allows the mat to be moved laterally relative to the base by lateral movement, without the need to disengage the fasteners. Once the mat is properly positioned, an operator need only press down on the mushroom-type fastener system, for example, along the perimeter of the mat, to engage the fastener and inhibit relative movement between the mat and base. When the mat is to be replaced, an operator can simply peal back the mat, by lifting an edge.
Referring
The relative lateral movement between the mat and the base may be inhibited by incorporating one or more of the following techniques to provide a high coefficient of friction between the backing layer and the tray. The techniques to increase the coefficient of friction between the mat and the base may be used alone or in conjunction with the mushroom-type fastening system described herein. Furthermore, where it is feasible, two or more of the techniques to increase the coefficient of friction between the mat and the base may be employed.
The surface of the backing layer, i.e. the underside, or the upper surface of the tray, or both can be textured. Broadly, the term texturing is intended to include any physical modification of the surface texture of a component to increase the coefficient of friction between the two surfaces. Of particular interest is texturing a surface to increase its roughness. In one embodiment, the backing layer or tray may be textured by calendaring against an embossed roll. Alternatively, the textured surface may be created by a clam press having an embossed surface.
In one embodiment, the surface of the backing layer, tray or both may be textured to create a granular surface. By way of example, a granular surface having a surface roughness of from 10 to 50 microns, as measured between the low and high points along the textured area, may be created to increase the coefficient of friction.
Of particular utility is to provide the surfaces of both the backing layer and the tray with complimentary surface structures, such that raised areas and valleys of the respective surfaces fit together. In one embodiment of the invention, the contact surface area between the mat and the tray is greater than the area covered by the mat itself, for example, because the mat and tray mesh together. The scale of the complimentary surfaces may be adjusted so that the force required to adjust the mat laterally relative to the tray is minimal, when a replacement mat is installed. In that regard, it is believed that the differences in height between raised areas and valley ranging from 10 to 50 microns are particularly useful in the present invention.
The coefficient of friction between the backing layer and the tray may be increased by providing one or both of the surfaces with projections. The projections may be rounded, such as nubs, or pointed, such as spikes. By way of example, the surface projections may extend from the surface of the backing layer or tray a distance of from 10 to 50 microns. Referring to
The coefficient of friction between the backing layer and the tray may be increased by providing one or both of the surfaces with a layer of tacky material. For example, the tacky material may be a hot-melt thermoplastic material, such as a polyolefin based elastomer, in particular, a propylene, ethylene or ethylene-vinyl acetate based elastomer. The tacky material may be a pressure sensitive adhesive, such as a double-side film.
Additional alignment and deployment techniques based upon masking or blocking properties are shown in
The sheet of material 275, 375 is comprised of any film or sheeting material that provides masking or blocking properties to the attachment mechanisms incorporated into or onto the textile and/or base component. For example, the sheet of material may be comprised of cellulose-containing materials, such as paper; polymer films; and combinations thereof. Thus, this installation method utilizes a removable temporary “mask” that reduces the attractive force between the components comprising the floor mat. This is accomplished by using sheeting, film or paper material that is placed between the base component and the rolled up textile component, but only in the area where the rolled up textile component and the base component contact one another. Now that the total area is greatly reduced by the roll and the force per unit area is reduced by the mask, the ease of moving the roll around to achieve alignment is now even greater. Once alignment is achieved, the masking material is removed by pulling or sliding it out from between the components.
The corner attachment means 412 of
Details of corner attachment means 412 are illustrated in
In summary, the following alignment and deployment techniques may be used for installing the multi-component floor mat:
In the first case, it has been found that if the top half is rolled up in a fairly tight roll—face in—and then placed down on the base, that the total attraction force is so reduced that an installer can slide the roll enough to be able to get a good alignment with the base using the exposed end of the roll as a guide to align to the base. This method is mainly envisioned for small two part mats. Alignment marks can be put on the base to assist the top alignment.
The second method is to use the first method but coupled with a removable temporary “mask” that reduces the attractive force. This can be accomplished by using film or paper that is placed down on the base between the rolled up top and the base only in the area where the rolled up top will touch. Now that the total area is greatly reduced by the roll AND the force per unit area is reduced by the mask, then the ease of moving the roll around to achieve alignment is now even greater. Once alignment is achieved, the film or paper is slid out.
A third method, that is a refinement of the removable mask method, is to use a mask that is permanently installed and that selectively masks only the most critical area—i.e. the area directly below the roll, and leaves the area near the mat edge alone. One still manually aligns the roll and its edge to the base, but now the alignment is relatively easy and can be done quickly.
A fourth method can be used in concert with any of the above methods or alone. This method relies on an alignment pins or grommets that can capture two or more of the carpet corners. The pins are located in either the base or top and associated with the pins are complementary holes in the top or base. Once inserted, the pins capture the other half of the carpet requiring such that the two halves cannot be separated without substantial force. Once captured, the top mat can be picked up and gently laid down in alignment with the base. If a mat top should become disturbed or misaligned in the field, it is relatively easy to realign by simply picking the top up and laying it back down. If used in concert with 1-3 above, alignment now becomes not only easy, but quick and precise. Furthermore if care is taken to ensure that the masked area is always below the alignment pins and is sufficient size so that if the top is picked up that where it drapes is masked, then alignment/deployment is always easy.
A fifth method is a refinement of number 4 whereby the attachment pins are hidden and not visible from the face of the mat top. Methods to accomplish this are tightly fitting grommets or strong magnets molded into or glued to the back of the top mat, or grommets with strong magnets—all associated with complimentary holes with or without magnets in the base. This method can also be used in association with any of the 1-3 methods.
While the Figures illustrate exemplary embodiments of the alignment and deployment methods for installing the multi-component floor mat of the present invention, certain other aspects and features are contemplated to be obvious variations of the invention described herein. For instance, two or four corner attachment means may be present in the floor mat as used for attaching the textile component to the base component. Further, any combination of alignment and deployment techniques may be used either singularly or combined with others. For example, the method of reducing the surface area of the textile component by rolling it up may be used in combination with the masking technique wherein a sheet of material is placed between the textile and base components to reduce the forces of attraction between the components.
There are, of course, many alternative embodiment and modifications of the invention intended to be included within the following claims. For example, instead of a mat having a pile yarn upper surface and a backing layer, the mat may be a nonwoven textile surface, a solid rubber material or a substrate having surface bristles, for example, bristles used to scrub dirt and mud from a person's shoes. In another embodiment of the invention, the base may be provided with a pocket or recess formed at the junction of the border and the tray. For example, the border may overhang the tray a short distanced to create a recess and the peripheral edge of the mat may be inserted in the recess.
Also within the scope of the invention is to provide a base with a border that can be clamped down on part or all of the peripheral edge of the mat. The clamping mechanism may include a clam-shell hinge between the border and the tray. Or, the border function as a snap-ring to engage the periphery of the tray. An O-ring may be inserted between the border and the tray components of the base, over the peripheral edge of the mat to create a seal and to grip the mat.
This application is a division of and claims priority to U.S. patent application Ser. No. 16/225,001, entitled “Two Part Floor Covering,” which was filed on Dec. 19, 2018, which is a division of and claims priority to U.S. patent application Ser. No. 14/818,402, entitled “Two Part Floor Covering,” which was filed on Aug. 5, 2015, which claims priority to and is a non-provisional of U.S. Patent Application Ser. No. 62/033,233, entitled “Two Part Floor Covering,” which was filed on Aug. 5, 2014, all of which are entirely incorporated by reference herein.
Number | Date | Country | |
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62033233 | Aug 2014 | US |
Number | Date | Country | |
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Parent | 16225001 | Dec 2018 | US |
Child | 16923318 | US | |
Parent | 14818402 | Aug 2015 | US |
Child | 16225001 | US |