The present application claims benefit of priority as a continuation of U.S. non-provisional utility application 12/772,386, entitled “Passive Mattress Spinner” and filed on May 3, 2010, which is incorporated by reference herein.
1. Field of the Invention
The present invention relates to a system for facilitating the rotation of a top mattress in a horizontal plane with respect to a box spring or lower mattress and more particularly to a system which allows rotation of a top mattress in a horizontal plane with minimal effort in order to relocate worn or depressed portions of the mattress in order to even out the overall wear of the mattress.
2. Description of the Prior Art.
A conventional bed includes a box spring or bottom mattress and an upper mattress. The box spring is normally carried by a bed frame which , in turn, carries a top mattress, which ends up being suspended about 13-16 inches from the floor. The top mattress (hereinafter “mattress”) may be placed on top of the box spring or alternatively placed upon a platform forming a platform bed. In both applications, the mattress is held in place by friction and its weight.
Various types of mattresses are known. For example, U.S. Pat. Nos. 7,617,556 and 7,644,671 disclose conventional mattresses. Such conventional mattresses include a “casing” which is formed from material for holding the internal components of the mattress. The casing includes a bottom panel and four (4) vertical panels connected to the periphery of the bottom panel forming an open top container. In one such conventional mattress, a spring core is disposed in the container and rests against the bottom floor and fits snugly against the vertical panels. One or more layers of foam padding is placed on top of the spring core and covered with a top cover which is secured to the vertical panels.
In other known mattresses, a foam core is used in place of the spring core. Other known mattresses are known to include a so-called “pillow-top”. The pillow top is generally formed as a comforter secured to the top cover and filled with cotton or some type of fibrous material.
A problem with the various types of mattresses, as discussed above, is that over time the mattress materials lose their resiliency causing body depressions to develop. In order to even out the wear in the mattress, it is known to rotate the mattress in the horizontal plane to relocate the body depressions, as shown for example, in
Mattresses are relatively heavy items. The weight of a mattress varies as a function of the coil core, the gauge of the coil and the type of foam material used. An average king size mattress weighs between 85 and 115 pounds. High end king size mattresses with latex or memory foam can weigh as much as 300 pounds (http:/www.mattressdirectonline.com).
In order to rotate a mattress, the mattress must first be lifted and then rotated, As such, rotating a mattress is hard work. Depending on the weight of the mattress, rotating a mattress can be virtually impossible for some people, such as senior citizens, as well as people that are handicapped or disabled and others.
In order to address this problem, mattresses with removable pillow tops have been developed. An example of such a mattress is disclosed in U.S. Pat. No. 5,414,882. The 882 patent discloses a mattress with a pillow top that is secured to the top cover of the mattress by way of a zipper. With such a configuration, the pillow top can be relatively easily rotated by unzipping the pillow top, rotating it and zipping the pillow top back in place. While such a configuration enables body depressions in the pillow top to be relocated, it has no affect on body depressions that result in the mattress itself. Thus there is a need for a system to facilitate rotation of a mattress.
Briefly, the present invention relates to a system for facilitating rotation of a mattress in a horizontal plane carried by a box spring or a platform. In order to facilitate rotation, slick surfaces between the mattress and the box spring or platform are selectively placed in engagement with each other. In one embodiment of the invention, the slick surfaces may be provided by two (2) separate covers; one for the mattress and one for the box spring or platform. One cover is provided with a slick and non-slick surface. The other cover is provided with at least one slick side and may have two slick sides. In an alternate embodiment, one cover may be a protective cover that encapsulates the entire mattress and permanently exposes a slick surface relative to the box spring or platform. Alternatively, one cover may be provided that cooperates with a slick surface that is integrally provided on one or the other of the mattress or box spring or platform. In an alternate embodiment of the invention, slick surfaces may be provided on both the mattress and the box spring or platform. In this embodiment, in order to prevent movement of the mattress with respect to the box spring or platform, the mattress is secured relative to the box spring or platform by removable fasteners in a normal mode of operation.
These and other advantages of the present invention will be readily understood with reference to the following specification and attached drawing wherein:
a is a partial isometric view of a material blank for use as a cover with the present invention, shown with fold lines on adjacent edges and an obtuse angle cut-out at one corner.
b is similar to
a is similar to
b illustrates the material blank illustrated in
c is similar to
The present invention relates to system for facilitating rotation of a top mattress in a horizontal plane. In general, slick surfaces between the mattress and the box spring or platform are selectively placed in engagement with each other. In particular, the invention relies on a reduced friction co-efficient between the box spring or platform and the mattress to facilitate rotation of the mattress in a horizontal plane. In one embodiment of the invention, as illustrated in
In the embodiments illustrated in
Referring first to
The bands 32, 34 may be formed from an elastic material, for example, spandex and other stretchable materials, such as mesh or an elastic bandina and attached to the panels 24, 26 respectively, for example, by sewing. Alternatively, the bands 32, 34 can be formed from a mesh or stretchable fabric. The bands 32, 34 can be formed from the same material as the panels 24, 26 and secured to the mattress 28 and box spring or platform 30 by way of a drawstring (not shown) or other attachment method.
The bands 32 and 34 may also be formed by less labor intensive methods, as illustrated in
A second technique to reduce labor costs is illustrated in
In accordance with an important aspect of the invention, one cover 20, 22 has a “slick” side having a relatively low co-efficient of friction and a non-slick side having a relatively higher co-efficient of friction. The other cover 20, 22 has at least one slick side and may have two slick sides. As such, when the slick surfaces of the two covers 20, 22 are selectively placed in contact with each other, the mattress 28 can be rotated in a horizontal plane with minimal effort by one person in a configuration defining a rotate mode of operation, as discussed in more detail below. The non-slick side is used to selectively be placed in contact with an uncovered surface of the mattress 28 or an uncovered surface of the box spring 30 or platform or bed skirt. The non-slick side provides a relatively high co-efficient of friction when in contact with either an uncovered surface of the box spring 30 or an uncovered surface of the mattress 28 or bed skirt (
Various materials, such as cloth, and other materials that are bendable and amenable to being folded and stored in relatively small packages, are suitable for the panels 24, 26 for the covers 20, 22. The material for one cover 20, 22 need only have a slick side and a non-slick side. The non-slick side can be created on one side of a slick material by way of a coating or sewing or fusing a non-slick backing to one side of the non-slick material. Various conventionally available materials are suitable for the cover having a slick side and a non-slick side. For example, “20 Denier Heat Sealable (backside) 100% Nylon Rip Stop” material is suitable for use with the present invention or other materials with similar coefficients of friction on the slick and non-slick sides. Such material may be nylon, for example, 100% nylon with a coating on one side, for example, urethane or other thermal plastic or heat sealable coating Such nylon rip stop material is known to come in widths of 58-62 inches wide and weighs about 1.9 to 4.4 ounces per square yard. Such material can easily be pieced together to accommodate various mattress widths if necessary.
Nylon rip stop material suitable for use with the—present invention is available from various sources, such as, Quest Outfitters of Sarasota, Fla. (http:/questouffitters.com).Their nylon taffeta material is described in detail at http://questouffitters.com/coated.html#HEAT SEALABLE , hereby incorporated by reference. Suitable nylon taffeta material is also available from Rockywoods in Loveland, Colo.(http:/www.rockywoods.com). Their nylon taffeta material is described in detail at http:/www.rockywoods.com/Fabrics-Hardware-Patterns-Kits/ medium-Weight-Ny-Ion-Fabrics/Heat-Sealable-70-Denier-Nylon-Taffeta, hereby incorporated by reference.
Non-woven materials may also be used for the cover 20, 22 having a slick side and a non-slick side. For example, Tyvek.RTM. polyethylene non-woven fabric, as manufactured by the DuPont Corporation and described in detail at http:/www2.dupont.com/Products and Services/en VN/nwn.html may be used. Other materials having two slick sides can also be used, such as, silicone impregnated nylon rip stop, for example, as available from Seattle Fabrics, Inc., www.seattlefabrics.com/nylons.html. Other materials can also be used with a coating applied to one side. Moreover, different materials can be used for each cover in an application.
Referring to
Once the mattress 28 has been rotated and is in the desired position, the top cover 20 may be detached from the mattress 28 and attached to the box spring 30 over the cover 22. This places the non-slick side of the cover 20 in contact with an uncovered surface of the mattress 28, thereby reducing unintended rotation of the mattress 28 with respect to the box spring 30. In this configuration, both covers 20 and 22 are attached to the box spring 30.Alternatively, in embodiments in which each of the covers has a slick side and a non-slick side, once the mattress 28 is in the desired position, the bottom cover 22 can be detached from the box spring 30 and attached to the mattress 28 over the cover 20, exposing the non-slick side of the cover 22 to the box spring 30. In this configuration, both covers 20 and 22 are attached to the mattress 30.
More specifically, in this application, the first cover 20 is attached to the underside of the mattress 28 so that its slick side is facing downward and its non-slick side (or alternatively its second slick side) is in contact with the mattress 28. The second cover 22 is attached to the box spring 30 over the bed skirt 36 so that its non-slick side is in contact with the bed skirt 36 and its slick side is facing upward, thereby placing the slick sides of the covers 20 and 22 in contact with each other, as shown in
In addition to the embodiments discussed above which require two covers, alternate embodiments are discussed below which require only one cover. For example, one of the covers 20, 22 may be eliminated and a slick surface incorporated into the mattress 28 or box spring 30. For discussion, assume that the box spring 30 includes an integral slick surface facing upwardly and is configured to contact the mattress 28. In this embodiment, a cover 20 as described above is attached to the underside of the mattress 28 such that the slick surface faces downwardly and the non-slick surface is in contact with the underside of the mattress 28. In a rotate mode of operation, the slick surface of the cover 20 is in contact with the slick surface integrally formed in the box spring 30. Once the mattress 28 is rotated and in the desired location, the cover 20 is attached to the box spring 30 so that the two slick surfaces are in contact with each other and the non-slick surface is in contact with underside of the mattress 28 defining a normal mode of operation.
The embodiments discussed above are based on the use of one or more covers which can be selectively configured in a rotate mode of operation or alternatively a normal mode of operation. In the embodiments illustrated in
In order to prevent movement of the mattress 28 with respect to the box spring 30 in a normal mode of operation, fastener systems , for example, Velcro fasteners, may be provided on the corners of both the mattress 28 and the box spring 30. In particular, permanent fastener strips 54 are provided on the corners of the mattress 28, as shown in
Two alternate embodiments are illustrated in
Obviously, many modifications and variations of the present invention are possible in light of the above teachings. For example, for relatively light weight mattresses, a single cover can be used with either two (2) slick sides or one slick side and one non-slick side. In such an embodiment, the invention relies on the inherent surface roughness of either the mattress 28 or box spring 30. In an embodiment with a cover having two slick surfaces, the cover is attached to either the mattress 28 or the box spring 30 and remains in place during both a rotate mode and a normal mode. In an embodiment of the invention with a cover having a slick side and a non-slick side, the cover is attached to either the mattress 28 or the box spring 30 so that the slick side faces outwardly and contacts the other of mattress 28 or the box spring 30 in a rotate mode of operation. In a normal mode of operation, the cover is attached to the other of the mattress 28 or the box spring 30 so that its non-slick side faces outwardly and contacts the inherent surface roughness of the mattress 28 or the box spring 30. Thus, it is to be understood that, within the scope of the appended claims, the invention may be practiced otherwise than as specifically described above.
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Child | 13284182 | US |