# Patent

## Title
Cushion system for a washing/bathing tub

## Abstract

A cushion system for a washing/bathing tub, comprises a cushion member having an abutment surface adapted to offer support to a user person in the tub. Magnet members are connected to the cushion. The magnet members are adapted to attractingly connect to a surface of the tub to maintain the cushion member in position against the surface of the tub.

## Background
CROSS-REFERENCE TO RELATED APPLICATION
The present patent application claims priority on U.S. Provisional Patent Application No. 60/534,375, filed on Jan. 6, 2004, by the present Applicants.


BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention generally relates to washing/bathing tub accessories and, more particularly, to a cushion system to be used in a bathtub, a spa, a shower stall, a swimming pool, a whirlpool.
2. Background Art
Tubs are well known for their primary use, namely a washroom installation in which a user person washes, bathes. Tubs have however evolved to add pleasure and comfort to practicality, and are found in many forms, such as bathtubs, spas, whirlpools. For instance, tubs are now provided with air jet systems, whirlpool systems. There is an increasing variety of products, such as bathing oils, crèmes, lotions, that emphasize the therapeutic and health-beneficial aspects of bathing.
Tubs are generally sized and shaped so as to receive at least one user person in a sitting position, or partially lying position. Such tubs define a backrest surface, upon which a user person may rest his/her upper body and his/her head.
Accessories, such as cushions, have been developed, to accommodate the bather. One known cushion consists of a cushion, such as an inflatable pocket, a foam cushion or the like, equipped with suction cups, by which the cushion may be releasably secured to the backrest of the tub.
The efficiency of the suction cups in securing the cushion to the tub is questionable. The cushion may be partially immersed into the bathing water, and the buoyancy forces on the cushion may be sufficient to dislodge the suction cups. Also, the suction cups are sandwiched between the backrest and the cushion. This creates a gap between the backrest and the cushion, which may result in accrued pressure on the suction cups as a result of the deformation of the cushion when being pressured by the bather.
Another type of cushion used in tubs is provided with hooks, clips or the like, which are received in receptacles anchored to a surface of the tub. The receptacles are in some cases glued to the surface of the tub, in which case they do not make up a solid bond, as water may infiltrate and affect the effectiveness of the bonding agent. Alternatively, some receptacles are secured directly through the surface of the tub. This results in the presence of anchoring holes in the surface of the tub. The anchoring holes may result in water infiltration, and must be patched—if the receptacles are to be removed—leaving a mark in the surface of the tub.
SUMMARY OF INVENTION
It is an aim of the present invention to provide a novel cushion system for a washing/bathing tub.
It is a further aim of the present invention to provide a cushion system for a washing/bathing tub with an increased contact surface with a surface of the tub.
It is a still further aim of the present invention to provide a cushion system having a cushion member marrying a shape of a surface of a washing/bathing tub.
It is a still further aim of the present invention to provide a cushion system for a washing/bathing tub that is secured to a surface of the tub without altering a surface thereof.
Therefore, in accordance with the present invention, there is provided a cushion system for a washing/bathing tub, comprising: a cushion member having an abutment surface adapted to offer support to a user person in the tub; and at least one magnet member connected to the cushion, the magnet member being adapted to attractingly connect to a surface of the tub to maintain the cushion member in position against the surface of the tub.



BRIEF DESCRIPTION OF THE DRAWINGS
Having thus generally described the nature of the invention, reference will now be made to the accompanying drawings, showing by way of illustration a preferred embodiment thereof and in which:
FIG. 1 is a perspective view of a cushion system for a washing/bathing tub constructed in accordance with a preferred embodiment of the present invention, as positioned within a bathtub;
FIG. 2 is a front elevation view of the cushion system of the present invention;
FIG. 3 is a rear elevation view of the cushion system of the present invention;
FIG. 4 is a perspective view of the cushion system of the present invention;
FIG. 5 is a side elevation view, partly sectioned, view of the cushion system as mounted to a wall of a bathtub;
FIG. 6 is a fragmented perspective view of a metallic plate as mounted to a hidden surface of a bathtub with the cushion system of the present invention;
FIG. 7 is a fragmented perspective view of the cushion system of the present invention having a magnetic coating on a surface of the bathtub for being secured thereto;
FIG. 8 is a perspective view of a connector portion of a magnet member in accordance with an embodiment of the present invention;
FIG. 9 is a perspective view of the connector portion having a magnet partially received therein to form the magnet member;
FIG. 10 is an enlarged perspective view of the magnet member as partially received in a cushion member of the cushion system;
FIG. 11 is a perspective view of the cushion system with one of the magnet members partially secured to the cushion member; and
FIG. 12 is a rear view of the cushion system with the magnet members in use positions.



DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring to the drawings and, more particularly, to FIG. 1, a cushion system for a washing/bathing tub in accordance with the present invention is generally shown at 10, in a bathtub 1.
The bathtub 1 has a hidden surface 2, and an exposed surface 3 which defines a water-receiving cavity 4, in which water is accumulated for a bath. The water-receiving cavity 4 of the bathtub 1 has a bottom wall 5 and a lateral wall 6, upon which the cushion system 10 is positioned. The bathtub 1 is of typical construction, and is made of materials such as enameled steel, stainless steel, cast iron, acrylonitrile-butadiene-styrene (ABS), acrylic, glass fiber or any other known material used to manufacture bath tubs.
Referring concurrently to FIGS. 2-4, the cushion system 10 is shown having a cushion member 12. The cushion system 10 is to be used for instance as a headrest for a bather, or to support the limbs, back, torso, etc . . . The cushion member 12 has an arcuate contour, with a first surface 14 and a second surface 16. The first surface 14 is the abutment surface that is exposed when the cushion system 10 is mounted to a surface of the bathtub 1 (as shown in FIG. 1). It is the surface of the cushion member 12 upon which a bather leans/lies when using the cushion system 10. The second surface 16 is the surface that is opposed to the surface of the bathtub 1 (FIG. 1) upon which the cushion system 10 is mounted.
The cushion system 10 of the present invention makes use of magnetic forces to be secured to the exposed surface 3 of the bathtub 1. The cushion system 10 has a magnetic member connected to the cushion member 12. More specifically, in the embodiment of the present invention shown in FIGS. 2, 3 and 4, the cushion system 10 has magnets 20A, 20B and 20C. The magnets 20A, 20B and 20C are within the cushion member 12 and are disposed in a triangular pattern. As will be described hereinafter, the magnets of the cushion system 10 can be disposed in any suitable pattern. The amount of magnets may vary from one to more.
In order for the cushion member 12 to be magnetically retained to a wall of the bathtub 1 (FIG. 1) by the magnets 20A, 20B and 20C, an opposite magnetic member must be present. Referring to FIG. 5, the cushion system 10 of the present invention is shown mounted to the exposed surface 3 of the lateral wall 6 of the bathtub 1. A metallic plate 22 is secured to the hidden surface 2 of the lateral wall 6 of the bathtub 1. The attraction between the magnets 20A, 20B and 20C and the metallic plate 22 is of sufficient magnitude to keep the cushion member 12 in position against the exposed surface 3 of the lateral wall 6. The metallic plate 22 is secured to the hidden surface 2 of the lateral wall 6 of the bathtub 6 by being screwed, glued, magnetized, by way of other mechanical fasteners or the like. The metallic plate 22 is on the hidden surface 2 of the bathtub 1, such that it will not be visible. Alternatively, the metallic plate 22 can be laminated into the material of the tub wall.
It is noted that the cushion member 12 illustrated in FIG. 5 marries the shape of the exposed surface 3 of the lateral wall 6 of the bathtub 1. This contact surface between the cushion member 12 and the surface of the bathtub will reduce the possibility of the cushion member 12 being unexpectedly dislodged, as will be described hereinafter.
Referring to FIG. 6, metallic plates 22A, 22B and 22C are provided as an alternative to the single metallic plate 22 of FIG. 5. As an example, such an embodiment is well suited for bathtubs in which the lateral wall 6 has a non-negligible curvature, in which case a flat one of the metallic plate 22 would not marry the shape of lateral wall 6.
In the above instances, in which opposite magnets are on opposite sides of the lateral wall of the bathtub, the magnets can be of different sizes according to the thickness of the bathtub wall, so as to provide sufficient attraction forces for the cushion member 12 to remain in place.
Referring to FIG. 7, the lateral wall 6 of the bathtub 1 has been magnetized with a coating to have the required opposite magnetic member, as shown at 23.
In some cases, the bathtub 1 is made of material that has magnetic attraction properties (e.g., enameled steel, some stainless steel types). Accordingly, in such a case, no metallic plate (e.g., metallic plate 22 of FIG. 5, metallic plates 22A, 22B, 22C of FIGS. 6 and 7) are required to keep the cushion member 12 in position against the lateral wall 6 of the bathtub 1, as the lateral wall 6 acts as the opposite magnetic member.
Although the magnets 20A, 20B and 20C are illustrated as being concealed in the cushion member 12, it is contemplated to have them partially within the cushion member 12, or even on the second surface 16 of the cushion member 12. For instance, the magnets 20A, 20B and 20C may be glued to a surface of the cushion member 12.
It is preferred however to have the magnets 20A, 20B and 20C positioned within the cushion 12, in which case the contact surface between the bathtub 1 (FIG. 1) and the second surface 16 of the cushion member 12 is maximized. In doing so, the pressure sustained by the cushion system 10 when a bather lies/leans/abuts on the cushion member 12 will be spread onto the lateral wall 6 of the bathtub 1 through the contact surface therebetween. Otherwise, in instances where the cushion member 12 is spaced from the lateral wall 6 (such as with suction cups as described in the prior art), the cushion member 12 would deform to come in contact with the lateral wall 6 upon being leaned/lied upon, possibly resulting in lateral forces on the magnets/suction cups, which ultimately could dislodge the cushion member 12.
The cushion member 12 of the cushion system 10 may hence be of various shapes and colors, so as to marry the shape of the lateral wall of the bathtub. It is also contemplated to have the cushion system 10 positioned on the bottom wall 5 of the bathtub 1 (FIG. 1), for a bather to have an abutment for his limbs.
The use of magnetic forces results in the cushion member 12 being potentially removable from the bathtub, according to the preference of a bather. This feature facilitates the maintenance of the cushion member 12.
In some cases, the cushion 12 may be at least partially submerged in the water of the bath. The magnets of the cushion system 10 must in such a case produce a magnetic force of sufficient magnitude so as to overcome buoyancy forces between the cushion member 12 and the water of the bath that would otherwise dislodge the cushion member 12.
Although the cushion system 10 is illustrated as being anchored to a surface of the bathtub 1, it is contemplated to use the cushion system 10 in other types of tubs and washing/bathing enclosures, such as spas, whirlpools, swimming pools, shower stalls.
Although the embodiments illustrated in FIGS. 2 to 7 are provided with three magnets, namely magnets 20A, 20B and 20C, it is contemplated to provide the cushion system 10 of the present invention with a single magnet (e.g., of greater size), or any other suitable amount (e.g., 2, 4, etc . . .). It is pointed out that the magnets will not damage the exposed surface of the bathtub.
Referring concurrently to FIGS. 8 and 9, a magnet member 50 of the cushion system 10 is shown. The magnet member 50 has a connector portion 52 and a magnet 54 (FIG. 9). The connector portion 52 is provided to connect the magnet 54 to the cushion member 12.
The connector portion 52 has a threaded connector 56 for being screwingly engaged in the cushion member 12, as is generally shown in FIG. 10. An adhesive is typically used on the surface of the threaded connector 56 to secure the connector portion 52 to the cushion member 12. A receptacle 58 is provided at a free end of the threaded connector 56 so as to accommodate the magnet 54, as is well shown in FIG. 9. It is pointed out that the magnet 54 is partially received in the receptacle 58 in FIG. 10.
Referring concurrently to FIGS. 10 and 11, the cushion member 12 is shown having depressions 60 in its second surface 16. Accordingly, when the magnet members 50 are secured to their use position, as is shown for magnet member 50B in FIG. 11, the magnet members 50 are accommodated within the respective depressions 60. For instance, in FIG. 12, both magnet members 50A and 50B are in their use position. This feature ensures that the contact surface between the tub wall and the cushion system 10 is maximized. A cap is then be used to conceal the magnet 54 within the receptacle 60.
The cushion member 12 is made any of a plurality of materials, from which the cushion member 12 will benefit from the characteristics. For instance, the cushion member 12 may be resilient as a user person will lie/abut thereagainst when taking a bath. The cushion member 12 may have an impermeable coating, or impermeable properties, so as not to absorb water. The cushion member 12 may be inflatable, to facilitate its storage and to offer various levels of cushioning.
It is within the ambit of the present invention to cover any obvious modifications of the embodiments described herein, provided such modifications fall within the scope of the appended claims.

## Claims

1. An assembly of a tub and cushion system for a washing/bathing tub, comprising:
a tub comprising a wall with an exposed surface defining a water-receiving cavity, and with a hidden surface;
a cushion member having an abutment surface adapted to offer support to a user person in the tub;
at least one magnet member connected to the cushion; and
at least one opposite magnetic member secured to the hidden surface of the wall of the tub in a predetermined location of the tub, with the at least one magnet member magnetically attractingly connecting to the at least one opposite magnetic member through the wall of the tub to maintain the cushion member in position at the predetermined location against the surface of the tub for the abutment surface to be exposed to serve as support for the user person;
wherein each of the magnet members has a connector portion and a magnet, the connector portion connecting the magnet to the cushion member;
wherein the connector portion has a threaded connector screwingly engaged into the cushion member; and
wherein the connector portion has a receptacle at a free end of the threaded connector for accommodating the magnet.

2. The assembly according to claim 1, further comprising an adhesive between the threaded connector and the cushion member.

3. The assembly according to claim 1, wherein the magnet is releasably accommodated in the receptacle of the threaded connector.

4. The assembly according to claim 1, wherein the depression accommodates the receptacle of the connector portion.

5. The assembly according to claim 1, wherein the at least one magnet member is accommodated in a depression of the cushion.

6. An assembly of a tub and cushion system for a washing/bathing tub, comprising:
a tub comprising a wall with an exposed surface defining a water-receiving cavity, and with a hidden surface;
a cushion member having an abutment surface adapted to offer support to a user person in the tub;
at least two magnet members connected to the cushion in a spaced-apart relation, the magnet members being within the cushion member with an exposed portion of the magnet member being coplanar with a rear surface of the cushion member such that the rear surface of the cushion member is coplanar with the surface of the tub when mounted thereto; and
at least two opposite magnetic members secured to the hidden surface of the wall of the tub in a predetermined location of the tub in a spaced-apart relation similar to the spaced-apart relation of the two magnet members of the cushion member, with each of the magnet members magnetically attractingly connecting to a respective one of the opposite magnetic members through the wall of the tub to maintain the cushion member in position at the predetermined location against the surface of the tub for the abutment surface to be exposed to serve as support for the user person.

7. The assembly according to claim 6, wherein the magnet member is concealed in the cushion member.

8. The assembly according to claim 6, wherein a surface of the cushion member opposed to the surface of the tub has a shape marrying the surface of the tub.

9. The assembly according to claim 6, wherein the predetermined location of the tub is an upper portion of a backrest of the water-receiving cavity of the tub, whereby the cushion member is used as a headrest.

10. The assembly according to claim 6, wherein the tub is a built-in tub, and the hidden surface supporting the opposite magnetic member is within a closed volume under the built-in tub.

11. The assembly according to claim 6, wherein the at least two opposite magnetic members are glued to the hidden surface of the wall of the tub.

12. The assembly according to claim 6, comprising three of the magnet members in the cushion member and three of the opposite magnet members secured to the hidden surface of the wall of the tub, the magnet members and the opposite magnet members being respectively arranged in triangular geometries in the cushion member and on the hidden wall of the tub.