1. Field of the Invention
The present invention relates to foot spas. More particularly, the present invention relates to a foot spa having a number of therapeutic and convenient features incorporated into a single foot spa unit.
2. Description of the Related Art
In the prior art, there are known foot therapy massagers for providing a variety of vibrating massage sensations, both with or without fluid, and aerated bubble massage sensations, either alone or in combination. Generally, a common objective in the prior art devices is to provide relief to a user by providing soothing, therapeutic stimuli to the user's feet.
However, operation of the prior art foot therapy devices is characterized by inconvenience and requires manipulation of controls located on the foot therapy devices. Thus, any soothing, and relaxing therapeutic benefit(s) gained by use of the foot therapy device must necessarily be interrupted in order to control the device. Also, only one or two types of therapy are incorporated into the heretofore foot spas for providing relief to the user. Further, these conventional foot therapy devices are typically made from material having limited temperature tolerances, such as plastic or polymeric material. These devices suffer from poor overall heat transfer, longer heat-up time requirements, and an inability to maintain an appropriate/desired level of heat.
Therefore, there exists a need to provide a foot spa that is easily controlled and operated, unlimited by controls attached or connected to the foot spa therapy, and offering numerous types of therapeutic relief, as well as improved thermal efficiency.
It is an object of the present invention to provide a foot spa that provides therapeutic tactile sensations to aid in the overall relaxation and well-being to a user.
It is another object of the present invention to provide such a foot spa that is suitable to retain and heat a fluid with improved thermal efficiency.
It is yet another object of the present invention to provide such a foot spa to efficiently move fluid from a bottom wall of the basin of the foot spa and dispose the fluid to a point above the bottom wall, thereby creating the jetting action for massaging feet.
It is still another object of the present invention to provide a foot spa having remote activation and control capabilities.
It is still yet another object of the present invention to provide a foot spa that can be operated by the foot of a user.
It is a further object of the present invention to provide such a foot spa having a retractable cord.
It is still a further object of the present invention to provide such to a foot spa that has a housing defining a reservoir for retaining a volume of fluid, and a lid partially covering a portion of the reservoir. The foot spa can have all or any combination of the following: a wireless remote control unit for generating a signal for controlling a plurality of functions of the foot spa, a receiver for receiving the control signal, a retractable cord, an infrared heater, an in-line fluid heater, adjustable fluid jets, a spinning massage attachment function, and a control assembly operable by the foot of the user.
In accordance with the teachings of the present invention, the foot spa generally has a housing with a foot supporting bottom wall with sidewalls extending upwardly therefrom to form a reservoir for receiving and retaining a fluid. The fluid is preferably water. The foot spa also has a heater for heating the fluid as desired by a user. The heater may include an inline heater. A fluid transport assembly is provided for transporting the fluid from the bottom wall of the reservoir to a point above the bottom wall of the reservoir. Preferably, the fluid transport assembly is disposed within the housing and cooperates with the heater. The fluid transport assembly is operatively connected to a fluid inlet preferably located in or near the bottom wall or lower portion of the walls of the foot spa. The fluid transport assembly is also operatively connected to a fluid outlet disposed above and in spaced relation to the bottom wall of the reservoir. The fluid outlet and the reservoir bottom wall define a foot receiving space therebetween.
The above and other objects, advantages, and benefits of the present invention will be understood by reference to following detailed description and appended sheets of drawings.
Referring to the drawings and in particular
Referring to
In the embodiment shown in
It should be appreciated that other therapy delivery units may be incorporated into foot spa 1 in addition to, in combination with, or in lieu of infrared heater 12 and stimulus attachments 13. For example, a stone therapy unit having a stone surface capable of being heated for providing hot stone therapy and/or an ionic generator/emitter for generating charged ions and providing ionic therapy may be incorporated into foot spa 1. The stone therapy unit and the ionic generator/emitter (as well as any other types of therapy delivery units) may be disposed on any part of housing 5 in a position uncovered by fluid even when fluid is disposed in reservoir 9.
In one aspect of the present invention, the stone therapy unit and the ionic generator (as well as any other types of therapy delivery units, such as, for example, stimulus attachments 13) may be disposed on bottom wall 6 and/or sidewalls 7, in a position that may be covered by fluid when fluid is optionally placed in reservoir 9.
Preferably, attachment receptor 11 is connected to a rotating shaft of a motor disposed in housing 5 of foot spa 1. Various stimulus attachments 13 can preferably be connected to the rotating shaft of the motor (not shown) via attachment receptor 11. Operatively, stimulus attachments 13 can removably engage attachment receptor 11 for, at the user's option, providing therapeutic stimulus to a foot placed thereon. In one aspect hereof, stimulus attachments 13 are rotated by being depressed. That is, stimulus attachments 13 are preferably activated or set into a spinning motion upon being depressed.
Heat control 14 is preferably connected to heater 30 to allow the user to manipulate or control the temperature in reservoir 9.
Housing 5 preferably has aeration outlets 16 and fluid jet ports or outlets 17. Aeration outlets 16 are preferably disposed along bottom wall 6 of reservoir 9 and are preferably suitable to introduce air into a fluid in reservoir 9. Aeration outlets 16 can alternatively be disposed in any of a variety of positions along bottom wall 6 and/or sidewalls 7 to provide for different air flow patterns or therapeutic bubbling effects in the fluid. Fluid outlets 17 are preferably disposed at a forward portion of reservoir 9. Fluid outlets 17 preferably facilitate pumping and/or recycling fluid in reservoir 9. Fluid outlets 17 can be adjustable, such as pivotally mounted, so that a user can alter the direction of flow of the fluid in reservoir 9. Additionally, fluid outlets 17 can have nozzles 18 that are adjustable for varying the turbulence of the fluid that is exhausted from the outlets. One or more fluid inlets 19 are preferably disposed in bottom wall 6. As with fluid outlets 17, fluid inlets 19 are preferably part of fluid transport assembly 65 and facilitate in pumping and/or recycling fluid in reservoir 9.
Housing 5 preferably has a number of surface projections or massage nodules 20 as is shown clearly in
Referring to
Housing 5 preferably has a cover 23 like that shown in
Referring to
Heater 30 provides in-line heat or energy to the fluid as it is circulated or pumped into and out of reservoir 9. Heater 30 preferably has a heating chamber 35 integrally formed with an extrusion 36 adjacent to, and preferably parallel with, the heating chamber. As shown in
Heating chamber 35 has a substantially cylindrical shape with a first end 38 and a second end 39. First end 38 is connected to a conduit 40 and second end 39 is connected to a fluid exhaust 41. Conduit 40 is connected to pump 31. Pump 31 has a pump motor 42 and a fluid intake 43. Fluid intake 43 and fluid exhaust 41 are in fluid communication with reservoir 9, which provides a fluid path of the fluid between the reservoir, heater 30 and pump 31. Preferably, fluid exhaust 41 is connected to fluid inlet 19 shown in
Heating wire 34 is in thermal contact with undersurface 32, which preferably allows heat to transfer from the heating wire through the housing to heat the fluid in reservoir 9. Preferably, heating wire 34 is disposed in a serpentine-like shape, or other wave-like shape, along undersurface 32 to increase the contact area and improve the heat transfer between the heating wire and housing 5. Heating wire 34 is preferably disposed between flanges 44 formed along undersurface 32. More preferably, heating wire 34 is heat staked or otherwise adhered to undersurface 32 between flanges 44. Heating wire 34 transfers the energy or heat through housing 5, which limits the amount of energy or heat that can be transferred based upon the temperature tolerance of inner housing 5.
Referring to
Referring to
Accordingly, the present invention provides a method of heating fluid in a foot spa through an in-line heater 30. Heater 30 transfers heat to the fluid when the fluid is outside of housing 5. Heater 30 also transfers heat to the fluid as it flows through the heater assembly. Heater 30 is not required to transfer heat through housing 5 and can provide for more efficient heating of the fluid at higher temperatures and rates without the risk of damaging housing 5. While the embodiments shown use in-line heater 30 in conjunction with heating wire 34, the present invention also contemplates the use of the heater assembly by itself.
Turning now to the operation of foot spa 1, fluid deposited in the foot spa is optionally circulated by the fluid transport assembly in the housing. The pump preferably draws fluid deposited in the reservoir into the pump through an inlet and expels fluid into the reservoir via a “jetting” action through fluid jets (one shown in
In an aspect of the present invention, the reservoir is heated by a heater assembly and a heating wire. The heating wire is in thermal contact with the undersurface of the bottom wall, which allows heat transfer from the heating wire through the bottom wall of the housing to heat fluid in the reservoir. Preferably, the heating wire is disposed in a serpentine-like shape, or other wave-like shape, along the undersurface of the bottom wall to increase the contact area and improve the heat transfer between the heating wire and the housing. The heating wire is preferably disposed between flanges formed along undersurface of the bottom wall. More preferably, heating wire is heat staked or otherwise adhered to undersurface of the bottom wall between flanges.
The heating wire transfers energy or heat through the housing, which may limit the amount of energy or heat that can be transferred based upon the temperature tolerance of the housing. Therefore, an in-line heater assembly is preferably included to provide in-line heat or energy to the fluid as it is circulated or pumped into and out of reservoir. In-line heater assembly has a heating chamber integrally formed with an extrusion adjacent to, and preferably parallel with, the heating chamber. The extrusion has a heater disposed therein. Preferably, the area of contact between heating chamber and extrusion is made of a material with high heat transfer properties to increase the efficiency of the heat transfer from the heater to the fluid flowing through heating chamber. In this embodiment, the heating chamber and the extrusion are made from aluminum. Preferably, the heater is a cal rod heater. The cal rod heater typically is able to provide about 300 watts of energy, as compared to the heating wire type heater that is limited to about 60 watts due to the lower temperature tolerance of the housing.
In another aspect of the present invention, foot spa 1 preferably can have an aeration system with a fluid circulation network having the pump discussed above, and one or more venturi mixers, all preferably retained substantially in the housing. For example, referring to
Air and fluid is provided to the venturi mixers by a network of pipes or in connection in air/fluid communication with the air and fluid inlets. The fluid/air mixture is routed to the aeration outlets 16 for the optional provisioning of invigorating air bubbles into reservoir 9.
In the embodiment of
Roller actuator 50 may be operated to control the operation of the foot spa 1 among a number of operational modes. For example, a user may selectively rotate roller actuator 50 to cycle between (1) a fluid jet and heated mode, (2) a fluid jet and air bubble mode, and (3) a heated, fluid jet, and air bubble mode. It should be appreciated, however, that the particular functions invoked in each of the exemplary modes (1)-(3) may be varied in number and combination of features, including varying the number of modes.
In an aspect of the present invention, control switches 22 are covered by an at least partially elastic, pliable material that is preferably soft to the touch. The elastic cover preferably seals the mechanical and/or electrical components of control switches 22 from moisture and other environmental concerns such as dust and dirt. This aspect of the present invention is provided for prolonging the operational life and operation of foot spa 1.
In another aspect of the present invention, roller actuator 50 is covered in an soft elastic material, similar to that enveloping control switches 22. This aspect of the present invention also provides enhanced operational control of foot spa 1.
In a significant aspect hereof, the control switches 22 and roller actuator 50 may be manipulated (i.e., pushed and turned, respectively) by a user's foot. Accordingly, a user need not bend over to control the operational features of foot spa 1. In a preferred embodiment, all of the functions of foot spa 1 may be easily and conveniently accessed and controlled with a user's foot.
In another aspect of the present invention, operation of the foot spa is greatly eased by remote control 48, such as that shown in
Referring to
In brief, on/off control 52 is sequentially depressed to activate/deactivate operation of foot spa 1. Vibration control 53 is sequentially depressed to activate/deactivate the vibratory mechanism of foot spa 1. Bubble control 54 is sequentially depressed to activate/deactivate the aerated bubbling function of foot spa 1. Fluid-jet control 55 is sequentially depressed to activate/deactivate the fluid “jetting” function of foot spa 1. Thus, complete control of the functional operation of foot spa 1 can be accomplished without having to manipulate controls located on the foot spa. Activation or deactivation of a particular function commences generation of a control signal that is transmitted to and received by receiver 49. The control signal received by the receiver is processed to effectuate the associated function.
In another aspect of the present invention, program control 56 may be sequentially depressed in order to activate/deactivate an automated, programmed sequence of foot spa functions (e.g., vibration, bubble, and fluid-jet). The program may be predetermined (i.e., factory default) or selectively programmed by a user. In either event, the program may be associated with a time component that determines the length of time the program operates.
Referring to
In another aspect of the present invention, cover 23 can have an array of massage fingers 58 as shown in
Also, as shown in
Still further, as shown in
It should be also appreciated that the function controls discussed above are exemplary of the foot spa of the present invention and do not preclude the inclusion, exclusion, and combination of other foot spa function controls.
It should be understood that the foregoing description is only illustrative of the present invention. Various alternatives and modifications can be devised by those skilled in the art without departing from the present invention. For example, an important aspect of the present invention is the inclusion in one foot spa device the many numerous features discussed in detail above. Accordingly, the present invention is intended to embrace all such alternatives, modifications and variances.
Number | Date | Country | |
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60410454 | Sep 2002 | US | |
60410965 | Sep 2002 | US |