BATH FOR WARMING HANDS AND FEET

Abstract: The bath has two vertically spaced vessels, i.e. upper and lower vessels (10,11) to be filled with the bath chemical. A layer of an anticorrosive coating is formed on the inner surface of each of the upper and lower vessels (10,11) and each of heaters (14,15) for heating the vessels (10,11), respectively, is divided into two heating members (18,19). The first heating member (18) is attached to each of the bottom surfaces of the vessels (10,11). The second heating member (19) is attached to each of the circumferential surfaces of it.

Description: FIELD OF THE INVENTION The present invention relates to a warm bath used for warming the hands and feet by soaking them in a warm bathing agent in accordance with the preamble of claim 1 and disclosed in US-A-3 760 800, and for use with a warm molten bathing agent consisting mainly of a wax. BACKGROUND OF THE INVENTION It is well known that a hot spring, in particular a mineral spring, therapy is very effective for recovering from fatigue, soothing the muscular fatigue and pain, accelerating circulation of the blood, slimming the fatness and activating the internal organs and so on. This therapy is designed to warm the body by the warm water and to accelerate warming operation of the body by absorbing mineral ions contained in warm water, thereby stimulating cells in the body and accelerating perspiration to improve metabolism. However, the hot spring therapy involves such difficulty as necessitating a patient to visit the hot spring or such disadvantage as causing a heavy burden to the heart or other parts of the body, because of soaking the entire body into a bath. When conducting the therapy, therefore, there is not only a possibility to fatigue the body but it is also not applicable to those who have a heart disease or a high blood pressure. In order to avoid such problems, the inventor has some time ago developed a novel apparatus for applying the warm bath therapy to those who have the heart disease or the like with ease at home, together with the bathing agent used therein and consisting mainly of the wax containing minerals. The warm bath and the bathing agent are for partly warming the hands and feet soaked into the bath filled with the warm molten bathing agent to realize the body warming effect, which is as good as the body bathing of the hot spring therapy. According to the experiment carried out by the inventor, however, when soaking the hands and feet into the bath, sweat and secretions are excreted from the body to erode an inner surface of the bath since they are acid. As a result, the bath becomes unusable due to erosion. In addition, according to the experiment carried out by the inventor, since the bathing agent is consisting mainly of the wax, when it is warmed and molten, a convection is not performed sufficiently inside the bath due to its viscosity. Therefore, the bathing agent temperature in the bath is not even and its precise control is difficult, resulting in such problems as scalding the hands and feet when they are soaked into a hot temperature portion, or solidifying the bathing agent at a colder portion to make the soaking difficult. It is an object of the present invention to provide the warm bath for hands and feet, which solves the above problems at once by devising the structure of the bath in which the bathing agent is filled, and arrangement of the heating portion for heating the bath. DISCLOSURE OF THE INVENTION A warm bath for hands and feet of the present invention includes the characterising features of claim 1 According to the present invention, when the bathing agent is heated and molten in the bath and the hands and feet are soaked thereinto, warming effect as good as the body bathing of the hot spring therapy can be obtained, and at the same time, recovering of fatigue, soothing of the muscular fatigue and pain, acceleration of the blood circulation, slimming of the fatness and activation of organic functions and the like can be accomplished without pressing various parts of the body including the heart as is occurred in the body bathing. Besides, a strong thermal stimulus is given simultaneously to the hands and feet studded with a plurality of meridian points, which is as efficacious as a moxibustion, and at the same time, by partially destroying a film of wax formed on the soaked hands and feet to resoak, a strong thermal stimulus can be applied locally repeatedly, resulting in an effective therapy of the affected parts. Moreover, waste materials in the body are excreted from the gaps between nails of the hands and feet to accelerate the metabolism, so that it is contributive for promoting the health of all people. Since a corrosion-resisting layer is formed on the inner surface of each container forming the bath, even if acid sweat and secretions are excreted into these containers from the body, the inner surface of the container is resistant to corrosion, thereby durability of the bath and safety of the apparatus can be considerably improved. Moreover, the heating portion is divided into the first and second heating portions, the former being disposed equivalently on the bottom of each container and the latter being disposed equivalently on the periphery thereof, so that even if circulation inside the bath is hindered by the viscosity of the bathing agent, the warm molten bathing agent temperature in the bath is uniformed and not only the temperature can be controlled precisely, but also such problems as scalding the hands and feet by the hot temperature portion or hindering the soaking of hands and feet by the solidified bathing agent in the colder portion can be totally avoided. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing a general structure of a warm bath for hands and feet in accordance with one embodiment of the present invention, Fig. 2 is a vertical sectional view of an apparatus taken along the line A-A of Fig. 1, Fig. 3 is a perspective view of a container looking from below, Fig. 4 is a vertical sectional view of a container taken along the line B-B of Fig. 3, Fig. 5 is a perspective view of an abutting member used in a warm bath for hands and feet of the present invention, Fig. 6 is a sectional view of a bath showing another embodiment of an abutting member, and Fig. 7 is an electrical circuit diagram showing a circuit configuration of a temperature control used in a warm bath for hands and feet of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION Figs. 1 and 2 show a warm bath for hands and feet 1 in accordance with one embodiment of the present invention, wherein the external and sectional views of the apparatus are respectively shown. The apparatus 1 in the drawing comprises a body 2 including an upper bath 4 for soaking the hands and a lower bath 5 for soaking the feet, and a chair 3 coupled to the front position of the body 2. The upper bath 4 and the lower bath 5 are supported in parallel vertically in two stages between two side frames 6, 7, and are both provided with containers 10, 11 having an upper openings on the upper surface of box type bodies 8, 9. In front of the body 8 of the upper bath 4, a control panel 12 having a power switch and a temperature adjusting knob and the like (not shown) is disposed, and on the body 9 of the lower bath 5, a foot rest 13 is arranged horizontally. In the bodies 8, 9 of each bath 4, 5, heaters 14, 15 for heating the containers 10, 11 are disposed respectively, thereby a bathing agent filled within each container 10, 11 is heated and molten. The heating agent is consisting mainly of a wax, into which less than 1% by weight of minerals is added and if necessary, vitamins such as vitamin E and P, an antiphlogistic such as methyl salicylate and an anodyne such as 1-menthol are added. In the embodiment, though a paraffin wax is used as the wax, it is not limited thereto, an animal wax such as a fee wax and whale wax and a vegetable wax such as a Japan wax may be used, or various waxes may be used in mixture. When the hands and feet are soaked into the warm molten bathing agent, a film of wax is formed on the soaked portion, thereby the hands and feet are heated and kept warm. A large number of meridian points distributed on the hands and feet are led to various parts of the body through meridians, thus when the hands and feet are heated and warmed by the warm molten bathing agent consisting mainly of the wax, the whole body is warmed by the thermal reaction of the meridians. In the bathing agent, more than 1% by weight of minerals such as germanium, iron, magnesium, Calcium and the like are contained, which are ionized in the warm molten liquid. The ions are absorbed into the body from the gaps between the nails and serves to warm the body further by the same function as the minerals. Each container 10, 11 in the upper and lower baths 4, 5 are, as shown in Fig. 4, formed with a corrosion and acid-resisting layer 17 on the inner surface of a stainless base material 16. The layer 17 is designed to protect the inner surface of the container against acid sweat and secretions secreted from the body, for example, if the layer 17 is formed of a silicone rubber, epoxy resin and the like, it is not only resistant to corrosion, but since it is flexible to thermal expansion of the base material 16, thermal deformation and failure of the container can be avoided. Though it has been described already that the heating portions 14, 15 are disposed respectively in the upper and lower baths 4, 5, in case of the present invention, each heating portion 14, 15 comprises a first heating portion 18 and a second heating portion 19, the former being disposed equivalently on the bottom of each container 10, 11 and the latter being disposed on the periphery thereof. In the case of the embodiment, each heating portion 18, 19 is, as shown in Figs. 3 and 4, formed with a face heater comprising a heating wire 21 such as a nickrome wire put between fireproof insulating sheets 20, 20 consisting of a silicone rubber and the like. The first heating portion 18 is arranged generally throughout the bottom of the containers 10, 11, and the second heating portion 19 is arranged entirely around the straight periphery of the containers 10, 11, wherein though the heating wire 21 of the first heating portion 18 is distributed concentrically, it is formed to heat a corner portion 22 located between the heating portions 18, 19 effectively by increasing the distributed density of the outer periphery than the other portions. In each container 10, 11 of the upper and lower baths 4, 5, an abutting member 23 for deistroying a film of wax formed on the surface of the hands and feet partly is arranged when necessary. That is, when the hands and feet soaked into the warm molten bathing agent are pulled out, the bathing solvent adhered thereto is gelatinized to form the film of wax due to the lower temperature. When the hands and feet covered with the wax film are soaked again into the warm molten bathing agent, since skins are protected by the wax film, the thermal stimulus applied to the skins is reduced as compared with the first soaking. If the wax film is destroyed at this state, the warm molten bathing agent flows into the destroyed portion, resulting in a strong thermal stimulus to the skins and the effect as good as the moxibustion can be obtained. The abutting member 23 is used to destroy the wax film and, for example, as shown in Fig. 5, formed with an annular plate 24 made of a heat-resisting resin having a circular hole 28 in the center. On the annular plate 24, a short leg piece 25 and a plurality of projections 26 are projected respectively on the lower surface and the upper surface thereof, and holes 27 for accelerating a convection of the bathing agent together with the center circular hole 28, are opened suitably in the plate. The abutting member 23 is constructed not only in such a manner as shown in the embodiment of Fig. 5, which is a submerged type, but is may be also formed as shown, for example, in Fig. 6 to project a bar body into the upper opening of the containers 10, 11. In the case of this embodiment, the wax film can be readily destroyed partly by pressing it against the tip 29 facing downwardly. In the upper and lower baths 4, 5, heat sensors 30, 31 for detecting the temperature of the warm molten bathing agent in the containers 10, 11 are provided. Responding to the result detected by the heat sensors 30, 31, a temperature control 32 (Fig. 7) to be described later is adapted to control the operation of the heaters 14, 15. The heat sensors 30, 31 shown in the drawing, are constructed in such a manner that an electric code (not shown) is inserted through a flexible pipe 33 and provided at its tip with a thermister 34, 35, a heat sensing element, which is immersed in the warm molten bathing agent in each container 10, 11 by bending the pipe downwardly. Fig. 7 shows a circuit configuration of the temperature control 32. The temperature control 32 shown in the drawing comprises a temperature adjusting circuit of a phase control type, and provided with a first control 32A for controlling the heater 14 of the upper bath 4, and a second control 32B for controlling the heater 15 of the lower bath 5. The first and second controls 32A, 32B are of an exactly identical construction, therefore, only the first control 32A will be described and that for the second control 32B will be omitted by giving the same reference characters to corresponding parts. The first control 32A comprises a power switch 36, a neon lamp 37, a noise filter 38, a full-wave rectification circuit 39, a zener diode 40, a trigger circuit 41 and a triac 42, wherein the trigger circuit 41 includes the thermister 34, a resistor R, volume resistors VR₁, VR₂, a capacitor C, a unijunction transistor 42 (hereinafter referred to as "UJT") and a transformer 44. Circuit configuration members forming the temperature control 32 are incorporated on a printed circuit board and contained in the body 8 of the upper bath 4. In the first control 32A of the above circuit configuration, to the UJT43 of the trigger circuit 41, trapezoidal wave voltage produced by clamping the full-wave rectification voltage by the zener diode 40 is applied as the driving voltage. The capacitor C in the trigger circuit 41 is charged to a pedestal voltage determined rapidly in the beginning of each half cycle of the trapezoidal wave voltage by a partial pressure of the resistance value of the temperature adjusting volume resistor VR₁ and thermister 34, and simultaneously, a charging wave form of (R + RV₁)·C determined by the resistor R, volume resistor VR₁ and capacitor C is superposed to the pedestal voltage. When the superposed voltage reaches the trigger level of the UJT43, the capacitor C is discharged and the pulse is given to a gate of the triac 42, which is then triggered at a certain conduction angle to supply power to the heater 14. If the temperature of the warm molten bathing agent in the container 10 drops, which is detected by the thermister 34 and the pedestal voltage is raised to reduce the voltage difference between the trigger level. Thus, the capacitor voltage reaches the trigger level quicker within the cycle and the trigger pulse moves in a direction to widen the conduction angle of the triac 42 and larger power is supplied to the heater 14. When the temperature of the warm molten bathing agent is increased by heating operation of the heater 14, the above operation is conducted reversely, thus the warm molten bathing agent is automatically adjusted to the prescribed temperature. INDUSTRIAL APPLICATION When using a warm bath 1 in accordance with the present invention, after filling each container 10, 11 of upper and lower baths 4, 5 with a bathing agent, heaters 14, 15 are operated to warm and molten the bathing agent. In this case, a volume resistor VR₁ of a temperature control 32 is suitably adjusted beforehand by a temperature adjusting knob on a control panel 12 so as to bring the warm molten bathing agent temperature at 47 - 55°C, preferably around 52°C. Since each heater 14, 15 comprises first and second heaters 18, 19 and the bottom of containers 10, 11 is heated by the first heater 18 and the periphery thereof is heated by the second heater 19, the whole containers 10, 11 are heated uniformly. Thus, even if a convection of the bathing agent does not take place sufficiently due to its viscosity, the temperature of the bathing agent is maintained evenly at all positions in the container, and the temperature is controlled precisely by the temperature control 32. A subject is seated on a chair 3 and hands and feet are soaked respectively into the upper and lower baths 4, 5 to conduct partial bathing. When the hands and feet are warmed, the body warming operation as good as body bathing of the hot spring therapy can be obtained due to the thermal reaction of the meridians and moxibustion operation is applied simultaneously to the body studded with the meridian points. Moreover, in this case, though acid sweat and secretions are secreted from the body into the containers 10, 11 into which the hands and feet are soaked, since the inner surface of each container 10, 11 is coated with a corrosion-resisting layer 17, they are free from any corrosion. [EXPERIMENT] A clinical experiment was conducted to subjects of 48 persons consisting of 23 males and 25 females, using a warm bath in accordance with the embodiment of the present invention. The clinical experiment was carried out first to each subject in such a manner that, subjective symptoms on fatigue, improper blood circulation, languied feeling, stiffness, neuralgia or muscular pain, appetite, gastroenteric condition and evacuation were interrogated, and thereafter, prescribed content of experiment was performed, then after the experiment, the same interrogation was made again to check the degree of restoration of the subjective symptoms. The content of experiment is to perform partial bathing of hands and feet continuously for two weeks, except Sunday, using the warm bath of the present invention. The bathing agent temperature was kept at 54°C and 12 bathings of 30 minutes each daily were counted as one treatment period. In the interrogation made after the experiment, as criteria for determining the treatment result, "very effective" indicates a complete or practical recovery, "effective" shows a tolerable recovery, "little effective" means a little improvement, "not certain" designates an uncertain improvement and "not effective indicates an ineffective result. Based upon the interrogation, the clinical results were summarized in the following table. According to the table, if criteria of "very effective", "effective" and "little effective" are counted as effective, all subjective symptoms show the effective clinical results.

Claims: A warm bath for hands and feet for warming the hands and feet soaked into a warm bathing agent, the warm bath comprising baths (4, 5) each including a respective container (10, 11), the containers being respectively disposed in upper and lower stages, a respective heater (14, 15) for heating each container (10, 11), the heater being disposed in the respective bath (4, 5) and a temperature control (32) having heat sensors (30, 31) for detecting the temperature of the warm bathing agent and controlling operation of the heaters (14, 15) dependent on the result detected by said sensors (30, 31), said heaters (14, 15) being constructed with a respective first heater disposed around the periphery of each container (10, 11), characterized in that the containers (10, 11) are made of metal and formed with a corrosion-resisting layer (17) on the inner surface thereof; and in that a respective second heater (19) is disposed on the bottom of each container and adapted to heat a bathing agent consisting mainly of wax to a molten state. A warm bath for hands and feet as claimed in claim 1, wherein said warm bath containing a warm molten bathing agent consisting mainly of a paraffin wax. A warm bath for hands and feet as claimed in claim 1 or claim 2, wherein said warm bath containing a warm molten bathing agent containing minerals such as germanium, iron and the like. A warm bath for hands and feet as claimed in claim 1, wherein an abutting member for partly destroying a film of wax formed on the hands and feet is disposed in said each container 10, 11. A warm bath for hands and feet as claimed in claim 1, wherein said heaters 14, 15 are provided on the outer surface of each container 10, 11 and formed by clamping a heating wire between fireproof insulating sheets. A warm bath for bands and feet as claimed in claim 1, wherein said heat sensors 30, 31 utilize a thermister as a heat sensing element. A warm bath for hands and feet as claimed in claim 1 or claim 6, wherein said heat sensors 30, 31 are inserted into the containers from the upper openings of each container 10, 11. A warm bath for hands and feet as claimed in claim 1, wherein said temperature control 32 is formed with a temperature adjusting circuit of a phase-control type.

Inventors: URAKAMI, HIDEAKI
Applicants: URAKAMI, HIDEAKI
Application year: 1986
Main classification: A61F7
IPC codes: A61F7, A61H33, A61H35