Electric coaster

Abstract

To provide an electric coaster including a heat generation part (2), so that an existing cup (3) does not become cold to allow a user to drink hot coffee while hot as in a preferable conventional general manner of completing drinking the coffer before becoming cold.SOLUTION: An electric coaster of the present invention comprises an outer frame (1) and a heat generation part (2). The heat generation part (2) is provided inside the outer frame (1). The heat generation part (2) is disposed with: a push button switch (2a) in a center thereof; and a heat generation coil (2b) and a cord (2c) outside the push button switch.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an electric coaster that keeps partially consumed hot coffee warm. [Background technology]

[0002] In the past, it was common to make coffee using water heated to about 70 degrees and drink it before it got cold. However, when I was concentrating on reading a book or watching TV, the water quickly cooled to about 30 degrees, the same as room temperature, and I had no choice but to drink cold coffee. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Special Table 2018-516630 [Patent Document 2] Patent Publication No. 2008-178612 DISCLOSURE OF THE INVENTION [Problem to be solved by the invention]

[0004] In the past, it was common to drink coffee before it cooled down, but to maintain its temperature, people used stainless steel tins to lengthen the cooling time. Also, when using ceramic cups, people would heat them in the microwave for 30 seconds to reach about 90 degrees, then let them cool down before drinking, but this was a hassle. Also, when coffee heated to 90 degrees was heated in the microwave, only the top part was heated, and the bottom part had to be stirred at 30 degrees before it could be drunk. However, the existing cup (3) could not be heated in the microwave, so the existing cup (3) also contributed to the temperature dropping.

[0005] Therefore, the electric coaster of the present invention has a heating part (2) so that you can drink hot coffee at 70 degrees as it is, and provides an electric coaster that prevents the existing cup (3) from getting cold. [Means for solving the problem]

[0006] In order to achieve the above object, the electric coaster of the present invention is composed of an outer frame (1) and a heat generating part (2), the heat generating part (2) is located inside the outer frame (1), and the outer frame (1) supports the heat generating part (2) by reinforcing it where the end of the thread (3a) of the existing cup (3) rests, so that it does not fall over.

[0007] The heating unit (2) has a push button switch (2a) in the center, and on the outside of the push button switch (2a) is a heating coil (2b) and a thermostat (2d) to adjust the temperature of the heating coil (2b).

[0008] Then, after a certain time has passed since the switch (2a) of the electric coaster was turned on, a safety timer (2e) was activated and cut off the electricity that was wiring the coaster. Since high voltages can cause electric shock, the purpose was achieved by lowering the voltage using a transformer (2j). [Effects of the Invention]

[0009] The electric coaster of the present invention has the following advantages. (i) It can keep coffee and other drinks warm at 70 degrees. (See paragraph 0014 for details) (b) It has a push button switch so you can turn it off when you want to drink. (See paragraph 0013 for details) (c) The timer has a safety device that turns off the power if the cup is not moved for more than 10 minutes. (See paragraph 0015 for details) (2) If you want to change the set temperature from 70 degrees, set the thermostat to the desired temperature. (See paragraph 0017 for details) (e) Coasters heat from below, creating convection, so there is no need to stir with a spoon. (See paragraph 0017 for details) (f) Electric coasters use 10 volts, so the voltage is low and it is difficult to get electrocuted. (See paragraph 0037 for details) (d) When using an electric coaster, it is less likely to get cold if there are no thread ends. (See paragraph 0039 for details) (H) The electric coaster provided has an outer frame that covers the entire table. (See paragraph 0032 for details) [Brief explanation of the drawings]

[0010] [Figure 1] The figure shows a perspective view of the electric coaster in use. [Figure 2] The figure is a perspective view of an electric coaster. [Figure 3] The figure is a perspective view in which the heat generating portion is removed from the outer frame. [Figure 4] The figure shows the wiring diagram of an electric coaster. [Figure 5] The figure shows a plan view and a cross-sectional view of a heating coil made of nichrome wire. [Figure 6] The figure shows a cross section of a cup heated with nichrome wire. [Figure 7] The figure shows a plan view and a cross-sectional view of a heating coil made of spring-shaped nichrome wire. [Figure 8] The figure shows a plan view and a cross-sectional view of a heating coil formed as a filament. [Figure 9] The figure shows a plan view and a cross-sectional view of a heating coil in a single light bulb. BEST MODE FOR CARRYING OUT THE INVENTION

[0011] The electric coaster of this invention is an electric warmer that keeps coffee or other drinks placed on a table (4) warm, but does not heat water, so it is a very small device of about 100 watts. Since this electric coaster uses electricity to keep drinks warm, it draws energy from commercial power via an outlet. By drilling a hole in the table (4) and attaching a heating element (2) inside, the entire table (4) can serve as the outer frame (1), but here we will explain a movable version that uses the outer frame (1).

[0012] The electric coaster weighs about 2 kg, and an existing cup (3) is placed on it and heated from below. There are two heating methods: one is to heat the air with nichrome wire (2g), which is used in electric stoves, and the air then heats the bottom of the existing cup (3) above, and the other is to heat it by direct contact. Another method is to use a light bulb (2k), which uses the heat of the light energy emitted by the filament (2n) of the light bulb (2k).

[0013] At the center of the electric coaster is a push button switch (2a). When the push button switch (2a) is pressed and comes into contact with the bottom of the existing cup (3), electricity flows and the heating coil (2b) heats up. The size of the heating part (2) is approximately Φ50, and the end (3a) of the existing cup (3) is Φ70. The fact that the heating part (2) does not protrude from the end (3a) saves energy and prevents unnecessary consumption. When drinking coffee, the existing cup (3) is lifted, which turns off the push button switch (2a).

[0014] If the heating coil (2b) becomes too hot, there is a risk of fire, so a thermostat (2d) is attached to the end of the heating coil (2b). The thermostat (2d) is located right next to the heating part (2) and measures the temperature of the heating coil (2b) to prevent the temperature of the existing cup (3) from exceeding the set temperature of 70 degrees.

[0015] A timer (2e) is attached in a place that is not affected by the temperature of the heating coil (2b). The timer (2e) turns off if electricity flows for more than 10 minutes, so if coffee or other beverages are heated at 70 degrees for hours, they will boil over and become undrinkable, and electricity will be wasted, so the timer (2e) was installed.

[0016] Therefore, if the timer (2e) is lifted within 10 minutes to drink coffee from the existing cup (3), the push button switch (2a) will turn off and the timer (2e) will return to 0, so the electricity will be cut off 10 minutes after the existing cup (3) is returned to the outer frame (1). In this way, the timer (2e) was installed to ensure the safe use of the electric coaster.

[0017] Furthermore, by attaching a device to change the set temperature of the thermostat (2d) from 70 degrees, it is possible to set it to about 50 degrees for hot sake or about 30 degrees for lukewarm sake. Also, because the electric coaster heats from below, the heated coffee becomes lighter, rises, and flows toward the surface. This causes convection (3b), which naturally mixes the contents. Unlike heating in a microwave, where only the top of the existing cup (3) gets warm, there is no need to mix the contents. Example 1

[0018] The electric coaster of the present invention will now be described with reference to the drawings. Figure 1 is a perspective view of an electric coaster placed on a table (4), showing the existing cup (3) in dotted lines as it is actually being used. The electric coaster has an outer frame (1) with a diameter of 120 mm and a thickness of 20 mm, inside which is a heating element (2). Because the heating element (2) is 50 mm in diameter, the outer frame (1) is donut-shaped and made of rubber to prevent it from slipping. Alternatively, the outer shape of the outer frame (1) can be rectangular, or if it is a built-in one, the table (4) can take the place of the outer frame (1).

[0019] The inner heating element (2) has a push button switch (2a) in the center, and around it is a heating coil (2b) with a power consumption of 100 watts and a thermostat (2d) that keeps the temperature of the existing cup (3) at 70 degrees. Even though the power consumption is 100 watts, the present invention uses a transformer (2j) to pass a large amount of current at a low voltage of 6 volts and 17 amperes.

[0020] There is also a timer (2e) in a place that is not affected by the temperature, and this timer (2e) is a safety device that turns on the electric coaster's electricity and turns off the timer (2e) if nothing is done for 10 minutes, because the coffee will boil over if left for an hour. In other words, if you forget that you are drinking it and go out, the timer (2e) will automatically cut off the power after 10 minutes, so the coffee will not boil over.

[0021] Also, the timer (2e) has a 70 degree thermostat (2d) so if a book or other object is placed on the electric coaster and the switch (2a) is turned on, there is no risk of a fire, but there is a possibility of damaging important books, so the thermostat (2d) cuts off the power in 10 minutes, which is why the thermostat (2d) is necessary.

[0022] The timer (2e) starts counting when the push button switch (2a) is turned on, and automatically cuts off the power after 10 minutes. So, if you start drinking coffee and take a sip about two minutes later, you can simply lift the existing cup (3) to turn off the switch (2a). Then, if you place the existing cup (3) on the electric coaster, the count starts again, so there's no impact while you're drinking your coffee. Then, connect the cords (2c) to an outlet.

[0023] However, since it is not directly connected to the outlet but is connected through a transformer (2j), it is handled at a low voltage of 6 volts, so there is no risk of electric shock even if you touch the bare nichrome wire (2g). And since the existing cup (3) is a dotted line, it does not actually exist, so the top of the central push button switch (2a) is not pressed and is in the OFF state. However, when the push button switch (2a) is ON, it is pressed against the bottom of the existing cup (3) and retracts, allowing electricity to flow. This causes electricity to flow through the heating coil (2b), which generates heat.

[0024] Figure 2 is a perspective view of an electric coaster. There is a push button switch (2a) in the center, around which is a heating coil (2b), and (although not shown in the drawing) just at the end of that is a thermostat (2d); these components make up the heating part (2). The heating coil (2b) has its top scraped off like an electric stove, and either a spiral-wound nichrome wire (2g) or a spring-shaped nichrome wire is attached to it. Alternatively, there is a light bulb (2k) attached, and the light from the filament (2n) is used as a heat source.

[0025] The heating coil (2b) is generally heated with a nichrome wire (2g), but it can also be heated with a 100-watt light bulb (2k). This light bulb (2k) method converts thermal energy from the light bulb (2k) into light and heats the bottom of the existing cup (3). Even if there is space at the bottom of the existing cup (3), the light energy is transmitted and heated as is. For this reason, it is best to paint the hole (2i) where the light bulb (2k) is attached with a light-reflecting paint and paint the inside of the end of the wire (3a) black to absorb light energy.

[0026] To prevent the heating coil (2b) from getting too hot, a thermostat (2d) is provided. When the temperature of the existing cup (3) reaches 70 degrees or higher, the thermostat (2d) cuts off the power supply, preventing the temperature of the existing cup (3) from exceeding 70 degrees.

[0027] Furthermore, there is a timer (2e) (not shown in the drawing) in a place that is not affected by the heat of the heating coil (2b), and if electricity is supplied for more than 10 minutes when you forget to drink, the timer (2e) will cut off the power. Therefore, if you drink coffee once every 10 minutes, the timer (2e) will not cut off.

[0028] The timer (2e) is installed in a place where it is not exposed to heat, and it starts counting when the power is turned on and turns off after 10 minutes. Usually, about once every two minutes, the user lifts the existing cup (3) to drink coffee, which causes the push button switch (2a) to turn off the power, and the timer starts counting again from 1.

[0029] When the existing cup (3) is placed on the electric coaster, the timer (2e) starts counting from 1. Therefore, if the existing cup (3) is left on the electric coaster and you go out, there is no risk of fire because of the thermostat (2d), but the coffee will boil over, so the thermostat (2d) prevents this and wastes electricity.

[0030] Figure 3 is a perspective view of the outer frame (1) with the heat generating unit (2) removed. The outer frame (1) is provided to compensate for the small size of the heat generating unit (2), approximately Φ50, and to reinforce the heat generating unit (2) from the outside to prevent it from tipping over.

[0031] The reason why the heat generating part (2) is small is that if it is not smaller than the end of the thread (3a) of the existing cup (3), the heat generating part (2) that protrudes outside the existing cup (3) will be wasted, and if the handle of the existing cup (3) protrudes, the existing cup (3) will feel hot when held.

[0032] Therefore, if the end (3a) of the thread of a general existing cup (3) is Φ70, by attaching the heating element (2) to Φ50, the heat source will not leak. Also, the appearance of the outer frame (1) can be not only circular but also square, and the material should be non-slip, such as rubber, but it can also be made of wood or metal, and in the case of a table (4) equipped with an electric coaster, by drilling a hole (2i) on the top of the table (4) and attaching the heating element (2) there, the entire table (4) will take the place of the outer frame (1).

[0033] Figure 4 is a wiring diagram for an electric coaster. In the center is a push button switch (2a) or a light sensor switch (2a), which is drawn on the far left of the wiring diagram, and is surrounded by a heating coil (2b). In this wiring diagram, it is drawn on the far right of the switch (2a). The heating coil (2b) contains nichrome wire (2g) and the filament (2n) of the light bulb (2k), and is connected to a thermostat (2d) nearby. A timer (2e) is attached via a cord (2c) in a place that is not affected by heat, and is connected to a transformer (2j).

[0034] Below that is the earth (2f), which is connected to the transformer (2j) via the push button switch (2a) and earth (2f). The transformer (2j) has an iron core wound 30 times, and the 100 volts of the commercial power supply are wound 500 times on the iron core of the transformer (2j), reducing the voltage from 100 volts to 6 volts. 6 volts may seem like an extremely low voltage, but the stove ignition device uses a 3 volt ignition device powered by two dry cell batteries, and the nichrome wire in that ignition device heats up red hot at 3 volts, so we used double that, 6 volts. Example 2

[0035] The following describes the use of nichrome wire (2g) in the heating coil (2b). Figure 5 shows a plan view and a cross-sectional view of the heating coil (2b) made of nichrome wire (2g). The top of the figure shows a plan view, and the bottom shows a cross-sectional view of the heating part (2), with the dotted line showing only the external appearance of the heating part (2).

[0036] There is a push button switch (2a) in the center of the diagram, and from the switch (2a) to the heating coil (2b), the nichrome wire (2g) is wound in a single spiral, and the Φ0.5 nichrome wire (2g) is wound 40 times and wired to the thermostat (2d).

[0037] This method is energy efficient as it transfers heat directly, but there is a risk of electric shock if 100 volts is applied directly to the nichrome wire (2g), so a transformer is used to provide 6 volts. This is the same concept as a welding machine; if the voltage is reduced from 200 volts to 24 volts, the current increases and the voltage decreases. Because the voltage is reduced, there is no need to worry about sparks or short circuits. In the same way, even if you directly touch the nichrome wire (2g), it is usually difficult to get an electric shock at 6 volts.

[0038] Figure 6 is a cross-sectional view of an existing cup (3) being heated with a nichrome wire (2g). The existing cup (3) is placed on an electric coaster, and the area at the bottom of the existing cup (3) surrounded by the end of the wire (3a) is slightly concave. In order to place the existing cup (3) there, the switch (2a) retracts from the dotted line state to the solid line state, and the switch (2a) is energized.

[0039] Electricity then flows through the nichrome wire (2g), generating heat. There is air directly above the nichrome wire (2g), and this air heats the inside of the end of the wire (3a). However, while the end of the wire (3a) is useful for reducing the surface area placed on the cold table (4) and avoiding direct contact with the cold table (4), when using an electric coaster to warm an existing cup (3), it is better to use one without the end of the wire (3a), as the temperature of the nichrome wire (2g) is directly transferred to the cup. Therefore, the end of the wire (3a) is not necessary for this invention.

[0040] When the bottom of the existing cup (3) is heated, the liquid at the bottom of the existing cup (3) becomes warmer than the surrounding area, and the warmed liquid becomes lighter and rises to the top. Therefore, the object being heated from below causes convection (3b), which heats the entire existing cup (3), so there is no need to stir it with a spoon.

[0041] Figure 7 shows a plan view of the upper part and a cross-sectional view of the lower part, in which the heating coil (2b) is made of spring-shaped nichrome wire (2g). The figure shows a plan view at the top and a cross-sectional view of the heating part (2) at the bottom, with the two figures connected by dotted lines to show only the appearance of the heating part (2).

[0042] There is a push button switch (2a) in the middle, and the nichrome wire (2g) of the heating coil (2b) is wound in a spring shape from the switch (2a), and the Φ0.5 nichrome wire (2g) is wired to the thermostat (2d).

[0043] In this method, heat is transferred through the air, so if 100 volts were applied directly to the nichrome wire (2g), there would be a risk of electric shock, so a transformer (2j) is used to keep it at 6 volts. This is the same concept as with welding machines; if the voltage is reduced from 200 volts to 24 volts, the current increases and the voltage decreases, eliminating the risk of sparks or short circuits. Similarly, even if you directly touch the nichrome wire (2g), you will not normally be electrocuted at 6 volts, and there is no risk of burns at 70 degrees. Example 3

[0044] The following describes the usage of the light bulb (2k). Figure 8 shows the top plan view and bottom cross-sectional view of the heating coil (2b) used as the filament (2n) of the light bulb (2k). The figure shows a top plan view, with six light bulbs (2k), each 16 watts, for a total of 96 watts. Below that is a cross-sectional view of the heating element (2), and the two figures are separated by dotted lines to show only the external appearance of the heating element (2).

[0045] There is a push button switch (2a) in the middle, and the part where the wire is pointing to the switch (2a) is a rod, and when the rod moves down, the switch (2a) turns on, and the light inside the light bulb (2k) emits light, heating the bottom of the existing cup (3) placed on top. The switch (2a) is connected to the heating coil (2b), which has many filaments (2n) of the light bulb (2k), and is wired to the thermostat (2d).

[0046] This light bulb (2k) is 16 watts, and there are six of them in total, so the total is 96 watts. With this method, even if there is a space between the bottom of the existing cup (3) and the heating coil (2b), the energy is converted from the filament (2n) into light energy and transmitted to the bottom of the existing cup (3) as light energy, so the existing cup (3) is slowly heated from the bottom.

[0047] Therefore, the hole (2i) into which the light bulb (2k) of the heat generating part (2) is inserted should be made of a mirror-like material that reflects light, and if the bottom of the existing cup (3) is painted black to absorb light, light energy can be exchanged.

[0048] Figure 9 shows a plan view (top) and a cross-sectional view (bottom) of the heating coil (2b) in the form of a single light bulb (2k). The figure shows a plan view at the top and a cross-sectional view of the heating part (2) at the bottom, with the dotted lines showing only the external appearance of the heating part (2).

[0049] In the middle is the lever (2m) of the push button switch (2a), which is connected to the heating coil (2b), the filament (2n) of the light bulb (2k), and the thermostat (2d).

[0050] This light bulb (2k) is 100 watts, and this method uses a 400 watt floodlight to keep the takoyaki and okonomiyaki from getting cold. Even if a space is created between the existing cup (3) and the heating coil (2b), the energy is converted from the filament (2n) into light energy and transmitted to the bottom of the existing cup (3), so the existing cup (3) is slowly heated from the bottom.

[0051] Therefore, the hole (2i) into which the light bulb (2k) of the heat generating part (2) is inserted should be a mirror-like material that reflects light, and if the bottom of the existing cup (3) is painted black to absorb light, light energy can be exchanged. In this method, the light bulb (2k) protects the filament (2n), so a transformer (2j) is not required. Example 4

[0052] A detailed explanation of symbols and terms is provided. The outer frame (1) serves to reinforce the heating element (2) so that it does not tip over, and also to make the whole thing larger, since the heating element (2) is small. And since the end of the thread (3a) rests on the outer frame (1), in a true sense, the coaster is the part of the outer frame (1) that holds the existing cup (3) on top. The heating unit (2) is made up of a push button switch (2a), a heating coil (2b), and a thermostat (2d), and these components are collectively called the heating unit (2). The switch (2a) is a part of the heating unit (2) and is a push button type, but it also has a light sensor. When the existing cup (3) is used to cover the sensor, the light is blocked and the sensor is activated, turning on the switch (2a). However, there is a risk of malfunction when the lights in the room are turned off. The heating coil (2b) is a part of the heating unit (2), and can be made by wrapping nichrome wire around it like an electric stove, or by using a 100W light bulb to heat it from below. This light heating method converts energy into light and evenly illuminates the bottom of the existing cup (3), so it keeps the cup warm regardless of whether the bottom of the existing cup (3) is concave. The cord (2c) is used to conduct electricity to the heating element (2) and is usually made up of two wires, the other wire being earth (2f).

[0053] The thermostat (2d) is a component of the heating unit (2), and when the temperature of the heating coil (2b) becomes too high, it cuts off the power to the heating coil (2b) to maintain the temperature of the existing cup (3) at 70 degrees. Alternatively, it is possible to change the set temperature of 70 degrees. Therefore, it is installed in a position where the temperature of the heating coil (2b) can be measured. The timer (2e) is installed away from the heating coil (2b) in a location where it does not affect the temperature, and the timer (2e) has an extension period of 10 minutes, and if the existing cup (3) is not lifted within 10 minutes and the timer (2e) switch is not set to 0, the timer (2e) will cut off the power in 10 minutes. This was installed to prevent the coffee from boiling over if you forget that you had coffee and go out.

[0054] The earth (2f) is connected from the push button switch (2a) to the transformer (2j) or the outlet. The nichrome wire (2g) is a part of the heating coil (2b), and is used in tabletop stoves, etc. Tabletop stoves use a 100-volt household power supply, but in this invention, a transformer is used to make the voltage 6 volts and a large current flows through it, so the spark distance is short and it is safe. The groove (2h) is used only in Figures 5 and 6. If the nichrome wire (2g) is exposed on the top surface of the heating part (2), it would be difficult to stabilize it with the bottom of the existing cup (3). Therefore, a groove (2h) was made and the nichrome wire (2g) was attached there. The hole (2i) is for receiving the light bulb (2k), and the hole (2i) needs to have a mirror to reflect the light, so it should be painted at least silver. A transformer (2j) is a type of device that changes voltage or current. It basically consists of two magnetically connected primary coils and a secondary coil. The change in magnetic flux in the primary coil induces a voltage in the secondary coil. The coil is usually wound around a ferromagnetic material with high magnetic permeability, such as an iron core, to strengthen the magnetic coupling. Transformers (2j) are also called voltage transformers or voltage converters. For example, if the primary coil is wound 500 times and 100 volts for household use are passed through it, the voltage of the secondary coil with 30 turns will be 6 volts, making it less likely to cause electric shock, but a large current will flow through the narrow nichrome wire (2g), generating heat at an angle. The light bulb (2k) is depicted in Figures 7 and 8. The light bulb (2k) transmits heat energy to the bottom of the existing cup (3) via light. The advantage is that light energy can be transmitted even at a distance, but the energy efficiency is lower than that of the nichrome wire (2g).

[0055] A filament (2n) is a linear conductor inside a light bulb (2k) that glows when an electric current flows through it. The lever (2m) is the same as that used in Figure 8. When there is one light bulb (2k), the central push button switch (2a) is at the end, so the lever (2m) that operates the switch (2a) is made longer. The existing cup (3) is a cup that has been used conventionally, but the existing cup (3) also does not have a thread tail (3a) and is flat, which is good for the electric coaster. The end of the thread (3a) is the part at the bottom of the existing cup (3), and in the past, the end of the thread (3a) was attached to prevent the cold temperature of the table (4) from being transferred to the existing cup (3) when it was placed on the table (4). However, with an electric coaster, removing the end of the thread (3a) and allowing the electric coaster to contact the bottom of the existing cup (3) makes it easier for heat to be transferred. Convection (3b) is a phenomenon in which heat is transported by the flow of a fluid. When the flow is caused by buoyancy, such as the coffee in an existing cup (3) being heated, it is called natural convection, while when it is caused by a fan or stirrer, it is called forced convection. Therefore, the convection that occurs when the bottom of an existing cup (3) is heated is natural convection. The table (4) is a table or tray. The electric coaster attached to the table (4) is completed by drilling a hole in the table (4) and attaching the heating element (2) to it, so the entire table (4) replaces the outer frame (1). [Industrial Applicability]

[0056] This electric coaster can be used to keep coffee and other drinks warm, and can also be used to warm up cold sake. This coaster does not draw enough power to heat up drinks in a short time, but it is useful when reading a book at a leisurely pace.

[0057] Furthermore, if this electric coaster is incorporated into a table (4), the outer frame (1) is not necessary, and only the heating part (2) is required, and the entire table (4) serves as the outer frame (1). This makes the top of the table (4) neat and tidy. [Explanation of symbols]

[0058] 1 Outer frame 2 Heating unit 2a Switch 2b Heating coil 2c Cord 2d Thermostat 2e Timer 2f Earth 2g Nichrome wire 2h groove 2i hole 2j transformer 2k bulb 2n filament 2m lever 3 Existing cup 3a End of thread 3b Convection 4 tables

Claims

[Claim 1] The electric coaster is composed of an outer frame (1) and a heating unit (2). The outer frame (1) has the heat generating part (2) inside, The outer frame (1) is where the thread tail (3a) of the existing cup (3) rests, The heat generating part (2) has a switch (2a) in the center. The electric coaster is characterized in that a heating coil (2b), a thermostat (2d), and a cord (2c) are provided on the outside of the switch (2a).

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