Patent Application
20180310748
The present invention relates to electric kettles for water or beverages, and still more particularly—to a kettle having two heating modes. This invention may be especially suitable for a clientele who need specific electric utensils to be used in accordance with religious customs.
Various types of electric heaters for heating water and other liquids are known in the art, and are intended for use by the regular civil clientele. Electric kettles are known and used daily to boil water for beverages and cooking. A standard electric kettle for liquids usually has a kettle body and a base for feeding the kettle body with electricity; a standard electric kettle is normally provided with a manually operated electric switch.
Anybody who uses electric kettles is aware that maintaining the water at a desirable temperature for a long period of time is quite a problem.
Moreover, lifting of the kettle from the base (for example, to use some water) usually stops the heating process.
It should also be noted that there exists a specific circle of users, which comprises people who follow the Judaism traditions by keeping Sabbath (Shabbat, i.e. Saturday) and other Jewish holidays. Such people, inter alia, observe a number of rules of the Jewish religion including those for the holy day of Saturday. Some of the rules will be mentioned specifically for understanding the concept of the invention.
One of the main rules declared for Sabbath (and for some other Jewish holidays) is not performing any work, intentionally or unintentionally. For example, switching electrical devices on/off is considered as work, while opening or closing a water tap is not. Since observant Jews are prohibited both from activating or deactivating electric appliances and from boiling water on Saturday, additional religious guidelines and customs strictly govern how heating of liquids can be still performed.
In order to have warm water under such circumstances, alternative means are required. If many gallons of warm water are required, large thermo-insulated urns may be used for boiling the water in advance to be then utilized in accordance with religious observances. The mentioned prohibitions make using a traditional electric kettle on the Sabbath/holiday impossible. Not only it cannot be switched on/off manually, it also cannot be used as an insulated container since it does not keep water hot for long periods of time, as is necessary for use during a holiday.
Another rule which is valid not only for Sabbath, but has general importance in the Jewish religion, is avoiding the use of food or beverages which are not properly prepared and thus may appear not edible (“not kosher”) under the Jewish religious law.
Usually, the people following the Sabbath religious rules try to ensure that the rules are not broken even unintentionally.
To the best of the Applicant's knowledge, there is no information on technical solutions in the prior art for an electrical kettle being simple and regularly looking but suitable for maintaining temperature of the water for a long time. In particular, there are no solutions suitable for the above mentioned clientele so as to technically allow observing the Jewish religious rules in a maximally guaranteed manner.
Presented herein is an electric kettle that addresses the above need for a device that keeps water warm for a long time and is usable, for example, in accordance with the religious guidelines and customs of the Jewish Sabbath.
In the present description, the terms “kettle or heater” will be used interchangeably, as well as the terms “water” and “liquid” and the terms “holiday” and “Sabbath”, to preserve general character of the statements.
Embodiments of the electric kettle of the present invention have a base for transmitting electricity to the heating element of the kettle, usually via a central electric contact. The embodiments have a boiling mode in order to bring the water to its boiling temperature and a warmer mode that maintains the water at a predefined temperature that is above the ambient air temperature.
The boiling mode is a regular mode which may be selected by manually activating a regular electric switch of the kettle.
The warmer mode may be selected by pressing an additional electric knob (a so-called warmer knob), which may be provided on the kettle. The warmer mode supposes that the water in the kettle may be maintained at a selected temperature, using an internal circuit comprising a thermostat or another temperature controlling circuit.
Depending on the kettle design and/or on the user's preferences, the boiling mode may be automatically followed by the warmer mode.
In addition, embodiments of the present invention may be equipped with a locking mechanism having two positions which respectively correspond to two states of the kettle: unlocked and locked. The positions of the locking mechanism may be manually selectable. In the unlocked state, the kettle is mechanically separate from the base (even if the kettle is placed on the base). In the locked state, the kettle is attached/secured to the base such that the kettle and the base function as a single unit (even when the kettle is lifted by a user, it will be lifted with the base).
Alternatively or in addition, the warmer mode may be initiated by manually selecting a position of the locking mechanism. It can be possible if the temperature controlling circuit serving the warmer mode is designed to be controllable by the locking mechanism.
Still alternatively or in addition, selection of the warmer mode by pressing the additional electric knob, may automatically control the locking mechanism and thus cause securing of the kettle and the base to one another. It can be effected if electro-magnet(s) are provided to secure the kettle to the base whenever the warmer mode knob is pressed.
The option of interconnecting the locking mechanism and the warmer knob by mutual control lines allows ensuring that the desired warmer regime with the locked kettle will be selected even if only the warmer knob or only the locking mechanism is manually activated by the user. It adds extra-security features to prevent switching the conventional heating element ON/OFF by the user, when it is not desired (say, during Shabbat or another holiday).
According to the invention, when the warmer mode is selected and when the kettle and the base are in the locked position, the base is secured to the kettle and thus the central electric contact there-between remains ON. The user may therefore lift the kettle together with the base from a table, use some water and return the kettle to the table, which action will not disturb the electric contact, so that the warmer mode will continue.
At least the main body of the kettle may be made transparent.
The kettle may be provided with a temperature sensor (for example an infra-red sensor) adapted to provide light indication to allow visually informing the user about condition of the water in the kettle. Actually the temperature sensor allows detecting temperature of the water in the kettle and then indicating at least one preselected temperature value by emitting light of at least one color, respectively.
The sensor may comprise a temperature detecting portion (for example, an infra-red sensor) and a light emitting portion being controlled by the temperature detecting portion.
While the water temperature detecting portion of the sensor should be as close to the water as possible (i.e., may be inside the kettle or on the outer wall of the kettle), the light emitting portion of the sensor may be placed on the outer wall, on the lid or on the handle of the kettle.
If the kettle body is made transparent, the temperature sensor may be positioned so as to illuminate the water in the kettle (either from inside or from outside of the kettle), by the light emitted whenever the temperature in the kettle reaches a preselected value.
Colored light may be produced by the light sensor at any mode of the kettle, and the color may be selected from a number of possible options, for example: the cold or room temperature water may be indicated by a first light color, the pre-selected (warmer) temperature—by a second color, the boiling water—by a third color.
In one specific embodiment, the kettle is transparent, the sensor is installed so as to illuminate the water in the kettle, and one specific temperature is indicated by a specific color of light emitted by the temperature sensor when the water in the kettle reaches that specific temperature.
The kettle according to the present invention may therefore be used in accordance with the religious guidelines and customs as discussed above.
The subject matter regarded as the invention will become more clearly understood in light of the ensuing description of embodiments herein, given by way of example and for purposes of illustrative discussion of the present invention only, with reference to the accompanying drawings, wherein
The drawings together with the description make apparent to those skilled in the art how the invention may be embodied in practice.
No attempt is made to show structural details of the invention in more detail than is necessary for a fundamental understanding of the invention.
It will be appreciated that for simplicity and clarity of illustration, elements shown in the figures have not necessarily been drawn to scale. For example, the dimensions of some of the elements may be exaggerated relative to other elements for clarity.
Further, where considered appropriate, reference numerals may be repeated among the figures to indicate corresponding or analogous elements.
The kettle 10 is a novel dual mode kettle which is especially suitable for use in accordance with the religious guidelines and customs previously discussed. The novel function is achieved by equipping kettle 10 of the present invention with a locking mechanism that allows the body of kettle 10 to be secured to its base 20.
In
One example of such a locking mechanism may be seen in
The kettle 10 has a main knob 12 for initiating the regular boiling heating mode. Actually, any other switch may be provided for that, for example a main knob on the basis. An additional (warmer) knob 14 may be provided and used for selecting the warmer regime by activating an internal temperature-maintaining electric circuit (not shown in
The locking elements 40, 42 may be activated by the warmer knob 14 and/or by slightly turning the base around the kettle to place the locking elements 40, 42 one in front of the other. In other embodiment(s), other type of means (say, another knob or another locking device may be used for clamping the kettle with the basis.
In the present description, the term “embodiment” is an example or implementation of the invention. The various appearances of “one embodiment,” “an embodiment” or “some embodiments” do not necessarily all refer to the same embodiments.
Although various features of the invention may be described in the context of a single embodiment, the features may also be provided separately or in any suitable combinations. Conversely, although the invention may be described herein in the context of separate embodiments for clarity, the invention may also be implemented in a single embodiment.
Reference in the specification to “one embodiment”, “an embodiment”, “some embodiments” or “other embodiments means that a structure, or a characteristics described in connection with the embodiments is included in at least one embodiment, but not necessarily in all embodiments of the invention. It is to be understood that the phraseology and terminology employed herein is not to be construed as limiting and is for descriptive purpose only.
The principles and uses of the teachings of the present invention may be better understood with reference to the accompanying description, figures, and examples.
It is to be understood that the details set forth herein do not construe a limitation to an application of the invention. Furthermore, it is to be understood that the invention can be carried out or practiced in various ways and that the invention can be implemented in embodiments other than the ones outlined in the description below.
It is to be understood that the terms “including”, “comprising”, “consisting” and grammatical variants thereof do not preclude the addition of one or more components, features, steps, integers or groups thereof and that the terms are not to be construed as specifying components, features, steps or integers.
The phrase “consisting essentially of”, and grammatical variants thereof, when used herein is not to be construed as excluding additional components, steps, features, integers or groups thereof but rather that the additional features, integers, steps, components or groups thereof do not materially alter the basic and novel characteristics of the claimed composition, device or method.
If the specification or claims refer to “an additional” element, that does not preclude there being more than one of the additional element.
It is to be understood that where the claims or specification refer to “a” or “an” element, such reference is not to be construed as there being only one of that element.
It is to be understood that where the specification states that a component, feature, structure, or characteristic “may”, “might”, “can” or “could” be included, that particular component, feature, structure, or characteristic is not required to be included.
Where applicable, although state diagrams, flow diagrams or both may be used to describe embodiments, the invention is not limited to those diagrams or to the corresponding descriptions. For example, flow need not move through each illustrated box or state, or in exactly the same order as illustrated and described.
Methods of the present invention may be implemented by performing or completing manually, automatically, or a combination thereof, selected steps or tasks.
The term “method” refers to manners, means, techniques and procedures for accomplishing a given task including, but is not limited to those manners, means, techniques and procedures either known to, or readily developed from known manners, means, techniques and procedures by practitioners of the art to which the invention belongs.
The descriptions, examples, methods, and materials presented in the claims and the specification are not to be construed as limiting but rather as illustrative only.
Meanings of technical and scientific terms used herein are to be commonly understood as by one of ordinary skill in the art to which the invention belongs, unless otherwise defined.
The present invention can be implemented in the testing or practice with methods and materials equivalent or similar to those described herein.
The terms “bottom”, “below”, “top” and “above” as used herein do not necessarily indicate that a “bottom” component is below a “top” component, or that a component that is “below” is indeed “below” another component or that a component that is “above” is indeed “above” another component. As such, directions, components or both may be flipped, rotated, moved in space, placed in a diagonal orientation or position, placed horizontally or vertically, or similarly modified. Accordingly, it will be appreciated that the terms “bottom”, “below”, “top” and “above” may be used herein for exemplary purposes only, to illustrate the relative positioning or placement of certain components, to indicate a first and a second component or to do both.
Embodiments of kettle 10 of the present invention operate according to known in the art technology. That is, kettle 10 may be partially or completely filled with water and placed on base 20, which operatively connects to the heating element (not shown) contained in the body of kettle 10. Selecting the boiling mode enables the heating element to be activated, which in turn, heats the water and brings it to a boil. In this mode, once the water is boiling, an automatic shut off will deactivate kettle 10. If, in addition to selecting the boiling mode, the warmer mode is selected, after the water is brought to a boil, kettle 10 will maintain the water at a predetermined temperature until kettle 10 is turned off.
Alternatively, according to some embodiments, if only the warmer mode is selected, the water may be warmed but not brought to a boil.
The warmer mode may be selected by pressing the warmer knob 14 which activates a control circuit for controlling the heating element. The control circuit may comprise a thermostat or a different control means (not shown in
As shown in
According to yet other embodiments, the locking mechanism may comprise, for example, at least one clip mounted on the side of base 20 that affixes base 20 to the bottom of kettle 10. Another example of a locking mechanism may comprise, for example, at least one toggle-type latch affixed to the body of kettle 10 that slides into a receiving receptacle on base 20. In addition to the exemplary locking mechanisms presented herein for securing base 20 to kettle 10, other suitable methods may also be used.
As marked in
As mentioned above, the warmer mode may be selected and activated by the warmer knob 14. This option is illustrated by the functional diagram shown in
However, (alternatively or in addition to the knob 14) the warmer mode may be selected and activated automatically, whenever the kettle 10 is secured to the base 20.
Such an option is illustrated in
The warmer knob 14 may be absent, or may exist to produce a spare control signal.
Similarly, the locking means 16 may be the above-mentioned universal mechanism comprising not only the conductive elements capable of producing a control signal, but also simple mechanical locking elements. The kettle will be thus double-secured to ensure the desired warmer mode and to exclude any unintentional switching on/off of the kettle by the user.
Still further,
It should be noted that both the temperature sensing portion and the light emitting portion of the sensor may have more than one pre-selected temperatures which can be detected and indicated. In such a case, two or more different temperatures may be detected by the sensor (for example, the boiling temperature and a pre-selected warming temperature), and then—indicated by the light emitting portion of the sensor, using different colors of light (for example, using different light emitting diodes.
While the invention has been described with respect to a limited number of embodiments, these should not be construed as limitations on the scope of the invention, but rather as exemplifications of some of the embodiments. Those skilled in the art will envision other possible variations, modifications, and applications that are also within the scope of the invention. Accordingly, the scope of the invention should not be limited by what has thus far been described, but by the appended claims and their legal equivalents. Therefore, it is to be understood that alternatives, modifications, and variations of the present invention are to be construed as being within the scope and spirit of the appended claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 252059 | May 2017 | IL | national |
