Claims:We Claim:
1. A food mixer 100 with base 200 and jar 300 locking arrangement, wherein the food mixer 100 comprising:
A base 200 having a polygonal receiving bore 210 at its top/upper end, to receive a jar 300, wherein the base 200 has a plurality of flat surfaces ‘a’ in the inner periphery of the receiving bore 210, placed adjacent to each to define the polygonal shape, where at least one flat surface having an electromagnet Ma;
The jar 300 with a polygonal bottom 310 to be affixed with the base, wherein the jar 300 has a plurality of flat surfaces ‘b’ at the outer periphery of the bottom, placed adjacent to each to define the polygonal shape to get received by the polygonal receiving bore, where each of the flat surfaces “b” having a magnet conducting strip Mb to get engaged securely with the Electromagnet Ma present in the receiving bore 210.
2. The food mixer 100 as claimed in claim 1, wherein the plurality of flat surfaces ‘a’ includes 4-6 flat surfaces.
3. The food mixer 100 as claimed in claim 1, wherein flat surfaces ‘a’ are in equal numbers to the flat surfaces ‘b’.
4. The food mixer 100 as claimed in claim 1, wherein the base 200 is in housed with the motor for rotating operation.
5. The food mixer 100 as claimed in claim 1, wherein the polygonal receiving bore of the base and polygonal bottom inhibit the rotating motion of the jar with respect to base when connected with the base.
6. The food mixer 100 as claimed in claim 1, wherein the electromagnet Ma of the at least one of the plurality of flat surfaces ‘a’ is get engaged with the magnet conducting strip Mb of atleast one of the plurality flat surfaces ‘b’ when connected with the base 200 to inhibit the motion of the jar with respect to base 200 due to turbulence of ingredients in the jar 300.
7. The food mixer 100 as claimed in claim 1, wherein the magnet conducting strip Mb may be a metallic strip or a ferromagnetic strip.
8. The food mixer 100 as claimed in claim 7, wherein the ferromagnetic strip Mb is of SS400 series.
9. The food mixer 100 as claimed in claim 6, wherein the electromagnet Ma is energized when voltage is supplied to the base 200 of the food mixer.
10. The food mixer 100 as claimed in claim 9, wherein the voltage (AC/DC) is in the range of 12V – 230V.
11. The food mixer 100 as claimed in claim 1, wherein the base 200 and polygonal bottom of the jar 310 is made up of plastic/ metal.
12. The food mixer 100 as claimed in claim 1, wherein the jar 300 is made up of material selected from the group consisting of plastic, glass, metal or alloy.
, Description:A FOOD MIXER WITH BASE AND JAR LOCK ARRANGEMENT USING ELECTROMAGNETS

FIELD OF THE INVENTION
[0001] The present disclosure relates to a food mixer (Liquidizers, Grinders & Blenders) with base and jar lock arrangement. More particularly, the present disclosure relates to base and jar lock arrangement using electromagnets.

BACKGROUND OF INVENTION
[0002] Blenders and similar countertop kitchen appliances generally include a jar into which food or other contents can be placed, and a base. Blades or a similar implement can be activated to operate on the contents of the jar. The jar is generally removable from the base for ease of use, ease of cleaning, or other reasons. The base contains a motor and controls for operating the appliance. The motor drives the blades in response to activation of one of the controls.
[0003] Today kitchen appliances are used day in and day out in domestic as well as commercial spaces. While operation, two types of forces are experienced on the Jar, a rotational force and an upward thrust. The rotational force is experienced due to the rotation of the motor which in turn rotates the blades and the ingredients placed in the jar. The upward thrust is experienced by the jar due to the turbulence created by the ingredients due to the rotation of the blades.
[0004] In existing products, twist lock mechanism are provided as shown in FIG. 1. It consists of a plastic male part on the Jar and a female receptor with the matching L-shaped slot in the Base Unit. The plastic male part slides into the vertical arm of the L and then rotates across the horizontal arm. In this way, the jar gets secured with the base.
[0005] In this type of lock mechanism, the user needs to carefully place the jar over the base to get the male part slide into the L-shaped slot. Also, since the bottom of the jar and the base portion receiving the jar are in circular shape, thus the rotation forces transmitted by the motor may make the jar to rotate causing the jar to accidently slides out from the L-shaped slot. Normally, jar can be locked only in one orientation and one direction. To avoid this problem, the mixer grinder is available in the market which does not have circular base.
[0006] US6609821B2 discloses blender base with food processor capabilities. The blender base includes four feet for placing the blender base on a surface such as a table. Rounded, tapered sides lead to an attachment base. An attachment protrusion is mounted on the top of the attachment base, and includes tapered sides having alternating triangular-shaped concave surfaces and convex surfaces. The bottom end of the collared jar is opened so that it fits over the attachment protrusion of the blender base. In this manner, the bottom end of the collared jar serves as a collar that fits over the attachment protrusion of the blender base. In this blender, the collared jar does not rotate when placed on the attachment protrusion of the blender base. But the user required to carefully place the jar over the base to get the jar abut against the protrusions of base. Moreover, any means for securing the jar against upward thrust due to the turbulence created by the ingredients in the Jar is not disclosed. Also the rounder and tapered sides are difficult to make which makes the design of blended complex which ultimately increases manufacturing cost.
[0007] US20150117139A1 discloses a blender jar assembly. A blender jar for use with a blending appliance includes a receptacle portion defined between an open top and a base portion. A flexibly resilient lid is removeably received at the open top and includes a central aperture which opens into the receptacle portion of the blender jar. Here, the magnetic coupling system magnetically couples the blender jar to the base portion of the blending appliance through the magnetic attraction generated between upper and lower magnetic couplers. The upper and lower magnetic couplers have a generally circular or disc configuration at a prescribed diameter, such that the blender jar will properly seat on the receiving deck due to the magnetic coupling and attraction forces between the upper and lower magnetic couplers. This drawback discloses magnetic coupling between the jar and the base but no disclosure of any mechanism which can avoid the movement due to rotational force of motor.
[0008] All the above-described mixer grinder or blenders provide protection either from rotational forces or upward thrust but does not provide protection against both of them together. Protection from both type of forces is not discussed. Also, the above described mixer grinder or blenders required precise positioning of jar on the base which increases the effort of user and also it makes it mandatory for the user to connect the jar with the base in only one orientation.
[0009] Further, the mixer grinder that are available in the market today and majorly directed towards right handed user, which makes it difficult for a left handed user to operate and may results in accidents.

OBJECT OF THE INVENTION
[0010] Some of the objects of the present disclosure, which at least one embodiment herein satisfy, are listed herein below.
[0011] It is a general or primary object of the present disclosure to provide a food mixer with base and jar lock arrangement which can prevent the rotation of jar placed on the base due to rotational force transmitted by the motor and the ingredients rotating in the Jar
[0012] It is another object of the present disclosure is to provide a food mixer with base and jar lock arrangement which can avoid the upward thrust due to turbulence created by food ingredients in the jar.
[0013] It is yet another object of the present disclosure is to provide a food mixer with base and jar lock arrangement which does not require precise positioning and which can reduce the user’s effort.
[0014] It is still another object of the present disclosure is to provide a food mixer with base and jar lock arrangement which has simple design.

SUMMARY OF THE INVENTION
[0015] This summary is provided to introduce the present invention which is related to a food mixer and the associated locking arrangement which securely coupled the base with the jar so that the jar remain secured during the operation of food mixer and does not come out due to the turbulence or vibrations. The invention and its embodiments are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.
[0016] The present disclosure provides a food Mixer with base and jar locking arrangement, wherein the food mixer comprising a base having a polygonal receiving bore at its top/upper end, to receive a jar, wherein the base has a plurality of flat surfaces ‘a’ in the inner periphery of the receiving bore, placed adjacent to each to define the polygonal shape, where at least one flat surfaces having an electromagnet Ma. The jar with a polygonal bottom to be affixed with the base, wherein the jar has a plurality of flat surfaces ‘b’ at the outer periphery of the bottom, placed adjacent to each to define the polygonal shape to get received by the polygonal receiving bore, where each of the flat surfaces “b” having a magnet concucting strip Mb to get engaged securely with the receiving bore.
[0017] In an embodiment, the present disclosure provides that the plurality of flat surfaces ‘a’ includes 4-6 flat surfaces.
[0018] In another embodiment, the present disclosure provides that the flat surfaces ‘a’ are in equal numbers to the flat surfaces ‘b’.
[0019] In yet another embodiment, the present disclosure provides that the base is in housed with the motor for rotating operation.
[0020] In still another embodiment, the present disclosure provides that the polygonal receiving bore of the base and polygonal bottom inhibit the rotating motion of the jar with respect to base when connected with the base.
[0021] In a further embodiment, the present disclosure provides that the electromagnet Ma of the at least one of the plurality of flat surfaces ‘a’ is get engaged with the magnet conducting strip Mb of at least one of the plurality flat surfaces ‘b’ when connected with the base to inhibit the motion of the jar with respect to base due to turbulence of ingredients in the Jar.
[0022] In a preferred embodiment, the magnet conducting strip Mb may be a metallic strip or a ferromagnetic strip.
[0023] In a more preferred embodiment, the present disclosure provides that the ferromagnetic strip Mb is of SS400 series.
[0024] In yet another embodiment, the present disclosure provides that the electromagnet Ma is energized when voltage is supplied to the base of the food mixer.
[0025] In a more preferred embodiment, the present disclosure provides that the voltage (AC/DC) is in the range of 12V – 230V.
[0026] In still another embodiment, the present disclosure provides that the base and polygonal bottom of the jar is made up of plastic/ metal.
[0027] In an embodiment, the present disclosure provides that the jar is made up of material selected from the group consisting of plastic, glass, metal or alloy.
[0028] To further understand the characteristics and technical contents of the present subject matter, a description relating thereto will be made with reference to the accompanying drawings. However, the drawings are illustrative only but not used to limit the scope of the present subject matter.
[0029] Various objects, features, aspects, and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawing figures in which like numerals represent like components.

BRIEF DESCRIPTION OF DRAWINGS
[0030] It is to be noted, however, that the appended drawings illustrate only typical embodiments of the present subject matter and are therefore not to be considered for limiting of its scope, for the invention may admit to other equally effective embodiments. The detailed description is described with reference to the accompanying figures. The illustrated embodiments of the subject matter will be best understood by reference to the drawings, wherein like parts are designated by like numerals throughout. The following description is intended only by way of example, and simply illustrates certain selected embodiments of devices, systems, and methods that are consistent with the subject matter as claimed herein, wherein:
[0031] FIGS. 1 illustrate the lock mechanism between jar and base in accordance with state of the art;
[0032] FIGS. 2 illustrate the food mixer in accordance with an embodiment of the present disclosure;
[0033] FIG. 3 illustrate a top view of square shaped base in accordance with an embodiment of the present disclosure;
[0034] FIG. 4 illustrate a top view of pentagonal shaped base in accordance with an embodiment of the present disclosure;
[0035] FIG. 5 illustrate a top view of hexagonal shaped base in accordance with an embodiment of the present disclosure;
[0036] FIG. 6 illustrates a circuit diagram for activation of motor upon secure connection of base and jar by electromagnets.
[0037] The figures depict embodiments of the present subject matter for illustration only. A person skilled in the art will easily recognize from the following description that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.

DETAILED DESCRIPTION OF INVENTION
[0038] The detailed description of various exemplary embodiments of the disclosure is described herein with reference to the accompanying drawings. It should be noted that the embodiments are described herein in such details as to communicate the disclosure. However, the amount of details provided herein is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present disclosure as defined by the appended claims.
[0039] It is also to be understood that various arrangements may be devised that, although not explicitly described or shown herein, embody the principles of the present disclosure. Moreover, all statements herein reciting principles, aspects, and embodiments of the present disclosure, as well as specific examples, are intended to encompass equivalents thereof.
[0040] The terminology used herein is to describe particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context indicates otherwise. It will be further understood that the terms “comprises”, “comprising”, “includes” and/or “including,” when used herein, specify the presence of stated features, integers, steps, operations, elements and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groups thereof.
[0041] It should also be noted that in some alternative implementations, the functions/acts noted may occur out of the order noted in the figures. For example, two figures shown in succession may be executed concurrently or may sometimes be executed in the reverse order, depending upon the functionality/acts involved.
[0042] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which example embodiments belong. It will be further understood that terms, e.g., those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
[0043] In the following detailed description of the embodiments of the disclosure, reference is made to the accompanying drawings that form a part hereof, and in which are shown by way of illustration specific embodiments in which the disclosure may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the disclosure, and it is to be understood that other embodiments may be utilized and that changes may be made without departing from the scope of the present disclosure. The following description is, therefore, not to be taken in a limiting sense.
[0044] Hereinafter, a description of an embodiment with several components in communication with each other does not imply that all such components are required. On the contrary, a variety of optional components are described to illustrate the wide variety of possible embodiments of the present disclosure.
[0045] This present disclosure provides a food mixer with the polygon pocket in place of the conventional circular pocket, which facilitates to lock the free rotational movement of jar due the rotational force exerted. Also the base and the jar are provided with electromagnets and magnet conducting strip on the inner periphery of base and outer periphery of jar respectively for engagement. The upward thrust is stopped using electromagnetic engagement.
[0046] FIGS. 2 illustrate the food mixer in accordance with an embodiment of the present disclosure. Figure shows a food mixer 100 having a base 200 and jar 300. As shown in figure, the base 200 has a bore 210 for receiving a jar 300 cut out in such a way such that the inner peripheral region comprising a plurality of flat surfaces “a” are arranged adjacent to each other and formed a polygonal shape. Similarly, the jar 300 has a bottom 310 comprising a plurality of flat surfaces “b” that are arranged adjacent to each other in such a way so that the outer periphery of the bottom 310 of the jar 300 form a polygonal shape.
[0047] FIGS. 2 also shows that at least one flat surfaces “a” having an electromagnet Ma. Preferably, these surfaces are not subsequent surface rather alternate to each other. Also, the outer peripheral polygonal bottom 310 of the jar 300 having a magnet conducting strip Mb provided on the each of the flat surfaces “b”, to get engaged securely with the Electromagnet Ma present in the receiving bore 210. The magnet conducting strip may be a metallic strip or ferromagnetic strip.
[0048] The present invention proposes new innovative design with the polygonal pocket in place of the conventional circular pocket. Matching polygonal Jar collar corresponding to the pocket shape is used either with the small ferromagnetic or metallic strip for electromagnetic locking. The polygonal receiving bore 210 of the base 200 and polygonal bottom inhibit the rotating motion of the jar with respect to base when connected with the base. Also, upon placing of the jar 300 over the base 200, the electromagnet Ma of the at least one of the plurality of flat surfaces ‘a’ is get engaged with the ferromagnetic or metallic strip Mb of at least one of the plurality flat surfaces ‘b’ to inhibit the motion of the jar 300 with respect to base due to turbulence of ingredients in the Jar 300.
[0049] The food mixer in accordance with the present disclosure may have 4-6 flat surfaces ‘a’ and flat surfaces ‘a’ are in equal numbers to the flat surfaces ‘b’, so that engagement can take place. The embodiment of food mixer which has 4 flat surfaces ‘a’ and 4 flat surfaces ‘b’ forms a square shaped base bore and square shaped jar bottom. The top view of square base bore is shown in FIG. 3.
[0050] Similarly, the embodiment of food mixer which has 5 flat surfaces ‘a’ and 5 flat surfaces ‘b’ forms a pentagonal shaped base bore and pentagonal shaped jar bottom. The top view of pentagonal base bore is shown in FIG. 4. Further, the embodiment of food mixer which has 6 flat surfaces ‘a’ and 6 flat surfaces ‘b’ forms a square shaped base bore and hexagonal shaped jar bottom. The top view of hexagonal base bore is shown in FIG. 5.
[0051] The food mixer in accordance with an embodiment of the present disclosure has the base having a housing, and the receiving bore is casted upon the housing and the base in housed with the motor for rotating operation. The bore is meant for receiving the jar. The jar is made up of material selected from the group consisting of plastic, glass, metal or alloy. The base and polygonal bottom of the jar is made up of plastic/ metal.
[0052] The outer periphery of the polygonal bottom of the jar is provided with the ferromagnetic strip Mb of SS400 series. At least a part of inner periphery of the bore of the base having electromagnets. Thus, the electromagnet Ma is energized when voltage is supplied to the base of the food mixer. The food mixer 100 is operable with the voltage (AC/DC) is in the range of 12V – 230V. The circuit diagram of internal connection of base is shown in FIGS. 6.
TECHNICAL ADVANTAGES
[0053] This food mixer disclosed in the present disclosure adds to the comfort to the user in the locking / unlocking the jar, making the process hassle free. This invention helps the user to simply Plug and Play the jar, facilitating single handed operation. The polygonal pocket gives the user freedom to simply plug the Jar in any orientation. This invention helps the user to simply Plug and Play the jar on the unit with single hand.
[0054] Together, the polygonal (square) pocket and the electromagnetic locking, makes locking arrangement effortless by facilitating the user to plug and play the jar unit in contrast to the hassle of locating the locks and rotating the jar in the slot provided in base unit. User does not have to use force to lock or unlock the jar unit from the base unit. This invention also helps to address the issues of loose lock as a result of wear and tear of plastic mating parts as in the conventional appliances. User can use the jars in any orientation thus making the whole arrangement more accessible as per the comfort of user.
Examples
[0055] The food mixer with the electromagnetic locking arrangement is tested and observation has been recorded. The Jar was tested with different levels of water with the base unit. No locking failure observed. The observation are tabulated as below:
S. No Iteration Normal Usage Abnormal Usage
Run Time Results Run Time Results
1 200 ml water 2 mins Jar not coming out 6 mins Jar not coming out
2 400 ml water 2 mins Jar not coming out 6 mins Jar not coming out
3 600 ml water 2 mins Jar not coming out 6 mins Jar not coming out
4 800 ml water 2 mins Jar not coming out 6 mins Jar not coming out
5 1000 ml water 2 mins Jar not coming out 6 mins Jar not coming out
Table 1

Equivalents
[0056] The foregoing description of the preferred embodiment of the invention has been presented for illustration and description. It is not intended to be exhaustive, nor is it intended to limit the invention to the precise form disclosed. It will be apparent to those skilled in the art that the disclosed embodiment may be modified in light of the above teachings.