FORM 2
THE PATENTS ACT, 1970 (39 of 1970) & THE PATENTS RULES, 2003
COMPLETE SPECIFICATION (See section 10, rule 13) 1. Title of the invention: CONTAINER ASSEMBLY FOR A MIXER APPARATUS
2. Applicant(s)
NAME NATIONALITY ADDRESS
BAJAJ ELECTRICALS LTD Indian 45/47, Veer Nariman Road,
Mumbai, Maharashtra 400 001,
India
3. Preamble to the description
COMPLETE SPECIFICATION
The following specification particularly describes the invention and the manner in which it
is to be performed.

TECHNICAL FIELD [001] The present subject matter relates in general to a mixer apparatus and in particular, to a container assembly for the mixer apparatus.
BACKGROUND [002] A food processor is an appliance used to facilitate repetitive tasks in the preparation of food and usually refers to an electric-motor-driven appliance. Food processors can carry out several repetitive tasks such as cutting, grinding, chopping, blending, mixing, beating etc. A mixer is a type of food processor that cuts and mixes food material in a container. A mixer has a container which comprises a blade assembly to grind or mix the food material. The blade assembly is coupled to a shaft which in turn is coupled to a motor’s shaft which rotates the blade assembly. [003] Generally, the blade assembly is coupled at the bottom of the container and the blade rotates at a very high speed to grind or mix or cut the food material in the container. After the food material is mixed or grinded, a user removes the grinded or mixed food material from the container. The mixed or grinded food material is removed from the container using a spatula or a spoon.
[004] The blade assembly in the container rotates at very high speed and causes the generation of vibrations. The resulting vibration may result in tumbling of the mixer in some cases. Further, due to presence of a single blade assembly at the base of the container, the food products may not be efficiently mixed/grinded. Also, the high-speed rotation of the blade assembly creates a lot of noise. Furthermore, as there is only one blade assembly, the space in the container is not fully utilized.
BRIEF DESCRIPTION OF DRAWINGS [005] The detailed description is described with reference to the accompanying figures. In the figures, the left-most digits of a reference number identify the figure in which the reference number first appears. The same numbers are used throughout the drawings to reference like features and components. [006] Fig. 1 illustrates mixer apparatus as known in the prior art;

[007] Fig. 2a illustrates an exploded view of a container assembly, in accordance
with an embodiment of the present disclosure;
[008] Fig. 2b illustrates a cross sectional view of the container assembly, in
accordance with an embodiment of the present disclosure;
[009] Fig. 2c illustrates slicing elements, in accordance with an embodiment of the
present disclosure;
[0010] Fig. 3 illustrates an exploded view of the container assembly, in accordance
with another embodiment of the present disclosure;
[0011] Fig. 4a illustrates an exploded view of the mixer apparatus, in accordance
with an embodiment of the present disclosure; and
[0012] Fig. 4b illustrates a perspective view the mixer apparatus, in accordance with
an embodiment of the present disclosure.
DETAILED DESCRIPTION [0013] Figure 1 shows a convention mixing apparatus 100. The mixing apparatus comprises a container 102 in which food material to be grinded/mixed is poured. The container 102 comprises a blade assembly 104 which rotates at very high speed to grind/mix the food material. Rotation of blade assembly 104 at very high speed induces vibrations in the container which can sometimes be strong enough to tumble the mixing apparatus 100. Rotation of the blade assembly 104 at very high speed also creates a lot of noise. Further, in the conventional mixer apparatus 100, as shown in the Figure 1, there is only one blade assembly 104 at the bottom of the container and thus, the material is often not efficiently mixed/grinded. Moreover, as the blade assembly 104 is attached to the base of the container 102, it is difficult for a user to scoop out the materials from the container 102.
[0014] The present subject matter provides a container assembly which can be attached with a mixer apparatus and can be used to grind/mix food material. The container assembly comprises a first container and a first shaft. The first container and the first shaft are arranged such that the first shaft protrudes from a base of the first container, from a recess provided in the base of the first container.

Further, the container assembly comprises a second container which is positioned within the first container and is detachably coupled to the first shaft. The second container comprises a plurality of coupling elements on an inner periphery of the second container to detachably couple a plurality of slicing elements. Further, according to an example of the present subject matter, the container assembly comprises a second shaft protruding through a base of the second container. A rotatable element is attached to the second shaft. As will be understood, the first shaft and the second shaft may be connected to a motor that drives the two shafts. In an embodiment, the second shaft can be made operational with the first shaft in stationary position.
[0015] In operation, the food material to be processed is poured in the second container and the first shaft rotates with the second container along with and the plurality of slicing elements on the periphery of the second container, slices the food material. Further, in an example, the rotatable element may also be rotated by the second shaft to route the food material towards the plurality of slicing elements. The plurality of slicing elements can thus effectively slice the food material. As the second container also rotates or with the plurality of slicing elements on its periphery, the speed requirement is lesser when compared to the single blade configuration and thus, there is less noise and less tumbling forces acting on the mixer apparatus. [0016] Although the subject matter has been explained in the context of figures that depict a household mixer, it will be understood that the subject matter may be extended to any mixer that includes a container assembly.
[0017] Aspects of the present subject matter related to the container’s assembly of a mixer apparatus will now be described in detail in conjunction with the following figures. It should be noted that the description and figures merely illustrate the principles of the present subject matter along with examples described herein and should not be construed as a limitation to the present subject matter. It is thus understood that various arrangements may be devised that, although not explicitly described or shown herein, embody the principles of the present subject matter.

Moreover, all statements herein reciting principles, aspects, and specific examples thereof, are intended to encompass equivalents thereof.
[0018] Figure 2a illustrates an exploded view of a container assembly 200, in accordance with an embodiment of the present disclosure. The container assembly 200 includes a first container 202 and a first shaft 204. The first container 202 and the first shaft 204 is arranged such that the first shaft 204 protrudes through a base 206 of the first container 202. Further, the container assembly 200 comprises a second container 208 detachably coupled to the first shaft 204. The second container 208 is held within the first container 202. In an example, the first shaft 204 may have protrusions which may engage with grooves on an outer base of the second container 208 to securely hold the second container 208. In an embodiment, the second container 208 may be optionally fitted or molded. In an example, the first container 202 and the second container 208 may be made up of material, such as stainless steel, plastic, glass fiber, or any other materials.
[0019] The second container 208 further comprises a plurality of coupling elements 210 on an inner periphery 212 of the second container 208. A plurality of slicing elements 214 are detachably coupled to the plurality of coupling elements 210. In an example, the coupling elements 210 is shown as grooves 210, however it should be understood that any other coupling means may be used. The plurality of slicing elements 214 are engaged by the grooves 210. The plurality of slicing elements 214 have sharp edges for mixing/grinding of the food material poured in the second container 208. In an example, the plurality of slicing element 214 may be made up of materials, such as stainless steel, carbon steel, alloys, plastic or any suitable hard. [0020] In operation, the plurality of slicing elements 214 slice the food material into very minute parts and mix the food material thoroughly. Further, the container assembly 200 comprise a rotatable element 216 detachably attached to a second shaft protruding through a base of the second container 208, wherein the second shaft is rotatably positioned in the second container. Further, a second shaft may protrude through a hole 218 in the first shaft 204. The rotatable element 216 may be used to

direct the food material towards the plurality of slicing elements 214. Further, in an example, the rotatable element 216 may be made up of materials, such as stainless steel, carbon steel, alloys, plastics. The working of the rotatable element 216 has been explained in detail with reference to figure 3.
[0021] Figure 2b discloses a cross sectional view of the container assembly 200 of the present subject matter. As explained earlier, the container assembly 200 comprises the first container 202 and the second container 208 within the first container 202. The first shaft 204 is protruding attached through the first container 202 to which the second container 208 may be attached. In an embodiment, the first shaft 204 is integrated with the first container 202 to which the second container 208 may be attached. The integration of the first shaft 204 with the first container 202 is facilitated through conventional methods known in the prior art. The plurality of slicing elements 214 is shown coupled on the inner periphery 212 of the second container 208. Further, the rotatable element 216 is shown attached to a second shaft 220 protruding through the base of the second container 208.
[0022] In an example, the first shaft 204 may be coupled to a motor which may rotate the first shaft 204. As the first container 202 is coupled with the first shaft 204, due to rotation of the first shaft 204, the first container 202 and second container 208 are also rotated. Due to the rotation of the second container 208 along with the first container 202, the plurality of slicing elements 214 slices the food material in the second container 208. For example, food material when poured in the second container 208 may be in a solid form. The plurality of slicing elements 214 slices the solid food material into very minute particles resulting in a powdered form or a paste form of the food material. In an example, the first container 202 may have a handle 218 which can be used by a user to hold the container assembly 200.
[0023] Figure 2c shows the slicing elements 214. In an example, although two slicing elements 214-1 and 214-2 is shown in the figure, it may be understood that there may be plurality of slicing elements. In an example, the slicing elements 214 may have a rail which may be engaged in the grooves 210 of the second container 208 to securely

hold the slicing elements 214 on the inner periphery of the second container 208. For example, a slicing element 214-1 may have a rail 214-4 which may be slid in the grooves 210 of the second container 208. The thickness of the rail 214-4 is such that the slicing elements 214-1 may be securely held on the grooves 210 of the second container 208. Similarly, a slicing element 216-2 may also comprise a rail 214-6 which can be used to engage the slicing element 214-2 in the grooves 210 of the of the second container 208.
[0024] Further, the slicing elements 214 may have projections which may have sharp edges to slice the food material. For example, the slicing element 214-1 is shown with finger like projections 214-8. The edges of the finger like projections 214-8 may have sharp edges which can slice the food material into minute pieces when the slicing elements 214 rotates with the second container 208. It should be understood that the slicing elements 214 may have a different shape than what is shown in the Figure, which is merely an example.
[0025] Figure 3 shows an expanded view of container assembly 300 in accordance with another example implementation of the present subject matter. As explained previously, and similar to the container assembly 200, the container assembly 300 comprises a first container 302 wherein a first shaft 304 protrudes through a base of the first container 302. In an example, a recess or an opening may be located at the base of the first container 302 for the first shaft 304. A second container 306, similar to the second container 208, is also shown in the figure. The second container 306 is held within the first container 302. In an example, the second container 306 may be held within the first container 302 and coupled to the first shaft 304. In an example, the first shaft 304 may have coupling elements which may be used to couple the second container 306 to the first shaft 304 within the first container 302. In another example, the first shaft 304 may have protrusions which may engage with corresponding grooves provided on an outer base of the second container 306 to securely hold the second container 306. The first shaft 304 rotates the first container 302 along with the second container 306.

[0026] Further, second container 306 may have plurality of grooves 308 which may be used to securely hold a plurality of slicing elements 310 on an inner periphery 312 of the second container 306. The function of the plurality of slicing elements 310 is same as that of the plurality of slicing elements 214 as described with reference to previous figures.
[0027] A rotatable element 314, may also be coupled to a second shaft 316 protruding from a base of the second container 306. The second shaft 316 may rotate the rotatable element 314. The second shaft 316 protrudes through the first shaft 304 and through the second container 306 such that the rotatable element 314 may be coupled with the second shaft 316. In an example, a hole or a recess may be provided in the first shaft 304 and the base of the second container 306 such that the second shaft 316 may protrude through the hole or the recess. The second shaft 316 is in concentric relation with the first shaft 304 and rotates concentrically with respect to the first shaft 304. The second shaft 316 is rotatably positioned in the second container 306.
[0028] In an example, the second shaft 316 may rotate the rotatable element 314 in opposite or in normal direction of the rotation of the first shaft 304. The rotation of the rotatable element 314 throws the food particles on the slicing elements 310 attached to the inner periphery 312 of the second container 306. This increases the efficiency of the grinding/mixing of the food material. In an example, the first shaft 304 and the second shaft 316 may be rotated by two separate motors. One driving motor may be coupled to the first shaft 304 and may rotate the first shaft 304 in a clockwise or anticlockwise directions and the other secondary motor may be coupled with second shaft 316 to rotate the second shaft 316 in an anticlockwise direction or vice-versa. In an embodiment, the first shaft 304 and the second shaft 316 may rotate at differential speed under the influence of movement of driving motors respectively. Further, in an example, a single motor may be used to rotate both the first shaft 304 and the second shaft 316. In such case, a driving motor may rotate the first shaft 304

by indirect coupling and the second shaft 316 may be rotated through an indirect coupling with the driving motor or vice-versa.
[0029] Further, in an example, the rotatable element 314 may also have sharp edges which, in addition to throw the food material into the slicing elements, may also cut the food materials. As the food materials are being sliced by the plurality of slicing elements 310 and the food materials are also being thrown on the plurality of slicing elements 310 by the rotatable element 314, the speed requirements are low and the food material may be efficiently sliced into minute parts. Operations at a low speed causes low noise and less vibration.
[0030] Further, the container assembly 300 may also comprise a lid 318 which may be snap fitted on the second container 306. For example, the second container 306 may comprise, engaging elements, such as protrusions which may engage snapping members of the lid 318. In operation, when a food material is being grinded/mixed in the second container 306, the lid 318 may prevent the food material from splashing out of the second container 306. In an example, the lid 318 may be made up of material, such as stainless steel, plastic, carbon steel, and other metals or alloys. [0031] Further, the second container 306 may also comprise a scooping member (not shown) detachably attached at a base of the second container 306. In an embodiment, the scooping member is detachably attached to one of slicing element of the plurality of slicing elements. In an embodiment, the bottom most slicing member of the plurality of slicing elements 301 is designed with scooping capabilities. The scooping member may be circular in shape and which may circumferentially trace the inner circumference of the second container 306 to scoop out the mixed or grinded material. In an embodiment, the scooping member may be non-circular in shape. [0032] Figure 4a shows an exploded view of a mixing apparatus 402 as an example of the present subject matter. In an example, the mixing apparatus 402 comprises a platform 406 housing a driving motor (not shown) having a driving shaft 404. Further, the mixing apparatus 402 comprises a container assembly 408, similar to the container assembly 300. The container assembly 408 comprises a first container 410

and a second container 412. A first shaft 414 is to couple to the driving shaft 404. Further, the first shaft 414 protrudes through a base of the first container 410 and the second container 412 is to detachably couple to the first shaft 414, protruding from the first container 410, such that the second container 412 is positioned within the first container 410. The second container 412, similar to the second container 306, comprises a plurality of coupling elements 416 to engage a plurality of slicing elements 418. In the Figure, the plurality of coupling elements 416 is shown as grooves 416, however, it may be understood that any other coupling means may be used. The container assembly 408 may comprise a rotatable element 420 detachably attached to a second shaft (not shown here, shown in next figure 4b) protruding from a base of the second container 412.
[0033] In an example, to operate the mixing apparatus, a user of the mixing apparatus 402 couples the plurality of slicing elements 418to the plurality of grooves 416 in the second container 412. The user, may, thereafter couple the second container 412 with the first shaft 414 protruding through the base of the first container 410. Thereafter, the user may couple the first shaft 414 with the driving shaft 404. It is to be understood that the above steps should not be construed as a limitation and each of the steps may be performed in any sequence. After, the above steps are performed, the second container 412 may stand coupled to the driving shaft 404 as shown in figure 4b. The rotatable element 420 is shown coupled to the second shaft 422. [0034] In an example, a user may pour the food material in the second container 412 and may attach a lid 424 to the second container 412. In an example, the second container 412 may comprise protrusions to snap fit the lid 424 on the second container 412. After, the lid 424 is attached to the second container 412, the mixer apparatus 402 is switched ON by pressing a switch 426-1 on a switch panel 426. The switching ON of the mixer apparatus 402 starts the driving motor (not shown) which in turn rotates the driving shaft 404. The rotation of the driving shaft 404 rotates the second container 412. The plurality of slicing elements 418 attached to the second container 412 also rotates with the second container 412 which slices the food

particles in the second container 412. In an example, there may be other switches, such as 426-2, 426-3, 426-4 to rotate the second container 412 at varying speeds. [0035] Further, the second shaft 422 may rotate the rotatable element 420. The rotatable element 420 may be rotated in the opposite or same direction of the rotation of the second container 412. In an example, the second shaft 422 may be rotated by a secondary motor. In an example, the platform 406 may house the secondary motor and the second shaft 422 may be coupled with the secondary motor to rotate the rotatable element 420. In another example, the second shaft 422 may be rotated by the driving motor through indirect coupling. In an example, a separate switch may be used to start the rotation of the second driving shaft 422. In another example, same switch may start the driving shaft and the second shaft 422.
[0036] Rotation of the rotatable element 420 in opposite direction of the second container 412 enables throwing of the food particles on the plurality slicing elements 418 which results in efficient slicing of the food materials. In an example, the rotatable element 420 may have sharp edges such that in addition to throwing of the food particles, the rotatable elements 420 may also additionally slice the food material.
According to the present subject matter, when the mixing or grinding process is completed the mixer apparatus 402 is switched OFF using the switch 426-1. The user may thereafter detach the second container 412 from the first container 410. Further, the user may detach the lid 424 from the second container 412. The user may also remove the plurality of slicing elements 418 from the grooves 416 of the second container 412.
[0037] Finally, the user can remove the mixed or grinded food material from the second container 412. In an example, the second container 412 may also comprise a scooping member to scoop out the food material from the second container 412. Due to the installation and operation of the plurality of slicing elements 418, it becomes relatively easier for the user to remove the mixed or grinded food from the container assembly.

[0038] Although implementations for container assembly are described, it is to be understood that the present subject matter is not necessarily limited to the specific features of the systems described herein. Rather, the specific features are disclosed as implementations for container assembly for a mixer apparatus.

I/We claim:
1. A container assembly comprising:
a first container;
a first shaft protruding through a base of the first container;
a second container detachably coupled to the first shaft, wherein the second container is positioned within the first container, and wherein the second container comprises:
a plurality of coupling elements on an inner periphery of the second container to detachably couple a plurality of slicing elements; a second shaft protruding through a base of the second container; and a rotatable element detachably attached to the second shaft.
2. The container assembly as claimed in claim 1, wherein the second container is rotatable with respect to the first container.
3. The container assembly as claimed in claim 2, wherein a direction of rotation of the second container is same or opposite to a direction of rotation of the rotatable element.
4. The container assembly as claimed in claim 1 further comprising a scooping
member detachably attached to one of slicing element of the plurality of slicing
elements.
5. The container assembly as claimed in claim 1, wherein the plurality of coupling elements of the second container are grooves on the inner periphery of the second container.
6. The container assembly as claimed in claim 1, wherein the rotatable elements have sharp edges for slicing.
7. A mixing apparatus comprising:
a platform to house a driving motor having a driving shaft; a container assembly comprising: a first container;

a first shaft protruding through a base of the first container, wherein the first shaft is to couple to the driving shaft;
a second container to detachably couple to the first shaft, wherein the second container is positioned within the first container, wherein the second container comprises:
a plurality of coupling elements on an inner periphery of the second container to detachably couple a plurality of slicing elements; a second shaft protruding through a base of the second container; a rotatable element detachably attached to the.
8. The mixing apparatus as claimed in claim 7, wherein the second container is rotatable with respect to the first container.
9. The mixing apparatus as claimed in claim 8, wherein the direction of rotation of the second container is same or opposite to the direction of rotation of the rotatable element.
10. The mixing apparatus as claimed in clam 7, wherein the second shaft is coupled with the driving motor via a direct or indirect coupled drive.
11. The mixing apparatus as claimed in clam 7, wherein the mixing apparatus comprises a secondary motor and the second shaft is coupled with the secondary motor.
12. The mixing apparatus as claimed in claim 7, wherein the first container comprises engaging elements to couple a lid.
13. The mixing apparatus as claimed in claim 7, wherein the plurality of coupling elements of the second container are grooves on the inner periphery of the second container.

14. The mixing apparatus as claimed in clam 7, wherein the second container
comprises a scooping member detachably attached to one of slicing element of the plurality of slicing elements.