FORM 2
THE PATENTS ACT, 1970
(39 OF 1970)
As amended by the Patents (Amendment) Act, 2005
&
The Patents Rules, 2003
As amended by the Patents (Amendment) Rules, 2006
COMPLETE SPECIFICATION
(See section 10 and rule 13)
TITLE OF THE INVENTION
Super mixing and grinding apparatus with dual rotary mechanism
APPLICANTS
Crompton Greaves Limited, CG House, Dr Annie Besant Road, Worli, Mumbai 400 030, Maharashtra, India, an Indian Company
INVENTORS
Ekram Samsul and Nirody Jai Shankar; both of Crompton Greaves Ltd, Electronic
Design Centre (EDC), Aryabhatta Building, CG Global R&D Centre, Kanjurmarg
(East), Mumbai - 400042, Maharashtra, India;
Siddiquee Qutbuddin and Sawarkar Arvind; both of Crompton Greaves Ltd,
Technology Information Centre (TIC), Global R&D Centre, Kanjurmarg (East),
Mumbai - 400042, Maharashtra, India; and
Nadkarni Mayur of Crompton Greaves Ltd, Appliances Division, Kanjurmarg
(East), Mumbai - 400042, Maharashtra, India; all Indian Nationals
PREAMBLE TO THE DESCRIPTION
The following specification particularly describes the nature of this invention and the manner in which it is to be performed.

FIELD OF THE INVENTION:
This invention relates to the field of electro-mechanical assemblies and home appliances.
Particularly, this invention relates to a mixing and grinding apparatus for food materials.
BACKGROUND OF THE INVENTION:
In the area of mixing and grinding apparatuses, there are different kinds of machines which can provide functions such as mixing, grinding and blending functions. However, there are many problems which still persist with these machines and it would be appreciated if a machine can be designed which can address all such problems in a more efficient manner.
There are many commercially available mixing and grinding apparatus being developed and manufactured by various competitors who bank or rather focus on various factors such as cost effectiveness, portability and working efficiency. Though the first developed commercially available food grinding and mixing apparatus dates back to long time ago, however, none of those machines are completely problem-free.
It is evident how important an efficient mixer and grinder is in a kitchen environment. Those who understand the finest nuances of cooking will agree that in certain recipes, there is a need to finely ground powder or paste of various spices, vegetables or fruits. The type of mixers and grinders which are currently available in the market have blades which rotate in clockwise direction or in the anti-clockwise direction and hence, cuts or grinds or mixes the food materials which comes in its path or comes in contact with the cutting blades. The concept of

gravity is ably used as the blade is fixed on the operative lower side of the vessel in which cutting / mixing / grinding is to take place. However, when the mixer jar or vessel is opened, a user may sometimes realize that the grinding or mixing has not been achieved effectively. This may be due to the fact that a mixing and grinding apparatus may lack either a good grinding functionality or may have an inefficient mixing functionality.
To overcome the limitations of the existing mixing and grinding apparatus, there is a need for an improved apparatus which is more than capable of addressing the above mentioned problems. Therefore, there is a need for an apparatus in order to provide finest grounded powder and paste by enabling grinding as well as efficient mixing.
OBJECTS OF THE INVENTION:
An object of the invention is to provide an improved mixing and grinding apparatus with a mechanism capable of proving most efficient mixing and grinding means and technique.
Another object of the invention is to reduce the time consumption in achieving mixing and grinding.
Yet another object of the invention is to provide an easy to use and operate grinding and mixing apparatus.
Still another object of the invention is to provide an improved grinding andmixing apparatus with a detachable grinding and mixing jar which is easy to clean with a dry cloth or for washing under running water.

An additional object of the invention is to provide an improved mixing and grinding apparatus which can enable the user to keep monitoring the product being mixed and ground in a transparent jar.
SUMMARY OF THE INVENTION:
According to this invention, there is provided a mixing and grinding apparatus which comprises:
(a) vessel mounted on its axis such that the axis is in an operative horizontal plane, said vessel having plurality of blades or ribs on its internal circumferential wall such that said ribs extend towards the centre of the cylindrical vessel;
(b) a dual rotary mechanism consisting of:
(i) cutting blade mounted in a co-axial operative horizontal manner with respect to said vessel, spaced apart from the walls of said vessel, said cutting blade being operated by a first driving means adapted to drive said cutting blade along said horizontal axis which is co-axial with said horizontal axis of said vessel; and
(ii) second driving means adapted to drive said vessel by rotating said vessel along its operative horizontal axis.
According to another embodiment of this invention, there is provided a mixing and grinding apparatus which comprises:
(a) vessel mounted on its axis such that the axis is in an operative horizontal plane, said vessel having plurality of blades or ribs on its internal circumferential wall such that said ribs extend towards the centre of the cylindrical vessel;

(b) a dual rotary mechanism consisting of:
(i) cutting blade mounted in an operative vertical manner in and with
respect to said vessel, spaced apart from the walls of said vessel, said
cutting blade being operated by a first driving means adapted to drive
said cutting blade along said vertical axis; and (ii) second driving means adapted to drive said vessel by rotating said vessel
along its operative horizontal axis.
Typically, said cutting blade is a mixing blade.
Typically, said cutting blade is a grinding blade.
Typically, said cutting blade is a removable blade adapted to be removable from a mounting shaft which is driven.
Typically, said apparatus includes a base which houses said first drive means and said second drive means and shafts for mounting said vessel.
Typically, wherein said first drive means and said second drive means are interconnected drive means.
Typically, said first drive means and said second drive means are interconnected
drive means by means of a gear assembly.
Typically, said vessel is a substantially cylindrical vessel.
Typically, said vessel is a detachable vessel.

Typically, said first driving means is a clockwise driving means. Typically, said first driving means is an anti-clockwise driving means.
Typically, said second driving means is a clockwise driving means.
Typically, said second driving means an anti-clockwise driving means.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS:
The invention will now be described in relation to the accompanying drawings in
which:
Figure 1 illustrates a schematic drawing of an external profile of the mixing and
grinding apparatus;
Figure 2 illustrates a schematic sectional drawings depicting the internal working parts of the mixing and grinding apparatus; and
Figure 3 illustrates a drive mechanism of the mixing and grinding apparatus.
DETAILED DESCRIPTION OF THE ACCOMPANYING DRAWINGS
According to this invention, there is provided a mixing and grinding apparatus (100).
Figure 1 illustrates a schematic drawing of an external profile of the mixing and grinding apparatus.
Figure 2 illustrates a schematic sectional drawings depicting the internal working parts of the mixing and grinding apparatus.

Figure 3 illustrates a drive mechanism of the mixing and grinding apparatus.
In accordance with an embodiment of this invention, there is provided a dual rotary mechanism for which details have been provided, further, in the specification.
In accordance with another embodiment of this invention, there is provided a vessel (V) which is a substantially cylindrical vessel and mounted on its axis such that the axis is in an operative horizontal plane. Thus, the vessel rotates about a horizontal axis.
In accordance with yet another embodiment of this invention, there is provided a plurality of blades (BL) or ribs on the internal circumferential wall of the vessel (V) such that the ribs extend towards the centre of the cylindrical vessel.
In accordance with still another embodiment of this invention, there is provided a cutting blade (CB) with is co-axially mounted with respect to the vessel, spaced apart from the walls of the vessel. The cutting blade is operated by a motor mechanism driven by an external drive. This drive is typically and preferably external to the vessel. The cutting blade may also be a mixing blade or a grinding blade. This blade is removable from a mounting shaft which is driven.
In accordance with yet another embodiment of this invention, there is provided a base (BS) which houses the drive units and shafts for mounting the vessel. The base may be an L-shaped base as shown in the accompanying drawings.
In accordance with still another embodiment of this invention, there is provided a first driving means (D1) adapted to drive the cutting blade (CB) along a horizontal axis which is preferably o-axial with the horizontal axis of the vessel (V).

In accordance with an additional embodiment of this invention, there is provided a second driving means (D2) adapted to drive the vessel i.e. to rotate the vessel along its operative horizontal axis.
The first drive means (D1) and the second drive means (D2) may be interconnected or independent of each other. Thus, the direction of rotation may be opposing or same. This makes the dual rotary mechanism. The dual rotary mechanism is capable of providing efficient mixing and grinding technique.
Preferably, the dual rotary mechanism, may be configured such that it involves a clockwise rotation of the grinding blades and an anti-clockwise rotation of the mixing jar for providing more efficient mixing and grinding phenomenon.
The mixing and grinding apparatus includes a Motor which is the first drive means which is installed on the vertical body and is connected to the cutting blade which is independently attached with the motor shaft and is not part of the mixing/grinding jar. The rotation of the cutting blade can be ideally in a clockwise direction; however, there can be an alternative mode wherein the rotation of the cutting blades can be in anti-clockwise direction. As mentioned, the mixing/grinding vessel can be installed independently on the motor shaft and later the blades can be attached. The rotation of the mixing/grinding vessel can be in the opposite direction i.e. in the anti-clockwise direction for enhancing the mixing phenomenon of the food material. However, there can be a further alternative embodiment wherein the rotation of the mixing/grinding vessel can be in clockwise direction incase when the rotation of the cutting blades is in anti-clockwise direction. The basic idea is to have the rotational movement of the cutting blades and the mixing/grinding vessel in opposite directions so as to achieve efficient cutting and mixing.

The anti-clockwise rotation of the mixing/grinding vessel can be achieved through a gear mechanism or any alternative mechanism involving the first drive means or through any independent means. The mixing/grinding vessel also has some slabs/carrier blades which will take the grounded or ungrounded food vertically in the upper direction and will allow it to fall on the rotating blades, due to gravity
The vessel (i.e. the mixing/grinding jar) is also detachable so that it can be easily cleaned with a dry cloth or washed under running water.
As an alternative embodiment, the alignment of the cutting blade can also be in an operative horizontal direction such that its rotation axis is operatively vertical so as to increase the cross-sectional area of the cutting blades for enhanced cutting process.
While this detailed description has disclosed certain specific embodiments of the present invention for illustrative purposes, various modifications will be apparent to those skilled in the art which do not constitute departures from the spirit and scope of the invention as defined in the following claims, and it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the invention and not as a limitation.

We claim,
1. A mixing and grinding apparatus comprising:
(a) vessel mounted on its axis such that the axis is in an operative horizontal
plane, said vessel having plurality of blades or ribs on its internal circumferential wall such that said ribs extend towards the centre of the cylindrical vessel;
(b) a dual rotary mechanism consisting of:
(i) cutting blade mounted in a co-axial operative horizontal manner with respect to said vessel, spaced apart from the walls of said vessel, said cutting blade being operated by a first driving means adapted to drive said cutting blade along said horizontal axis which is co-axial with said horizontal axis of said vessel; and
(ii) second driving means adapted to drive said vessel by rotating said vessel along its operative horizontal axis.
2. The apparatus as claimed in claim 1, wherein said cutting blade is a mixing blade.
3. The apparatus as claimed in claim 1, wherein said cutting blade is a grinding blade.
4. The apparatus as claimed in claim 1, wherein said cutting blade is a removable blade adapted to be removable from a mounting shaft which is driven.
5. The apparatus as claimed in claim 1, wherein said apparatus includes a base which houses said first drive means and said second drive means and shafts for mounting said vessel.

6. The apparatus as claimed in claim 1, wherein said first drive means and said second drive means are interconnected drive means.
7. The apparatus as claimed in claim 1, wherein said first drive means and said second drive means are interconnected drive means by means of a gear assembly.
8. The apparatus as claimed in claim 1, wherein said vessel is a substantially cylindrical vessel.
9. The apparatus as claimed in claim 1, wherein said vessel is a detachable
vessel.
10. The apparatus as claimed in claim 1, wherein said first driving means is a clockwise driving means.
11. The apparatus as claimed in claim 1, wherein said first driving means is an anti-clockwise driving means.
12. The apparatus as claimed in claim 1, wherein said second driving means is a clockwise driving means.
13. The apparatus as claimed in claim 1, wherein said second driving means an anti-clockwise driving means.
14. A mixing and grinding apparatus comprising:
(a) vessel mounted on its axis such that the axis is in an operative horizontal plane, said vessel having plurality of blades or ribs on its internal circumferential wall such that said ribs extend towards the centre of the cylindrical vessel;

(b) a dual rotary mechanism consisting of:
(1) cutting blade mounted in an operative vertical manner in and with respect
to said vessel, spaced apart from the walls of said vessel, said cutting
blade being operated by a first driving means adapted to drive said
cutting blade along said vertical axis; and (ii) second driving means adapted to drive said vessel by rotating said vessel
along its operative horizontal axis.
15. The apparatus as claimed in claim 14, wherein said cutting blade is a mixing blade.
16. The apparatus as claimed in claim 14, wherein said cutting blade is a grinding blade.
17. The apparatus as claimed in claim 14, wherein said cutting blade is a removable blade adapted to be removable from a mounting shaft which is driven.
18. The apparatus as claimed in claim 14, wherein said apparatus includes a base which houses said first drive means and said second drive means and shafts for mounting said vessel.
19. The apparatus as claimed in claim 14, wherein wherein said first drive means and said second drive means are interconnected drive means.
20. The apparatus as claimed in claim 14, wherein said first drive means and said second drive means are interconnected drive means by means of a gear assembly.

21. The apparatus as claimed in claim 14, wherein said vessel is a substantially cylindrical vessel.
22. The apparatus as claimed in claim 14, wherein said vessel is a detachable vessel.
23. The apparatus as claimed in claim 14, wherein said first driving means is a clockwise driving means.
24. The apparatus as claimed in claim 14, wherein said first driving means is an anti-clockwise driving means.
25. The apparatus as claimed in claim 14, wherein said second driving means is a clockwise driving means.
26. The apparatus as claimed in claim 14, wherein said second driving means an anti-clockwise driving means.