Title of Invention

A TIFFIN FOR KEEPING HOT & COLD FOODS

Abstract

A Tiffin for keeping hot and cold foods, comprising a plurality of compartments/main boxes, a bottom cover and a top cover, each made of the said main box having an inner bowl and an outer container made of plastic material, the said outer container consisting of an upper portion and a lower portion separated by a partition wall, the inner bowl being accommodated in the upper portion resting on the said partition wall and clamped with the help of a double walled clamp ring made of plastic material, forming a double walled strong and steady heat insulated main box, the said main box provided with threading means at its upper and lower ends and the top and bottom covers being provided with corresponding threading means for connecting the same with the top and bottom ends of the main box.

Full Text

FORM 2 THE PATENTS ACT 1970 (39 of 1970) & THE PATENTS RULES, 2003 COMPLETE SPECIFICATION. [see section 10 and rule 13] " A TIFFIN FOR KEEPING HOT & COLD FOODS " M/s. Partham Overseas, An Indian Partnership Firm having Four partners:- (i) Smt. Usha Kamal Arora. (ii) Shri. Kamal Kishore Arora. (iii) Smt. Rimpi Navin Arora. (v) Shri. Vikash Kamal Arora. M/s. Partham Overseas, 1/2, Sunshine Industrial Estate, Near Golani Stop, Waliv, Vasai, (East) Dist. Thane-401 208. The following specification particularly describes the invention and the manner in which it is to be performed This invention relates to a tiffin for keeping hot and cold food. More particularly this invention relates to a double walled strong and steady insulated tiffin which is capable of maintaining the temperatures of different individual food items kept therein almost at its original temperatures and without any problem of leakage or mixing of food and at the same time it is also easily adjustable for reducing the number of compartments as per requirements. Tiffin is used for carrying food for eating later on after few hours. Existing tiffins a number of compartments for keeping different food items like cooked dal, rice, vegetable, roti, salad, curd, chutni, pickles, etc. The number of compartments which are preferably made of stainless steel are stacked one above the other and are clamped together with a specially designed for a particular tiffin size which is also integrally provided with handle for lifting and carrying the tiffin. These tiffins are not able to maintain the temperature of the food items and therefore are not preferred by most of the peoples specially of higher class or even of middle class. Further these tiffins are not leak proof and adjustable for changing the number of compartments as per requirements. Also the compartments stacked one above the other are press fitted into each other which sometimes create a big problem for opening. Further after some use compartments become either too tight to assemble or loose to fall apart easily thereby leaking, mixing and spoiling the food items. Another type of tiffin is also available which is able to keep the food items at hot or cold temperature. In this type of tiffins a number of steel compartments are stacked one above the other and clamped together which are then placed inside a heat insulated large container, which helps in maintaining the inside temperature at the same level in all the compartments and prevents it from being influenced by the outside atmospheric temperature. The main draw back of such type of tiffin is that the food items of all the compartments attain the same temperature after some time as heat flows from one compartment to another inside the heat insulated outer larger container. As such the hot food item kept in one steel compartment will cause warming of the cold food item kept separately in another compartment. Thus the hot Dal(pulse) or vegetable in one compartment will cause warming of the cold food item kept separately in another compartment. 2 3 Thus the hot Dal (pulse) or vegetable in one compartment will cause warming of the cold curd kept in another compartment, resulting into the curd to break off from its original condition, making the curd to loose the flavour and becoming sour in taste, thereby making the heat insulated fiffin not suitable for all the food items. Further the steel containers, stacked inside the insulated large container (hot case) in the existing tiffins, use to break off collapse causing the food ingredients to fall in the hot case and sometimes even food ingredients get mixed with another, thereby spoiling the food. Futher the tiffin is not adjustable as the hot case is of fixed size and inside containers are also clamped in a fixed clamp and as such tiffin of various sizes are required to be purchased according to different requirements, such as two container tiffin, three container tiffin, four container tiffin, etc. further in the existing tiffins there is no provision for keeping salad, chatani, spoon, etc. and a separate container is used for keeping such items which also increases the size of tiffin. The main object of this invention is to obviate the above mentioned drawbacks of the existing tiffins and to provide a tiffin for keeping hot food as well as cold food, separately in the adjacent two containers/ compartments of the same tiffin 3 without affecting the food ingredients and also keeping the hot food hot and cold food cold for a sufficient time. Another object of this invention is to provide a fiffin for keeping hot and cold food wherein the various compartments are assembled in a steady and leakproof manner thereby preventing any break/fall of containers and mixing up of the food ingredients. A further object of this invention is to provide a tiffin for keeping hot and cold food, which is adjustable so as to allow a single tiffin to reduce/ vary in size namely four container, three container, two container or one container is to provide a tiffin for keeping hot and cold food which is quite easy to open and assemble and which does not require any separate clamping means to keep all the containers clamped together. A further object of this invention is to provide a tiffin for hot and cold food in which the bottom cover of the tiffin is utilized for keeping salad, chatani, spoon, etc. without occupying a separate container, thereby keeping the size of the tiffin small. A further object of the invention is to provide a tiffin for hot and cold food which is sleek in size and aesthetic in look besides severing the main purpose of mamtaining the food hot 4 5 and cold at its original temperatures without any leakage so that flavour and taste of the food ingredients are maintained. Accordingly this invention provides. A tiffin for keeping hot and cold food comprising a plurality of compartments/ main boxes, a bottom cover & a top cover, each of the said main box having an inner bowl and an outer container made heat insulation material, the said outer container consisting of an upper portion and lower portion separated by partition wall, the inner bowl being accommodated in the upper portion resting on the said partion wall and clamped with the help of double walled clamp ring made of heat insulation material forming double walled strong & steady heat insulated main, box, the said main box provided with threading means at its upper and lower ends and the top and bottom covers being provided with corresponding threading means for connecting the same with top and bottom ends of the main box. The tiffin, wherein the said inner bowl is made stainsless steel and inner surface of the bowl is provided with mirror finish. 5 The tiffin, wherein the said inner steel and plastic outer container and clamp ring are made of strong and steady plastic material. The tiffin, wherein the said partition wall of the outer container is formed integral with the circumferential wall of the container. The tiffin, wherein the lower portion of the container is provided with inner thread and the bottom cover is provided with outer thread. The tiffin, wherein the top end of the main box is provided with outer thread and the top cover is provided with inner thread. The tiffin, wherein the top cover is provided with slotted projections projecting out diametrically opposite to each other are for fastening a strap for carrying the tiffin. The tiffin, wherein a cover dish is provided for each main box and the said cover dish is made of plastic. 6 The tiffin wherein a seal plate is provided in between the two main boxes and in between the bottom cover and the adjacent main box and the said seal plate is made of plastic. The tiffin, wherein the said top and bottom covers are made of plastic material and are provided with gripping means on the outer surfaces which makes it easy to held and /or open & to close the compartment. The tiffin wherein the number of compartments/ main boxes used may vary as per requirement such as one, two, three, four, five or more. The invention will now be described with reference to accompanying drawings wherein: FIG, 1,2 & 3- Show plan, elevation and sectional elevation, respectively of the main box/ compartments of the tiffin, according to an embodiment of this invention, sectional elevation is alsong line A-A marked in Fig. 1 and detail 'X' are given for the porstion 'X' marked in Fig 3. 7 FIGS. 4 & 5 - Show plan and sectional elevation along line B-B marked in Fig. 4, respectively of the seal plate of the tiffin according to this invention which is in the top to create a vacuum / or the top container to present the outer temperature to affect the inner temperature of the first container. FIGS. 6, 7 & 8- Show plan, sectional elevation along line C-C marked in Fig. 6 and details of portion 'Y' marked in Fig.7, respectively of the cover dish of the tiffin according to this invention. FIGS. 9,10 & 11- Show plan, elevation and sectional elevation along line D-D marked in Fig 9, respectively of the bottom cover of the tiffin according to this invetion. FIGS. 12,13 & 14- Show plan, sectional elevation along line E-E marked in Fig. 12 and detail of portion 'Z' marked in Fig. 13, respectively showing to this invention. FIGS. 15,16 & 17- Show plan, elevation and sectional elevation along line F-F marked in Fig. 15, respectively of the top cover of the tiffin, according to this invetion. 8 FIGS. 18 & 19- Show plan and sectional elevation along line G-G marked in Fig. 18, respectively of the steel bowl of the tiffin according to this invention. FIGS. 20 & 21- Show perspective views in blown up position and assembled position respectively of the tiffin according to this invention. Referring to Figs. 1 to 21 the tiffin (1) for keeping food hot and cold, according to an embodiment of this invention comprises a plurality of main boxes/ compartments (2), which can be one, two or more, a cover dish(3) for each container, a bottom cover (4) and a top cover (5) and a seal plate (6) provided in between the two adjacent compartments and also between the compartments and the covers. Each compartment or main box (2) comprises a bowl (7) (as shown in Fig 19) preferable made of stainless steel which is strong, steady and non magnetic. Inner surface of the bowl is mirror finished. The steel bowl (7) forms the inner surface of the main (2). The outer container (8) of the main box (2) and the layer of chemical which reflect the outer temperature to effect the inner temperature and bring the inner temperature to a mulcteland which is called as such as PUF preferable Isocynate and polyol, which provide strong and 9 steady heat insulation. Further the outer container (8) is having two portions an upper portion (9) and a lower portion (10) separated by a partition wall (11), preferable integrated formed with the container wall made of heat insulation material. The steel bowl (7) is accommodated in the upper portion (9) and it rests on the partion wall (11). The steel bowl (7) is rigidly clamped inside the upper portion (9) with the help of a double walled clamp ring (12) (see Fig.14) made of heat insulation material, thereby forming a double walled strong and steady heat insulated main box(2) of the tiffin (1). The lower portion (10) is provided with inner threads (13) for easy connecting there to either another box (2) is provided with outer threads (14) for easy connecting the box (2) or bottom cover (4). Similarly the top end of the box (2) is provided with outer threads (14) for easy connecting the box (2) with the inner threads (13) of the adjacent upper box or to the top cover(5). The bottom cover (4) is made of heat insulation material and is provided with outer threads (15) for easily connecting the same inside the lower portion of the main box (2). The bottom cover (4) is made sufficiently deep, like a bowl, so that, salad, chatani pot, or pouch, spoon, etc can be kept easily without occupying a separate compartment or main box (2). The Top Cover (5) is made of heat insulation material and is provided with inner 10 thread (16) for easy connecting to the top most main box(2). The top cover is also provided with strap connecting means such as slotted projections (17) for connecting a strap which is used for carrying the tiffin. The outer surfaces of the top and bottom covers are provided with gripping means (18) for very easy holding for covers while putting on or moving from the main box (2). A cover dish (3), as shown in Fig. 7 is preferably provided for each main box (2). It is made of good quality plastics. It is used to cover the ingredients placed inside the main box (2). The seal plate (6) may also be provided in between the main boxes or between the covers & main boxes for properly sealing the food ingredients filled inside the main box. It is made of plastic. The Tiffin (1) as shown in Figs. 20 & 21 is having five compartments main box (2) which are assembled together by threading, so there is no chance of falling out or breaking out of any of the compartment. Further the food ingredients are also kept in leak proof manner. The heat insulation material on the outer side as well as in between the two compartments and also between the compartment and bottom cover totally prevents the heat transfer from inside and outside as well as from one compartment to another compartment and from bottom compartment to bottom cover, therefore the temperature of the food ingredients in a 11 compartment remains unaffected with the temperatures of the other compartments. Hence a hot and cold food items can be kept in the Tiffin (1). According to this invention the hot food will be maintained hot and cold food will be maintained cold that is in the same condition in which it was packed and there will be no loss of flavour or taste of the food items. Further the tiffin (1) is also adjustable or flexible. If at any time only four, three, two or even one main box is required instead of five, the required number of boxes can be used and covered by top and bottom covers. Therefore, if a person has purchased a five compartments tiffin, he or she will not require to purchase any other tiffin due to adjustability of the tiffin (1) of this invention, as per requirement. The tiffin (1) is quite sleek, strong and steady and is very easy to assemble and disassmble. It is also very simple & easy for mass manufacturing. The outer surfaces of plastic material can be provided with any desired colours, prints or designs to give a pleasant look. The above description with reference to drawings is given just to understand the invention rather than to limit its scope. 12 WE CLAIM: 1) A Tiffin for keeping hot and cold food, comprising a plurality of compartments/main boxes, a bottom cover and a top cover, each of the said main box having an inner bowl and an outer container made of plastic material, the said outer container consisting of an upper portion and a lower portion separated by a partition wall, the inner bowl being accommodated in the upper portion resting on the said partition wall and clapmed with the help of a double walled clamp ring made of plastic material, forming a double walled strong and steady heat insulated main box, the said main box provided with threading means at its upper and lower ends and the top and bottom covers being provided with corresponding threading means for connecting the same with the top and bottom ends of the main box. 2) The Tiffin as claimed in claim-1, wherein the said inner bowl is made of stainless steel and the inner surface of the bowl is provided with mirror finish. 13 3) The Tiffin as claimed in the Claim-1, wherein the said outer container and the clap ring are made of strong and steady plastic material. 4) The Tiffin as claimed in Claim-1, wherein the said partition wall of the outer container is formed integral with the circumferencial wall of the container. 5) The Tiffin as Claimed in Claim-1, wherein the lower portion of the container is provided with inner thread and the bottom cover is provided with outer thread. 6) The Tiffin as Claimed in Claim-1, wherein the top end of the main box is provided with out thread and the top cover is provided with inner thread. 7) The Tiffin as Claimed in Claim-1, wherein the top cover is provided with slotted projections projecting out diametrically opposite to each other for fastening a strap for carrying the tiffin. 8) The Tiffin as claimed in claim-1, wherein a cover dish is provided for each main box and the said cover dish is made of plastic material. 9) The Tiffin as claimed in claim-1, wherein a seal plate is provided in between the two main boxes and in between the top and bottom covers and the adjacent main boxes and the said seal plate is made of plastic. 14 15 The tiffin as claimed in claim -1, wherein the said top and bottom covers are made of plastic material and are provided with gripping means on the outer surfaces. The tiffin as claimed in claim-1, wherein the number of compartments / main boxes used may vary as per requirement such as one, two, three, four, five or more. A Tiffin for keeping hot and cold food, substantially as herein described and claimed in the figures of the accompanying drawings. Dated this 27 day of September 2005 M. P. MIRCHANDAN1 (Patent Attorney) 15 ABSTRACT A Tiffin for keeping hot and cold food, comprising a plurality of compartments/main boxes, a bottom cover and a top cover, each of the said main box having an inner bowl and an outer container made of plastic material, the said outer container consisting of an upper portion and a lower portion separated by a partition wall, the inner bowl being accommodated in the upper portion resting on the said partition wall and clamped with the help of a double walled clamp ring made of plastic material, forming a double walled strong and steady heat insulated main box, the said main box provided with threading means at its upper and lower ends and the top and bottom covers being provided with corresponding threading means for connecting the same with the top and bottom ends of the main box. , 16

Documents:

1206-mum-2005-abstract(17-09-2007).doc

1206-mum-2005-abstract(17-09-2007).pdf

1206-mum-2005-abstract.doc

1206-mum-2005-abstract.pdf

1206-mum-2005-cancelled pages(17-09-2007).pdf

1206-mum-2005-claims(granted)-(17-09-2007).doc

1206-mum-2005-claims(granted)-(17-09-2007).pdf

1206-mum-2005-claims.doc

1206-mum-2005-correspondance-received.pdf

1206-mum-2005-correspondence(17-09-2007).pdf

1206-mum-2005-correspondence(ipo)-(25-08-2008).pdf

1206-mum-2005-description (complete).pdf

1206-mum-2005-drawing(17-09-2007).pdf

1206-mum-2005-drawings.pdf

1206-mum-2005-form 1(28-09-2005).pdf

1206-mum-2005-form 18(26-12-2006).pdf

1206-mum-2005-form 2(granted)-(17-09-2007).doc

1206-mum-2005-form 2(granted)-(17-09-2007).pdf

1206-mum-2005-form 26(28-09-2005).pdf

1206-mum-2005-form 3(28-09-2005).pdf

1206-mum-2005-form 5(28-09-2005).pdf

1206-mum-2005-form-1.pdf

1206-mum-2005-form-2.doc

1206-mum-2005-form-2.pdf

1206-mum-2005-form-26.pdf

1206-mum-2005-form-3.pdf

1206-mum-2005-form-5.pdf

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