PREPARATION APPLIANCE

CROSS REFERENCE TO REALTED APPLICATIONS

[001] This application claims priority to a Provisional Application 2013096169 filed on 12/26/2013 in Singapore and now pending US Utility Application 14445122 filed on 29 ^th July 2014 are hereby incorporated by reference in its entireties for all of its teachings.

FIELD OF THE INVENTION

[002] This disclosure relates generally to a dry flour dispensing apparatus and using the same for a food preparation apparatus. More specifically automated mechanical dispensing of measured dry flour is done using software controlled technology for a food preparation appliance.

BACKGROUND

[003] Industrial scale flour dispensing for large commercial establishments have been achieved in food industry. A dry flour dispensing for home appliances as part of an automated apparatus to make flat bread is nonexistent. Individual serving size home cooking appliances and processes are semi- automated and have disparate steps in making a dough product. Specifically the art of making flat bread has multiple steps and the making of the dough is not only essential but critical as well. This step for individual serving is difficult to optimize and automate. There exists a need to overcome this hurdle.

SUMMARY OF INVENTION

[004] The present invention is a dry flour dispensing apparatus with several sub-assemblies to dispense dry flour in measured quantity to make one dough ball at a time. This apparatus is a part of a food appliance to make flat breads. In this disclosure a method of using the dry flour dispensing apparatus is also described. In one embodiment, the dry flour dispensing apparatus comprises of a dry flour container, a blade, a compartmental wheel, a packer, a knocker and a gear box attached to a motor. In another embodiment, the compartment wheel comprises a plurality of compartments. Each compartment has a fixed volume to receive a specific amount of flour. [005] In one embodiment, the dry flour container has an upper opening to fill the dry flour and has a lid to cover it. In another embodiment the dry flour container is made up of food grade material. In one embodiment, a knocker made up of spring steel is attached to the bottom of the dry flour container. The bottom of the dry flour container, in one embodiment, also receives the compartmental wheel having several flour holder to fill with dry flour. Every compartmental wheel cubes has a specific capacity to hold flour, in one embodiment.

[006] In one embodiment, a novel packer is introduced. The packer disburses a fixed amount to dry flour to each flour holder in the compartmental wheel. The packer is made up of steel spring. In another embodiment, a steel spring knocker is designed such that it empties compartmental cubes each time so that even delivery of the flour is carried out.

[007] In one embodiment, a blade is housed in the dry flour container. A gear box with predetermined teeth number is attached to the blade on one end and a motor on the other end, in one embodiment. In another embodiment, the motor is regulated by a software residing in a hardware, such as a processor, and provides feedback to regulate the dispensing and monitoring the level of dry flour in the container.

[008] In one embodiment, a method of dispensing dry flour is described. The method starts with filling a dry flour container with dry flour for a specific quantity to make a flat bread. A blade rotates through the dry flour to disturb the dry flour and move the dry flour to a dispenser. A specified quantity of the dry flour is dispensed and received from the dispenser using a packer into a compartmental wheel having a multiple flour holder; and dispersing the filled dry flour from each multiple flour holder to a kneading compartment is done using a knocker.

[009] In another embodiment, monitoring the level of dry flour in the container using feedback from a current drawn by a motor and the current drawn by the motor is correlated with the level of dry flour in the container using software residing in the processor. In another embodiment, the dry flour is tapped to by a knocker to empty from the multiple flour holder into the kneading container.

[010] The gear box is used for rotating the blade, the compartmental wheel, the packer and the knocker which in turn is attached to a motor.

[011] Other features and advantages will be apparent from the detailed description, taken in conjunction with the accompanying drawings, which illustrate, by way of example, the principles of the current apparatus and method. BRIEF DESCRIPTION OF THE DRAWINGS

[012] Example embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements and in which:

[013] Figure 1 shows a view of the dry flour container.

[014] Figure 2 show an exploded view of the compartmental wheel with multiple cubes.

[015] Figure 3 show a perspective view of the dry flour container and the knocker attached to it.

[016] Figure 4 show a view of the knocker and its parts.

[017] Figure 5 shows the blade assembly with a packer attached to it.

[018] Figure 6 show the dry flour dispensing apparatus with various parts assembled.

[019] Figure 7a show a perspective view of the gear box attached to the motor. Figure 7b show side view of the gear box and its teeth that correspond to the multiple cubes in the compartmental wheel.

[020] Figure 8 shows the blade attached to the compartmental wheel with multiple cubes.

[021] Figure 9A shows the side view of the flour dispensing apparatus. Figure 9B shows the bottom view of the flour dispensing apparatus.

[022] Other features of the present embodiments will be apparent from accompanying drawings and from the detailed description that follows.

DETAILED DESCRIPTION

[001] The invention discloses novel dry flour dispensing apparatus and a method of using the same. Several novel parts, assemblies and software controlled monitoring and feedback system are described to make a single dough ball at a time to make flat breads. This apparatus is part of a larger cooking appliance that is used for automatically making one flat bread one at a time. Although the present embodiments have been described with reference to specific example embodiments, it will be evident that various modifications and changes may be made to these embodiments without departing from the broader spirit and scope of the various embodiments.

[023] Figure 1 shows a view of the dry flour container 104. The cylindrical dry flour container has two openings. The upper opening 102 receives the dry flour and the lower opening has smaller circular opening 106 to receive the compartmental wheel below and an opening 112 to of equal size to a single cube of the multiple cube present in the compartmental wheel. On the outer lower side 110 the knocker is attached to the dry flour container 104. The lip of the smaller opening 108 provides a secure holding for the compartmental wheel to be attached without leaks. The dry flour container is made up of food grade material and is big enough to hold flour to make 1-20 dough balls. Preferably the dry flour container is transparent so that the user may also visually estimate the level of flour left for replenishment. The dry flour container has a lid to close it from the top. The dry flour container also houses the packer and blade assembly for distribution of flour.

[024] Figure 2 shows the unique and novel design for dispersing small but multiple quantities of dry flour to the kneading mechanism of the flat bread making apparatus. This novel design enables the apparatus to dispense controlled but known quantity of dry flour with accuracy. This design also enables the dry flour distribution to be controlled based on user preference. If the user selects a thicker flat bread in size more flour has to be dispensed to accommodate the preference. However, if the user preference is thinner flat bread then the dry flour will be dispensed using only a limited number of multiple cubes in the compartmental wheel. This novel wheel design also enables the dough making apparatus to estimate the stickiness and correct the optimal viscoelasticity property of the dough ball that is being formed for making a flat bread.

[025] Figure 2 shows different parts of the compartmental wheel. The inner circular ring 204 that fits into the opening 106. The base of the compartmental wheel 206 accommodates several cubes 202 for the compartmental wheel. Compartmental wheel 202 rotates to dispense fixed amount of powder. This is done by using detection by optical encoder and the activation on counts by the teeth profile on the gearbox that has one tooth for every compartment 202 on compartment wheel 202.

[026] Figure 3 shows a cross section of the container 104 having a distinct ring 302 and the knocker attachment portion 304. Figure 4 shows the knocker 402 that is made up of multiple parts. The stub 406 is used for securing the knocker to the base of the dry flour container 304. The unique spring steel 404 design of the knocker allows the spring steel part 404 to press the dry flour out of the multiple cube 202 in the compartmental wheel. Once the spring steel part 404 has pushed the flour out of the cubes it springs back to original position.

[027] The knocking process is as follows. As compartmental wheel 206 rotates, the wall of cube 202 comes into contact with knocker 402, such that the wall of cube 202 biases knocker 402 into a biased position. Once the wall of cube 202 has navigated pass knocker 402, the biasing force is removed, and knocker 402 springs back to its original unbiased position. With this springing action, knocker 402 knocks the flour of a single cube 202. Knocker 402 ensures that all of the flour in cube 202 is dispensed by this knocking action.

[028] Figure 5 shows the blade assembly 502 is adapted to fit into dry flour container 104. Blade assembly 502 comprises of packer 504 and the blade 506. The blade 506 rotates inside the dry flour container and rotates opposite to the compartmental wheel. The invention disclosed herein is essentially a "Packer-Knocker" design. The "Packer" 504 component packs the powdered flour into compartments 202 and the "Knocker" 402 component knocks the powdered flour out of compartments 202. This overcomes the technological challenge of packed flour not being completely dispersed into the kneading compartment and adaptive adjustment is performed to get a dough ball having an optimal viscoelastic property. It also discloses the novel technological advancement of choosing of the thickness of the flat bread and adjusting the dry flour input accordingly.

[029] The "Packer" component will now be described. Referring to figure 3, blade assembly 102 is shown. Preferably, packer 103 is made up of spring steel which returns to its original shape once a biasing force is removed. In its original unbiased position, packer 103 is positioned at an inclined angle relative to a horizontal axis of blade assembly 102. Preferably, this angle is around 45 degrees. A sufficient biasing force will move the packer 103 to a biased position. This biased position can be at an angle less than its unbiased position. The removal of the biasing force will cause packer 504 to spring back to its original unbiased position. Preferably, blade assembly 502 comprises a plurality of packers 504. Preferably, the plurality of packers 504 are spaced apart and are located on an opposite end to one another. Now referring to Figure 5, the blade assembly 502 is shown with packing wheel 105. Motors drive the rotational movement of blade assembly 502 and packing wheel 105. Preferably, blade assembly 502 rotates in the opposite direction to packing wheel 504.

[030] Dry flour container 104 contains powdered flour. The packing process is as follows. As blade assembly 502 rotates, packer 504 is impeded by limb of 506, which applies a biasing force to packer 504. The biasing force causes packer 504 to move to its biased position. Once packer 504 has navigated pass limb 506, the biasing force is removed, and packer 504 springs back to its original unbiased position. With this springing action, packer 504 catches on to some of the powdered flour in dry flour container 104, and propels and packs the powdered flour into cube 202 of compartment wheel 206. Compartment wheel 206 rotates in the opposite direction as compared to blade assembly 502. This is so the packing operation is optimized. The rotational movement of compartment wheel 206 is also synchronized to that of blade assembly 502 such that when packer 504 is springing back to its original unbiased position, a single compartment 202 is already in the optimal position to receive the flour being propelled by packer 504.

[031] Figure 6 shows a consolidated view of the container 102 housing blade assembly 502, packer 504, knocker 404, individual cube 202 of the compartmental wheel and an outer layer 602 to encase all these components. This whole assembly sits on a gear box attached to a motor.

[032] Figure 7A shows the gear box 702. The tooth 704 is for rotational purposes. However, the teeth 706 are designed such that it corresponds to the cube 202 and helps fill each cube 202 one at a time. The shaft 708 is attached to the motor. Figure 7B shows a closer look of the gear box 702 with enlarged tooth 704 and teeth that relate to the cube 706.

[033] Figure 8 shows the assembly of blade assembly 502 and the compartmental wheel 206 and the alignment of the packer with respect to the cube 206.

[034] Figure 9A shows the outer side view of the whole flour dispensing apparatus 900. Figure 9B shows the bottom view of the flour dispensing apparatus with tubes for dispensing water 902 and oil 904, in one perspective.

[035] In one embodiment, a method of dispensing dry flour is described. The method starts with filling a dry flour container with dry flour for a specific quantity to make a flat bread. A blade rotates through the dry flour to disturb the dry flour and move the dry flour to a dispenser. A specified quantity of the dry flour is dispensed and received from the dispenser using a packer into a compartmental wheel having a multiple flour holder; and dispersing the filled dry flour from each multiple flour holder to a kneading compartment is done using a knocker.

[036] In another embodiment, monitoring the level of dry flour in the container using feedback from a current drawn by a motor and the current drawn by the motor is correlated with the level of dry flour in the container using software residing in the processor. In another embodiment, the dry flour is tapped to by a knocker to empty from the multiple flour holders into the kneading container. The current drawn by a flour dispenser motor is directly proportional to the amount of flour in compartment 104. This allows the software to detect if compartment 106 is empty. The technical challenge that has been overcome there with this technology is that partial dispersement of the flour can be done based on the feedback received from downstream methods such as kneading, mixing or any other food processing apparatus. The apparatus may be a part of a food processing apparatus that is being used for making flat bread and requires no human intervention.

[037] Although the present embodiments have been described with reference to specific example embodiments, it will be evident that various modifications and changes may be made to these embodiments without departing from the broader sprit and scope of the various

embodiments. Accordingly, the specification and drawings are to be regarded in an illustrative rather than a restrictive sense.