FORM 2
THE PATENT ACT, 1970,
(39 OF 1970)
&
THE PATENTS RULE, 2003
COMPLTE SPECIFICATION
(SEE SECTION 10; RULE 13)
Title of invention: A Milk boiling alarm device
Name and Address: SANJAY W.SHINDE TOWER 1 A ,FLAT 1104, BALAJI GARDEN, NEW AYRE ROAD, KOPER (EAST) THANE (421201)
The following specification particularly describes the nature of the invention and manner
in which it is to be performed

INVENTION :
The invention relates to a milk boiling alarm device. More particularly an electronic device kept over the cover plate of milk vessel gives alarm when temperature of milk just attains to boiling condition so that person can attend to avoid spillage by foaming.
Background of invention:
Many places fresh milk is prepared to preserve by boiling. Since boiling takes more time, most of the time user tries to perform other activities simultaneously, in result many times milk in the vessel which is in the process of warming goes overflow and it get followed by cleaning spilled milk. The Milk boiling Alarm device is developed with the purpose to notify user by audible Sound, once milk is almost ready to get boiled due to overheating. The devices intend to work with almost all type of household metal vessels having straight top to place cover plate.
Prior art
Patent no. 213377( 790/mum/2005) relates An Electronic Milk Boiling Controller used for putting off Gas stove when boiling of milk comprising a liquid sensor mounted to a stainless steel mess utensil closure, the said sensor is connected to the input of an electronic signal conditioning circuit; the out put of the said circuit is connected to an electromechanical actuator of a valve; and the said valve having an inlet adapted to connect to gas regulator and an outlet connected to inlet of a gas stove.
In this user has to reset Gas connection every time after use and it becomes inconvenient to see wire around Gas stove. Actuator part is bit costly and it may have safety issues, if it's not working properly. Since sensor need to in touch with milk, which need to be clean every time for hygiene concerns
Indian patent no 112108 document relates to a milk pot with a whistling device comprising the metal container consisting of two co- axial pots one larger than the other in all dimensions, the smaller one being placed in and connected to the larger one by seaming and joining together and securedly only the top edges of both the pots throughout, and the internal opening or mouth of whistling tube secured in and to the hole a little below the top edge in the outer pot for pouring water in the hollow space in between the pots through outer opening of the whistling tube, the outer opening of the whistling tube being further provided with a removable stopper for closing the outer opening of the whistling tube so as to convert into a whistling device.
Problem with device of whistle, which use water and additional container in which water is poured. Water in the jacket container first need to be become hot and then heat

is transferred to vessel having milk. It takes more Gas since it is indirect heating. Many times water may not be sufficient which led to damage to container.
EP 2389848A1 relates to a device for heating and foaming milk comprising a support surface for receiving a container containing milk , a steam wand provided with an open end suitable for being immersed in the container and at least one contactless temperature transducer disposed in proximity to the support surface for detecting the temperature of the milk when contained in the container. The temperature transducer preferably comprises an infrared sensor and detection of the temperature of the milk takes place via detection of the temperature of at least one portion of the outer surface of the container.Draw back of this device with electronics, which needs the temperature sensors in contact with milk, which in turn raises hygiene concerns by contamination. Some temperature sensor may be using toxic materials.
EP 2153757A1 document discloses a device to heat without boiling milk with or without formation of milk cream. The said device having container with handle and cover ; consists of an electric circuit fed through batteries, a thermal sensor housing in a cylindrical protruding part, a switch with three selection functions, an acoustic signal connected with whisk and push button. The thermal sensor will come in contact with the milk which is not desirable in view hygienic requirement.
The prior art devices above discussed not having any features of milk boiling alarm device according to the alleged invention. The device of alleged invention is free of all disadvantage of prior arts.
OBJECTION OF INVENTION :
It is objection of invention to provide a milk boiling alarm electronic device placed on the cover plate of vessel containing milk heated for boiling.
It is another object of the invention to provide a milk boiling alarm device having a heat sensor for sensing the temperature of cover plate of milk boiling vessel and trigger the heat sensing circuit to activate the buzzer of the said device.
it is object of invention to provide a milk boiling alarm device to give alarm prior to boiling so as to some body attend to stop boiling.
STATEMENT OF INVENTION:
Accordingly invention provides a milk boiling alarm device adapted to place on the cover plate of milk boiling vessel comprises hollow body bottom part having a hole and a top part; a heat sensing circuit powered by a battery with (1) push button to

power ON/OFF and (3) LED light indicator, for indicating device working, mounted mountings formed in the said hollow body ; a (2) buzzer, for generating audible sound when milk is almost about to get boiled, connected to the out put of the said heat sensing circuit ; a heat sensor, for input signal for triggering circuit board (7) when temperature of milk is about to boil, connected to the input of the said heat sensing circuit; the said heat sensor mounted in the said hole of the hollow bottom part so as to protrude out; three mounting holes made on top part of said hollow body for mounting said push button on/off switch, LED indicator and buzzer.
DRAWINGS:
Invention clearly described with reference to the figures of drawing
Wherein;
Figure 1 illustrates use of the milk boiling alarm device placed on the cover plate of the milk boiling vessel to create alarm when milk temperature attains near to boiling.
Figure 1a shows top view of the milk boiling alarm device illustrating push button on/off switch, LED lamp indicator and buzzer;
Figure 1b shows bottom view of the milk boiling alarm device illustrating heat sensor;
Figure 1 c shows cover plate of vessel having a hole at centre to locate the said heat sensor.
Figure 2a shows cover plate of vessel without hole.
Figure 2b shows top view of the milk boiling alarm device illustrating push button on/off switch, LED lamp indicator and buzzer; the device placed on the cover plate without hole
Figure 3 shows the plan for layout diagram of sensor and low battery circuit.
Figure 4 Shows block diagram of 'Milk Boiling Alarm Device'.
DESCRIPTION :
Referring to figures 1 to 4 the milk boiling alarm device adapted to place on the cover plate of milk boiling vessel. The said device comprises hollow body consisting of bottom part having a hole and a top part. A heat sensing circuit powered by a battery with (1) push button to power ON/OFF and (3) LED light indicator, for

indicating device working and to indicate Battery condition, mounted in the mountings formed in the said hollow body. A (2) buzzer, for generating audible sound when milk is almost about to get boiled, connected to the out put of the said heat sensing circuit. A heat sensor, for input signal for triggering circuit board (7) when temperature of milk is about to boil, connected to the input of the said heat sensing circuit. The said heat sensor mounted in the said hole of the hollow bottom part so as to protrude out. Three mounting holes made on top part of said hollow body for mounting said push button on/off switch, LED indicator and buzzer.
For proper functioning of device battery condition should be good. To check the battery condition a known low battery indicator circuit is connected across battery terminal. In case battery is low visual/audible alarm generated for visual alarm a red LED lamp is provided in the circuit and a buzzer generate audible alarm. The device is supported with a low battery indicator circuit, indicate RED LED glow with flash if battery power is low. Which in turn helps the device to function properly in operational battery- power range and avoids false alarm. The said low battery circuit, mounted in the said hollow bottom part, connected to the said battery terminal for indicating glowing red LED light to show low battery condition.
The LED light indicator for device working status is of green colour. Instead of two separate LED light indicator it is conveniently provided with single dual colour LED light indicator having green and red light indicator and same is connected to the said sensor circuit and low battery circuit with respective colour light as required.
The heat sensor (4 ) is a thermistor.
The followings are the component shown in the figures with numerals .
Push Button(1), Buzzer(2),Light indicator(3),Heat sensor(4), Metal cover plate 22 gauge thickness{5),Batteries(6), heat sensor Circuit board(7) and low battery circuit

Working of Device:
The Milk will be placed in the vessel having straight top so that it will be covered flat stainless steel metal plate. The said cover plate thickness should not more than 22 gauge or thicker. The space between Milk level in the vessel and cover plate should not less than 3 cm, having more space will be advisable. It is preferred to put heat on LOW or MEDIUM mode, so that milk warming process will be slow and gradual.
User will need to activate the milk boiling alarm device by pressing push button (1). This device first checks if Battery power status is in operational range. If battery is low then RED LED will flash with audible sound, suggesting to replace with new battery. Green LED on the device will glow with flash indicating device is working with power ON mode. Device will be placed exactly at the center of cover plate. Due to which heat sensor (4) which is located at the bottom of the device will be nearly center of the cover plate and in close contact with cover plate. Optionally a centre hole may be made to direct expose the heat sensor to steam /vapor released from the boiling milk. The hole in the center of plate facilitate for locating heat sensor in the centre. The cover plate without hole in the centre optionally used instead of the plate with a centre hole.
When the milk starts getting warm, it will gradually start making hot steam, When the temperature of the steam above the milk reaches almost 65-75oc, which correspondingly changes the temperature of metal cover plate which is kept over the vessel. The Heat sensor (4) triggers the circuit board (7), which activates the Buzzer (2) by making audible sound and flash with RED Led. It is likely that user is going to perform other activities and may be in other room away from kitchen. The circuit triggering temperature is set such way that device makes sound and RED LED flash almost 2 minute before milk actually boils, which helps user to get time to reach kitchen. Since milk is almost ready to boil, user will need to remove the device and cover plate from the vessel. Switch off the Power mode for longer life of batteries, the LED light will be off. Depending on need user may further boil the milk or turn the heat off to preserve proteins in the milk.
Some places user prefer to boil milk 2-3 times in whole day. For Fresh cold milk the device will alarm bit earlier than milk which is already gone through the first boiling condition.
Advantages of this Invention:
1. This device helps to notify user when milk is almost ready to boil, User can save time and can perform other activities.

2. Since it helps avoiding spilling of milk , in turn saves time may require to cleaning mess. Helps to avoid frustration.
3. For some user it saves Gas since sometimes user may totally forgot for milk kept boiling on gas.
4. Since device is not in touch with milk there is no chance of contamination .
5. Does not need any special and costly installation for connection. Very easy and simple to use and very low cost compared to other options available in market.

I claim:
1. A milk boiling alarm device adapted to place on the cover plate of milk boiling vessel comprises hollow body bottom part having a hole and a top part; a heat sensing circuit powered by a battery with (1) push button to power ON/OFF and (3) LED light indicator, for indicating device working, mounted mountings formed in the said hollow body ;a(2) buzzer, for generating audible sound when milk is almost about to get boiled, connected to the output of the said heat sensing circuit ; a heat sensor, for input signal for triggering circuit board (7) when temperature of milk is about to boil, connected to the input of the said heat sensing circuit; the said heat sensor mounted in the said hole of the hollow bottom part so as to protrude out; three mounting holes made on top part of said hollow body for mounting said push button on/off switch, LED indicator and buzzer.
2. The device as claimed in claim 1 where in a low battery circuit, mounted in the said hollow bottom part, connected to the said battery terminal for indicating glowing red LED light to show low battery condition.
3. The device as claimed in claims 1 and 2 wherein the said LED indicator is duel colour to indicate working on condition by green lamp and low battery condition by red light.
4. The device as claimed in claims 1 to 3 wherein the said hole formed in the hollow body bottom part is at centre.
5. The device as Claimed in claims 1to 4 wherein the mountings for the said heat sensing circuit and the said battery made in the said hollow body bottom part.
6. The device as claimed in claims 1 to 5 the said cover plate provided with a hole in centre for locating device in centre.
7. The device as claimed in claims 1 to 6 wherein the said heat sensor is a thermistor.