Title of Invention	"A PORTABLE WINDMILL"
Abstract	A portable windmill comprising a blade assembly having at least two blades and a central body portion, said blade assembly is connected to the rotor of a dynamo/alternator, power out put terminals of the said dynamo/alternator are connected by a cable to transmit the generated power to the input provision of an electricity storage device or any device requiring power for its-operation.

Full Text

Field of the invention:- The present invention relates to a portable windmill operable by artificial wind energy, produced in the opposite direction, when a vehicle or a person is moving with some speed or with the artificial wind produced by fan or blower. Large differences in the incident solar flux on the earth's upper surface lead to different air temperatures all over the globe, hi regions with strong solar radiation, the atmospheric air gets heated, and it expands giving rise to a high-pressure region. At places where radiation is less, air gets cooler giving rise to a low-pressure region. These air pressure differences in the atmosphere cause an acceleration of air particles as a result of which air movement begins. This air movement is termed as wind. The winds, which originate due to pressure gradients, are called as gradient winds." In other words, wind in general means which comes naturally, as explained above, and more particularly, in the present context, using wind by the windmills, as a source, which are attached to the earth or a permanent structure and converting it into electrical energy. BACKGROUND: It is known to the art that the energy of wind can be utilized to turn turbines of the electric generators. The capacity of electricity generated is also to be dependent on the wind speed. It is well known that hundreds of wind mills in different parts of the country and abroad are being successfully operated utilizing wind power for the generation of electricity and /or for running pumps for irrigation purpose and the like. Significantly enough, the wind power is found to have an advantageous overall efficiency as compared to other non-conventional energy source such as the solar energy, in particular the average efficiency of windmills is found to be 35% as compared to 5-15% available in solar units. The use of wind power to generate electricity is thus common and the methodology involved comprises of conveying the motion of wind to the dynamo to generate electricity. The electricity thus generated can be utilized immediately or stored in batteries or can also be possibly fed into the regional power grid. The conventional wind power for the generation of electricity as discussed above, are large in dimensions and are required to be installed on the ground. Such wind mills are essentially of huge dimensions with the blade assembly area covering approximately a circular part of about 5 meters diameter. Accordingly for installation of such windmills having (Swept Area) a blade configuration of the dimensions as noted above, the support system for the wind mill also requires a corresponding huge and stable base structure. Importantly, such conventional wind mills have specific constructional requirements including the very high height (approx 30 meters) of the installation tower, large dimensional area of coverage for the blades, the orientation of the blade with respect to wind as also the ground for installation of the turbine tower. In view of the above said, the utility of wind energy was restricted over the years to only large-scale generation of electricity. It was thus known the volume of space and area of operation was required for installation of wind mills for generation of large scale electricity and no small scale utility based application of wind power is known to (he art. Disadvantages of conventional windmills; - Large areas are needed, typically, propellers 1 to 3 meters in diameter, deliver power in the 30 to 300 W range. - Present indications are that the optimum economic diameter of a wind turbine with a two-bladed-propeller type blade assembly is about 110 meters; the electric power output would range from 2000 to 5000 kW or 2 to 5 megawatts (MW), where 1 MW is 1000 kW or 1 million watts. - Towers: Four types of supporting towers deserve consideration, these are: (a) the reinforced concrete tower (b) the pole tower (c) the built up shell-tube tower (d) the truss tower. - The minimum tower height for a small WECS is about 10 meters, and the maximum practical height is estimated to be roughly 60 meters. "Importantly, it was further experienced that a mere proportionate reduction in the dimension of the wind mill and its installation structure from those conventionally used for generation of large scale electrical energy was not sufficient to provide utility based small scale application of wind power". It is thus evident that although knowledge is available in the field to convert wind power into electrical energy by way of the conventional wind mills, such useful characteristics of a non-conventional energy source such as wind power could not be extended to use for generating required small scale out put Power (electricity) for portable and handy utilization of the wind power as a source of non-conventional energy for operating appliances/instruments requiring small scale input power. A moving person who requires electricity in order to operate portable devices is not in a position to get electricity produced by the conventional windmills, taking into consideration the disadvantages, as explained above. Since the person on the move cannot utilize or get the electricity from the convention windmills, the present "new product", is projected to serve the need of the person on the move without using any kind of man power or muscle power or physical energy to generate the required electricity to utilize the same for operating portable devices. The present invention is a new product and is an independent device which is handy and can be carried along with the end user, using the artificial wind, as the source for generating electricity, available in the opposite direction of a person who is on the move or utilizing the wind generated by fans, blowers etc., for generating electricity to operate portable devices or recharge batteries of portable devices. The existing and the conventional windmills are stationary and are fixed and/or planted to the ground or any permanent fixtures and are not movable and they cannot be carried along with an individual person, to generate electricity. The electricity generated by the conventional and existing wind mills, cannot be easily transmitted to the persons on the move who requires electricity to operate portable devices or recharge batteries of portable devices. SUMMARY OF THE INVENTION: To achieve the said objective, the present invention relates to a portable windmill comprising: a blade assembly having at least two blades and a central body portion, said blade assembly is connected to the rotor of a Dynamo / Alternator power output terminals of the said dynamo /alternator are connected to the input terminals of a power regulating circuit, output terminals of the said regulating circuit are connected by a cable to transmit the regulated power to the input provision of an electricity storage device or any device requiring power for its operation. The blade assembly comprises of a main central body portion and blades, which are ^attachable/detachable to the central body portion. The central body portion comprises of at least two blades, and the blades are of lightweight and plastic material/ fibre for optimum utilization of the wind energy for generating electricity. The central body portion is of 1 mm to 55 mm in length and 0.5 mm to 50 mm in diameter. The blades are provided with aerodynamic angle ranging from 0.1 to 45 degree configuration, to oppose wind energy. The swept area (area of coverage) of the blade assembly surface is having a diameter ranging from 10 mm to 250 mm. The blade assembly is connected to the bush/bearing of the dynamo/alternator and the dimension of the connecting means is ranging from 1 mm to 55 mm, as first dimension, from 0.5m to 10 mm as second dimension, from 0.lm to 10, as third dimension. The dynamo/alternator used in the present invention is having a capacity ranging between 0.01 Wto 15W. The electronic circuit used in the present invention collects the output form the end terminals of the dynamo/alternator and then regulates the voltage, current and frequency, and it transmits through a means, which is connected to the output terminals of the said electronic circuit and the same is then connected to the electricity storage device or a gadget which requires power for its operation. The means connected to the output terminals of the said electronic regulating circuit to transmit the regulated power to the input provision of an electricity storage device or a gadget requiring power for its operation. It is, thus, the basic objective of the present invention to provide for a portable windmill operable under non-conventional energy source such as wind Power which would be easy to assemble, disassemble, carry and operate during travel in moving vehicles such as train, car and the like. Another object of the present invention is to provide for a portable windmill which can be utilized as a power source for charging a rechargeable battery, the latter provided to operate small scale power consuming devices such as portable audios, (Pocket/portable) TVs, laptops, video games, calculators which require input power of only upto about 15V, 1 Amp, i.e. 15W. Further, object of the present invention is directed to providing for an electric power generating system using non-conventional energy which would be simple to operate and can be transported from one place to another during travel in motion, in particular while travelling in/by trains, cars, 3 wheeler/2 wheeler etc. to thereby provide for a source of electricity/power in such vehicles to operate small scale power consuming devices of the type mentioned above. Another object of the present invention is directed to provide for a safe and convenient to operate power generating device workable on wind power generated during motion on vehicles such as trains, cars etc., and in front of fans, blowers etc., The portable windmill as described above, is invented keeping in view the need to make it as a product which is easy to carry, easy to assemble/disassemble, and at the same time, the components are light weight and affordable to the end user. The details of the invention, its objective and advantages will be more apparent from the ensuring description made with relation to non-limiting exemplary embodiment of the portable windmill (the present invention), as per the accompanying figures. Figure 1 is the vertical sectional view along through the portable windmill of the present invention. Figure 2 is the front view of the blade assembly (BA) used in the portable windmill of the invention. Figure 3 is the vertical sectional view of the dynamo (D) used in the portable windmill of the invention. Figure 4 is the vertical sectional view of the blade assembly (BA) having central body portion (CBP) connected with two blades (BL) used in the portable windmill of the invention. Figure 5 is the front side view of the blade assembly having more than two numbers of blades used along with alternator in the present invention portable windmill (PWM). Figure 6 is the vertical sectional view of the above said blade having more blades connected to the central body portion. Figure 7 is the vertical sectional view of the alternator of the present invention wherein the rotor (R) is the permanent magnet. Figure 8 is the backside view of the alternator (A) used in the present invention of portable windmill. Figure 9 is the backside view of the blade (BL) having the alternator (A) in it's central body portion (CBP) of the present invention. BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS: Reference is first invited to figures 1 and 2, which show a vertical sectional view of the portable windmill of the present invention. As illustrated in said figure 1 the portable windmill generally indicated by reference (PWM) comprises of the Blade assembly (BA), a rotatable shaft (S), the bush/bearing (B) supporting said rotary shaft. The shaft (S) is rotatably supported by the bush/bearing (B), with its one end protruding out of the said bush/bearing, is connected to the Blade assembly (BA). Through the said process, the rotary motion of the blade assembly which is generated by the wind energy, during motion of a vehicle, i.e., the artificial wind that is produced in the opposite direction of the windmill, when in motion, the same is transmitted on to the shaft (S) and then to the rotor of the dynamo/alternator thereby generating electrical power at the terminals of the dynamo/alternator. As would be evident from the above description, the components used for the portable windmill of the present invention can be achieved from the disclosure of the non-limiting exemplary embodiment as described above and the scope of the invention should necessarily be governed keeping in view such obvious components of the invention disclosed herein. I Claim; 1. A portable windmill comprising: a blade assembly having at least two blades and a central body portion, said blade assembly is connected to the rotor of a Dynamo / Alternator, power output terminals of the said dynamo /alternator are connected to the input terminals of a power regulating circuit, output terminals of the said regulating circuit are connected by a cable to transmit the regulated power to the input provision of an electricity storage device or any device requiring power for its operation. 2. A portable windmill as claimed in claim 1 wherein said blades are attachable/detachable to said central body portion of said blade assembly. 3. A portable windmill as claimed in claims 1 and 2, wherein, said central body portion of the blade assembly having a length ranging from 1 mm to 55 mm and a diameter ranging from 1 mm to 50 mm. 4. A portable windmill as claimed in claim 1 to 3, wherein, said blade assembly covers a circular area ranging from 10 mm to 250mm. 5. A portable windmill as claimed in any one of the claims 1 to 4, wherein, said blade assembly is provided with at least two blades having aerodynamic angle ranging from 0.1 to 45 degrees. 6. A portable windmill as claimed in any one of claims 1 to 5, wherein, said dynamo/alternator has a capacity ranging from 0.1W to 15W. 7. A portable windmill as claimed in any one of the claims 1 to 6, wherein, said regulating circuit is an electronic circuit regulates the current, voltage, and frequency of the electricity generated by the said dynamo / alternator. 8. A portable windmill substantially as herein described and illustrated with reference to the accompanying figures.

Documents:

1277-del-2002-abstract.pdf

1277-del-2002-claims.pdf

1277-del-2002-correspondence-others.pdf

1277-del-2002-correspondence-po.pdf

1277-del-2002-description (complete).pdf

1277-del-2002-drawings.pdf

1277-del-2002-form-1.pdf

1277-del-2002-form-13.pdf

1277-del-2002-form-19.pdf

1277-del-2002-form-2.pdf

1277-del-2002-form-3.pdf

1277-del-2002-gpa.pdf