FIELD OF INVENTION: This invention is related to non conventional energy sources, where electricity can be generated using gravitational force and buoyancy

PRIOR ART: There are lot of ideas available on generating electricity using gravitational force and buoyancy, but the problem with all of these ideas is pushing the weight in to the liquid when it reaches the bottom, this effort equals the energy gained in circulating the weight in air and liquid. This problem is what exactly addressed in this invention.

OBJECTS OF THE INVENTION: The objective of this invention is to generate electricity from gravitational force and buoyancy overcoming the hurdles faced previously by similar kind of ideas.

Producing clean green energy (electricity) with very low cost using environment friendly techniques.

DESCRIPTION OF THE INVENTION:

We know that product of force and distance is work done and as such if force is available for free, then work can be done at free of cost, gravitational force is available free, so work can be done for free, which means electricity can be generated for free.

According to Archimedes principle when a body is immersed in a fluid it suffers an apparent loss in weight, equal to the weight of the fluid displaced by it. Below I will explain how to generate electricity using gravitational force and buoyancy.

The idea here is to drop a weight from a height in the air and hence it does some amount of work because of the gravitational force. The same weight when it reaches the bottom will be pushed in to a liquid, and lifted inside the liquid, so it requires only less energy to lift because of buoyancy. When the weight reaches the top, it will be dropped in the air again and the process is repeated continuously, so continuous electricity can be produced.

The amount of work done while the weight falls in air will be greater than the work done to lift the same weight, because it is lifted inside liquid. The difference in energy can be used to generate electricity, hence electricity can be generated using only gravitational force and buoyancy, without external forces.

There are lot of ideas and concepts available on this subject, but problem with all of them is the pushing of the weight into the liquid when it reaches the bottom. As the effort required to push the weight into the liquid against the pressure of the liquid is greater than the energy gained by it when falls freely inside the air. This problem is what exactly addressed here.

In the FIG 1, there is a container 1.1 containing liquid 1.3, through which the weight 1.7 can be lifted upwards. An hollow cylinder 1.2 of height "h" closed at the bottom is fitted in the centre of the container, through which the weight 1.6 can be dropped, so that it falls freely inside the cylinder. The lower end of the cylinder is fitted with co-axial tube 1.4 which can slide upward / downward over the cylinder. The bottom of the cylinder is fitted with a door 1.12 which can be opened and closed.

There is a metallic plunger 1.5 below the cylinder, the purpose of this metallic plunger is to occupy space instead of liquid, and the plunger can slide vertically by compressing / releasing the spring 1.11 beneath it. The plunger and the spring are so designed that when the weight is placed on the plunger it plunges until the weight reaches the bottom of the container. The Co- axial tube 1.4 can slide over this plunger 1.5.

FIG 1 represents the complete system, which consists of two weights (w) 1.6, 1.7 of same weight connected to the ends of a rope which runs over a pulley 1.8 attached to a shaft 1.10, which is connected to a generator 1.9. When the weight 1.6 inside the cylinder falls, it lifts the other weight 1.7 in the liquid and rotating the generator 1.9 at the same time.

FIG 2 represents the start position and FIG 2 A is the top view of the cylinder which shows the bottom door 2.2

In FIG 1 the plunger 1.5 is touching the bottom of the cylinder 1.2 and is of same diameter as the cylinder, so the outer tube 1.4 can slide over the plunger 1.5 as well. The main thing here is to push the weight in to the liquid when it reaches the bottom using minimal effort. When the weight reaches the bottom of the cylinder, the outer tube 1.4 is slid vertically downward over the plunger 1.5 and pressed against the bottom of the container. The bottom door 1.12 is opened and the weight is pushed through it. The weight rest over the plunger 1.5 and press the plunger downwards until it reaches the end. Now the bottom door 1.12 is closed and the outer tube 1.4 is slid vertically upwards and the weight is pushed on the sides and thus the weight reaches the bottom of the container 1.1 without experiencing the pressure of the liquid at the bottom.

During the above process, once the weight reaches the bottom of the cylinder it will be un hooked from the rope and pushed in to the container and then hooked to the rope, similarly if the weight reaches the top of the container 1.1 containing liquid 1.3 , it will be pushed in to the hollow cylinder 1.2

Higher the density of the liquid used higher will be the buoyant force and hence less effort is required to lift the weight inside the liquid container

Brief Description about Drawings:

FIG 1 Complete System
1.1- Container
1.2- Hollow cylinder
1.3- Liquid
1.4 - Outer sliding tube
1.5 - Metallic Plunger 1.6, 1.7-Weight
1.8-Pulley 1.9- Generator 1.10-Shaft 1.11- spring 1.12 - Bottom door FIG 2 to FIG 9 shows various positions during operation of the system

FIG 2 Weight is dropped from the top
FIG 2 A Top view of the hollow cylinder
2.1 - Hollow cylinder
2.2 - Bottom door
2.3 - Door handle

FIG 3 Weight reaches the bottom of the cylinder, the outer tube 1.4 is slided downwards
FIG 4 Bottom door opened
FIG 5 Weight pushed through the bottom door
FIG 6 Bottom door closed
FIG 7 Outer tube slid upwards
FIG 8 Weight pushed horizontally in to the cylinder
FIG 9 Weight lifted upwards

Detailed Description:

In FIG 1, weight "W" is dropped from the height "h" inside the cylinder 1.2, which is surrounded by liquid 1.3. The weight 1.6 falls inside the cylinder at the same time lifting the weight 1.7 at the other end and rotating the generator 1.9.

After the weight 1.6 has reached the bottom of the cylinder FIG 3, the weight needs to be pushed in to the liquid with out experiencing the pressure from the liquid, for this the outer tube 1.4 is slide vertically downwards, pushed against the bottom of the container, covering the plunger 1.5 and locked so that it is pressed to the bottom of the container and does not allow the flow of liquid in to the cylinder 1.2.

After the outer tube 1.4 is locked against the bottom of the container, the bottom door 1.12 of the cylinder is opened vertically as shown in FIG 4 and the weight is pushed through it, the weight falls out of the cylinder and the plunger 1.5 gets compressed FIG 5. After the weight comes out of the cylinder the door 1.12 is closed FIG 6 and then the outer tube 1.4 is slide vertically upwards and the weight is pushed horizontally FIG 7, thus the weight 1.6 is pushed in to the liquid 1.3 with out facing the pressure from the liquid.

Now the weight is lifted to the top of the container, since the weight is lifted inside the liquid FIG 8 only less effort is required to lift it, compared to the work done by falling inside the cylinder. The work done by the weight by falling inside the cylinder is greater than lifting the same weight inside the liquid in the container, this difference in energy can be used to generate electricity by rotating the generator FIG 9

The bottom of the cylinder 1.2 and the top of the plunger 1.5 are slightly slanting so that very little effort is required to push the weight.

This cycle is repeated continuously.

Calculations:

Work done when the weight falls from the height = w x h Joules
Energy required to lift the weight inside liquid = (w - vpg) x h
Where v is the volume of the liquid displaced
p is the density of the liquid
g is the acceleration due to gravity

Excess energy = w x h - (w - vpg) x h
= wh - wh + vpgh
= vpgh joules

Therefore excess energy available for each cycle is vpgh joules

Of course there are external efforts spent for sliding the tube, opening and closing the bottom door, pushing the weight in to the liquid. But carefully controlling the above factors (vpgh) the there is always excess energy which can be used to rotate generator and hence electricity can be generated.

So we have generated electricity using just gravitational force and buoyancy alone.
Illustration:

Consider a weight of 100 kg (approximate volume of 14 litres) falls from a height of 10 meters in a liquid whose density is 3000 kg/metre3 the excess energy available in each cycle is

Acceleration due to gravity is 9.8 m/sec2 One litre = .001 cu.metre

Excess energy available = 14 x .001 x 3000 x 9.8 x 10
= 4116 Joules

Considering four such cycle during an hour the power generated = 4116x4 Joules / hr
= 4.57 Watts

Similarly if a weight of 5000 kg(volume of 1000 litres), from a height of 25 metres, liquid density 6000 kg / metre3, then the power generated in one hour = 1633.333 watts

So even 600 watts is spent to achieve this, we have excess 1000 watts which can be used.

CLAIMS

1. I Claim that the device generating electricity from gravitational force and buoyancy by allowing weight to fall in the air and lifting the same eight inside liquid, without experiencing the liquid pressure at the bottom.

2. The mechanism of pushing the weight, which falls from air, in to the liquid without experiencing the liquid pressure. When the weight has reached the bottom, the outer tube is slid vertically downwards over the metallic plunger and pressed against the bottom of the container, thus preventing the flow of liquid and opening the bottom door, pushing the weight over the plunger, closing the bottom door, sliding the outer tube upwards and pushing the weight in to the liquid with out experiencing the liquid pressure.

3. A device which generates electricity using gravitational force and buoyancy as herein described and illustrated in the figures of the accompanying drawings.