GB2409112A - Generating electric power from passing vehicle wheel. - Google Patents

Generating electric power from passing vehicle wheel. Download PDF

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Publication number
GB2409112A
GB2409112A GB0328487A GB0328487A GB2409112A GB 2409112 A GB2409112 A GB 2409112A GB 0328487 A GB0328487 A GB 0328487A GB 0328487 A GB0328487 A GB 0328487A GB 2409112 A GB2409112 A GB 2409112A
Authority
GB
United Kingdom
Prior art keywords
receiving member
frame
power generator
receiving
fluid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB0328487A
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GB0328487D0 (en
Inventor
Dallas Glyn Twyman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB0328487A priority Critical patent/GB2409112A/en
Publication of GB0328487D0 publication Critical patent/GB0328487D0/en
Publication of GB2409112A publication Critical patent/GB2409112A/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
    • H02K7/1807—Rotary generators
    • H02K7/1853—Rotary generators driven by intermittent forces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
    • F03G7/08—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for recovering energy derived from swinging, rolling, pitching or like movements, e.g. from the vibrations of a machine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
    • F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
    • F04B9/109—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers
    • F04B9/111—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers with two mechanically connected pumping members
    • F04B9/1115—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers with two mechanically connected pumping members the movement of the pumping pistons in only one direction being obtained by a single-acting piston liquid motor, e.g. actuation in the other direction by spring means

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Power Engineering (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Abstract

A displaceable member 12 for receiving a vehicle wheel, is supported in a frame via springs 50 and operates fluid pump 34 to drive via turbine 20 a pair of generators 22, 24. Non return valves 46, 48 and a reservoir 42 are provided. The frame may be mounted in a road surface and multiple members 12 and associated pumps may be present.

Description

240911 2
AN APPARATUS FOR GENERATING ELECTRICAL POWER
The present invention relates to an apparatus for generating electrical power, particularly, but not exclusively to an apparatus for generating electrical power at the roadside.
Electrical power is not always available at the roadside in remote areas. The present invention aims to overcome this problem and/or to provide improvements generally.
According to the invention there is provided an apparatus and a method for generating electrical power as defined in any of the accompanying claims.
In an embodiment of the invention, there is provided a method of generating electrical power comprising providing a member for receiving a vehicle wheel; providing a frame for mounting the receiving member, the receiving member being displaceable relative to the frame upon receiving the vehicle wheel; providing means for generating electrical power) providing means for driving the power generator, and connecting the drive means to the receiving member such that displacement of the receiving member causes the drive means to drive the power generator to generate electrical power.
In another embodiment of the invention, there is provided an apparatus for generating electrical power comprising: a frame; a member for receiving a vehicle wheel, the receiving member being connected to the frame, the receiving member being displaceable relative to the frame upon receiving the vehicle wheel) a power generator for generating electrical power, and; means for driving the power generator, the drive means being connected to the receiving member such that displacement of the receiving member causes the drive means to drive the power generator.
In a preferred embodiment, the drive means comprises a circuit for conveying a displaceable fluid, the fluid driving the power generator. The displacement of the receiving member thus provides hydraulic power to drive the power generator. Hydraulic power has the important advantage that the power generator can be located in any position in relation to the receiving member as the circuit allows the fluid to be conveyed to the power generating means in any location. However, preferably, the power generator is located adjacent the receiving member to minimise pressure losses through the circuit.
Preferably, the power generator is located outside the frame and the fluid conveying circuit extends from the frame outside the frame to the power generator. The frame may be configured to allow simple installation and removal of the apparatus in a road surface. This provides quick and convenient installation of the apparatus. In case of maintenance or repair of the apparatus, the frame containing the receiving member and part of the fluid conveying circuit can be conveniently removed and replaced.
The circuit may be connected to the power generator by means of a releasable coupling to facilitate installation and removal of the frame.
In yet another embodiment, the drive means comprises a fluid conveying closed circuit comprising at least one piston cooperating with at least one cylinder and means for conveying the fluid from the cylinder to the power generator and back therefrom. The piston may be connected to the receiving member.
Preferably, the drive means comprises a number of cylinders and associated pistons so as to provide sufficient hydraulic power to drive the power generator. The pistons may be connected to the receiving member. The circuit conveys the flow from the cylinders to the power generator and back from the power generator to the cylinders.
The fluid conveying circuit may comprise one or more feeder conduits for conveying fluid from a cylinder to the power generator. The fluid conveying circuit may further comprise one or more return conduits for conveying fluid from the power generator to a cylinder.
In yet another embodiment of the invention, the cross sectional area of the cylinder is larger than the cross- sectional area of the feeder conduit. In this way, as the pressure in the conduit and the cylinder is approximately equal, the force that is provided by the fluid in the feeder conduit is greater than the force as applied by the receiving member on the piston.
In a further embodiment, the receiving member mechanically drives the power generator. The drive means may comprise a crankshaft and/or gearing. The receiving member may be connected to the crankshaft and/or gearing. In this way, the receiving member activates a crankshaft which drives the power generator. In this way the reciprocal movement of the receiving member powers the power generator mechanically. The power generator may comprise a flywheel to maintain movement of the power generator to prevent the power generator from stalling when the receiving member is activated intermittently.
In a further embodiment, the circuit comprises one or more non-return valves and a reservoir. A non-return valve allows fluid to be conveyed in one direction and prevents flow in an opposite direction. Preferably, a non-return valve is located inside the feeder conduit. A further nonreturn valve may be located in the return conduit.
The non-return valve in the return conduit may be closed when the piston moves to express fluid into the feeder conduit to prevent fluid from being conveyed through the return conduit, the non-return valve in the feeder conduit is then open; whereas the non-return valve in the return conduit is in an open position when fluid is conveyed from the return conduit into the cylinder when the piston moves to take in fluid from the return conduit, the non-return valve in the feeder conduit is then closed.
In another embodiment, non-return feeder valves may be provided for each individual cylinder. These valves close as the piston is moved to express fluid from the cylinder into the feeder conduit.
In yet another embodiment of the invention, the apparatus comprises one or more members for resiliently biasing the receiving member in relation to the frame. In this way the receiving member returns to its initial position after displacement caused by the contact with the vehicle wheel.
The biasing member may be a resilient member such as a spring.
The receiving member may be pivotally connected to the piston. In yet another embodiment of the invention, the receiving member is connected to the piston by means of a rod. Preferably, the rod is pivotally mounted to the receiving member and to the piston. The pivotal connection provides greater flexibility as it allows both lateral and longitudinal movements of the receiving member in relation to the piston. The longitudinal movement of the piston provides the displacement of the fluid in the cylinder.
However, when the vehicle wheel contacts the receiving member, the receiving member is also displaced laterally relative to the frame. The pivotal connection allows the piston to be moved longitudinally whilst the receiving member is moved longitudinally and laterally relative to the frame by the vehicle wheel.
When the receiving member is in an initial starting position, fluid is contained in the cylinder. Upon a vehicle or other object contacting the receiving member, the receiving member depresses the piston inside the cylinder thereby causing the fluid contained in the cylinder to be expressed via the feeder conduit to the power generator to drive the power generator. When the receiving member is released, the receiving member returns from its displaced position to its initial position in which it is resiliently biased and the non-return valve in the return conduit is open to fill the cylinder with the fluid from the reservoir. When the cylinder is filled, the non-return valve in the feeder conduit is closed.
In another embodiment of the invention, the frame is adapted to be applied to a road surface. In this way the receiving member may be provided in a road surface. This allows the vehicle wheels to contact the receiving member as the wheels move across the member. This causes displacement of the receiving member which, subsequently, results in the generation of electrical power. The receiving member may be effectively displaced by the weight of the vehicle. In addition or alternatively, the receiving member may be displaced by the impact of the vehicle wheel or wheels on the receiving member.
The receiving member may comprise a flat or a curved surface. In another embodiment, the receiving member may comprise a ramp such as the ramps commonly known as speed ramps or speed bumps for slowing down vehicles in built up areas. In a further advantageous embodiment, the apparatus may be applied to actively reduce the vehicle speed by receiving the vehicle wheel or wheels.
In another embodiment of the invention, the receiving member extends outside the road surface in its initial position and the displaced receiving member is approximately flush with the road surface. In a preferred embodiment, the receiving member is slightly proud of the road surface to allow it to be contacted by the vehicle wheel and to be displaced. Preferably, the displacement of the receiving member is marginal, between 0.5 cm and 10 cm, preferably between 1 cm and 5 cm, and, upon displacement, the receiving member is approximately flush with the road surface. In this way, the vehicle driver and passengers do not notice or only marginally notice the vehicle wheels contacting the receiving member.
The power generator may comprise a turbine in combination with one or more generators. The turbine is driven by the fluid conveyed by the circuit. Preferably, the turbine is of an impeller type. However, any suitable fluid driven power generator may be applied.
The apparatus as herein described has applications in road surfaces. Advantageously, the apparatus is located in road surfaces with high traffic levels. In this way, an approximately continuous flow of fluid is produced which powers the power generating means. Preferably, the apparatus is configured in such a way that the receiving member returns to its initial position shortly after contact with the vehicle wheels such that the power generator are activated by both the front wheels and the rear wheels of a vehicle as it passes over the receiving member.
It is clear that multiple receiving members and associated drive means can power a single power generator comprising a turbine in combination with one or more generators. In an advantageous embodiment, the receiving members and associated drive means are located on a roundabout and a single power generator is located centrally at the centre of the roundabout with the feeder and return conduits extending to and from the power generator.
The apparatus is configured in such a way that the receiving member returns to its initial position relatively quickly to allow the receiving member to absorb forces exerted by the individual wheels or sets of wheels of vehicles. In this way, the receiving member is activated as the front wheels of a vehicle pass over the receiving member and the receiving member is again activated as the rear wheels of the vehicle pass over the receiving member.
The configuration and dimensions of the fluid circuit, the power generator and the springs are configured so as to achieve this.
The invention will now described by way of example only and with reference to the accompanying drawings, in which Figure 1 presents an apparatus for generating power according to an embodiment of the invention, Figure 2 presents a detailed view of a receiving member of the apparatus of Figure 1, and Figure 3 presents a further detailed view of a receiving member of the apparatus of Figures 1 and 2.
Figure 1 shows the electrical power generation apparatus (10) comprising a frame (14) and a receiving member (12) for receiving a vehicle wheel (17). The receiving member (12) is connected to the frame (14), and the receiving member (12) is displaceable relative to the frame (14) upon receiving the vehicle wheel (17). The apparatus (10) further comprises a power generator (18) for generating electrical power and means (30) for driving the power generator (18). The drive means (30) is connected to the receiving member (12) in such a way that upon a vehicle wheel (17) contacting the receiving member, the receiving member (12) is displaced which causes the drive means (30) to drive the power generator (18) to produce electricity.
The frame (14) comprises a pair of biasing members (50) in the form of springs (50) for biasing the receiving member in relation to the frame (14). The springs (50) return the receiving member (12) to its initial position after displacement by the contact with a vehicle wheel (17).
The power generator (18) comprises a fluid powered turbine (20) and two electricity generators (22, 24) which are connected to the turbine (20) by two shafts (26, 28).
The drive means comprises a circuit (32) comprising feeder and return conduits (40,44) and cylinders (34). Each cylinder has a piston (36) which moves inside the cylinder (34) in a reciprocal manner. The piston (36) is connected to the receiving member (12) via a rod (38). The feeder conduit (40) is connected to the cylinders (34). The conduit (40) conducts the fluid from the cylinders (34) to the turbine (20) and the reservoir (42) which retains the - 9 - fluid. A return conduit (49) extends from the reservoir (42) to the cylinders (34) to return the fluid into the cylinders (34). The reservoir (42) has a bleed hole (not shown) so that the pressure inside the reservoir (42) is the atmospheric pressure.
The feeder conduit (40) comprises a non-return valve (46) which allows fluid to flow only in the direction as indicated in Fig. 1. This flow occurs when the receiving member (12) is depressed or displaced causing the piston (36) to move downwards inside the cylinder (34).
The return conduit (44) comprises a single non-return valve (not shown) or individual non-return valves (48) for each individual cylinder (34). These valves only allow flow in the direction indicated in Fig. 1 in the return conduit.
This prevents fluid from flowing into the return conduit (44) when the receiving member (12) is depressed.
In use, the apparatus (10) is mounted inside a road surface (16) as is shown in Figures 2 and 3. The feeder and return conduits (40, 44) may extend outside the road surface to a suitable location for the power generator (18). The reservoir (42) may be provided at any location in the circuit (30). However, preferably, the reservoir (42) is located in the vicinity of the power generator (18) to minimise pressure losses over the circuit (30) and to maximise the power generating efficiency of the apparatus ( 1 0) The receiving member (12) is depressed when it is in contact with a vehicle wheel (17) so that the receiving member (12) is displaced in a downward direction as is shown in Figure 3. This results in a displacement of the fluid in the cylinder (34) which causes the fluid in the feeder conduit (40) to be displaced. This powers the turbine (20) which, via the drive shafts (26, 28), drives the generators (22, 24) to provide electricity to a user.
The fluid is further conveyed via the feeder conduit (40) to a reservoir (42). As the vehicle wheel (17) is removed from the receiving member (12), the springs (50) expand which return the receiving member (12) to its initial position as is shown in Figure 2, thereby moving the piston (36) upwards in relation to the cylinder (34). As the piston (36) moves upwards, the non-return valve (46) prevents fluid from flowing into the cylinders (34) from the feeder conduit (40) and the fluid in reservoir is pumped into the cylinders (34) via the return conduit (44) whereby the non-return valves (48) allow the flow of fluid in this direction. The receiving member (12) is then ready to receive a next vehicle wheel (17).
It is clear that the apparatus as hereinbefore described has a wide range of applications. The receiving member may have different shapes so that it is suitable to be mounted in a wide variety of road surfaces including speed ramps and other road furniture.

Claims (14)

  1. An apparatus for generating electrical power comprising: a frame, a member for receiving a vehicle wheel, the receiving member being connected to the frame the receiving member being displaceable relative to the frame upon receiving the vehicle wheel, a power generator for generating electrical power, means for driving the power generator, the drive means being connected to the receiving member such that displacement of the receiving member causes the drive means to drive the power generator.
  2. 2. An apparatus according to claim 1, wherein the drive means comprises a fluid conveying closed circuit.
  3. 3. An apparatus according to claim 2, wherein the circuit comprises at least one piston cooperating with a cylinder and means for conveying the fluid from the cylinder to the power generator and back therefrom.
  4. 4. An apparatus according to claim 3, wherein the cross-sectional area of the cylinder is larger than the cross-sectional area of the conveying means to the power generator.
  5. 5. An apparatus according to any of claims 3 or 4, wherein the receiving member is pivotally connected to the piston.
  6. 6. An apparatus according to any of claims 2 to 5, wherein the circuit comprises one or more non-return valves and a reservoir.
  7. 7. An apparatus according to any of the preceding claims, wherein the drive means are at least partially mounted inside the frame and the power generator is located outside the frame.
  8. 8. An apparatus according to any of the preceding claims, wherein the apparatus comprises one or more members for resiliently biasing the receiving member in relation to the frame in an initial position.
  9. 9. An apparatus according to claim 8, wherein the biasing member is a resilient member such as a spring, the resilient member returning the receiving member to its initial position after displacement.
  10. 10. An apparatus according to any of the preceding claims, wherein the frame is adapted to mount the receiving member in a road surface.
  11. 11. An apparatus according to claim 10, wherein the receiving member extends outside the road surface in its initial position.
  12. 12. An apparatus according to any of the preceding claims, wherein the displaced receiving member is approximately flush with the road surface.
  13. 13. An apparatus according to any of the preceding claims, wherein the power generator comprises a turbine powered by fluid and a generator for generating electricity, the generator being powered by the turbine.
  14. 14. A method of generating electrical power comprising: providing a member for receiving a vehicle wheel, providing a frame, the receiving member being mounted on the frame and the receiving member being displaceable relative to the frame upon receiving the vehicle wheel, providing means for generating electrical power, providing means for driving the power generator, and connecting the drive means to the receiving member such that displacement of the receiving member causes the drive means to drive the power generator to generate electrical power
GB0328487A 2003-12-09 2003-12-09 Generating electric power from passing vehicle wheel. Withdrawn GB2409112A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0328487A GB2409112A (en) 2003-12-09 2003-12-09 Generating electric power from passing vehicle wheel.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0328487A GB2409112A (en) 2003-12-09 2003-12-09 Generating electric power from passing vehicle wheel.

Publications (2)

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GB0328487D0 GB0328487D0 (en) 2004-01-14
GB2409112A true GB2409112A (en) 2005-06-15

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GB0328487A Withdrawn GB2409112A (en) 2003-12-09 2003-12-09 Generating electric power from passing vehicle wheel.

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2427640A (en) * 2005-06-29 2007-01-03 R Nash Traffic calming device for generating electricity
GB2452329A (en) * 2007-09-01 2009-03-04 Stuart James Payne Weight powered fluid turbine system
GB2465217A (en) * 2008-11-13 2010-05-19 Bahjat Mohamad Khalaf Vehicle powered roadway generator
ITMC20090125A1 (en) * 2009-05-21 2010-11-22 Rosario Alberto Sorbellini DEVICE FOR THE GENERATION OF ELECTRICITY.
WO2010007013A3 (en) * 2008-07-14 2010-12-29 Markus Aufleger Hydraulic large-scale energy storage unit
ES2370303A1 (en) * 2008-06-03 2011-12-14 Ángel Perera Araña Row of obstacles in shoes for speed control with energy use. (Machine-translation by Google Translate, not legally binding)
US8164204B2 (en) 2011-02-17 2012-04-24 Jack Shihzong Jang Electrical generator apparatus, particularly for use on a vehicle roadway
US8166760B2 (en) 2008-02-06 2012-05-01 Launchpoint Technologies, Inc. System and method for storing energy
US8928160B2 (en) 2011-02-17 2015-01-06 Jack Shihzong Jang Electrical generator apparatus, particularly for use on a vehicle roadway
US9287753B2 (en) 2011-02-17 2016-03-15 Jack Shihzong Jang Electrical generator apparatus, particularly for use on a vehicle roadway
EP4016810A1 (en) * 2020-12-17 2022-06-22 Juan Carlos Derbartanian Installation for power generation by means of vehicular traffic

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3944855A (en) * 1974-12-12 1976-03-16 Van Allyn, Inc. Method and apparatus for generating electricity by vehicle and pedestrian weight force
US4173431A (en) * 1977-07-11 1979-11-06 Nu-Watt, Inc. Road vehicle-actuated air compressor and system therefor
DE4225578A1 (en) * 1992-08-03 1994-02-17 Friedrich Bauer Road vehicle energy recovery device - has pressure plate(s) in road over which vehicles drive, beneath which are pistons in cylinders driving turbine
DE19623739A1 (en) * 1996-06-14 1997-12-18 Hessabi Iradj Drive for a generator
US6376925B1 (en) * 1998-10-05 2002-04-23 Thomas P. Galich Force stand for electrical energy producing platform

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3944855A (en) * 1974-12-12 1976-03-16 Van Allyn, Inc. Method and apparatus for generating electricity by vehicle and pedestrian weight force
US4173431A (en) * 1977-07-11 1979-11-06 Nu-Watt, Inc. Road vehicle-actuated air compressor and system therefor
DE4225578A1 (en) * 1992-08-03 1994-02-17 Friedrich Bauer Road vehicle energy recovery device - has pressure plate(s) in road over which vehicles drive, beneath which are pistons in cylinders driving turbine
DE19623739A1 (en) * 1996-06-14 1997-12-18 Hessabi Iradj Drive for a generator
US6376925B1 (en) * 1998-10-05 2002-04-23 Thomas P. Galich Force stand for electrical energy producing platform

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2427640A (en) * 2005-06-29 2007-01-03 R Nash Traffic calming device for generating electricity
GB2452329A (en) * 2007-09-01 2009-03-04 Stuart James Payne Weight powered fluid turbine system
US8166760B2 (en) 2008-02-06 2012-05-01 Launchpoint Technologies, Inc. System and method for storing energy
ES2370303A1 (en) * 2008-06-03 2011-12-14 Ángel Perera Araña Row of obstacles in shoes for speed control with energy use. (Machine-translation by Google Translate, not legally binding)
WO2010007013A3 (en) * 2008-07-14 2010-12-29 Markus Aufleger Hydraulic large-scale energy storage unit
GB2465217A (en) * 2008-11-13 2010-05-19 Bahjat Mohamad Khalaf Vehicle powered roadway generator
ITMC20090125A1 (en) * 2009-05-21 2010-11-22 Rosario Alberto Sorbellini DEVICE FOR THE GENERATION OF ELECTRICITY.
US8164204B2 (en) 2011-02-17 2012-04-24 Jack Shihzong Jang Electrical generator apparatus, particularly for use on a vehicle roadway
US8928160B2 (en) 2011-02-17 2015-01-06 Jack Shihzong Jang Electrical generator apparatus, particularly for use on a vehicle roadway
US9287753B2 (en) 2011-02-17 2016-03-15 Jack Shihzong Jang Electrical generator apparatus, particularly for use on a vehicle roadway
EP4016810A1 (en) * 2020-12-17 2022-06-22 Juan Carlos Derbartanian Installation for power generation by means of vehicular traffic

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