US4004422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for utilizing moving traffic for generating electricity and to produce other useful work
Assignee: VAN ALLYN Inc
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Filing: 1975-04-14
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Granted: 1977-01-25
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Expires: 1995-04-14
Abstract
Abstract A method and apparatus for producing useful work by utilizing the weight of moving traffic by incorporating in a roadway or traffic-way a readily deformable chamber which is filled with a fluid arranged so that the weight of a vehicle in passing thereof affects a displacement of the fluid therein. The energy of the displaced fluid in turn is translated into mechanical or electrical energy.
Inventors
- 👤 Wayne P. Le Van
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:42
CPC Classifications
E; E01; E01F; E01F11/00; F; F03; F03G; F03G7/00; F03G7/08; F03G7/081; F03G7/083; F03G7/085
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
171 words
An apparatus for producing useful work by utilizing the energy of moving traffic comprising: a chamber having a flexible wall portion disposed in the path of moving traffic to define a first expansible chamber, a cylinder, a conduit interconnecting said chamber into communication with said cylinder, said conduit having a cross-sectional area which is substantially smaller than the cross-sectional area of said chamber, a piston slideably disposed within said cylinder, said chamber and conduit defining a predetermined volume filled with a incompressible fluid which is trapped between said flexible wall portion and said piston of said first and second expansible chambers, whereby the flow of traffic over said flexible wall portion of said chamber pressurizes the trapped fluid therein to effect the displacement of said piston in response to said pressurized fluid accordingly, a work producing means operatively connected to said piston for translating the displacement of said piston into useful work, and means for restoring said piston to its initial position after the movement traffic has passed over said chamber.
Claim 2
Independent Claim
171 words
An apparatus for producing useful work by utilizing the energy of moving traffic comprising: a chamber having a flexible wall portion disposed in the path of moving traffic to define a first expansible chamber, a cylinder, a conduit interconnecting said chamber into communication with said cylinder, said conduit having a cross-sectional area which is substantially smaller than the cross-sectional area of said chamber, a piston slideably disposed within said cylinder, said chamber and conduit defining a predetermined volume filled with a incompressible fluid which is trapped between said flexible wall portion and said piston of said first and second expansible chambers, whereby the flow of traffic over said flexible wall portion of said chamber pressurizes the trapped fluid therein to effect the displacement of said piston in response to said pressurized fluid accordingly, a work producing means operatively connected to said piston for translating the displacement of said piston into useful work, and means for restoring said piston to its initial position after the movement traffic has passed over said chamber.
Claim 3
Dependent Claim
41 words
The invention as defined in claim 1 and including: a roadway over which vehicle traffic flows, said roadway having a moveable contact member located in the plane of the roadway, and said flexible chamber being disposed contiguous to said contact member.
Claim 4
Dependent Claim
60 words
The invention as defined in claim 2 wherein said work producing means comprises a drive shaft operatively connected to said piston, a spiral drive mounted on said drive shaft, a unidirectional clutch operatively connected to said spiral drive of said drive shaft, and a driving means operatively connected to said clutch to be activated thereby when said clutch is activated.
Claim 5
Dependent Claim
59 words
The invention as defined in claim 1 and including a reservoir for containing a supply of said incompressible fluid, a supply duct connecting said reservoir into communication with said first expansible chamber, a one way valve interposed in said supply duct, and a pump means for pumping the fluid from said reservoir to said chamber filled with said liquid.
Claim 6
Independent Claim
162 words
An apparatus for producing useful work by utilizing the energy of moving traffic comprising: a traffic way over which traffic flows, said traffic way having a deflectable portion, a chamber having a flexible wall portion to define a first expansible chamber disposed continguous to said deflectable portion, means for maintaining said chamber filled with an incompressible fluid, a cylinder disposed in communication with said chamber, a piston slideably disposed within said cylinder to define a second expansible chamber whereby said fluid is trapped between the flexible wall of said first expansible chamber and the piston of said second expansible chamber, a drive shaft connected to said piston which is rendered responsive to the displacement of said piston when the flow of moving traffic over said deflectable portion effects displacement of said flexible wall to pressurize the fluid in said chamber and which is transmitted accordingly to said piston and, a work producing means connected to said drive shaft activated by said piston.
Claim 7
Independent Claim
162 words
An apparatus for producing useful work by utilizing the energy of moving traffic comprising: a traffic way over which traffic flows, said traffic way having a deflectable portion, a chamber having a flexible wall portion to define a first expansible chamber disposed continguous to said deflectable portion, means for maintaining said chamber filled with an incompressible fluid, a cylinder disposed in communication with said chamber, a piston slideably disposed within said cylinder to define a second expansible chamber whereby said fluid is trapped between the flexible wall of said first expansible chamber and the piston of said second expansible chamber, a drive shaft connected to said piston which is rendered responsive to the displacement of said piston when the flow of moving traffic over said deflectable portion effects displacement of said flexible wall to pressurize the fluid in said chamber and which is transmitted accordingly to said piston and, a work producing means connected to said drive shaft activated by said piston.
Claim 8
Dependent Claim
84 words
The invention as defined in claim 1 and including a drive shaft operatively connected to said piston, said drive shaft having a spiral drive, a unidirectional clutch means connected to said spiral drive, an electric generator connected in driving relationship with said clutch means, whereby said generator is driven by the displacement of said liquid acting on said piston when said moveable section is displaced by the flow of traffic thereover, and a spring means for normally biasing said piston toward an inoperative position.
Claim 9
Independent Claim
119 words
A method of producing useful work by utilising the flow of moving traffic comprising the steps of: locating a chamber of a flexible wall portion in the path of moving traffic defining a first expansible chamber whereby the weight of the traffic passing over said flexible wall portion effects a displacement thereof, connecting a second expansible chamber having a moveable piston in communication with said first expansible chamber, trapping an incompressible fluid between said expansible chambers so that the displacement of said flexible wall by the flow of moving traffic thereover pressurizes said incompressible fluid which transmits a fluid pressure on the moveable piston of said second expansible chamber, and translating the displacement of said piston into useful work.
Claim 10
Independent Claim
119 words
A method of producing useful work by utilising the flow of moving traffic comprising the steps of: locating a chamber of a flexible wall portion in the path of moving traffic defining a first expansible chamber whereby the weight of the traffic passing over said flexible wall portion effects a displacement thereof, connecting a second expansible chamber having a moveable piston in communication with said first expansible chamber, trapping an incompressible fluid between said expansible chambers so that the displacement of said flexible wall by the flow of moving traffic thereover pressurizes said incompressible fluid which transmits a fluid pressure on the moveable piston of said second expansible chamber, and translating the displacement of said piston into useful work.
Claim 11
Dependent Claim
18 words
The method as defined in claim 7 wherein the displacement of said piston is utilized to generate electricity.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-01-25 | 1980-07-26 | 1981-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-25 | 1984-07-26 | 1985-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-25 | 1988-07-26 | 1989-01-25 | $7700.00 | Window Closed / Lapsed |