Patent US3874472A successfully refreshed from Google Patents.
US3874472A
Expired / Lapsed
US
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Battery powered vehicle drive
Assignee: West Virginia High Bird Corp
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Filing: 1974-01-25
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Granted: 1975-04-01
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Expires: 1994-01-25
Abstract
Abstract Two banks of batteries are alternately charged from a main generator driven by a low power gasoline engine. The battery set disconnected from the generator powered charging section, energizes a drive motor from which a vehicle is propelled at a speed determined by a motor speed controller. At a lower speed limit, a coast generator driven by a flywheel is enabled to begin charging of the motor energizing battery set under coasting conditions.
Inventors
- 👤 Clifford T Deane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:09
CPC Classifications
B; B60; B60L; B60L50/00; B60L50/50; B60L50/60; B60L50/66; B60L50/30; B60L50/52; B60L50/61; B60L50/62; B60L53/00; B60L53/10; B60L53/14; B60L58/00; B60L58/10; B60L58/18; F; F02; F02B; F02B1/00; F02B1/02; F02B1/04; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/62; Y02T10/70; Y02T10/7072; Y02T90/00; Y02T90/10; Y02T90/14
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
131 words
In combination with a vehicle having an internal combustion engine, a drive propelling transmission and a flywheel driven by the transmission, a drive motor connected to the transmission for propelling the vehicle, generator means driven by the engine for generating a source of electrical energy, at least two energy storing battery assemblies for alternately storing the electrical energy output of the generator means, charging circuit means connected to the generator means for charging one of the battery assemblies while the other of the battery assemblies is energizing the drive motor, an auxiliary generator continuously driven by the flywheel and connected to the charging circuit means, and coast control means connected to the auxiliary generator for enabling the same under coasting conditions of the vehicle to charge one of the battery assemblies.
Claim 2
Dependent Claim
131 words
In combination with a vehicle having an internal combustion engine, a drive propelling transmission and a flywheel driven by the transmission, a drive motor connected to the transmission for propelling the vehicle, generator means driven by the engine for generating a source of electrical energy, at least two energy storing battery assemblies for alternately storing the electrical energy output of the generator means, charging circuit means connected to the generator means for charging one of the battery assemblies while the other of the battery assemblies is energizing the drive motor, an auxiliary generator continuously driven by the flywheel and connected to the charging circuit means, and coast control means connected to the auxiliary generator for enabling the same under coasting conditions of the vehicle to charge one of the battery assemblies.
Claim 3
Dependent Claim
50 words
The combination of claim 1 including speed control means connected to the drive motor for increasing the speed thereof from a lower limit, and means interconnecting the speed control means with the coast control means for enabling the auxiliary generator only at said lower limit of the drive motor speed.
Claim 4
Dependent Claim
50 words
The combination of claim 1 wherein said charging circuit means includes a change-over switch device interconnecting the battery assemblies with the generator means and the auxiliary generator, and switch actuating means connected to the switch device for periodically interchanging the battery assemblies respectively being charged and energizing the drive motor.
Claim 5
Dependent Claim
35 words
The combination of claim 3 including speed control means interconnecting the drive motor with the change-over switch device for varying the speed of the drive motor while energized by the other of the battery assemblies.
Claim 6
Dependent Claim
13 words
The combination of claim 3 wherein said switch actuating means includes a timer.
Claim 7
Dependent Claim
50 words
The combination of claim 3 including speed control means connected to the drive motor for increasing the speed thereof from a lower limit, and means interconnecting the speed control means with the coast control means for enabling the auxiliary generator only at said lower limit of the drive motor speed.
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) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |