US3904947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle mounted battery charging system for an electric motor vehicle
Assignee: Individual
•
Filing: 1973-08-22
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Granted: 1975-09-09
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Expires: 1993-08-22
Abstract
Abstract A battery charging system is permanently installed on board an electric motor vehicle for enabling the vehicle batteries to be recharged from conveniently located alternating-current power outlets. Among other things, the vehicle mounted battery charging system includes an anti-driveaway interlock mechanism for preventing the driver from driving off in the vehicle while it is plugged into an alternating-current power outlet, a low charge lockout mechanism for preventing inadvertent use of the electric motor vehicle when the battery charge is below the level required for a journey of minimum distance and a charge rate selector mechanism for enabling the vehicle operator to select the length of charging time to be used.
Inventors
- 👤 Roy E Crews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:56
CPC Classifications
B; B60; B60L; B60L53/00; B60L53/10; B60L53/14; B60L53/16; B60L50/00; B60L50/50; B60L50/52; B60L53/11; B60L53/30; B60L53/31; B60L58/00; B60L58/10; B60L58/12; B60L58/13; B60L58/14; H; H02; H02J; H02J7/00; H02J7/02; H02J7/60; H02J7/80; H02J7/82; B60L2250/00; B60L2250/10; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/70; Y02T10/7072; Y02T90/00; Y02T90/10; Y02T90/12; Y02T90/14; Y10; Y10S; Y10S320/00; Y10S320/10; Y10S320/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
174 words
A battery charging system located on board an electric motor vehicle for enabling the vehicle traction battery to be recharged from conveniently located alternating-current power outlets wherein the battery charging system comprises: converter means located on the electric motor vehicle for converting alternating-current power into direct-current power; charge control means located on the electric motor vehicle for supplying direct-current energy from the converter means to the vehicle traction battery at a controlled rate; plug-in type alternating-current connector means located on the electric motor vehicle for enabling an alternating-current power outlet located off of the vehicle to be easily connected to the converter means, such connector means including a pair of high voltage alternating-current contact members and a pair of low voltage alternating-current contact members; switch means for selectively connecting one or the other but not both pairs of the alternating-current contact members to the converter means; and voltage responsive automatic control means for determining which of the two alternating-current voltagEs is present and controlling the switch means to supply same to the converter means.
Claim 2
Dependent Claim
174 words
A battery charging system located on board an electric motor vehicle for enabling the vehicle traction battery to be recharged from conveniently located alternating-current power outlets wherein the battery charging system comprises: converter means located on the electric motor vehicle for converting alternating-current power into direct-current power; charge control means located on the electric motor vehicle for supplying direct-current energy from the converter means to the vehicle traction battery at a controlled rate; plug-in type alternating-current connector means located on the electric motor vehicle for enabling an alternating-current power outlet located off of the vehicle to be easily connected to the converter means, such connector means including a pair of high voltage alternating-current contact members and a pair of low voltage alternating-current contact members; switch means for selectively connecting one or the other but not both pairs of the alternating-current contact members to the converter means; and voltage responsive automatic control means for determining which of the two alternating-current voltagEs is present and controlling the switch means to supply same to the converter means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-08 | 1979-03-10 | 1979-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-08 | 1983-03-10 | 1983-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-08 | 1987-03-10 | 1987-09-09 | $7700.00 | Window Closed / Lapsed |