Patent US5119010A successfully refreshed from Google Patents.
US5119010A
Expired / Lapsed
US
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Power supply device
Assignee: Isuzu Motors Ltd
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Filing: 1990-03-30
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Granted: 1992-06-02
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Expires: 2010-03-30
Abstract
Abstract A power supply device for use on a motor vehicle includes a charging power supply such as an alternator or a battery, a plurality of capacitors, chargeable by the charging power supply, for supplying stored electric energy to an electric load such as an engine starter, and a successive charging control circuit arrangement for successively charging the capacitors, one by one, with the charging power supply.
Inventors
- 👤 Akihiro Shirata
- 👤 Toshifumi Koshizawa
- 👤 Yuichi Koyama
- 👤 Yoshinobu Tsuchiya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:04
CPC Classifications
H; H02; H02J; H02J7/00; F; F02; F02N; F02N11/00; F02N11/08; F02N11/0862; F02N11/0866; B; B60; B60L; B60L50/00; B60L50/40; H02J1/00; H02J1/08; H02J7/14; H02J7/1423; H02J9/00; F02N11/087; F02N2011/0881; F02N2011/0885; H02J2105/00; H02J2105/30; H02J2105/33; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/70
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
112 words
A power supply device comprising: a charging power supply; a plurality of capacitors connected parallel to said charging power supply and being chargeable by said charging power supply, for supplying stored electric energy to an electric load; successive charging means for successively charging said capacitors with said charging power supply; and said successive charging means comprising detecting means for detecting the amount by which each of said capacitors is charged, and connection control means, responsive to detection of a fully charged condition of one of said capacitors, for connecting another uncharged one of said capacitors to said charging power supply and for keeping the charged capacitor connected to said charging power supply.
Claim 2
Dependent Claim
112 words
A power supply device comprising: a charging power supply; a plurality of capacitors connected parallel to said charging power supply and being chargeable by said charging power supply, for supplying stored electric energy to an electric load; successive charging means for successively charging said capacitors with said charging power supply; and said successive charging means comprising detecting means for detecting the amount by which each of said capacitors is charged, and connection control means, responsive to detection of a fully charged condition of one of said capacitors, for connecting another uncharged one of said capacitors to said charging power supply and for keeping the charged capacitor connected to said charging power supply.
Claim 3
Dependent Claim
16 words
A power supply device according to claim 1, wherein said charging power supply comprises an alternator.
Claim 4
Dependent Claim
16 words
A power supply device according to claim 1, wherein said charging power supply comprises a battery.
Claim 5
Dependent Claim
23 words
A power supply device according to claim 1, wherein said detecting means comprises means for detecting the voltage across each of said capacitors.
Claim 6
Dependent Claim
16 words
A power supply device according to claim 4, wherein said detecting means comprises a zener diode.
Claim 7
Dependent Claim
24 words
A power supply device according to claim 5, wherein said control means comprises a relay circuit having a coil connected to said zener diode.
Claim 8
Dependent Claim
18 words
A power supply device according to claim 1, wherein said capacitors are connected parallel to said electric load.
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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) | 1995-06-02 | 1995-12-02 | 1996-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-02 | 1999-12-02 | 2000-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-02 | 2003-12-02 | 2004-06-02 | $7700.00 | Window Closed / Lapsed |