US4415849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alternator protection system
Assignee: Prestolite Electric Inc
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Filing: 1982-03-25
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Granted: 1983-11-15
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Expires: 2002-03-25
Abstract
Abstract The protection system includes an over-temperature warning lamp in addition to the usual charge indicator lamp. Both lamps light at ignition as a test, then both go out. If the alternator should fail, both lamps again light. If the alternator overheats, only the warning lamp is lighted and current to the field coil is removed.
Inventors
- 👤 Kirk A. Sievers
- 👤 Dean C. Santis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:04
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/14; H02J7/16; H02J7/60; H02J7/65; H02J7/80
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
123 words
An alternator protection system comprising: first terminal means for supplying to a load a first rectified alternator output current at a predetermined voltage; second terminal means for supplying to a load a second rectified alternator output current at the predetermined voltage; first indicator means coupled to the second terminal means; thermal switching means coupled to the second terminal means; field coil means coupled to the thermal switching means; regulator means coupled to the thermal switching means and the field coil means for regulating the voltage in the field coil means; second switching means coupled between the first indicator means and the first terminal means; and second indicator means coupled across the series combination of the first indicator means and the thermal switching means.
Claim 2
Dependent Claim
123 words
An alternator protection system comprising: first terminal means for supplying to a load a first rectified alternator output current at a predetermined voltage; second terminal means for supplying to a load a second rectified alternator output current at the predetermined voltage; first indicator means coupled to the second terminal means; thermal switching means coupled to the second terminal means; field coil means coupled to the thermal switching means; regulator means coupled to the thermal switching means and the field coil means for regulating the voltage in the field coil means; second switching means coupled between the first indicator means and the first terminal means; and second indicator means coupled across the series combination of the first indicator means and the thermal switching means.
Claim 3
Dependent Claim
17 words
An alternator protection system according to claim 1 wherein the first and second indicator means are lamps.
Claim 4
Dependent Claim
18 words
An alternator protection system according to claim 1 and wherein the load is a battery of electrical cells.
Claim 5
Dependent Claim
24 words
An alternator protection system according to claim 1 and wherein the thermal switching means is positioned physically adjacent to a portion of said alternator.
Claim 6
Dependent Claim
16 words
An alternator protection system according to claim 4 wherein the thermal switching means includes a thermistor.
Claim 7
Dependent Claim
18 words
An alternator protection system according to claim 1 wherein the second switching means is a temporary contact switch.
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) | 1986-11-14 | 1987-05-16 | 1987-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-14 | 1991-05-16 | 1991-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-14 | 1995-05-16 | 1995-11-15 | $7700.00 | Window Closed / Lapsed |