US4240023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for indicating the rate of charge in an AC generator
Assignee: Toyota Motor Corp
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Filing: 1978-12-29
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Granted: 1980-12-16
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Expires: 1998-12-29
Abstract
Abstract A device for indicating the rate of charge in an AC generator with a contactless type voltage regulator having an exciting diode for supplying electric current to a field coil of the AC generator. The device includes a relay coil connected to an output end of the exciting diode, a relay contact responsive to an excitation of the relay coil and a charge warning means responsive to the relay contact thereby preventing malfunction of the charge warning means.
Inventors
- 👤 Takayoshi Masutani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:28
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/14; H02J7/80
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
141 words
A device for indicating the rate of charge in an AC generator for a vehicle comprising an exciting diode for feeding electric current to a field coil and a contactless regulator, and whose output end is connected to a battery mounted on the vehicle for charging, characterized in that: a relay coil is provided between output end of said exciting diode and one end of an electric power switch, the other end of which is connected to said battery; a reverse-current preventive diode is connected to said relay coil in series and in a manner that said field coil is on a cathode side of said preventive diode; a normally open contact closing through the excitation of said relay coil is provided; and the device for indicating the rate of charge is connected to said battery through said normally open contact.
Claim 2
Independent Claim
141 words
A device for indicating the rate of charge in an AC generator for a vehicle comprising an exciting diode for feeding electric current to a field coil and a contactless regulator, and whose output end is connected to a battery mounted on the vehicle for charging, characterized in that: a relay coil is provided between output end of said exciting diode and one end of an electric power switch, the other end of which is connected to said battery; a reverse-current preventive diode is connected to said relay coil in series and in a manner that said field coil is on a cathode side of said preventive diode; a normally open contact closing through the excitation of said relay coil is provided; and the device for indicating the rate of charge is connected to said battery through said normally open contact.
Claim 3
Dependent Claim
35 words
A device for indicating the rate of charge in an AC generator for a vehicle as set forth in claim 1, characterized in that said device for indicating the rate of charge is a lamp.
Claim 4
Dependent Claim
52 words
A device for indicating the rate of charge in an AC generator for a vehicle as set forth in claim 1, characterized in that an excitation circuit including a resistance and for feeding electric current to aid field coil when said generator is started is connected to said relay coil in parallel.
Claim 5
Dependent Claim
53 words
A device for indicating the rate of charge in an AC generator for a vehicle as set forth in claim 3, characterized in that a reverse-current preventive diode is connected to said resistance in series and in a manner that said field coil is on the side of cathode, in said excitation circuit.
Claim 6
Independent Claim
271 words
A device for indicating the rate of charge in an AC generator for a vehicle characterized by: (a) a three-phase wired stator coil; (b) a field coil rotatably disposed in opposed relation to said stator coil; (c) a rectifier connected to said stator coil for full-wave rectification thereof; (d) an exciting diode provided in parallel with said rectifier and whose output end is connected to one end of said field coil; (e) a regulator for detecting voltage generated in said stator coil and turning On and OFF the other end of said field coil so that said voltage can be set at a predetermined value; (f) a battery connected to said rectifier; (g) an ignition switch, one end of which is connected to said battery; (h) a relay coil connected to a portion between one end of said ignition coil and the junction coil and the junction of said exciting diode with said field coil; (i) a normally open contact closing through the excitation by said relay coil; (j) a charge warning lamp connected to said battery through said ignition switch and said normally open contact; (k) an initially exciting resistance connected to a portion between the junction of said exciting diode with said field coil and the junction of said ignition coil with said relay coil; (l) a reverse-current preventive diode connected to said initially exciting resistance in series and in a manner that said field coil is on the side of cathod; and (m) a reverse-current preventive diode connected to said relay coil in series and in a manner that said filed coil is on the side of cathode.
Claim 7
Independent Claim
271 words
A device for indicating the rate of charge in an AC generator for a vehicle characterized by: (a) a three-phase wired stator coil; (b) a field coil rotatably disposed in opposed relation to said stator coil; (c) a rectifier connected to said stator coil for full-wave rectification thereof; (d) an exciting diode provided in parallel with said rectifier and whose output end is connected to one end of said field coil; (e) a regulator for detecting voltage generated in said stator coil and turning On and OFF the other end of said field coil so that said voltage can be set at a predetermined value; (f) a battery connected to said rectifier; (g) an ignition switch, one end of which is connected to said battery; (h) a relay coil connected to a portion between one end of said ignition coil and the junction coil and the junction of said exciting diode with said field coil; (i) a normally open contact closing through the excitation by said relay coil; (j) a charge warning lamp connected to said battery through said ignition switch and said normally open contact; (k) an initially exciting resistance connected to a portion between the junction of said exciting diode with said field coil and the junction of said ignition coil with said relay coil; (l) a reverse-current preventive diode connected to said initially exciting resistance in series and in a manner that said field coil is on the side of cathod; and (m) a reverse-current preventive diode connected to said relay coil in series and in a manner that said filed coil is on the side of cathode.
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) | 1983-12-16 | 1984-06-16 | 1984-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-16 | 1988-06-16 | 1988-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-16 | 1992-06-16 | 1992-12-16 | $7700.00 | Window Closed / Lapsed |