US3836788A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine cranking motor circuit
Assignee: Motors Liquidation Co
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Filing: 1973-06-28
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Granted: 1974-09-17
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Expires: 1993-06-28
Abstract
Abstract An internal combustion engine cranking motor circuit in which a main and an auxiliary battery are connected in series with the cranking motor during the engine cranking operation. Upon the operation of the normally open electrical contacts of an electrical switch to the electrical circuit closed condition, the operating coils of separate electrical relays are energized. Upon the energization of the operating coil of the first relay, the main and auxiliary batteries are connected in series through the normally open contacts thereof and upon the energization of the operating coil of the second relay, the cranking motor is connected in series with the main and auxiliary batteries through the normally open contacts thereof.
Inventors
- 👤 R Carlson
- 👤 R Eddy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:24
CPC Classifications
H; H02; H02P; H02P7/00; H02P7/06; H02P7/18
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
188 words
An internal combustion engine cranking motor energizing circuit comprising in combination with a full-wave rectifier circuit of the type having three series connected diode pairs connected in parallel and positive and negative polarity output circuits, a cranking motor, a cranking motor solenoid having two operating coils and normally open electrical contacts and an electrical switch having normally open electrical contacts; a main and an auxiliary battery, each having positive and negative polarity output terminals; and diode; means for connecting said positive and negative polarity output circuits of said rectifier circuit to said positive and negative polarity output terminals of said main battery, respectively; means for connecting said positive polarity output circuit of said rectifier circuit to said positive polarity output terminal of said auxiliary battery through said diode; means for connecting said negative polarity output terminal of said auxiliary battery to the junction between the two diodes of any one of said series connected diode pairs of said rectifier circuit; and means responsive to the closure of said normally open contacts of said electrical switch for connecting said main and auxiliary batteries and said cranking motor in series.
Claim 2
Dependent Claim
188 words
An internal combustion engine cranking motor energizing circuit comprising in combination with a full-wave rectifier circuit of the type having three series connected diode pairs connected in parallel and positive and negative polarity output circuits, a cranking motor, a cranking motor solenoid having two operating coils and normally open electrical contacts and an electrical switch having normally open electrical contacts; a main and an auxiliary battery, each having positive and negative polarity output terminals; and diode; means for connecting said positive and negative polarity output circuits of said rectifier circuit to said positive and negative polarity output terminals of said main battery, respectively; means for connecting said positive polarity output circuit of said rectifier circuit to said positive polarity output terminal of said auxiliary battery through said diode; means for connecting said negative polarity output terminal of said auxiliary battery to the junction between the two diodes of any one of said series connected diode pairs of said rectifier circuit; and means responsive to the closure of said normally open contacts of said electrical switch for connecting said main and auxiliary batteries and said cranking motor in series.
Claim 3
Dependent Claim
227 words
An internal combustion engine cranking motor energizing circuit comprising in combination with a full-wave rectifier circuit of the type having three series connected diode pairs connected in parallel and positive and negative polarity output circuits, a cranking motor, a cranking motor solenoid having two operating coils and normally open electrical contacts and an electrical switch having normally open electrical contacts; a main and an auxiliary battery, each having positive and negative polarity output terminals; a diode; means for connecting said positive and negative polarity output circuits of said rectifier circuit to said positive and negative polarity output terminals of said main battery, respectively; means for connecting said positive polarity output circuit of said rectifier circuit to said positive polarity output terminal of said auxiliary battery through said diode; means for connecting said negative polarity output terminal of said auxiliary battery to the junction between the two diodes of any one of Said series connected diode pairs of said rectifier circuit; means responsive to the closure of said normally open electrical contacts of said electrical switch for connecting said main and auxiliary batteries in series and for completing an energizing circuit for said operating coils of said cranking motor solenoid; and means including said normally open electrical contacts of said cranking motor solenoid for connecting said cranking motor across the series combination of said main and auxiliary batteries.
Claim 4
Dependent Claim
227 words
An internal combustion engine cranking motor energizing circuit comprising in combination with a full-wave rectifier circuit of the type having three series connected diode pairs connected in parallel and positive and negative polarity output circuits, a cranking motor, a cranking motor solenoid having two operating coils and normally open electrical contacts and an electrical switch having normally open electrical contacts; a main and an auxiliary battery, each having positive and negative polarity output terminals; a diode; means for connecting said positive and negative polarity output circuits of said rectifier circuit to said positive and negative polarity output terminals of said main battery, respectively; means for connecting said positive polarity output circuit of said rectifier circuit to said positive polarity output terminal of said auxiliary battery through said diode; means for connecting said negative polarity output terminal of said auxiliary battery to the junction between the two diodes of any one of Said series connected diode pairs of said rectifier circuit; means responsive to the closure of said normally open electrical contacts of said electrical switch for connecting said main and auxiliary batteries in series and for completing an energizing circuit for said operating coils of said cranking motor solenoid; and means including said normally open electrical contacts of said cranking motor solenoid for connecting said cranking motor across the series combination of said main and auxiliary batteries.
Claim 5
Dependent Claim
323 words
An internal combustion engine cranking motor energizing circuit comprising in combination with a full-wave rectifier circuit of the type having three series connected diode pairs connected in parallel and positive and negative polarity output circuits, a cranking motor, a cranking motor solenoid having two operating coils and normally open electrical contacts and an electrical switch having normally open electrical contacts; a main and an auxiliary battery, each having positive and negative polarity output terminals; a diode; means for connecting said positive and negative polarity output circuits of said rectifier circuit to said positive and negative polarity output terminals of said main battery, respectively; means for connecting said positive polarity output circuit of said rectifier circuit to said positive polarity output terminal of said auxiliary battery through said diode; means for connecting said negative polarity output terminal of said auxiliary battery to the junction between the two diodes of any one of said series connected diode pairs of said rectifier circuit; first and second relays, each having an operating coil and normally open electrical contacts; means for connecting said positive polarity output terminal of said main battery to said negative polarity output terminal of said auxiliary battery through said normally open electrical contacts of said first relay for connecting said main and auxiliary batteries in series upon the energization of said operating coil of said first relay; means for connecting said operating coils of said first and second relays in parallel across said positive and negative polarity output terminals of said main battery through said normally open electrical contacts of said electrical switch; means for connecting said operating coils of said cranking motor solenoid in parallel across the series combination of said main and auxiliary batteries through said normally open electrical contacts of said second relay; and means for connecting said cranking motor across the series combination of said main and auxiliary batteries through said normally open electrical contacts of said cranking motor solenoid.
Claim 6
Dependent Claim
323 words
An internal combustion engine cranking motor energizing circuit comprising in combination with a full-wave rectifier circuit of the type having three series connected diode pairs connected in parallel and positive and negative polarity output circuits, a cranking motor, a cranking motor solenoid having two operating coils and normally open electrical contacts and an electrical switch having normally open electrical contacts; a main and an auxiliary battery, each having positive and negative polarity output terminals; a diode; means for connecting said positive and negative polarity output circuits of said rectifier circuit to said positive and negative polarity output terminals of said main battery, respectively; means for connecting said positive polarity output circuit of said rectifier circuit to said positive polarity output terminal of said auxiliary battery through said diode; means for connecting said negative polarity output terminal of said auxiliary battery to the junction between the two diodes of any one of said series connected diode pairs of said rectifier circuit; first and second relays, each having an operating coil and normally open electrical contacts; means for connecting said positive polarity output terminal of said main battery to said negative polarity output terminal of said auxiliary battery through said normally open electrical contacts of said first relay for connecting said main and auxiliary batteries in series upon the energization of said operating coil of said first relay; means for connecting said operating coils of said first and second relays in parallel across said positive and negative polarity output terminals of said main battery through said normally open electrical contacts of said electrical switch; means for connecting said operating coils of said cranking motor solenoid in parallel across the series combination of said main and auxiliary batteries through said normally open electrical contacts of said second relay; and means for connecting said cranking motor across the series combination of said main and auxiliary batteries through said normally open electrical contacts of said cranking motor solenoid.
Claim 7
Dependent Claim
354 words
An internal combustion engine cranking motor energizing circuit comprising in combination with a full-wave rectifier circuit of the type having three series connected diode pairs connected in parallel and positive and negative polarity output circuits, a cranking motor, a cranking motor solenoid having two operating coils and normally open electrical contacts and an electrical switch having normally open electrical contacts; a main and an auxiliary battery, each having positive and negative polarity output terminals; a diode; means for connecting said positive and negative polarity output circuits of said rectifier circuit to said positive and negative polarity output terminals of said main battery, respectively; means for connecting said positive polarity output circuit of said rectifier circuit to said positive polarity output terminal of said auxiliary battery through said diode; means for connecting said negative polarity output terminal of said auxiliary battery to the junction between the two diodes of any one of said series connected diode pairs of said rectifier circuit; first and second relays, each having an operating coil and normally open electrical contacts; means for connecting said positive polarity output terminal of said main battery to said negative polarity output terminal of said auxiliary battery througH said normally open electrical contacts of said first relay for connecting said main and auxiliary batteries in series upon the energization of said operating coil of said first relay; means for connecting said operating coils of said first and second relays in parallel across said positive and negative polarity output terminals of said main battery through said normally open electrical contacts of said electrical switch; means for connecting said operating coils of said cranking motor solenoid in parallel across the series combination of said main and auxiliary batteries through said normally open electrical contacts of said second relay; means for connecting said cranking motor across the series combination of said main and auxiliary batteries through said normally open electrical contacts of said cranking motor solenoid; and means for connecting said operating coil of said first relay across the series combination of said main and auxiliary batteries through said normally open electrical contacts of said cranking motor solenoid.
Claim 8
Dependent Claim
354 words
An internal combustion engine cranking motor energizing circuit comprising in combination with a full-wave rectifier circuit of the type having three series connected diode pairs connected in parallel and positive and negative polarity output circuits, a cranking motor, a cranking motor solenoid having two operating coils and normally open electrical contacts and an electrical switch having normally open electrical contacts; a main and an auxiliary battery, each having positive and negative polarity output terminals; a diode; means for connecting said positive and negative polarity output circuits of said rectifier circuit to said positive and negative polarity output terminals of said main battery, respectively; means for connecting said positive polarity output circuit of said rectifier circuit to said positive polarity output terminal of said auxiliary battery through said diode; means for connecting said negative polarity output terminal of said auxiliary battery to the junction between the two diodes of any one of said series connected diode pairs of said rectifier circuit; first and second relays, each having an operating coil and normally open electrical contacts; means for connecting said positive polarity output terminal of said main battery to said negative polarity output terminal of said auxiliary battery througH said normally open electrical contacts of said first relay for connecting said main and auxiliary batteries in series upon the energization of said operating coil of said first relay; means for connecting said operating coils of said first and second relays in parallel across said positive and negative polarity output terminals of said main battery through said normally open electrical contacts of said electrical switch; means for connecting said operating coils of said cranking motor solenoid in parallel across the series combination of said main and auxiliary batteries through said normally open electrical contacts of said second relay; means for connecting said cranking motor across the series combination of said main and auxiliary batteries through said normally open electrical contacts of said cranking motor solenoid; and means for connecting said operating coil of said first relay across the series combination of said main and auxiliary batteries through said normally open electrical contacts of said cranking motor solenoid.
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) | 1977-09-16 | 1978-03-18 | 1978-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-16 | 1982-03-18 | 1982-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-16 | 1986-03-18 | 1986-09-17 | $7700.00 | Window Closed / Lapsed |